Mitsubishi Electric MELDAS C6 Interface Manual page 170

B con-
Signal name
tact
TEMPERATURE WARNING
—
CAUSE
[Function]
If the alarm is displayed when an overheat alarm is detected in the control unit or communication
terminal‚ the overheat signal will be output simultaneously. If the machine is in automatic operation‚
the operation will be continued‚ but restarting will not be possible after resetting or stopping with
M02/M30. (Starting will be possible after block stop or feed hold.)
The alarm will be reset and the overheat signal will turn OFF when the temperature drops below
the specified temperature.
The alarm of overheat occurs when the temperature in the control unit is above 80 ° C, and when
the ambient temperature of the communication terminal is above 70 ° C.
Communication terminal
Control unit
[Operation]
(1) If the internal temperature of control unit rises above 80 ° C (the ambient temperature of
control unit is about 60 ° C) or the ambient temperature of communication terminal rises above
70 ° C, the overheat will be detected.
(2) The overheat detection will be the thermal alarm when the parameter is set to the thermal
detection valid (default). If the machine is in automatic operation, the automatic operation will
be continued until the machine is stopped with M02/M30 or the reset. In case of the thermal
alarm in the control unit, if the automatic start signal is input in that state, the alarm will be
"T01 CAN'T CYCLE ST 0113".
When only the overheat of communication terminal occurs, the operation start is possible.
(3) The alarm message of " Z53 TEMP. OVER" is indicated because of the thermal alarm.
(4) The state that the overheat occurs is informed to the built-in PLC with the bit device.
(5) The thermal alarm is released because of the temperature dropping. The alarm message and
bit device to the built-in PLC are reset by the release.
6. EXPLANATION OF INTERFACE SIGNALS
6.2 PLC Input Signals (Data Type: R***)
Signal
abbreviation
Overheat
Detection
Parameter
(Default valid)
(70°C)
Overheat
Detection
Parameter
(Default valid)
(80°C)
6-2-10
1st system 2nd system
R41 —
Thermal
alarm
User PLC
3rd system
—
Message indication
(Z53 TEMP. OVER)
Bit device (SM16,R41)
Cooling fan rotation
Warning with lamp
Emergency stop
Others