Mitsubishi MELFA RH-6SH Series Standard Specifications Manual page 111

[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.
Upside terminal block
Short piece 1
Short piece 2
(Customer-prepared wiring) (Controller side)
Bottom side terminal block
Short piece 1
Short piece 2
Internal circuit composition of
external emergency stop and door switch
Note 1) Emergency stop output opens
when either one of the emergency stop switches
shown below or an input signal turns on.
･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
Fig.3-15 ： Connection of the external emergency stop (CR2B-574 controller)
24V
1
2
RA1
3
4
RA2
5
RA3
6
RG (24G)
Emergency stop output
24V
1
2
RA11
3
4
RA21
5
RA31
6
RG (24G)
Emergency stop output
when the T/B is unconnected.
Emergency stop input
Door switch input
System emergency
stop line
(Prepared by cusotmer)
Note1)
Emergency stop input
Door switch input
System emergency
stop line
(Prepared by cusotmer)
Note1)
Example of wiring for external emergency stop and door switch
Wire fixing screw
① ②
③ ④
Wire insert
⑤ ⑥
EXTEMG connector (Same for both top and bottom outputs)
DOOR EMG.
Switch
STOP
24V
RA5
RG (24G)
EMG.
STOP
DOOR
Switch
24V
RA51
RG (24G)
(customer-prepared wiring)
Controller rear side
Maker:Phoenix Contact
Type:FRONT-MSTB2.5/6-ST-5.08
Emergency stop input/output 3-99
3Controller
1
2
3
4
5
6
1
2
3
4
5
6