Trips and Fault Finding  7-17 
DC590+ Series DC Digital Drive    
Trip Message and Meaning  Possible Reason for Trip 
SEQUENCING 
Internal sequencing error 
 
Contact Parker SSD Drives 
COMMS TIMEOUT 
Remote comms timeout 
 
See COMMS TIMEOUT parameter in the SEQUENCING function block 
CONFIG ENABLED   
The drive was requested to start whilst in Configuration mode 
CALIBRATION FAIL   
Signal calibration fault 
If powering the unit off and on does not remove the problem, a hardware failure is 
suspected. Refer to Parker SSD Drives. 
NO OP STATION   
Keypad has been disconnected from Drive whilst Drive is running in local control. 
AUX SUPPLY  Check auxilliary supply and/or mains input 
COMMS FAULT CODE x   
Keypad faulty 
Remote cable to keypad faulty 
Drive firmware not running 
CRITICAL ERROR 
xxxx::xxxxxxxx 
 
Contact Parker SSD Drives 
Table 7-2  Trip Messages 
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 Drive will be returned to its factory default values. 
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.