KEB COMBIVERT F5-A,-E,-H 4.0. APPLICATION MANUAL (2008)

Protective Functions

7.13.9Motor Protection Mode

Functional description for F5A-M and F5H-M

The motor protective function protects the connected motor against thermal destruction caused by high cur-

rents. The function corresponds largely to mechanical motor protective components, additionally the influence

of the motor speed on the cooling of the motor is taken into consideration. The load of the motor is calculated

from the measured apparent current (ru.15) and the motor prot. rated current (dr.12).

For motors with separately driven fan or at rated frequency of a self-ventilated motor following tripping times

(VDE 0660, Part 104) apply:

1,2

• I_n

→ 2 hours

1,5

• I_n

→ 2 minutes

• I_n

→ 1 minute

• I_n

→ 5 seconds

Fig. 7.13.8.a Motor protection mode

Fr.8

Motor set

Parameter set selection

classification

dr.11

Electronic motor protection

ru.15

Apparent current

see Chapt. 6.8

Counter

Separate cooling

Counter

Self-cooling

Counter

dr.12

Motor protect. rated current

Counter

0.1…460.0 A

Pn.14

Motor protect. function response

Counter

0...6 (see Chapt. 6.7.6)

Counter

Motor protection mode (dr.11)

With this parameter, the cooling mode of the motor is set.

dr.11: Motor protection mode

Value

Function

Separate cooling (default)

Self-cooling

Motor protection rated current (dr.12)

This parameter specifies for each set the rated current (= 100% utilisation) for the motor protective function.

The motor protection-load is calculated as follows:

Inverter Apparent current

(ru.15)

Motor protection-load =

——————————————

Motor protection rated current

(dr.12)

Page7.13 - 25

Protective Functions

Warning OH2 stopping mode (Pn.14)

Pn.14 specifies the performance of the drive on activation of the motor protective function.

Fig. 7.13.8.b Tripping times for F5-B, F5-G and F5-M

Tripping

≥ Rated motor frequency

time

forced-ventilated motor

120 min

f = 0 Hz

60 min

30 min

Motor current

2 min

1 min

30 sec

120

5 sec

100

150

200

400

600

800

For self-ventilated motors the tripping times decrease with the frequency of the motor (see picture). The motor

protective function acts integrating, i.e. times with overload on the motor are added, times with underload are

subtracted. After triggering the motor protective function, the new tripping time is reduced to 1/4 of the specified

value, if the motor has not been operated for an appropriate time with underload.

Motor protection function for F5-M

In some applications, several motors are operated alternatively on one inverter. The changeover between the

motors takes place synchronously with the set changeover.

The motor protection function must then be able to distinguish which of the motors is currently being supplied.

For that purpose there is the parameter Fr.08 "motor set classification". Each motor is assigned a number from

0 to maximally 7, and this value is transferred to the parameter Fr.08 in all sets where the respective motor is

supplied.

Page7.13 - 26

Protective Functions

Example:

3 motors are operated alternately on the inverter.

assigned number

engaged if the active parameter set (ru.26) is equal to:

Motor 1

0, 1, 2, 3

Motor 2

4, 5

Motor 3

6, 7

The following programming must then be done:

Set 0

Fr.08 = 0

Set 4

Fr.08 = 1

Set 6

Fr.08 = 2

Set 1

Fr.08 = 0

Set 5

Fr.08 = 1

Set 7

Fr.08 = 2

Set 2

Fr.08 = 0

Set 3

Fr.08 = 0

The motor protection function is calculated separately for all motors, i.e., for each individual motor, a separate

overload counter is running.

If one of the counters reaches the limit of 100%, the behaviour programmed in Pn.14 "Warning OH2 stopping

mode" is triggered.

Motor protection function for F5-S

The motor protection function is activated if the ratio apparent current (ru.15) to continuous current (Is/Id)

exceeds the value of dr.50 "Motor protection min Is/Id". The release time for this point is set in dr.34 "Motor

protection time min Is/Id". In dr.35 "motor protection time Imax", the release time for maximum current is set. If

a greater value is programmed in dr.35 than in dr.34, the time dr.34 is valid in the whole range.

The maximum current is defined by dr.33 "DSM max. torque" or dr.15 "max. torque FI". The smaller of the two

values determines the maximum current.

The continuous current is speed-dependent. At speed 0, it is equal to dr.28 "DSM current for zero speed" and

at dr.24 "DSM rated speed", it reaches the value dr.23 "DSM rated current".

dr.28

DSM curr. f. zero speed

dr.23

DSM rated current

dr.24

DSM rated speed

Speed

The tripping time is the time, which the internal counter needs, in order to count from 0 to 100%. On reaching

100%, the error "30: ERROR! Motor protection function" (E.dOH) is triggered.

