Connection

Fieldbus/ supply voltage

Connection supply voltage

Connection fieldbus

Conn. point	Designation	Comment
X10	24 V IN	1: Control voltage Us +24 V_DC 2: Auxiliary voltage Up +24 V_DC 3: GNDs 4: GNDp	Recommended Power cables
X20	24 V OUT		Recommended Power cables
X30	ECAT IN	1: Tx + (Transmit Data +) 2: Tx - (Transmit Data -) 3: Rx + (Receive Data +) 4: Rx - (Receive Data -)	Recommended EtherCAT cables e.g.. ZK1090-6161-xxxx or ZK1090-6191-xxxx
X40	ECAT OUT
-	PE	Screw connection - protective earth

Pin assignment for the 24-pin connection strip (FM3312-B110-0010)

Connection strip FM3312-B110-0010

PIn	Meaning
1 ...12	TC1+ ... TC12+
13 ... 24	TC1- ... TC12-

Pin assignment for the 64-pin connection strip (FM3332-B110-1010)

Connection strip FM3332-B110-1010

Pin	Meaning
1 ... 16 (A..)	TC1+ ... TC16+
1 ... 16 (B..)	TC1- ... TC16-
1 ... 16 (C..)	TC17+ ... TC32+
1 ... 16 (D..)	TC17- ... TC32-

PE connection of earthed/floating thermocouples

The PE connection is responsible for the potential equalization of grounded and non-grounded thermocouples, and for thermocouples grounded at different potentials (see thermocouple measurement). The back voltage protection diverts mains voltages via the PE connection. This means that it is essential for proper earthing of the module to be guaranteed. When the module is being fitted, the PE connection should be established first. Connection of the module to the thermocouples via the connecting strip should be performed subsequently. In this way the risk of back voltage being present at the thermocouple inputs during assembly is avoided.

WARNING
Risk of injury due to electric shock! If the earthing is inadequate the user is exposed to hazardous voltages on the housing! When the module is being dismantled, the module should, for this reason, first be disconnected from the thermocouples before the PE connection is removed.