Mitsubishi Electric M700VS Series Setup Manual page 572

Z53 CNC overheat
Details
The controller or operation board temperature has risen above the designated value.
(Note)Temperature warning
When an overheat alarm is detected, the alarm is displayed and the overheat signal is output
simultaneously. Automatic operation will be continued, while restarting after resetting or
stopping with M02/M30 is not possible. (Restarting after block stop or feed hold is possible.)
The alarm will be cleared and the overheat signal will turn OFF when the temperature drops
below the specified temperature.
Z53 CNC overheat 000x
[000x]
(For all models)
0001: The temperature in the control unit is high.
(For M700VS only)
0004: The temperature in the control unit is high.
0005: The temperature in the control unit 2 is high.
The ambient temperature must be lowered immediately when a "Z53 CNC overheat" alarm
occurs. However, if the machining needs to be continued, set "#6449/bit7 Control unit
temperature alarm ON" to "0". Then the alarm will be invalidated.
Remedy
- Cooling measures are required.
- Turn OFF the controller power, or lower the temperature with a cooler, etc.
Z55 RIO communication stop
Details
An error occurs in the communication between the control unit and remote I/O unit.
Disconnection of a cable
Fault in remote I/O unit
Fault of power supply to remote I/O unit
The alarm and the I/O unit No. is displayed when an error occurs in the communication between the
control unit and remote I/O unit.
The remote I/O unit No. is displayed in eight digits. Two digits (in hexadecimal) are used for each
board and part system.
[Display format of remote I/O unit No. ]
Z55 RIO communication stop __ __ __ __ __ __ __ __
(a)(b): Remote I/O 2nd part system communication interrupted station
(c)(d): Remote I/O 1st part system communication interrupted station
(e)(f): Remote I/O 3rd part system communication interrupted station
(g)(h): Board connection remote I/O communication interrupted station
(a)(b) indicates the following station in hexadecimal.
bit0: RIO (0th station)
bit1: RIO (first station)
bit2: RIO (second station)
bit3: RIO (third station)
bit4: RIO (fourth station)
bit5: RIO (fifth station)
bit6: RIO (sixth station)
bit7: RIO (seventh station)
This also applies for the remote I/O 1st part system communication interrupted station, remote I/O 3rd
part system communication interrupted station and board connection remote I/O communication
interrupted station.
Remedy
- Check and replace the cables.
- Replace the remote I/O unit.
- Check the power supply (existence of supply and voltage).
(a) (b) (c) (d)(e) (f) (g) (h)
M700VS Series Setup Manual
Appendix 2.5 System Alarms (Z)
555