Xylem IM167 R8 Aquavar CPC (Centrifugal Pump Control) - Manual (Page 116)

116
Correcting Faults
The recommended corrective action for faults is:
• Use the “Fault Listing” table below to find and address the root cause of the problem.
• Reset the drive. See “Fault Resetting” on page 119.
* Drive not ready fault. Check supply voltage / DC Bus = 1.35 x input voltage.
* Comm fault drive not responding. Internal communication lost.
• Cycle Power • Remove and reinstall panel • Replace panel
Fault Listing
Fault Fault Name
Description and Recommended Corrective Action
Code In Panel
1 OVERCURRENT Output current is excessive. Check for and correct:
• Excessive motor load, pump overload.
• Insufficient acceleration time (parameters 1301 Ramp 1 and 1302 Ramp 2).
• Faulty motor, motor cables or connections.
2 DC OVERVOLT Intermediate circuit DC voltage is excessive. Check for and correct:
• Static or transient overvoltages in the input power supply.
• Insufficient deceleration time (parameters 1302 Ramp 2, increase to at least
8 seconds).
3 DEV OVERTEMP Drive heatsink is overheated. Temperature is at or above 115º C (239º F).
Check for and correct:
• Fan failure • Excessive ambient temperature
• Obstructions in the air flow • Excessive motor load
• Dirt or dust coating • Ambient temperature
on the heat sink • Altitude
4 SHORT CIRC Fault current. Check for and correct:
• A short-circuit in the motor cable(s) or motor
• Supply disturbances
5 OVERLOAD Inverter overload condition. The drive output current exceeds the ratings given
in “Ratings” on pages 131-134 of this manual.
6 DC UNDERVOLT Intermediate circuit DC voltage is not sufficient. Check for and correct:
• Missing phase in the input power supply
• Blown fuse/check input wiring
• Undervoltage on mains
7 AI 1 LOSS Analog input 1 loss. Analog input value is less than AI 1 MIN (1604).
Check for and correct:
• Source and connection for analog input.
• Parameter settings for AI 1 MIN (1604).
8 AI 2 LOSS Analog input 2 loss. Analog input value is less than SENSOR MIN (1506).
Check for and correct:
• Source and connection for analog input.
• Parameter settings for SENSOR MIN (1506) and (1503) TRANSDUCER MIN .
9 MOT OVERTEMP Motor is too hot, based on either the drive’s estimate or on temperature
feedback device.
• Check for overloaded motor.
• Adjust the parameters used for the estimate (1104…1109).
• Check the temperature sensors and Group 11 parameters.
• Check motor wiring and connections. Possible MOTOR phase loss.
FAULTS/ALARMS