Electro-Mechanical Safety Switches With And Without Interlock - Mitsubishi MELSEC-WS0-CPU0 User Manual

Chapter 4
Note
Table 21:
Connection of electro-
mechanical safety switches
Table 22:
Connection of interlocks
Table 23:
Functions of electro-
mechanical safety switches
and interlocks
Note
49
Connecting devices
4.1.2

Electro-mechanical safety switches with and without interlock

The contact symbols in this chapter show the switching status while the door is closed.
Electrical connection: Example from Setting and Monitoring Tool with WS0-XTIO
Single-channel,
connected to 24 V
Single-channel,
connected to test
output
Dual-channel,
connected to 24 V
Dual-channel,
connected to test
output
Electrical connection: Example from Setting and Monitoring Tool with WS0-XTIO
Single-channel,
connected to 24 V
Single-channel,
connected to test
output
Dual-channel,
connected to 24 V
Dual-channel,
connected to test
output
Function
Testing
Series connection/ cascading
Discrepancy times
Further information is available in the manuals of the electro-mechanical safety
switches or in the manuals for devices used.
Contact between 24 V and I1
Contact between X2 and I2
Channel 1: Contact between 24 V and I3
Channel 2: Contact between 24 V and I4
Channel 1: Contact between X1 and I5
Channel 2: Contact between X2 and I6
Contact between 24 V and I1
Coil at Q1
Contact between X1 and I1
Coil at Q1
Channel 1: Contact between 24 V and I1
Channel 2: Contact between 24 V and I2
Coil at Q1
Channel 1: Contact between X1 and I1
Channel 2: Contact between X2 and I2
Coil at Q1
Notes
Possible
If safety switches are connected in series, the max. line
resistance shall not exceed 100 Ω (see Chapter 12).
See Setting and Monitoring Tool.