5 Troubleshooting
5
- 39 -
5.1.3 Torque Control
During Startup
Fault Symptom
Cause
Confirming Methods
Connect control
power L1C/L2C
and main power
L1/L2 and R/S/T.
The LED display is
not on or does not
display Rdy.
1. The control power
voltage is abnormal.
After disconnecting CN1, CN2, CN3 and CN4, the
fault persists.
Measure AC voltage between L1C and L2C.
2. The main power
voltage is abnormal.
For single-phase 220 V mode, measure AC
voltage between L1 and L2. When DC bus voltage
amplitude (voltage between
P
and
-
) is lower
than 200 V, "nrd" is displayed.
For three-phase 220/380 V model, measure AC
voltage between R, S and T. When DC bus voltage
amplitude (voltage between
P
and
-
) is lower
than 460V, "nrd" is displayed.
3. The program
burning terminal is
shorted.
Check whether the program burning terminal is
shorted.
4. The servo drive is
faulty.
-
The operation
panel displays "Er.
xxx".
Remove the fault.
After the preceding causes are removed, the operation panel should display "rdy".
Set the S-ON to
ON.
The operation
panel displays "Er.
xxx".
Remove the fault.
Shaft of the servo
motor is in free
running status.
1. The S-ON signal
is invalid.
Set operation panel to servo status display and
view whether the operation panel displays "rdy"
rather than "run".
Check whether any parameter in groups H03 and
H17 is set for FunIN1(S-ON). If yes, check that the
corresponding DI is set to ON. If not, allocate the
function and set the corresponding DI to ON. See
group H03 in Chapter 7 for details on setting of
input terminal parameters.
If a parameter in group H03 has been set for
FunIN1(S-ON) and logic of corresponding DI is
logic, but the operation panel still displays "rdy".
In this case, check whether the DI terminal is
connected correctly by referring to Chapter 3 in the
IS650P User Manual.
After the preceding causes are removed, the operation panel should display "run".
Summary of Contents for IS650P Series
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