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EMERSON PACSystems VersaMax MICRO PLC & NANO PLC. USER MANUAL (2019) - page 42

User Manual

Appendix C

GFK-1645M

Dec 2019

Battery Backup Options

626

Appendix C:

Battery Backup Options

Backup battery options are available for 20-, 23-, 28-, 40-, and 64-point VersaMax Micro
PLCs. A backup battery protects the RAM memory contents of the PLC when the PLC power

is removed or turned off. The battery also backs up the CPU’s real

-time clock.

C-1

CPU Battery Consumption

The battery consumption of the Micro PLC depends on whether the power is on or off and
on the serial number of the Micro PLC. Consumption with the power off is greater at higher
temperatures.

Controller Status

Battery Consumption per Hour

Power ON

PLCs with serial number prior to 07000069274: 30 µA

PLCs with serial number after 07000069274: 3 µA

Power OFF

PLCs with serial number prior to 07000069274:

83 µA @ 70°C

36 µA @ 20°C

PLCs with serial number after 07000069274:

56 µA @ 70°C

9 µA @ 20°C

20-, 40-, and 64-Pt Micro PLCs:

31 µA @ 55°C

3 µA @ 25°C

C-2

Backup Batteries for VersaMax Micro PLCs

Two types of backup battery are available, IC200ACC403 and IC200ACC414.

Part
Number

Battery
Type

Battery
Capacity

Memory Backup at
70C (power OFF
continuous)

Memory Backup at
20C (power OFF
continuous)

IC200ACC403

Coin Type

3.0 Vdc @
210mAh

3.5 months

5.2 months

8.1 months

32.4 months

IC200ACC414

Cylinder
Type

3.6 Vdc @
790mAh

13.2 months

19.6 months

30.4 months

121.9 months

The High Capacity battery (IC200ACC414) is provided with a special battery holder that is
compatible with all 20-, 23-, 28-, 40- and 64-point VersaMax Micro PLCs.

Units with serial number prior to 07000069274 (manufactured before November 2002)

Units with serial number after 07000069274 (manufactured after November 2002)

User Manual

Appendix C

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Dec 2019

Battery Backup Options

627

C-3

Calculating the Life of a Battery

This example compares typical battery longevity for the two types of Micro PLC backup
battery, for VersaMax Micro PLCs with a serial number after 07000069274.

In this example, a machine sits at the OEM facility for 30 days with the battery attached to
the Micro PLC CPU, prior to shipment to the end user. No power is applied.

•

CPU battery consumption during 30 days with no power: 40,320 µA:

24 hours x 56 µA per hour = 1,344 x 30 days = 40,320 µA (worst case of 70°C storage
temperature)

After the machine is shipped and installed, the end user maintains power on the machine
24 hours a day but shuts down the machine during the weekends.

•

Power ON: 24 hours x 3 µA = 72 µA/day

•

Power ON: 5 days x 72 µA = 360 µA/5 days

•

Power OFF: 48 hours x 32.5 µA (45°C cabinet temperature) = 1560 µA/weekend

•

Total weekly usage: 1,920 µA

C-3.1

For Standard Backup Battery IC200ACC403

Standard Backup Battery has 210,000 µA available. In this example, subtracting the CPU
battery consumption during the 30 days at the OEM facility (40,320, see above), would
leave 169,680 µA still available. Therefore, the battery would last approximately 1.7 years
(88 weeks) at the end-user location before needing replacement:

169,680 divided by 1,920 total weekly usage (see above) = 88 weeks

C-3.2

For High Capacity Battery IC200ACC414

High-capacity Backup Battery has 790,000 µA available. In the example, subtracting the CPU
battery consumption at the OEM facility (40,320) would leave 749,680 µA still available.
Therefore, the battery would last approximately 7.5 years (390 weeks) at the end user
location before needing replacement:

749,680 divided by 1,920 weekly usage (see above) = 390 weeks.

