Mitsubishi Electric Q172CPU Programming Manual page 267

APPENDICES
Error
code
Name
• Interface unit (MR-J2M-P8B) for servo
amplifier connection fault.
2022 Base unit bus
(Note-1)
error 1
• Interface unit (MR-J2M-P8B) for servo
amplifier fault.
• Base unit (MR-J2M-BU ) for servo
amplifier fault.
• Servo amplifier connection fault.
2023 Base unit bus
(Note-1)
error 2 • Servo amplifier fault.
• Base unit (MR-J2M-BU ) for servo
amplifier fault.
• U, V, or W of the servo amplifier
output grounded.
Output ground
2024
fault
• Servo amplifier connection fault.
2024 Servo amplifier
(Note-1)
mounting error • Base unit (MR-J2M-BU ) for servo
amplifier fault.
• Faulty parts in servo amplifier.
• The voltage of the supercapacitor
inside the absolute position encoder
has dropped.
Battery error
2025 (Absolute
• The battery voltage is low.
position erase)
• Battery cable or battery fault.
(Home position return must be re-
executed after release of the error.)
Table 2.3 Servo error (2000 to 2799) list (Continued)
Error cause
Description
Error check
processing
Any time during Immediate
operation
Immediate
• Servo amplifier
power on.
• Multiple CPU
system power on.
APP - 22
Error
Corrective action
• Connect the interface unit (MR-
J2M-P8B) for servo amplifier to
the base unit (MR-J2M-BU ) for
servo amplifier correctly.
• Replace the interface unit (MR-
J2M-P8B) for servo amplifier.
• Replace the base unit (MR-J2M-
BU ) for servo amplifier.
• Connect the servo amplifier to
the base unit (MR-J2M-BU ) for
servo amplifier correctly.
• Replace the servo amplifier.
• Replace the base unit (MR-J2M-
stop
BU ) for servo amplifier.
• Check whether the servomotor
has short-circuited.
• Correct the U, V, W wiring of the
servo amplifier.
• Replace the servomotor.
• Connect the servo amplifier to
the base unit (MR-J2M-BU ) for
servo amplifier correctly.
• Replace the servo amplifier.
• Replace the servo amplifier.
• Turn the power on for 2 to 3
minutes to charge the
supercapacitor, switch the power
stop
off to on again, and set the
home position return.
Home
position
• Turn the servo amplifier power
return
off, then measure the battery
request
voltage.
ON
• Replace the battery of the servo
(Note-1)
amplifier.
(Note-1): MR-J2M-B only