Wesley BC-620-4CA User Manual
Page 119
Curtis 1234/36/38 Manual,
OS
11
115
2 3 J U LY 2 0 0 8 D R A F T
Table 5 TROUBLESHOOTING CHART, continued
PROGRAMMER LCD DISPLAY
CODE
EFFECT OF FAULT
POSSIBLE CAUSE
SET/CLEAR CONDITIONS
8 — DIAGNOSTICS & TROUBLESHOOTING
35
PD Open/Short
1. Open or short on driver load.
Set: Proportional driver (pin 2) is either
ShutdownPD.
2. Dirty connector pins.
open or shorted.
3. Bad crimps or faulty wiring.
Clear: Correct open or short, and cycle driver.
36
Encoder Fault
1. Motor encoder failure.
Set: Motor encoder phase failure detected.
ShutdownEMBrake.
2. Bad crimps or faulty wiring.
Clear: Cycle KSI.
3. See Monitor menu » Motor:
Motor RPM.
37
Motor Open
1. Motor phase is open.
Set: Motor phase U, V, or W detected
ShutdownMotor;
2. Bad crimps or faulty wiring.
open.
ShutdownMainContactor;
Clear: Cycle KSI.
ShutdownEMBrake;
ShutdownThrottle;
FullBrake;
ShutdownPump.
38
Main Contactor Welded
1. Main contactor tips are welded
Set: Just prior to the main contactor
ShutdownMotor;
closed.
closing, the capacitor bank voltage (B+
ShutdownMainContactor;
2. Motor phase U or V is disconnected connection terminal) was loaded for a
ShutdownEMBrake;
or open.
short time and the voltage did not
ShutdownThrottle;
3. An alternate voltage path (such as an discharge.
FullBrake;
external precharge resistor) is
Clear: Cycle KSI
ShutdownPump.
providing a current to the capacitor
bank (B+ connection terminal).
39
Main Contactor Did Not Close 1. Main contactor did not close.
Set: With the main contactor commanded
ShutdownMotor;
2. Main contactor tips are oxidized,
closed, the capacitor bank voltage (B+
ShutdownMainContactor;
burned, or not making good contact. connection terminal) did not charge to B+.
ShutdownEMBrake;
3. External load on capacitor bank
Clear: Cycle KSI.
ShutdownThrottle;
(B+ connection terminal) that pre-
FullBrake;
vents capacitor bank from charging.
ShutdownPump.
4. Blown B+ fuse.
41
Throttle Wiper High
1. See Monitor menu » Inputs:
Set: Throttle pot wiper (pin 16) voltage
ShutdownThrottle.
Throttle Pot.
is higher than the high fault threshold
2. Throttle pot wiper voltage too high.
(can be changed with the VCL function
Setup_Pot_Faults()
).
Clear: Bring throttle pot wiper voltage
below the fault threshold.
42
Throttle Wiper Low
1. See Monitor menu » Inputs:
Set: Throttle pot wiper (pin 16) voltage
ShutdownThrottle.
Throttle Pot.
is lower than the low fault threshold
2. Throttle pot wiper voltage too low.
(can be changed with the VCL function
Setup_Pot_Faults()
).
Clear: Bring throttle pot wiper voltage
above the fault threshold.
43
Pot2 Wiper High
1. See Monitor menu » Inputs:
Set: Pot2 wiper (pin 17) voltage
FullBrake.
Pot2 Raw.
is higher than the high fault threshold
2. Pot2 wiper voltage too high.
(can be changed with the VCL function
Setup_Pot_Faults()
).
Clear: Bring Pot2 wiper voltage below
the fault threshold.