Wecon VD2 SA Series Servo Drives User Manual (Full V1.0)
142
WECON technology Co., Ltd
Chapter 10 Malfunctions
10.1 Handling of faults and warnings at startup
10.1.1 Position control mode
Boot process
Fault phenomenon
Reason
Confirmation method
Turn on the main
power
The digital tube does
not light up or the bus
voltage indicator does
not light up
Servo drive faults
Contact agent or company customer service
Panel display Er.xx
Refer to [
10.2 Handling of faults and warnings during operation
]
After removing the fault, the servo drive panel should display "rdy"
Servo drive
enable signal is
set to be valid
(S-ON is ON)
The servo motor is in a
free state
Servo enable signal
is invalid
Check whether the servo enable signal is
set, and the terminal logic is valid. Refer to
[
If the P6 group parameters have set the
servo enable signal, and the corresponding
terminal logic is valid, but the panel still
displays "rdy", check whether the DI
terminal wiring is correct, please refer to
[
]
Control mode error
Check whether the parameter P00-01 is set
correctly
Panel display Er.xx
Refer to [
10.2 Handling of faults and warnings during operation
]
After troubleshooting, the servo drive panel should display "run"
Input position
instruction
The motor does not
rotate
U0-09 (input
instruction pulse
number) always
displays 0
Not input position instruction
Whether DI_3 is set to prohibit forward
drive or whether DI_4 is set to prohibit
reverse drive;
Whether to use DI instruction pulse input
prohibition function.
After troubleshooting, the servo motor should be able to rotate normally
The motor does
not rotate
smoothly at low
speed
Unstable low speed
Unreasonable gain
setting
Refer to [
] to adjust
the gain.
The motor shaft
vibrates left and right
Load inertia ratio
(P03-02) is too large
Refer to "Chapter 7 Adjustment" for inertia
recognition. After the inertia recognition is
completed, [
]
performs gain adjustment.
After troubleshooting, the servo motor should be able to rotate normally
Normal
operation
Inaccurate positioning
There is a positional
deviation
The pulse received by U0-09 is inconsistent
with the actual one sent by the host
computer;
Whether the device is vibrating, adjust it
through the gain;
Whether the coupling at the motor shaft is
locked.