Delta ASDA-A2 Series User Manual page 607

A2
ASDA-
: Overload
Potential Cause
The drive has
exceeded its rated
load during
continuous
operation.
Control system
parameter setting is
incorrect.
The wiring of drive
and encoder is in
error.
The encoder of the
motor is damaged.
: Overspeed
Potential Cause
Speed input
command is not
stable (too much
fluctuation).
Over-speed
parameter setting is
defective.
: Abnormal pulse control command
Potential Cause
Pulse command
frequency is higher
than rated input
frequency.
: Excessive deviation
Potential Cause
Maximum deviation
parameter setting is
too small.
Gain value is too
small.
Torque limit is too
low.
There is an overload. Check for overload condition.
10-12
Checking Method
Check if the drive is overloaded. The
users can set parameter P0-02 (Drive
Fault Code) to 11 and monitor if the
value of the average torque [%] exceeds
100% always.
1. Check if there is mechanical vibration
2. Accel/Decel time setting is too fast.
Check the wiring of U, V, W and
encoder.
Please contact your distributor for assistance or contact with Delta.
Checking Method
Use signal detector to detect if input
signal is abnormal.
Check if over-speed parameter setting
value is too low.
Checking Method
Use pulse frequency detector to measure
input frequency.
Checking Method
Check the maximum deviation
parameter setting and observe the
position error value when the motor is
running.
Check for proper gain value.
Check torque limit value.
Chapter 10 Troubleshooting
Corrective Actions
Increase motor capacity or
reduce load.
1. Adjust gain value of control
circuit.
2. Decrease Accel/Decel time
setting.
Ensure all wiring is correct.
Corrective Actions
Ensure that input command
frequency is stable (not
fluctuate too much) and
activate filter function.
Correctly set over-speed
parameter setting (P2-34).
Corrective Actions
Correctly set the input pulse
frequency.
Corrective Actions
Increases the parameter
setting value of P2-35.
Correctly adjust gain value.
Correctly adjust torque limit
value.
Reduce external applied load
or re-estimate the motor
capacity.
Revision September 2012