Possible Drive Problems And Corrective Actions; Table 4.2 - Drive Problems - Reliance electric SP120 Manual De Instrucciones Y Operación

4.3 Possible Drive Problems and Corrective Actions

Problem
The motor does not start.
The direction of motor
rotation is incorrect.
The motor does not
accelerate properly.
The motor runs unstable.
Troubleshooting the Drive
Table 4.2 – Drive Problems
1. Check the power circuit
•
Check the supply voltage
•
Check all fuses and disconnects
2. Check the Motor
•
Verify that the motor is connected properly
•
Verify that no mechanical problems exist
3. Check the control input signals
•
Verify that the start signal is present
•
Verify that either the Run Forward or Run Reverse signal is active, but not
both
•
Verify wiring of H, O, and L terminals if a remote speed pot is being used.
•
If using 3 wire start, ensure that a 3 wire stop is programmed.
•
Verify that the reset command {RS} is not active
4. Check the setting of A01 [
5. Check setting of A02 [
•
If set to keypad start, check F04 [
00 {FW} or 01 {RV} digital input must be active before pressing START.
1. Check the motor output connections. Reverse two of the three phases if
necessary.
2. Check that the control inputs have been wired correctly.
3. If using 3-wire control, ensure that the 3-wire forward/reverse input is
programmed.
4. Check setting of F04 [
1. Check to see that a frequency has been commanded.
2. Check to see if a preset frequency has been selected.
3. Check to see if the motor load is too high.
4. Check to see if the acceleration time is too long.
5. Check to see if manual boost and current limit are set properly.
1. If sudden high load changes occur, choose a drive and motor with higher
ratings or reduce the load changes.
2. If resonant frequencies occur in the motor, set up skip frequency bands.
3. If the input voltage is not constant, change the PWM carrier frequency.
Corrective Action
FREQUENCY COMMAND SELECT
START COMMAND SELECT
START KEY DIRECTION
]
START KEY DIRECTION
English
]
]
]; when set to 02, the
4-3