92
Unidrive M100 / M101 Control User Guide
Issue Number: 1
PH.Lo
Supply phase loss
32
The
PH.Lo
trip indicates that the drive has detected an input phase loss or large supply imbalance. The drive will attempt to
stop the motor before this trip is initiated. If the motor cannot be stopped in 10 seconds the trip occurs immediately. The
PH.Lo
trip works by monitoring the ripple voltage on the DC bus of the drive, if the DC bus ripple exceeds the threshold, the
drive will trip on PH.Lo. Potential causes of the DC bus ripple are input phase loss, Large supply impedance and severe
output current instability.
Input phase loss detection can be disabled when the drive is required to operate from the DC supply or from a single phase
supply in
Input Phase Loss Detection Mode
(06.047).
Recommended actions:
•
Check the AC supply voltage balance and level at full load
•
Check the DC bus ripple level with an isolated oscilloscope
•
Check the output current stability
•
Check for mechanical resonance with the load
•
Reduce the duty cycle
•
Reduce the motor load
•
Disable the phase loss detection, set Pr
06.047
to 2.
PSU
Internal power supply fault
5
The
PSU
trip indicates that one or more internal power supply rails are outside limits or overloaded.
Recommended actions:
•
There is a hardware fault within the drive – return the drive to the supplier
r.b.ht
Hot rectifier/brake
250
Over-temperature detected on input rectifier or braking IGBT.
Recommended action:
•
Increase ventilation by setting
Cooling Fan Control
(06.045) > 0.
Reserved
Reserved trips
01
09
12
14-17
23, 29
38, 39
90 - 91, 92, 94 - 96
99
101 - 109
111
168 - 172
176 - 177
190 - 198
205 - 217
222 - 224
229 - 230, 233
238 - 244
249, 251 - 254
These trip numbers are reserved trip numbers for future use.
Trip
Diagnosis
Source
xx
y
zz
Control
system
00
0
00: Phase loss detected based on control system feedback. The drive
attempts to stop the drive before tripping unless bit 2 of
Action On Trip
Detection
(10.037) is set to one.
Source
xx
y
zz
Description
Control
system
00
0
00
Internal power supply overload.
Power
system
01
1
Trip Number
Description
01, 09, 12, 14-17, 23, 29, 38, 39 Reserved resettable trip
90, 91, 92, 94-96, 99
Reserved resettable trip
101 - 109, 111
Reserved resettable trip
168-172, 176-177
Reserved resettable trip
190 – 198
Reserved resettable trip
205-217
Reserved resettable trip
222-224
Reserved non-resettable trip
229-230, 233
Reserved non-resettable trip
238 - 244, 249
Reserved non-resettable trip
251-254
Reserved non-resettable trip
Summary of Contents for Unidrive M100
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