Fault Codes and Troubleshooting
• If no fault condition exists, the LED will be green.
• If a fault condition exists, the LED will be continuously red when a local keypad is
connected, or flashing red when a local keypad is not connected.
• All faults can be reset by cycling the reset control input, pressing the stop key, or
cycling power, except as noted in Corrective Action in the table below.
Number of
Display
Fault LED
Fault
Code
Flashes
Description
CF
2
Control Input
Illegal control input
sequence.
FL
2
Function Loss
Start attempt while
STOP (Function Loss)
input is off.
LU
3
1
- Low input line.
Under Voltage
- Temporary loss of
input line.
HU
4
1
- High input line.
Over Voltage
- Decel time too fast.
- Overhauling load.
dO
5
1
Excessive driven load.
Drive Overload
OL
5
1
Excessive driven load.
Motor Overload
OH
6
Over
- Operating environment
1
is too hot.
Temperature
- Fan is blocked or not
operating.
- Excessive driven load.
OC
7
1
- Shaft rotation blocked.
Over Current
(300%)
- Excessive driven load.
- Output wiring is
incorrect or shorted.
CL
8
Bad Keypad
Bad connection from
Connection
keypad to drive.
UF
9
Negative Slope
Conflicting parameter
values.
J1
10
Ground Short
Phase U
J2
10
Phase V
J3
10
Phase W
J4
10
Phase to Phase
Phase U - V
Short
J5
10
Phase U - W
J6
10
Phase V - W
CH
11
Checksum Failure Parameter value out of
range.
UP
12
Microprocessor
Internal processor error. Cycle power. If fault persists,
Fault
1
Auto Resettable
16
Fault Cause
Corrective Action
- 3-wire: Verify Start and Jog
inputs are not both ON.
- 2-wire: Verify that only one
input (Forward, Reverse, or
Jog) is on.
Verify STOP (Function Loss)
input is ON before attempting
to start drive.
Check input line to verify
voltage is within operating
specifications.
- Check input line to verify
voltage is within operating
specifications.
- Increase decel time.
Reduce the load.
- Verify P-02 is set correctly.
- Reduce the load.
- Verify the ambient
temperature is < 50 °.
- Verify clearance above/
below drive.
- Check for fan obstruction.
Replace fan if required.
- Reduce the carrier
frequency (P-64).
- Reduce the load.
- Check for obstructions to
shaft rotation or reduce
excessive load.
- Increase accel / decel time.
- Verify output wiring is
correct.
Verify keypad is properly
connected to drive.
Adjust values of parameters -
P-50 through P-54.
- Verify output wiring is correct
- Verify output phase is not
grounded.
- Verify motor is not damaged.
- Verify output wiring is
correct.
- Verify motor is not damaged.
Load default parameter values
(P-60 =1), then cycle power. If
fault persists, replace drive.
replace drive.
SP200 AC Drive Quick Start Guide