
Operating Instructions
Transponder-Coded Safety Switch CTP/CTA-L1/2-BR
28
(translation of the original operating instructions) 2537376-01-04/21
10.13. Connection of several devices in a switch chain (series connection)
Important!
Ì
A BR switch chain may contain a maximum of 20 safety switches.
Ì
The example shows only an excerpt that is relevant for connection of the CTP/CTA system.
The example illustrated here does not show complete system planning. The user is responsi-
ble for safe integration 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 connection examples for the device in
Downloads
.
Ì
Make sure you use the correct Y-distributors. See chapter
10.10. Connector assignment, Y-distrib-
utor for series connection without IO-Link communication on page 25
The series connection is shown (see
to
) based on the example of the version with plug connector M12.
The switches are connected 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.
The series connection can also 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.
10.13.1. Series connection without IO-Link communication
With this connection method, only the safety signals are passed from device to device.
10.13.2. Series connection with IO-Link communication
If, in addition to the safety function, detailed monitoring and diagnostic data are to be processed, a BR/IO-Link Gateway and
the corresponding Y-distributors are required (see chapter
10.11. Connector assignment, Y-distributor for series connection
with IO-Link communication on page 26).
To poll the communication data from the devices connected, the communication connection C on each device is routed via
the Y-distributor to the BR/IO-Link Gateway.
You will find further information in the operating instructions for your BR/IO-Link Gateway.