Panasonic Minas E Series Instruction Manual page 147

Alarm
Protective
code No.
Functions
23
*Encoder
Data from the encoder results in communication
communi-
error, which is mainly caused by noise. Although
cation data
the encoder cable is connected correctly, data
error results in communication error.
protection <Caution>
If the above condition occurs before power-on, be
careful as the motor automatic recognition
abnormality protection (alarm code No.95) will be
activated when you power on again.
24
Position The position deviation pulse exceeds the position
over- over-deviation set-up, Pr63.
deviation (1) The motor operation does not respond to a
protection
command.
(2) The position over-deviation set-up Pr63 is low.
26
Over- (1) The rotation speed of the motor exceeds a
velocity specified value.
protection
(OS)
(2) Torque limit switching input selection Pr06 is
set to 2, and 1st and 2nd over-speed level set-
up Pr70, Pr73 are set to 0.
27
Command The dividing/multiplier ratio set with the numerator
pulse of 1st and 2nd command ratio Pr46 and Pr47 is
multiplier not appropriate.
error
protection
Deviation 29 A value of the deviation counter exceeds 2
counter (134217728).
overflow
protection
Software 34
The motor operation exceeds the motor
limit
operational range set in Pr26 (Software limit
protection setting) for the position command range.
(1) The gain is not appropriate.
(2) The value set in Pr26 is too small.
*EEPROM 36 Data in the parameter storage area is corrupt
when it is read from EEPROM upon power-on.
parameter
error
protection
*EEPROM 37 EEPROM write check data is corrupt when it is
check code read from EEPROM upon power-on.
error
protection
Overtravel 38 Both CW and CCW overtravel inhibit input turn off.
inhibit input
protection
44
*ABS 1- The encoder detected abnormality of a single-turn
rotation counter.
counter The encoder is defective.
error
protection
*ABS multi- 45 The encoder detected abnormality of a multi-turn
rotation counter.
counter The encoder is defective.
error
protection
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Cause
27
147
[Trouble Case]
Action
Ensure that the supply voltage of the encoder is
DC5V±5% (4.75 to 5.25V). Be careful, in
particular, when the encoder cable is long. If it is
bundled with the motor wire, separate them.
Connect the shield to FG --- See the encoder
wiring diagram.
(1) Check that the motor rotates in accordance
with the position command pulse. Using the
torque monitor, ensure that output torque is
not saturated. Adjust gains. Maximize torque
limit set-up Pr5E. Correct encoder wires as
per the wiring diagram. Extend acceleration/
deceleration time. Alleviate load and slow
down speed.
(2) Increase Pr63.
(1) Decrease the speed to prevent over-speed
command from being issued. Set dividing/
multiplier ratio so that input frequency of a
command pulse is 500 kpps or less. In the
event of overshoot due to poorly adjusted
gains, readjust them. Connect encoder wires
as per wiring diagram.
(2) If you select torque limit switching input, set
Pr70 and Pr73 to a value within the use range
speed of the motor.
Using Pr46 and Pr47, reduce the multiplier ratio.
Set the dividing/multiplier ratio so that the
command pulse frequency will not exceed the
maximum input pulse of 500 kpps or less.
Check that the motor rotates in accordance with
the position command pulse. Using the torque
monitor, ensure that output torque is not
saturated. Adjust gains. Maximize torque limit
set-up Pr5E. Correct encoder wires as per the
wiring diagram. Extend acceleration/deceleration
time. Alleviate load.
(1) Check the gain (the balance between the
position loop gain and the speed loop gain)
and the inertia ratio.
(2) Increase the set value in Pr26.
Set Pr26 to "0" in order to disable the
protection function.
Reset all the parameters.
If the error persists, the driver may have failed.
Replace it. Then, return it to the sales agent for
inspection (repair).
The driver may have failed. Replace it. Then,
return it to the sales agent for inspection (repair).
Check if limit switches, electric wires, and power
supply for CW/CCW overtravel inhibit input are
normal. Especially, check whether the power
supply for control signal (DC12 to 24V) rises
without delay. Check setting of Pr04 and correct
wiring.
The motor may have failed. Replace it. Then,
return it to the sales agent for inspection (repair).
The motor may have failed. Replace it. Then,
return it to the sales agent for inspection (repair).