Danaher Motion SERVOSTAR CD-LITE - No Message Faults; Fault Monitoring System

Troubleshooting Danaher Motion Kollmorgen Speciality Electronics
22 SERVOSTAR CD-LITE User Manual
NO MESSAGE FAULTS
Status
Display Fault Description
Fatal
Error
Non-Fatal
Error
F
lashing
Display
Steady
Display
≡
Watchdog * *
-1 No Compensation * *
-2 Invalid Velocity Control * *
-6 Failure while writing to the personality module * *
-7 Failure while reading from the personality module * *
L 1 Hardware CW limit switch open * *
L 2 Hardware CCW limit switch open * *
L 3 Hardware CW and CCW limit switches open * *
A 3 Positive and negative analog supply fail * *
I RAM failure (during init) * *
c EPROM checksum (during init) * *
8 Test LED *
Fault Monitoring System
The SERVOSTAR CD-Lite’s microprocessor is constantly monitoring the status of many different
components. In general, all fault conditions are latched so you can readily determine the source of the
problem. When a fault is detected, it is logged in the internal error log, indicated in the status display,
enunciated over the serial port, and in most conditions causes a drive disable. Many faults can be reset
by toggling the hardware remote enable (REMOTE input). The following is a list of the more frequent
faults the drive detects in the unit hardware and operating system.
Motor OverTemperature: The Motor’s External Thermostat input is monitored for an open circuit
condition. The user can define (using THERMODE) what happens under this fault condition. The worst
case event is a power stage disable when an ‘H’ appears in the status display, and the fault relay contacts
(RELAY) are open.
Drive OverTemperature: The internal heatsink temperature is monitored for an unsafe condition. This
condition causes a ‘t’ to be displayed and disables the drive. The drive will eventually cool enough to
allow reset of this condition.
RMS OverCurrent (FoldBack): The FoldBack detection system can ‘clamp’ the available output
current. This is not a true fault condition, but may cause undesired performance, due to the command
current being limited below what is required to achieve the desired performance. This condition is
indicated with a flashing ‘F’ in the status display and can be detected by monitoring the FOLD switch
variable.
Bus OverVoltage: An over-voltage condition shuts down the drive and displays a lower-case ‘o’ in the
status display. This fault occurs mostly during regen operation where the BUS is raised to higher values
than that produced by the power supply.
Bus UnderVoltage: An under-voltage condition shuts down the drive and displays an ‘u’ in the status
display. This fault normally occurs when the incoming line voltage drops out or a fault occurs in the
power supply.
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