M561-00-880 Issue C
Page 72 © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Appendix A2
Example:
PDT shows the following:
0108 0200
This translates to:
alarm 1 in bit 2 – PWM_TRIP
alarm 8 in bit 4 – OVERT
warning 2 in bit 6 - HIGHTM.
This means the motor overheated and switched the output off.
Table A19 - Inverter warnings codes
Inverter warnings
BIT
Fault Code
Combination
Name Description
5 8 SELFTEST_WARNING Inverter diagnostic registers also checked, as per
Tab le A2 0, and text output as per that table.
4 Reserved Reserved
2 LOWTW Condensation warning, indicates that the inverter (water)
temperature is lower than expected – possible causes
include inverter water valve stuck open.
1 HIGHTW Indicates that the inverter temperature is higher than
expected – possible causes include no or low cooling water
flow, inverter water valve stuck closed or water pipe to
inverter blocked.
6 8 HIGHTC Controller temperature above upper limit / Controller
temperature sensor open circuit - check water supply
4 HIGHTS Inverter heat-sink temperature above upper limit /
Inverter heat-sink temperature sensor open circuit - check
water supply
2 HIGHTM Motor temperature above upper limit / Motor temperature
sensor open circuit - check water supply
1 MISSING_PHASE The loss of one of the three input phases has been
detected - check mains supply to drive or blown fuses
7 8 UTCREG Upper controller temperature regulator active - current
limit reduced - check cooling
4 UTSREG Upper heat sink temperature regulator active - current
limit reduced - check cooling
2 Reserved Reserved
1 LVREG Lower voltage regulator active - check mains voltage
8 8 LOWVCC Internal power supply fault - contact Edwards
4 LOWTC Low controller temperature - contact Edwards
2 LOWTS Low heatsink temperature - contact Edwards
1 CAN LOSS Normally due to loss of can bus communication on dual
drive system, check usb lead is connected between master
and slave drives.
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