Panasonic MINAS E-series - Manual (Page 148)

148
Troubleshooting
Protective
Functions
*Encoder Z-
phase error
protection
*Encoder
CS signal
error
protection
*Motor auto
recognition
error
protection
*LSI setup
error
protection
*Other
trouble and
error
Alarm
code No.
48
49
95
96
Nos.
other
than the
above
Cause
Missing phase Z pulse of 2500 [P/r] 5-serial
encoder is detected.
The encoder is defective.
The abnormal logic of CS signal of 2500 [P/r] 5-
serial encoder is detected.
The encoder is defective.
(1) The motor is not compatible with the servo
driver.
(2) The encoder is not connected at power-on.
Before power-on, if (1) the encoder wire is
disconnected, or (2) data from the encoder results
in communication error, be careful as the motor
automatic recognition abnormality protection
(alarm code No.95) will be activated when you
power on again.
In case of (1) and (2) above, take action for alarm
codes No.21 and No.23.
Setting of LSI does not complete successfully due
to excessive noise.
The self-diagnostic function of the driver is
activated and some abnormality occurs in the
driver.
The control circuits malfunction due to excessive
noise.
Action
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).
1) Change the motor to a new motor compatible
with the servo driver.
2) Check connection of the encoder.
Take countermeasure against noise.
Power off and on again. If the display still
appears and the error is repeated, the motor and
driver may have failed. Shut down the power and
replace them. Then, return them to the sales
agent for inspection (repair).
Alarm Code LED
Red
Orange
Red
Orange
Alarm content
Other trouble/error
STATUS LED
Red
Red
Orange
Orange
•
Load factor and regenerative resistor load factor can be checked in the monitor mode of PANATERM
®
or console.
• Power voltage shortage protection (Alarm Code No. 11), EEPROM parameter error protection (Alarm code
No. 36), EEPROM check code error protection (Alarm code No. 37), Overtravel inhibit input protection
(Alarm code No. 38), Motor auto recognition error protection (Alarm code No.95) and LSI setup error
protection (Alarm code No.96) are not memorized in “Alarm History”.
• If other trouble/error occurs, STATUS LED and Alarm LED (ALM Code) could eventually turn ON simulta-
neously in 4 different modes given below, instead of blinking (flashing) as staged in the above Table.
Software limit function
(1) Outline
If the motor operation exceeds the motor operational range set in Pr26 (Software limit protection) for the position
command range, then the alarm can be stopped with the software limit protection (error code No. 34).
Using this function prevents the load from colliding with the edges of the machine due to the oscillation of the motor.
(2) Scope
This function can operate under the following conditions:
Control mode
Conditions under which the software limit functions
Position control mode Pr02 = 0: High-speed response position control Pr02 = 2: Highly-functional position control
(1) Servo must be turned ON.
(2) Pr26 (Software limit setting) must be set to a value other than “0”.
(3) The motor’s operational range must be within 2147483647 for both CCW and CW since the position command parameter range
was reset to “0”.
Once the condition in (3) has been breached, then the software limit protection will be disabled until the condition for which the (5)
Position command parameter range is cleared is met.
If condition (1) or (2) is not met, then the position command parameter range will be cleared to “0”.