Eurotherm Drives 590 DRV Digital, Product Manual

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590 DRV Digital DC Drive Product Manual
5
Chapter 5 Troubleshooting
Bit MMI Alarm Description Hex Value Inhibit? Delay Time
8 FIELD FAILED field current too low 0x0100 yes ---
9 3 PHASE FAILED 3 phase supply input not present 0x0200 no ---
10 PHASE LOCKED AC synchronization failed 0x0400 no 0.5 sec
11 5703 RECEIVER ERROR P3 port receiver error (noisy or failed) 0x0800 yes ---
12 STALL TRIP motor stall trip timed-out 0x1000 yes ---
13 OVER I TRIP motor armatue overcurrent 0x2000 no ---
14 CAL CARD calibration card not fitted 0x4000 no ---
15 ACCTS FAILED external ACCTs not connected 0x8000 no ---
-- AUTOTUNE ERROR autotune operational error (shaft rotate) ------------ no ---
-- AUTOTUNE ABORT autotune execute aborted or timed-out ------------ no ---
This example shows how HEALTH WORD, HEALTH STORE, and LAST ALARM are updated.
During operation, the controller trips on P3 PORT ALARM (0x0800), the drive loses three-phase power when an SCR
fuse blows (0x0200) and the motor overheats causing the thermistor to open (0x0010). HEALTH WORD is:
0x0010 = 0x0A10.
HEALTH WORD HEALTH STORE LAST ALARM
0x0A10 0x0800 P3 PORT ALARM
During troubleshooting, the motor cools down and the thermistor closes.
HEALTH WORD HEALTH STORE LAST ALARM
0x0A00 0x0800 P3 PORT ALARM
The P3 PORT ALARM is cleared and the drive is restarted and immediately trips with a 3 PHASE FAILED alarm.
HEALTH WORD HEALTH STORE LAST ALARM
0x0200 0x0200 3 PHASE FAILED
The fuse is replaced and three-phase power is turned on.
HEALTH WORD HEALTH STORE LAST ALARM
0x0000 0x0200 3 PHASE FAILED
The drive is restarted.
HEALTH WORD HEALTH STORE LAST ALARM
0x0000 0x0000 3 PHASE FAILED
NOTE. Before restarting a drive after troubleshooting the first alarm, it is good practice to monitor
HEALTH WORD to assure all alarms have been cleared. This can reduce down time.