Mitsubishi Electric MELSEC Q Series User Manual page 65

5
SETTINGS AND PROCEDURES BEFORE
OPERATION
(6) Safety devices to be connected
(7) Connecting safety devices
Safety switch
5
- 23 5.4 Wiring
5.4.1 Precautions for safety devices and wiring
Connect safety devices that meet the conditions as shown below.
(a) Push button switch for emergency stop
The switch that has the direct opening action (positive opening mechanism) and
complies with EN60947-5-1 or IEC60947-5-1.
(b) Door interlock switch
The switch that has the direct opening action (positive opening mechanism) and
complies with EN60947-5-1 or IEC60947-5-1.
(c) Light curtain/beam sensor switch
The switch that has reliable performance so that it can satisfy the required control
category.
The input P type of the safety relay module does not have the channel-to-channel
short-circuit diagnostics function for light curtain. Therefore, when using a light
curtain and making it complied with Category 4, it must be Type 4 of IEC/
EN61496-1.
The same safety device cannot be input to multiple modules.
Also, start-up input cannot be input to multiple input modules.
Safety relay module
COM
X0
X0
COM
X1
X1
Safety relay module
COM
X0
X0
COM
X1
X1
Figure 5.12 Connecting safety devices
Control
24V IN
output 1
24VDC
Control
0V IN
output 2
Safety light curtain
Safety relay module
COM
X0
X0
COM
X1
X1
Safety relay module
COM
X0
X0
COM
X1
X1