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8-6 Troubleshooting MN792
Self Test Alarms
Self Test Alarm and Meaning Possible Reason for Alarm
(EEPROM) CHECKSUM FAIL
Parameters not saved, or are corrupted.
(The alarm appears at power–up or at the end of “Upload” UDP Transfer)
Corrupted UDP file loaded – press the E key and perform a PARAMETER SAVE. The
control will be returned to its factory default values.
ENABLE CONFIG.
The ENABLE CONFIG. parameter has
been left in the Enable state.
Select Disable for the ENABLE CONFIG. parameter
LANGUAGE CHECKSUM FAIL
Incorrect language selected, or
corrupted
(The alarm appears at power–up or at the end of “Upload” UDP Transfer)
Corrupted UDP file loaded – press the E key and reload the correct language or de–select
the second language.
INIT CAL FAIL
Self calibration of analog inputs has
exceeded normal tolerance
(The alarm appears at power–up)
As a temporary measure, the tolerance can be increased by 0.1% with each press of the
E key, however, this indicates a hardware fault – contact Baldor.
IA FBK CAL FAIL / IA INST CAL FAIL
The self calibration of the armature
current has failed
(The alarm appears at power–up)
If powering the unit off and on does not remove the problem, a hardware failure is
suspected. Contact Baldor.
Setting Trip Conditions The following parameters in the CALIBRATION menu are used to set trip conditions:
Over Speed Level
SPDFBK ALM Level
Stall Threshold
Stall Trip Delay
Remote Trip Delay
Viewing Trip Conditions
The following parameters in the Level 1 ALARM STATUS menu can be viewed to investigate trip conditions:
LAST ALARM
HEALTH WORD
HEALTH STORE
THERMISTOR STATE
SPEED FBK STATE
STALL TRIP
REMOTE TRIP
Inhibiting Alarms
The following alarms can be inhibited in the Setup Parameters::INHIBIT ALARMS menu.
FIELD FAIL
5703 RCV ERROR
STALL TRIP
TRIP RESET
SPEED FBK ALARM
ENCODER ALARM
REM TRIP INHIBIT
Note: The Stall Trip parameter in the Diagnostics menu is set regardless of the state of Stall Trip inhibit. The flag
is set after the stall time–out expires. The relevant bit (bit 12) in the Health Word and Health Store
parameters is only set when Stall Trip is enabled.