Page7.13 - 27

Protective Functions

Release time

dr.34

Motor prot. time

min Is / Id

dr.35

Motor prot. time

Motor current / Continuous

Imax

current

dr.50

dr.33

Is / Id

Motor prot.

Cont.current

min Is / Id

A warning level can be adjusted in Pn.15 "OH2 warning level". If the counter reaches this level, the adjusted

response in Pn.14 "Warning OH2 stop. mode" is executed.

The counter is reduced if the relation apparent current to continuous current is < dr.50. The recovery time dr.36

"motor protection recovery time" is the time the counter requires to count from 100% to 0% (after triggering of

the error, i.e., when no current is flowing). The error triggered by the motor protection function can already be

reset before the recovery time expires.

Page7.13 - 28

Protective Functions

7.13.10

Power-Off function

It is the task of the Power-Off function to ensure a controlled deceleration of the drive until standstill in case of

undervoltage (e.g. due to power failure). The kinetic energy of the rotating drive is used to support the inverter

DC-link voltage. As a result the inverter remains in operation and can decelerate the drive in a controlled man-

ner.

Especially in the case of parallel running drives (e.g.textile machines) the uncontrolled running down of the

motors and the consequences resulting from it (thread breakage) can be avoided.

For the various operating modes, the amount of available functions differs.

For the vector controlled modes, some parameters have no function or are even hidden.

Here is an overview:

Parameter

V/F-characteristic

Vector-controlled

operation

DASM

DSM

Pn.44 Power off mode

yes

bit 0, 1, 3..4

yes

bit 2, 8

yes

No function

bit 6..7

yes

only values 0 and

No function

192

Pn.45 Power off start voltage

yes

Pn.46 Power off auto st. level

yes

Pn.47 Power off brake torque

yes

No function

hidden

Pn.48 Power off restart level

yes

hidden

Pn.50 Power off ref. DC voltage

yes

No function

hidden

Pn.51 Power off KP DC voltage

yes

hidden

Pn.52 Power off restart delay

yes

Pn.53 Power off KP act. current

yes

No function

hidden

Pn.54 Power off KI act. current

yes

No function

hidden

Pn.55 Power off KD act. current

yes

No function

hidden

Pn.56 Power off jump factor

yes

No function

hidden

Pn.57 Power off KI DC voltage

yes

hidden

Page7.13 - 29

Protective Functions

Power-Off Mode (Pn.44)

The parameter Power-Off-Mode (Pn.44) switches on the function and determines the basic behaviour:

Pn.44: Power off mode

Bit

Meaning

Value

Explanation

0: off

Power-off function deactivated

Power off / activation

1: on

Power-off function activated

0: automatically

Auto determination of the start voltage

Release voltages

2: fixed level (Pn.46)

Preset the start voltage with Pn.46

Determination of the initial jump from the

0: from the slip

calculated slip

Initial jump (only v/f-.)

Determination of the initial jump from the

4: from the load

load factor

Status "78: power-off function active"

0: Mod. on, no restart

(POFF), modulation on, reset required

Status "78: Power-off function active"

(POFF), modulation on, restart on power

8: Mod. on, restart

Behaviour on reaching

recovery after Pn.52 "Power off restart

3..4

standstill

delay"

Status "84: no direction of rotation after

16: PLS, no restart

power off" (PLS), modulation off, reset

required

24: reserved

reserved

0 / 32: reserved

reserved

Bridging of mains gaps

Restart on power recovery, as long as

0: Starting voltage

the initial speed is not lower than Pn.48

"Power off restart value".

Emergency stop without braking modu-

64: Voltage setpoint Pn.50

(only v/f-char.)

Restart possible only on reaching stand-

Voltage setpoint selection

still.

6..7

(not for vector contr. DSM)

Bridging of mains gaps

128: Voltage setpoint

Restart on power recovery above Pn.48

Pn.50, if init.speed < Pn.48

"power off restart level".

(only v/f-char.)

Setpoint increase from initial voltage to

voltage setpoint below Pn.48.

Emergency stop with braking module

192: Braking torque (Pn.47)

Restart possible only on reaching stand-

still.

Voltage stabilization during power off =

0: on

Voltage stabilisation on

uF.09

power off (only v/f-char.)

Voltage stabilization during power off de-

256: off

activated

Tripping of Power-Off

The Power-Off function starts when the DC-link voltage drops below a certain value, the start voltage. The start

voltage can be set automatically or manually depending on Pn.44 Bit 1.

