Leadshine EL8-EC Series User Manual page 318

code
19
Cause
Driver UVW terminal output
single phasing or wiring error
Motor rotor blocked
Driver stiffness too low
Full closed loop position
deviation (Deviation
between external encoder
feedback position and
motor feedback position)
exceeds Pr0.33
Main Sub
Error
code
1A 0
Cause Diagnosis
1. Verify if velocity command is too high;
2. Verify if simulated velocity command voltage
Motor velocity
is too high;
exceeded first
3. Verify if parameter value of Pr3.21 is too low;
speed limit
4. Verify if input frequency and division
(Pr3.21)
frequency coefficient of pulse train is proper;
5. Verify if encoder is wired correctly
Main Sub
Error
code
1A 1
Cause Diagnosis
Motor velocity Verify encoder phase sequence; Verify if UVW
out of control, cable is connected to the right terminal
Excessive
velocity error
Main Sub
Error
code
1b 0
Cause
Controller
synchronization
dithering
Main Sub
Error
code
1b 1
Cause
Values out of range
Content: Excessive hybrid position deviation
1
Diagnosis
Verify if UVW terminal wiring
connection is right
Look for mechanical
blockages
Verify if position loop and
velocity loop gain is too low
Verify if Pr0.33 is set too low
Display: "Er 1A0"
Content: Overspeed
Display: "Er 1A1"
Content: Velocity out of control
Display: "Er 1b0"
Content: Bus input signal dithering
Diagnosis
/
Display: "Er 1b1"
Content: Incorrect electronic gear ratio
Diagnosis
Numerator or denominator
is zero/Set values out of
range
User manual of EL8-EC***F AC Servo
Solution
Make sure UVW terminals are
correctly connected to UVW of motor;
change motor power cable.
Check the machinery
Increase position loop and velocity
loop gain
Increase Pr0.33 set value accordingly
but please aware that doing so might
cause the position deviation to be
higher.
Solution
1. Adjust velocity input
command; 2. Increase Pr3.21
value;
3. Adjust pulse train input
frequency and division
frequency coefficient;
4. Verify encoder wiring;
Solution
Reconnect UVW if wrongly
connected. If still remains
unsolved, please contact
technical support.
Solution
Increase alarm threshold value
Solution
Reduce number of pulses per revolution
318