Xylem IM224 R03 Hydrovar Variable Speed Control HV, 2HP-15HP Version 0307 - Manual (Page 7)

Commercial Water
Xylem Inc.
PAGE 7
Check the following values:
Black Wire (GND) Red Wire of Multimeter Result
Rectifier Values
L1
L2 DC+ OL (Overload)
L3
L1
L2
DC– 0.40 - 0.54 V
L3
L1
DC+ L2 0.40 - 0.54 V
L3
L1
DC– L2 OL (Overload)
L3
IGBT Values
U
DC+ V 0.420 - 0.635 V
W
U
DC– V OL (Overload)
W
U
V
DC+ OL (Overload)
W
U
V
DC- 0.40 - 0.45 V
W
NOTE: Put multimeter on diode check ( ).
Result:
- If the above mentioned values between power supply and DC part are significantly different
=> Rectifier may be damaged.
- If values between motor connection and DC part are significantly different
=> IGBT module may have a failure.