Page7.13 - 30

Protective Functions

Power off start voltage (Pn.45)

With manual adjustment the starting voltage can be preset with Pn.45 in the range of 200...1200 volt. For a

secure range the adjusted starting voltage must be at least 50V over the UP-threshold (UP: 200V class = 216V

DC; 400V class = 240V DC; 600V class = 360V DC)

Power off auto start level (Pn.46)

With Pn.46, the auto starting voltage is set in the range of 50...90% (Default: 80 %) of the rated DC link voltage

(ru.68).

The rated DC link voltage is measured on "Power on" and is displayed in ru.68.

Picture 7.13.10.a Starting the Power-Off function

ru.68 Rated DC voltage

DC-link voltage real value

Auto-DC-link voltage set value

Pn.44 Bit 1 starting voltage

measured at Power-On

Pn.46 Auto starting

voltage

0: auto determination of the start

voltage

50...90% (80%)

Start of power off if UZK-

Pn.45 starting voltage

actual value < start. volt.

2: preset the start voltage with

200...1200 V

Pn.45

Initial jump for generator operation (only v/f-characteristic operation)

First of all the drive must be brought into generatoric operation to enable the feed back

of energy into the intermediate circuit. This is achieved by making a frequency jump, so

that the speed of the drive is larger than the output rotating field speed of the inverter

Figure 7.13.10.b Initial jump for generator operation in 1. cycle

cS.01 act. source

Pn.56 Jump factor

0...800 %

Channel 1

0: Encoder channel 1

Channel 2

1: Encoder channel 2

Frequency jump

Pn.44 bit 2

Starting jump

2: calculated actual

value

Slip calculation by the active

current

0: Active current IW

Motor data

Slip calculation

4: Utilisation IS

Utilisation

Initial jump calculation (Pn.44 Bit 2)

The parameter Pn.44 bit 2 determines, whether the starting jump is calculated from the active current or from

the utilisation. This setting has no effect on slip regulation. Default value is the calculation of the active current,

but in the case of high harmonic content of the output current it can lead to false values. In that case the starting

jump must be determined from the utilisation. To get proper values enter motor data into dr-parameters first.

Page7.13 - 31

Protective Functions

Power off jump factor (Pn.56)

By means of the jump factor the automatically determined starting jump can be adapted to the respective ap-

plication.

In case the jump factor is too small, the inverter trips to "2 ERROR! Undervoltage" (E.UP)!

For too great a jump factor, the inverter runs into the hardware current limitation (status value 80 "HCL"). The

control cannot work correctly, thus causing a wrong calculation of the active current!

Power off controller (not for vector controlled operation with DSM)

There are two controllers: the DC-link voltage controller and the active current controller.

The active current controller is downstream of the DC link voltage controller in v/f-characteristic operation.

In vector controlled operation, the output of the DC link voltage controller is used as the torque limit.

If the braking torque is selected as the setpoint (Pn.44 bit 6...7 = 3), the DC link voltage controller is deactiva-

ted.

setpoint = start voltage (Pn.44 Bit 6...7 = 0)

The initial voltage value selected with Pn.44 bit 1 is the setpoint of the DC link voltage controller (see also:

tripping of Power-Off

This setting serves to bridge voltage drops. On power recovery, the drive restarts if the initial speed has not yet

fallen below the "power off restart value" (Pn.48).

Setpoint = braking torque (Pn.47; Pn.44 bit 6...7 = 3) (only V/F characteristic operation)

The braking torque can be preset within the range of 0,0...100,0 %.

The braking torque is used as setpoint value source, if the drive must be stopped as quickly as possible in case

of power failure. The DC link voltage controller is switched off in this case. Since the DC link voltage increases

very strongly in this mode, a braking module is required.

Since the hardware current limit should not be reached with active current control, the setpoint value is limited

internally which can lead to oscillations. In that case the setpoint value can be reduced, which leads to prolon-

gation of the delay. If the voltage stabilization is switched on (Pn.44 bit 8 = "1") and uf.09 = rated voltage is

adjusted, the voltage is not so high and the deceleration becomes more uniform.

Setpoint = voltage setpoint (Pn.50; Pn.44 bit 6...7 = 1 or 2) (only V/F characteristic operation)

The setpoint DC-link voltage can be preset in the range of 200...1200 V. To ensure a safe operation the internal

value is limited down. The value of the DC-link voltage in normal operation plus approx. 50V adjusts itself as

minimum value. If a braking resistor is connected, the adjusted value may not lie above the threshold of the

braking resistor, else the controller cannot work (threshold 200V-class: 380V; 400V-class: 740V; 600V-class:

1140V).