User Manual

Appendix D

GFK-1645M

Dec 2019

Input Simulators

628

Appendix D:

Input Simulators

This section describes input simulators that can be used to easily turn on or off any DC input
point on a VersaMax Nano PLC or VersaMax Micro PLC.

•

IC200ACC450 Input Simulator for DC-powered VersaMax Nano PLCs

•

IC200ACC451 Input Simulator for DC-powered VersaMax Micro PLCs and
Expansion Units

D-1

IC200ACC450
Input Simulator for DC-powered VersaMax
Nano PLCs

The six-position DC input simulator connects directly to the input terminals on a VersaMax
Nano PLC. An external connection for the 12Vdc or 24Vdc is required.

Figure 394

D-1.1

Compatibility

Input Simulator IC200ACC450 is compatible with any DC input VersaMax Nano PLC. The
input simulator is not to be used with AC Inputs.

User Manual

Appendix D

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Dec 2019

Input Simulators

629

D-1.2

Installation Instructions

WARNING

To avoid a risk of electric shock, turn off power to the VersaMax Nano PLC and disconnect
the main power before attaching the Input Simulator.

Loosen all screws on the input terminal block.

Insert the Input Simulator as shown above.

Tighten all screws on the input terminal block.

Turn power on and turn switches on the simulator ON and OFF. The corresponding
LEDs on the VersaMax Nano PLC should light up, showing proper installation. If the
LEDs do not light, power down and recheck the screws to make sure they are tight.

D-2

IC200ACC451
Input Simulator for DC-powered VersaMax
Micro PLCs and Expansion Units

The eight position DC input simulator connects directly to the input terminals of a  VersaMax
Micro PLC or Expansion Unit.  The connection takes advantage of the 24Vdc provided by the
Micro PLC or Expansion Unit; no external wiring is required.

Figure 395

D-2.1

Compatibility

Input Simulator IC200ACC451 is compatible with any VersaMax DC input:

•

14-point, 23-point, or 28-point Micro PLC

•

14-point or 28-point Expansion Unit

The input simulator is not to be used with AC Inputs.

User Manual

Appendix D

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Dec 2019

Input Simulators

630

D-2.2

Installation Instructions

WARNING

To avoid a risk of electric shock, turn off power to the VersaMax Micro PLC or Expansion Unit,
and disconnect the main power before attaching the Input Simulator.

Loosen all screws on the input terminal block.

Insert the Input Simulator as shown above.

Tighten all screws on the input terminal block.

Turn power on and turn switches on the simulator ON and OFF. The corresponding
LEDs on the Micro PLC or Expansion Unit should light up, showing proper installation.
If the LEDs do not light, power down and recheck the screws to make sure they are
tight.

User Manual

Appendix E

GFK-1645M

Dec 2019

Relay Contact Ratings

631

Appendix E:

Relay Contact Ratings

This section shows relay contact ratings for modules with output relays.

Load Condition

Current (Amps)

125Vac

P.F. = 1
P.F. = 0.7
P.F. = 0.4

0.6
0.4
0.2

250Vac

P.F. = 1
P.F. = 0.7
P.F. = 0.4

0.9
0.6
0.3

30Vdc

L/R = 1ms
L/R = 7mS
L/R = 15mS

0.6
0.3
0.15

P.F. = power factor for AC inductive loads
L/R = time constant for DC inductive loads

E-1

125Vac

Figure 396

User Manual

Appendix E

GFK-1645M

Dec 2019

Relay Contact Ratings

632

E-2

250Vac

Figure 397

E-3

30Vdc

Figure 398

USER MANUAL

GFK-1645M

Dec 2019

Technical Support & Contact Information

Home link:

http://www.Emerson.com/Industrial-Automation-Controls

Knowledge Base:

https://www.emerson.com/Industrial-Automation-Controls/support

Note: If the product is purchased through an Authorized Channel Partner, please contact the seller directly for any support.

Emerson reserves the right to modify or improve the designs or specifications of the products mentioned in this manual at any time without
notice. Emerson does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use
and maintenance of any Emerson product remains solely with the purchaser.

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