Maxsine EP3 E Series - Page 144

Chapter 7 Alarm
136
Err 4 (Position deviation)
Potential cause Check Handle
Servomotor U 、 V 、 W
connection is not correct
Check U、V、W wiring
Correct U、V、W wiring. The U、V、
W must connect with servo driver
terminal U、V、W correspondently.
Encoder zero point changes Check the encoder zero point Adjust the zero point of encoder again.
Encoder wiring error Check the encoder wiring Correct connection
The servomotor is blocked
Check the servomotor shaft and
its mechanical connection
Repair.
Command pulse frequency is
too high
Check the input frequency and
pulse frequency doubling
parameters
Lower input frequency
Adjust the pulse frequency doubling
parameters
The position loop gain is too
small
Check parameters P009, P013 Increase the position loop gain
Torque is not enough big Check torque
 Increase the torque limit.
 Increase smooth filtering time for
position command.
 Reduce load.
 Replace the servo driver and
servomotor with bigger ones.
Err 7 (Drive inhibition abnormal)
Potential cause Check Handle
When the servo enable,
CCWL、CWL drive forbidden
input are invalid
Check CCWL、CWL wiring
 Correct input CCWL、CWL signal.
 If not use CCWL、CWL signal can
shield it by setting parameter P097.
Err 8 (Overflow of position deviation counter)
Potential cause Check Handle
The servomotor is blocked
Check the servomotor shaft and
its mechanical connection
Repair.
The command pulse is
abnormal
Check command pulse