If Pn.44 Bit 6...7 = 1, the voltage setpoint is used as setpoint immediately after the triggering of power off. In this

mode, a restart is possible only after reaching standstill.

In mode Pn.44 Bit 6...7 = 2, initial voltage is adjusted to first after triggering. On undershooting the restart value

(Pn.48), the setpoint is increased to the voltage setpoint (Pn.50) with a ramp. This achieves that the drive still

has enough energy for braking when reaching standstill in critical applications.

Page7.13 - 32

Protective Functions

KP DC link voltage controller (Pn.51), KI DC link voltage controller (Pn.57)

To be able to adapt the drive individually to the application, the proportionality factor of the DC link-voltage con-

troller can be adjusted with Pn.51 and the integer factor with Pn.57 (not for F5-B/C), in the range of 0...32767.

In most cases the default setting will achieve sufficient results. If, however, overshoots or fall backs of the motor

occur, the values must be lowered.

KP (Pn.53), KI (Pn.54), KD (Pn.55) (only V/F characteristic operation)

Pn.53, Pn.54 and Pn.55 are the controller parameters of the active current controller

A D-part usually has a positive effect on control. Pn.55 should have approx. 10-times the value of Pn.53.

Behaviour on power recovery and below the restart value (Pn.48)

The following parameters effect the behaviour of the inverter if the system voltage returns during the Power-

Off-function.

Restart value (Pn.48)

Depending on the individual case, it can be reasonable to execute the restart on power recovery only above a

defined base value. This restart value is adjusted in Pn.48.

Dependent on the setpoint value source (Pn.44 bit 6 ..7) following conditions occur:

1. Control to the starting voltage (Pn.44 Bit 6...7 = 0):

If the output value is larger than the restart value, the restart is carried out upon power recovery. The output

value is kept constant during the restart delay

(Pn.52). Afterwards it is accelerated to the current setpoint va-

lue. Below the restart value it is delayed in case of power recovery with the fast-stop-function ( DEC-ramp at

F5-B/C). If the power does not recover, the controller parameters of the active current controller are decreased

linearly with the base value in v/f-characteristic operation.

2. Control to voltage setpoint Pn.50 for a base value smaller than the restart value (Pn.44 bit 6...7 = 2):

As long as the base value is greater than the restart value, the inverter behaves as in item 1. Below the restart

value the voltage setpoint value of Pn.50 is increased and with active current control (without speed detection)

the control parameters of the active current control are reduced linearly with the output value. On power reco-

very, a restart is then only possible after reaching standstill.

3. Control to voltage setpoint Pn.50 or braking torque Pn.47 (Pn.44 bit 6.,.7 = 1 or 3):

The control parameters of the active current control (without speed detection) are reduced below the restart

value linearly with the output value.

On power recovery, a restart is possible only after reaching standstill.

Behaviour on reaching standstill (Pn.44 Bit 3.,.4)

Pn.44 bit 3..4 determines how the drive behaves on reaching standstill.

Pn.44 bit 3...4 = 0:

The inverter modulates independent of a set direction or rotation with the adjusted boost and is in status "78:

power off function active" (POFF). Attention: Motor warming! A reset is necessary for the restart.

Pn.44 bit 3...4 = 1:

The inverter modulates independent of a set direction or rotation with the adjusted boost and is in status "78:po-

wer off function active" (POFF). After expiration of the restart delay Pn.52 (if adjusted) the inverter restarts

automatically.

Pn.44 bit 3...4 = 2:

The inverter switches off the modulation and is in status "84: no direction of rotation after power off" (PLS). A

reset is necessary for the restart.

Page7.13 - 33

Protective Functions

Restart delay (Pn.52)

If a restart is allowed the restart delay time is kept constant after power recovery of the output value. It is ad-

justable within the range of 0...100 s (Default 0 s). After expiration of this time it is accelerated again onto the

current setpoint.

Examples of the power off-operating modes

To better illustrate the context, the operating modes are explained in more detail in the following section.

Bridging of mains gaps (not for vector controlled operation with DSM)

Setpoint source:

Starting voltage (Pn.44 bit 6..7 = 0)

Voltage setpoint Pn.50, if base value < Pn.48 (Pn.44 Bit 6..7 = 2)

In this mode the motor shall be operated almost in no-load operation and only recover the energy which the

inverter requires for the operation. The starting voltage is at the same time the setpoint value for the DC-link

voltage control. In V/F characteristic operation, the set value is the setpoint of the active current controller, and

in vector controlled operation, the torque limit of the speed controller.

