SD710 Series Servo Drive User Manal Chapter 10 Troubleshooting
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10.2.8 Causes of unusual alarms and how to deal with them
Error code
ER. 020
User function code Parameters and checksum exception
Reason
The unit internally checks the function code (user Parameters group) and the function code
Parameters and checksum failure occurs when the checksum fails.
Treatment.
Reasons
Confirmation method
Handling measures
1. Instantaneous dips in
control supply voltage.
◆
Measure the supply voltage.
Set the power supply voltage
within the specified range and
carry out the initialization of
the parameters setting value
(Fn005).
2. Instant power off during
parameter writing
◆
Verify that if there is power failure
during parameters storage.
After initializing the
parameters setting value
(Fn005), reset the function
code parameters.
3. Parameters are written
frequently.
◆
Check if the upper unit is frequently
performing parameters change operation.
It is possible that the Servo
is faulty. Replace the Servo
and change the Parameters
writing method.
4. ac power, grounding and
static noise that can cause
data storage malfunctions.
◆
After initializing the parameters setting
value and resetting the function code
parameters, it still occurs frequently.
Take measures to prevent
noise disturbance.
5. Servo unit failure
◆
Reset function parameters after
multiple initialization, the corresponding
fault still occurs.
It is possible that the servo
is faulty. Replace the servo.
Error code
ER. 021
Function code parameters formatting exception
Reason
The total number of function codes has changed and usually appears after updating the software.
Software version number update.
Drive's Power level code is not set.
Treatment.
Reasons
Confirmation method
Handling measures
1. Updated software.
◆
Check if the software is updated
Reset the model (PnE00).
2. Power level code is not
set.
◆
Check if the function code PnE00
is 0
Reset the model (PnE00).
3. Servo unit failure.
◆
After resetting the function code
parameters after multiple initialization,
the corresponding fault still occurs.
It is possible that the servo is
faulty. Replace the servo
Error code
ER. 022
Factory function code parameters and checksum exception
Reason
The unit internally checks the function code (manufacturer's parameters group) and a function
code parameters and checksum failure will occur if the checksum fails.