Mitsubishi C70 User Manual

IV - 90
Appendix 7. Explanation of Alarms
Appendix 7.4 MCP Alarms (Y)
Y20 Safety OBS ERR 0012 (Contactor data)
Details
Contactor's operation is not following the NC's commands.
The contactor showing unusual move will be indicated as a bit.
bit0 : MC_dp1
bit1 : MC_dp2
(Example 1) Operation error only in MC_dp1 : 0001
(Example 2) Operation error in both MC_dp1 and MC_dp2 : 0003
Remedy
- Check if the contactor's auxiliary b contact signal is correctly output to the device set in
"#1330 MC_dp1" and "#1331 MC_dp2".
- Check the wiring for contactor shutoff.
- Check for contactor's welding.
- Turn the controller ON again.
Y20 Dual signal: compare error 0020 (Device No.)
Details
The dual signals are not matched between PLC CPU and CNC CPU.
The following factors may cause the error.
- Cable is disconnected.
- Sensor is broken.
Alarm No. shows the device No. which has the error. ("0024" indicates the device No. X24.)
When two or more signals are detected for errors, the No. shows the first detected signal.
Remedy
Check the wiring.
Y20 Dual signal: comparison ladder transfer error 0021 (Data transfer error code)
Details
The request to transfer data from CNC CPU to PLC CPU was not successfully processed.
<Data transfer error code>
4029, 41CF: The user ladder area does not have enough capacity for dual-signal
comparison ladder to be written in.
4031: Incorrect device size has been set in PC parameter.
413A: There is a possibility that the different version of dual-signal comparison sequence
(SSU_CMP) or partly changed or deleted SSU_CMP was written in the PLC CPU.
Remedy
<Data transfer error code>
4029, 41CF: Check whether the user ladder area has enough capacity. If the area does not
enough capacity, decrease the number of steps in the user ladder and then restart the NC.
4031: Make sure that no change has been made to the device allocation settings of PC
parameter.
Correct the PC parameter and then restart the NC.
Other than above: Contact the service center.
413A: Restart the NC. When SSU_CMP is stored by GX Developer, reread it from the CNC
CPU.
Y20 Dual signal: comparison ladder transfer timeout 0022 (Data request code)
Details
A timeout error occurred at the data transfer request from CNC CPU to PLC CPU.
This error may occur when a file is being accessed by other devices such as GX Developer
and GOT.
Remedy
Disconnect the access by other devices and restart the NC.

Mitsubishi C70 Specifications

General

Brand	Mitsubishi
Model	C70
Category	Control Unit
Language	English