In case of weak supply systems it is recommended to choose the automatic starting voltage, as in this case the

starting voltage value is adapted to slow voltage fluctuations.

In the first cycle, a speed jump is issued in V/F characteristic operation, and in vector controlled operation, the

limit of the speed controller is set to the measured slip so that the drive is put in no-load operation.

To safely decelerate the drive in v/f-characteristic operation, the controller parameters of the active current

controller are lowered to below of the restart value, linearly with the base value.

Restart at power recovery

Only in this mode the system recovery can be constantly detected. An immediate restart upon power recovery

is possible.

After detecting the power recovery the restart delay (Pn.52) runs down and the drive accelerates to the current

setpoint value.

An immediate restart is not executed below the restart value (Pn.48). The drive decelerates with the quick stop

function (Pn.60..61) and behaves according to the adjustment in Pn.44 bit 3...4.

To have more energy available for braking the inertial mass on reaching standstill in v/f-characteristic operation,

the voltage setpoint for undershooting the restart value (Pn.48) can be increased to the voltage setpoint (Pn.50)

(Pn.44 Bit 6...7 = 2).

In this case the control remains active with the increased setpoint value. A restart is then possible only after

reaching standstill. Thereafter, the behaviour is define by Pn.44 Bit 3...4.

In this mode, too, the lowering of the controller parameter is executed.

Emergency stop with braking module (not for vector controlled with DSM)

Setpoint source:

Brake torque (Pn.44 bit 6...7 = 3)

In this mode the drive is to be stopped as fast as possible. Since the recovered energy can be very high, a

braking resistor is necessary.

The DC-link voltage controller is not active. In v/f-characteristic operation, the setpoint of the active current

controller is the braking torque (Pn.47). In vector controlled operation, the drive decelerates with the abnor-

mal stopping-function (Pn.60, 61, 67; see chapter 7.13.5) and behaves dependent on the setting in Pn.44 Bit

3...4.

In v/f-characteristic operation, the drive supplies no energy anymore at low speed. In this case, the control must

be very soft, to prevent fall back.

It is possible to adjust the restart (Pn.48). The controller parameters of the active current controller are lowered

to below this value, linearly with the base value.

Page7.13 - 34

Protective Functions

Emergency stop without braking module (only V/F characteristic operation)

Setpoint source:

voltage setpoint Pn.50 (Pn.44 Bit 6...7 = 1)

In some cases one can do without a braking module with the Emergency-stop function, if the losses in the motor

are very high at high DC-link voltage.

The voltage stabilization should be switched off in this case. This can be done with Pn.44 Bit 8 = 1 during

Power-Off.

The DC-link voltage control is active. Deceleration is always to standstill. Accordingly the performance results

from the adjustment of Pn.44 bit 3...4.

At small speeds the drive supplies no more energy. In this case, the control must be very soft, to prevent fall

back.

It is possible to adjust the restart (Pn.48). The controller parameters of the active current controller are lowered

to below this value, linearly with the base value.

Power off in vector controlled operation with DSM

In this operating mode, only the emergency stop-function with braking module can be activated. After triggering

of power off, the drive decelerates with the abnormal stopping-function (Pn.60, 61; see chapter 7.13.5) and

behaves dependent on the setting in Pn.44 Bit 3...4.

7.13.11

GTR7-Control

The braking transistor (GTR7) serves to control a braking resistor.

In the factory setting, the GTR7 is operated dependent on the DC link voltage to discharge recovered energy.

Here, the GTR7 is active only if the converter (the modulation), too, is enabled.

With the parameters Pn.64 "Set GTR7 input selection", Pn.65 "special functions" and Pn.69 "GTR7 voltage",

the switching performance of the GTR7 can be modified.

7.13.11.1

Activation via digital input

With Pn.64 an input can be defined for the activation of the GTR7. Thereby, the activation of the braking transi-

stors of all inverters in a DC interconnection of several drives can be synchronised and the generated braking

energy thereby be distributed over all inverters.

The GTR7 controls the braking resistor, in this case, independent of the inverter state and the DC link voltage,

as soon as the input is active.

Exception: On opening the control release (noP), the GTR7 is always switched off for safety reasons.

I.e., as soon as a digital input is selected for activation of the braking transistor, the adjustments in Pn.65 con-

cerning the GTR7 and the parameter Pn.69 are without function.

