Mitsubishi MELFA RH-6SH Series Standard Specifications Manual page 112

3Controller
[Caution] When wiring the emergency stop switch (duble emergency line type), wire both contacts to the two
terminal blocks on the controller. If both contacts are wired to only one of the terminal blocks, errors
cannot be cancelled using the door switch.
EXTEMG1
6
5
4
Short piece 2
3
2
Short piece 1
1
EXTEMG2
6
5
4
Short piece 2
3
2
Short piece 1
1
(Customer-prepared wiring) (Controller side)
Internal circuit composition of
external emergency stop and door switch
Warning
Note 1) Emergency stop output opens
when either one of the emergency stop switches
shown below or an input signal turns on.
Fig.3-16 ： Connection of the external emergency stop (CR3-535M controller)
[Note] Refer to Page 168, "6.1.7 Examples of safety measures"
Emergency stop input/output
3-100
RA3:Emergency stop output
24V
RA2
door switch input
External
RA1
External emergency stop input
RG (24G)
RA31:Emergency stop output
24V
RA21
door switch input
External
RA11
External emergency stop input
Do not check the voltage which withstand insulation.
And, failure will be caused if it connects incorrectly.
･Emergency stop switch of the controller.
･Emergency stop switch of the T/B (option).
･External emergency stop input.
･External door input.
･The T/B mount/dismount switch is OFF
when the T/B is unconnected.
System emergency
stop line
(Prepared
Note1)
by cusotmer)
Relay
RA
GND (24G)
System emergency
stop line
(Prepared
Note1)
by cusotmer)
Relay
RA
GND (24G)
Example of wiring for
external emergency stop and door switch
(customer-prepared wiring)
Wire fixing screw
EXTEMG connector
(Same for both left and right outputs)
together, and carry out wiring to the emergency stop.
EMG. DOOR
STOP SWITCH
24V
EXTEMG1
6
5
4
3
2
1
24V
EXTEMG2
6
5
4
3
2
1
EXTEMG1
EXTEMG2
6
Wire insert
5
4
AWG#24 to #12
3
(0.2 to 2.5mm
2
Maker:Phoenix Contact
1
Type:FRONT-MSTB2.5/6-ST-5.08
Control unit
)
2