Repair – Rockwell Automation 1797-OB4D FLEX Ex 24V DC Nonisolated Source 4 Output Module User Manual

Page 14

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14 FLEX Ex I/O 24V DC 4 Non-Isolated Source Output Module

Publication

1797-5.6 - June 2011

Repair

This module is not field-repairable. Any attempt to open this module will void
the warranty and IS certification. If repair is necessary, return this module to
the factory.

Alarm Filter

These 3 bits are used to set the time constant of the fault/overload alarm
filter for channels 0…3.

Default = 0

Reset Alarms

With this bit, wire off/overload faults are reset and the latch condition of
the outputs cancelled. See Latch Alarms (LA). To reset the wire
off/overload faults set the RA bit to 1 and back to 0. The reset will not
occur until a 0 > 1 > 0 transition occurs.

RSLogix 5000 Software Tip: The Reset Alarms bit is found in the Module
Configuration word. Program a Module Reconfigure typed MSG to set and
then clear the RA bit.

0 = Normal

1 = Reset

Default: 0

Field Descriptions

Value Binary

Time constant

000

0.25 ms (Hardware)

001

0.5 ms

010

1 ms

011

2 ms

100

4 ms

101

8 ms

110

16 ms

111

32 ms

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