7.13.11.2

Adjustment of the activation threshold

With Pn.69 "GTR7 voltage", the DC link voltage level at which the braking transistor becomes active can be

adjusted.

The settings range is 300..1500V. This value is limited downwards internal to the inverter: the braking transistor

becomes active no earlier than ru.68 "rated DC voltage" * 1.0625.

The DC link voltage rated value is the DC link voltage measured at "Power on".

Page7.13 - 35

Protective Functions

7.13.11.3

Activation conditions

In the factory settings, the braking transistor is only active if the modulation is also enabled.

The reason for it is that for "standard" asynchronous motors, the recovery of energy into the inverter also ends

with shutdown of the modulation.

When using synchronous machines in the field weakening range, or using sine filters at the inverter output,

recovery may continue despite the modulation being switched off.

In that case, Pn.65 should be changed.

Pn.65 Special functions

Bit

Meaning

Explanation

1: GTR7 function

GTR7 function also available in status "70: standstill (Modulation off)" (LS)

for LS

GTR7 function also available if the inverter is in an error state.

8: GTR7 release on

Exception: On opening of the hardware control release (terminal X2A.16) and

error

for an unpowered power circuit (status 13: power circuit not ready), the GTR7 is

always switched off.

The terminal ST causes an immediate hardware switch-off of the braking tran-

sistor. If the GTR7 function is to be available in status "0: no controller release"

(nop) as well, the software controller release must be used (can be activated via

32: GTR7 function

di.36). The GTR7 can then be activated for the status "no control release" with

for SW nop

bit 5.

Exception: On opening the hardware control release (terminal X2A.16), the

GTR7 is always switched off.

In which cases the braking transistor remains active even if modulation is switched off depends of the specific

application.

7.13.12

Special functions

In these parameters, many different functions for adapting the inverter behaviour to special applications are

pooled.

Pn.65 Special functions

Bit

Meaning

Explanation

1: GTR7 function for

GTR7 function also available in status "70: standstill (Modulation off)" (LS) *1

With the input selected in Pn.04 "Ext. fault input selection", "Error! undervoltage"

is triggered rather than "Error! external input".This can achieve that, for coupled

drives, all inverters simultaneously go to undervoltage as soon as there is a

2: Pn.04 = E.UP

brownout on one of the inverters, and all inverters also execute an automatic

restart simultaneously when the mains voltage returns to the valid range on all

inverters. The undervoltage error from the DC link voltage measurement re-

mains active.

further on next side

Page7.13 - 36

Protective Functions

Pn.65 Special functions

Bit

Meaning

Explanation

The status "13: Power circuit not ready" (nO_PU), which the inverter enters for

4: Behaviour if LT

an unpowered power circuit, is not treated as an error. I.e., the switching condi-

not ready

tions 4..6 are not met and the bit 1 in status word "Error" is not set.

GTR7 function also available if the inverter is in an error state. Exception:On

8: GTR7 release on

opening of the hardware control release (terminal X2A.16) and for an unpow-

error

ered power circuit (status 13: power circuit not ready), the GTR7 is always swit-

ched off. *1

16: OL2 tempera-

On activation of this bit, the current limit for the overload protection in the lower

ture-dependent

speed range (OL2-function) is dependent on the heat sink temperature

The terminal ST causes an immediate hardware switch-off of the GTR7. If the

GTR7 function should also be available in status "0: no control release" (nop),

32: GTR7 function

the software control release must be used (activation via di.36). The GTR7 can

for SW nop

then be activated for the status "no control release" with bit 5. Exception: On

opening the hardware control release (terminal X2A.16), the GTR7 is always

switched off.

For switching frequencies above the rated switching frequency, the current limit

64: OL2 Derating li-

for the overload protection in the lower speed range is reduced. On activation

miting

of this bit, the inverter reduces the switching frequency to the rated switching

frequency to prevent the error "Overload in standstill" (E.OL2).

The status "2: ERROR! undervoltage" (E.UP) is not treated as an error if the

128: E.UP = no error

rotation setting or the control release is missing. I.e., the switching conditions

on nop+LS

4..6 are not met and the bit 1 in status word "Error" is not set.

The status "76: motor de-excitation" (bbL) is not displayed anymore. Advantage:

the cause of the switch-off of the modulation (e.g., error) is visible immediately

256: BBL is not dis-

in ru.00 and can be evaluated by an external control. Disadvantage: Since a

played

reset of an error is only possible after expiration of the base-block time, it is not

apparent without display when a reset can be executed.

