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