NSD ABSOCODER NPG-220HZCLC Specifications & Instruction Manual page 40

11. TROUBLESHOOTING
The causes and corrective actions for errors that may occur during converter operation are described below.
11-1. Display and Countermeasure when an Error Occurred
Converter has LED for the error monitor. Error contents are checked by LED light.
Refer to the following list and implement appropriate countermeasures.
● Lists of the error monitors, probable causes, and error cancel procedures
Error contents Name
SENSOR1 Axis-1 pulse
"PE" LED is ON output error
SENSOR2 Axis-2 pulse
"PE" LED is ON output error
SENSOR1
Axis-1 sensor
"ALM" and "SE"
disconnected
LED IS ON
error
SENSOR2 Axis-2 sensor
"ALM" and "SE" disconnected
LED IS ON error
SENSOR1
SENSOR2 Low power
"ALM" and "PF" error
LED is ON
SENSOR1
SENSOR2
Internal power
"ALM" LED is
supply error
ON, "PF" LED is
blinking
SENSOR1
Axis-1 limit
"ALM" and "LE"
error
LED is ON
SENSOR2
Axis-2 limit
"ALM" and "LE"
error
LED is ON
SENSOR1
Alarm when
SENSOR2
turning ON the
"ALM" LED is
power supply
ON
All LED is OFF,
－
all output is OFF
－
Probable cause
The sensor travel exceeds
the pulse output permissible
speed.
Sensor connector is
disconnected or loose.
Sensor cable is severed.
ABSOCODER sensor failure
Converter failure
Voltage drop of 24VDC
power supply
Instantaneous power failure
of 24VDC power supply
The power supply inside of
the converter is broken down.
LED turns ON when the limit
error input is ON.
Turns ON the power supply
when "Alarm setting while
turning ON the power supply"
of the function selector switch
is set to "ON: Alarm output".
24VDC power supply is not
input.
Converter failure
34
Error cancel procedures
After removing an error cause, clear the error by either way:
- Press the error clear button of the corresponding axis.
- Turn on the error clear signal of the corresponding axis.
- Turn the converter power OFF and then ON again.
After removing an error cause, clear the error by either way:
- Press the error clear button of the corresponding axis.
- Turn ON the error clear signal of the corresponding axis.
- Turn the converter power OFF and then ON again.
Replace the sensor cable.
Replace the ABSOCODER sensor.
Replace the converter.
After removing an error cause, clear the error by either way:
- Press the error clear button of the corresponding axis.
- Turn ON the error clear signal of the corresponding axis.
- Turn the converter power OFF and then ON again.
Replace the converter.
Clear the error by one of the following ways after removing the
cause why the limit error input was ON.
- Press the error clear button of the corresponding axis.
- Turn ON the error clear signal of the corresponding axis.
- Turn the converter power OFF and then ON again.
Clear the error by one of the following ways.
- Press the error clear button of the corresponding axis.
- Turn ON the error clear signal of the corresponding axis.
- Restart the converter's power supply after "Alarm setting
when turning ON the power supply" of the function selector
switch is set to "OFF: Alarm clear".
Input 24VDC power supply.
Replace the converter.