Operating Instructions
Transponder-Coded Safety Switch CTM-I2-BP/BR
18
(translation of the original operating instructions) MAN20001437-01-10/21
11. Connection of several devices in a switch chain (series connection)
WARNING
In the event of a fault, loss of the safety function due to incorrect connection.
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To ensure safety, both safety outputs FO1A and FO1B must always be evaluated.
Important!
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A BR switch chain may contain a maximum of 20 safety switches.
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The example shows only an excerpt that is relevant for connection of the CTM system. The exam-
ple illustrated here does not show complete system planning. The user is responsible for safe inte-
gration into the overall system. Detailed application examples can be found at www.euchner.com.
Simply enter the order number of your switch in the search box. You will find all available connec-
tion examples for the device in
Downloads
.
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Make sure you use the correct Y-distributors. See chapter
11.2.3. Connector assignment of Y-dis-
tributor for series connection without IO-Link communication on page 20 and chapter
Connector assignment of Y-distributor for series connection with IO-Link communication on page
22.
11.1. Series connection with wiring in the control cabinet
The series connection can be realized via additional terminals in a control cabinet.
The safety outputs are permanently assigned to the respective safety inputs of the downstream switch. FO1A must be routed
to FI1A and FO1B to FI1B. If the connections are interchanged (e.g. FO1A to FI1B), the device will switch to the fault state.
11.2. Series connection with Y-distributor
The series connection is shown here based on the example of the version with plug connector M12. The switches are con-
nected one behind the other with the aid of pre-assembled connecting cables and Y-distributors. If a safety door is opened
or if a fault occurs on one of the switches, the system shuts down the machine.