GE Industrial Solutions AF-600 FP Fan & Pump Drive (230V to 60HP, 460_575V to 125HP) - Manual (Page 60)

9 Basic Troubleshooting
9.1 Start Up and Operation
Symptom Possible Cause Test Solution
Display dark / No function
Missing input power See Table 3.1. Check the input power source.
Missing or open fuses or circuit
breaker tripped
See open fuses and tripped circuit
breaker in this table for possible
causes.
Follow the recommendations
provided
No power to the keypad Check the keypad cable for proper
connection or damage.
Replace the faulty keypad or
connection cable.
Shortcut on control voltage
(terminal 12 or 50) or at control
terminals
Check the 24V control voltage
supply for terminal 12/13 to 20-39
or 10V supply for terminal 50 to 55.
Wire the terminals properly.
Wrong contrast setting Press [Status] + Up/Down arrows
to adjust the contrast.
Display (keypad) is defective Test using a different keypad. Replace the faulty keypad or
connection cable.
Internal voltage supply fault or
SMPS is defective
Contact supplier.
Intermittent display
Overloaded power supply (SMPS)
due to improper control wiring or
a fault within the drive
To rule out a problem in the
control wiring, disconnect all
control wiring by removing the
terminal blocks.
If the display stays lit, then the
problem is in the control wiring.
Check the wiring for shorts or
incorrect connections. If the display
continues to cut out, follow the
procedure for display dark.
Motor not running
Service switch open or missing
motor connection
Check if the motor is connected
and the connection is not
interrupted (by a service switch or
other devise).
Connect the motor and check the
service switch.
No mains power with 24V DC
option card
If the display is functioning but no
output, check that mains power is
applied to the drive.
Apply mains power to run the unit.
Keypad Stop Check if [Off] has been pressed. Press [Auto] or [Hand] (depending
on your operation mode) to run
the motor.
Missing start signal (Standby) Check E-01 Terminal 18 Digital Input
for correct setting for terminal 18
(use default setting).
Apply a valid start signal to start
the motor.
Motor coast signal active
(Coasting)
Check if a coast inv command is
programmed for the terminal in
parameter group E-0# Digital
Inputs
Apply 24V on terminal or
programm this terminal to No
operation.
Wrong reference signal source Check reference signal: Local,
remote or bus reference? Preset
reference active? Terminal
connection correct? Scaling of
terminals correct? Reference signal
available?
Program correct settings Check
F-02 Operation Method Set preset
reference active in parameter
C-05 Multi-step Frequency 1 - 8 .
Check for correct wiring. Check
scaling of terminals. Check
reference signal.
Basic Troubleshooting AF-600 FP Operating Instructions
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