The bit 2 in SY.51 "status word (low) normally shows "Start" if the modulation is

switched on. Exception: If a positioning is aborted via the bit 11 "Termination" in

512: Status termina-

the control word, then the status word displays "Stop" as soon as the drive re-

tion = RUN

aches speed 0 (even if modulation is still active). This exception can be revoked

by activation of bit 9.

If this bit is active, the ERROR-bit in status word SY.51 and the switching con-

1024: A.XX = error

dition that responds to an error are set in case of a malfunction (Status warning

/ A.XX).

2048: no dig. ST =

the two watchdogs (for operator interface and HSP5) are deactivated by the

no E.Bus

input programmed in di.39 "Shutdown ST input selection". *2

A malfunction or error reset is permitted only when the amount of the actual

4096: Error reset at

value (ru.07) is smaller than the operating hysteresis(LE.16). This applies also

to the automatic restart.

The comparison ru.07 "Actual value display" = ru.01 "Set value display“ (for

status word and condition "constant run“) is continuously executed, even for

8192: Actual value =

switched off modulation and during the "speed search“.

setpoint at mod. off

This affects the status word, the timer start and reset conditions, and the swit-

ching condition 20.

Page7.13 - 37

Protective Functions

*1 to bit 0, 3, 5: With the GTR7 (braking transistor), a braking resistor can be connected to the DC link that

absorbs recovered energy when the motor is working as a generator.

By default, the GTR7 is off when the modulation is switched off.

For some applications (e.g., synchronous motor operated in the field weakening range) it is

sensible to leave the GTR7 active for switched off modulation, so that the braking resistor

can be added when the DC link voltage exceeds the value of Pn.69 "GTR7 voltage".

By setting this bit, the GTR7 function is available for the respective inverter state.

*2 to bit 11:

If a drive is controlled via a bus system, and the control release is furthermore switched

via the control word, the two watchdogs (Operator watchdog and HSP5 watchdog) should

be activated so that the drive is stopped on failure of the bus system. However, the drive

can then not be repositioned by hand anymore, since - as long as the bus is down - the

malfunction- or error message of the watchdog remains in force.

With parameter di.39 "Disable dig. ST input selection", an input can already be selected

with which the digital setting of the control release (i.e., setting via di - parameter or the

control word) can be deactivated. With that, only the terminal ST (X2A.16) is operative, and

the regulation of the control release can again occur via the digital input alone.

If this bit is set, the two watchdogs are also deactivated with the selected (in di.39) input. If

a response with automatic restart is now selected for the watchdog error, the malfunction

automatically resets and the drive can be used in manual operation.

Page7.13 - 38

Parameter Sets

7.1

Operating and appliance date

Introduction

7.2

Analog in- and outputs I

Summary

7.3

Digital in- and outputs

Hardware

7.4

Setpoint-, rotation- and ramp adjustment

Motor data and controller adjustments of the asynchronous

7.5

Operation

motor

Motor data and controller adjustments of the synchronous

7.6

motor

Selection of Operating

Mode

7.7

Speed control

Initial Start-up

7.8

Torque display and -limiting

7.9

Torque control

Functions

7.10

Current control, -limiting and switching frequencies

Error Assistance

7.11

Speed measurement

Project Design

7.12

Positioning and synchronous control

7.13

Protective functions

10. Networks

7.14

Parameter sets

11. Parameter Overview

7.15

Special functions

12. Annex

7.16

CP-Parameter definition

Page7.14 - 1

Parameter Sets

7.14 Parameter sets

The KEB COMBIVERT contains 8 parameter sets (0...7), i.e. all programmable parameters are available 8

times in the inverter and independent of each other they can be assigned with different values. As a lot of

parameters in the parameter sets contain the same value, it would be relatively complicated to change every

parameter in each set individually. In this section it is described, how one copies whole parameter sets, locks

them, selects them and reinitializes the inverter.

7.14.1Non-programmable parameters

Certain parameters are not set-programmable, as their value must be the same in all sets (e.g. bus address or

baud rate). For an easy identification of these parameters the parameter set number is missing in the parameter

identification.

For all non-programmable parameters the same value is valid independent of the selected parameter

set!

