Xylem IM244R04 SPD Plus Variable Speed Pump Control User Manual
Page 24
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SECTION 9: TROUBLESHOOTING
(CONTINUED)
FAULT LISTING
Fault
Code
Fault Name In Panel
Description and Recommended Corrective Action
8
TRANSDUCER LOSS
Signal from the pressure transducer is out of range. Check for and correct:
• Source and connection for analog input.
• Vacuum in the system. Remove sensor from piping to release vacuum.
• Failed pressure transducer. To diagnose this failure a meter capable of
reading milliamperes (mA) and DC voltage (VDC) is required.
- Set the meter to read DC voltage (VDC)
- Place the black lead on terminal 11 (GND) and the red lead on terminal
10 (+24VDC SUPPLY)
- If functioning properly, the DC voltage will be 24VDC +/- 10%. If this
voltage is not present, disconnect all control terminals and repeat the
measurement. If voltage does not recover, replace controller.
- Disconnect the White wire in the sensor cable from terminal 5.
- Set the meter to read DC current (mA)
- Connect the black lead from the meter to terminal 5
(AI2, TRANSDUCER INPUT)
- Connect the red lead from the meter to the White wire in the sensor
cable.
- The meter will display the output of the sensor. If functioning properly,
the output of the sensor will be between 4mA and 20mA depending
on the pressure in the system. Refer to the chart below to determine
the sensor feedback at various pressures.
NOTE: The controller is programmed to automatically reset the Transducer
Loss Fault every 10 seconds for 1 minute. If the fault is not corrected in this
time the fault must be reset by pressing reset on the keypad or by cycling
power to the controller.
9
MOT OVERTEMP
Motor is too hot, based on the controller's estimate.
• Check for overloaded motor.
• Enter the Start-Up Assistant and ensure motor parameters are set
correctly.
10
PANEL LOSS
Panel communication is lost drive is in local control mode (LOC). Check for
and correct:
• Communication lines and connections
12
MOTOR STALL
Motor stall. Motor is operating in stall region. Check for and correct:
• Excessive motor load.
• Insufficient motor power.
• Bound pump.
Pressure (PSI)
Tr
ansducer Output (mA)
Pressure Transducer Output vs. Applied Pressure
for a 300 PSI, 4-20mA Output Transducer
0
50
100
150
200
250
300
0
4
8
12
16
20
24