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Choosing a power supply – Rockwell Automation 1764-xxxx MICROLOGIX 1500 PROGRAMMABLE CONTROLLERS User Manual

Page 110

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Publication 1764-UM001B-EN-P - April 2002

A-2 Specifications

Choosing a Power Supply

This section contains information for selecting a power supply for
applications using a 1764-28BXB base unit. Use the tables in
Appendix F to calculate the total power (Watts) consumed by the
system. With that information, use the graphs below to chose a power
supply. You can use either current or power, depending on how the
power supply is rated.

Figure 1.1 Input Current Required

Electrical/EMC

The module has passed testing at the following levels:

EN61000-4-2: 4 kV contact, 8 kV air, 4 kV indirect

EN61000-4-3: 10 V/m

EN61000-4-4: 2 kV, 5 kHz; communications cable: 1 kV, 5 kHz

EN61000-4-5: communications cable1 kv galvanic gun

-I/O: 2 kV CM, 1 kV DM,
-Power Supply (1764-24AWA/1764-24BWA): 4 kV CM, 2 kV DM
-Power Supply (1764-28BXB): 0.5 kV CM, 0.5 kV DM

EN61000-4-6: 10V, communications cable 3V

Terminal Screw
Torque

1.13 Nm (10 in-lb) rated; 1.3 Nm (12 in-lb) maximum

Programming
Software

For 1764-LSP Series A Processors: RSLogix 500,
Version 3.01.09 or higher
For 1764-LSP and 1764-LRP Series B Processors: RSLogix 500,
Version 4.00.00 or higher.

(1) Recommended storage temperature for maximum battery life (5 years typical with normal operating/storage

conditions) of the 1764-RTC, 1764-MM1RTC, and 1764-MM2RTC is -40°C to +40°C (-40°F to +104°F). Battery
life is significantly shorter at elevated temperatures.

(2) See Choosing a Power Supply on page A-2.

Table A.1 General Specifications

Description

1764-24BWA

1764-24AWA

1764-28BXB

0

0.2

0.4

0.6

0.8

1

1.2

1.4

0

2

4

6

8

10

12

14

16

18

In

pu

t C

ur

re

nt

R

equ

ir

ed

a

t 2

4V

dc

(A

m

per

es

)

Power Consumption (Watts)