Following parameters are non-programmable:

Sy Parameters

Pn.00...18/ 23/ 27/ 29/ 42/ 44...60/ 62...66/ 68/ 69/ 74…81

ru parameters

uF.08/ 12...15/ 18 (uF.09 at F5-S) / 18…23

Ec parameters

ud.01...17/ ud.22…31 (all at F5-S)

AA parameters

Fr.02...04/ 07/ 09/ 11 (Fr.10 at F5-S)

di parameters

An.00...04/ 10...14/ 20...24/ 41...56

In parameters (exception: In.25)

LE.16-27

dr parameters (not at F5-S)

cn.03/ 11...13

oP.19/ 20/ 50/ 53...58/ 60…63/ 65…68/ 74

dS.00...01 (only F5-S)

PS.02...04/ 10...27/ 29...31

7.14.2Security parameters

The security parameters contain the Baud rate, inverter address, hours/meter, control type, serial-/customer

number, trimming values and error diagnosis. They are not overwritten while copying parameter sets from the

default set.

Sy.02/ 03/ 06/ 07/ 11

ru.40/ 41

ud.01/ 02

Fr.01

In.10...16/ 24...31

7.14.3System Parameters

The system parameters contain the motor and encoder data.

dr parameters

Pn.61/ 67

cS.00...19...22

dS.00...01/ 13

Ec.01...07/ 11-27/ 36...38

Fr.10

Page7.14 - 3

Parameter Sets

7.14.4Indirect and direct set-addressing

During indirect set addressing the parameter values are indicated and edited to the adjustment of the set indi-

cator (Fr.09). The direct set addressing enables the display or writing of a parameter value independent of the

set indicator directly into one or several parameter sets. The direct set programming is only possible with bus

operation.

7.14.5Copying of parameter sets via keyboard (Fr.01)

Adjust target set

Adjust source set

A_✳ Fr_· 1

ini_A

0. Fr. 1

ini_S

▲

1. Fr. 1

dEF_A

▲

DOWN

2. Fr. 1

dEF_S

3. Fr. 1

〉^{with Func. to the source}

〉

with Funct.

4. Fr. 1

5. Fr. 1

▼

6. Fr. 1

7. Fr. 1

With the keys UP/Down and at flashing

The source set is adjusted with the keys

point the target set 0...7 is adjusted in

UP/Down. The copying process is star-

addition to the parameter set number.

ted with „Enter“. Copying is only possi-

The active (A) parameter set must not

ble with opened control release or error,

be adjusted as target set while copying.

otherwise „I_oPE“ appears in the display

If the target set is > 0, only the program-

(invalid operation).

mable parameters are overwritten!

After copying „PASS“ appears in the dis-

play and could be erase by „ENTER“.

Page7.14 - 4

Parameter Sets

7.14.6Copying of parameter sets via bus (Fr.01, Fr.09)

In case of indirect set addressing at Bus operation two parameters are responsible for the copying of parame-

ter sets. Fr.09 defines the target set. Fr.01 defines the source parameter set and starts the copying process.

In the case of direct set programming the source set (Fr. 01) is copied into the selected parameter sets. The

following copying actions can be practised:

Target

Source set

Action

set

Fr.01

Fr.09

0...7

All programmable parameters (System parameters too) of the source set

are copied into the target set.

-1: dEF_S

Default values are copied into all parameters of set 0 (with exception of

System and Security parameters).

1...7

-1: dEF_S

Default values are copied into all programmable parameters of the target

set (with the exception of System and Security parameters).

All

-2: dEF_A

Default values are copied into all parameters of all sets (with the exception

of System and Security parameters).

-3: ini_S

Default values are copied into all parameters of set 0 (with the exception of

Security parameters).

1...7

-3: ini_S

Default values are copied into all programmable parameters of the target

set (with the exception of Security parameters).

All

-4: ini_A

Default values are copied into all parameters of all sets (with the exception

of Security parameters).

By loading the factory setting all definitions defined by the mechanical engineer are reset! This can comprise

the terminal assignment, set changeover or operating states. Before loading the default set it is to be ensured

that no unintended operating states occur.

Custom-specific default values

Value

Source default values

Copied parameters

Target sets

Fr.01

-1

KEB

Customer parameters

selected

-2

KEB

Customer parameters

all

-3

KEB

Customer and system parameters

selected

-4

KEB

Customer and system parameters

all

-5

custom-specific

Customer parameters

selected

-6

custom-specific

Customer parameters

all

-7

custom-specific

Customer and system parameters

selected

-8

custom-specific

Customer and system parameters

all

-9

Storing of the current parame-

Customer and system parameters

all

ter setting as custom-specific

default values.

The values -5 to -8 are corresponding to the previous values -1 to -4 referring to the copied parameters and

target sets. They differ only in the default value source.

Value -9 enables storing of the current parameter setting as custom-specific default values. The values of all

customer and system parameters are stored in all sets thereby.

Page7.14 - 5

KEB COMBIVERT F5-A,-E,-H 4.0. APPLICATION MANUAL (2008) - page 20