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Rockwell Automation Publication 825-UM004D-EN-P - November 2012
Chapter 11
Testing & Troubleshooting
Contact Output Verification
Disconnect the MCM converter module cable from the connector on the rear
panel of the 825-P. Use the front panel MAIN > TARGETS > ROW 3 function
to check that MCM/CWEFLT, Bit 0, is equal to one. Use MPS Explorer
software to make TRIPC = 0 0 0 0 0 0 0 1 which closes the Trip contact.
Set AUX2C = 0 0 0 0 0 0 0 1. This will cause the AUX2 contact to close. Repeat
the process for AUX3
…
AUX6, if present. Ensure that each contact closure
produces the result that is needed in its associated annunciation, control, or trip
circuit [remove control power to close the AUX1 (Alarm) contact].
Self-Tests
The 825-P runs a variety of self-tests. As shown in Table 89, when the relay
detects certain self-test failures, the Critical Alarm Status is latched. A latched
Critical Alarm Status closes the Trip contact and displays the associated message
on the front panel.
When the Critical Alarm Status column in Table 89 shows Not Latched, the trip
contact will not close because of the self-test failure. However, the associated
message (if present) is displayed on the front panel.
All relay self-test failure messages are automatically sent to the serial port.
Table 89 - Relay Self-Tests (Sheet 1 of 2)
Self-Test
Description
Limits
Protection
Disabled on
Failure
Critical
Alarm Status
Front Panel Message
on Failure
External RAM
Performs a read/write test on system RAM
Yes
Latched
External RAM FAILED
Internal RAM
Performs a read/write test on CPU RAM
Yes
Latched
Coldfire RAM FAILED
CR_RAM
Performs a checksum test on the active copy of settings Checksum
Yes
Latched
CR_RAM FAILED
Code Flash
Checksum is computed on code base
Checksum
Yes
Latched
PROGRAM MEMORY FAILED
Mainboard EEPROM
Checksum is computed on critical data
Checksum
Yes
Latched
EEPROM FAILED
Data Flash
Checksum is computed on critical data
Checksum
Yes
Latched
FLASH FAILED
Front Panel
Check if ID register matches expected
No
Not Latched
Voltage Board
Check if ID register matches part number
Yes
Latched
VT CALIBRATION FAILED
Current Board
Check if ID register matches part number
Yes
Latched
CT CALIBRATION FAILED
I/O Board
Check if ID register matches part number
Yes
Latched
I/O BOARD FAILURE
DeviceNet Board
DeviceNet card does not respond in 500 ms.
Yes
Latched
DEVICENET BOARD FAILURE
CPU Exception Vector
CPU error
Yes
Latched
Vector nn
Loss of MCU Crystal
Clock stopped
Yes
Latched
CLOCK STOPPED
Current Board A/D Offset
Measure DC offset at each input channel
50 mV
No
Not Latched
Voltage Board A/D Offset
Measure DC offset at each input channel
50 mV
No
Not Latched
+3.3V Warn
M3.3V power supply
<3.43V
>3.13V
No
Not Latched
+3.3V Fail
M3.3V power supply
<3.07V
>3.53V
Yes
Latched
+3.3V FAIL
+5V Warn
M5V power supply
<5.2V
>4.8V
No
Not Latched
Summary of Contents for 825-P
Page 1: ...Modular Protection System for Motors Catalog Number 825 P User Manual...
Page 4: ...4 Rockwell Automation Publication 825 UM004D EN P November...
Page 64: ...64 Rockwell Automation Publication825 UM004D EN P November 2012 Chapter 5 Using MPS Explorer...
Page 234: ...234 Rockwell Automation Publication 825 UM004D EN P April 2012 Chapter B ParameterList...
Page 265: ......
