Analog combi
EP4378-1022 | 4+4-channel analog input/output, U/I parameterisable, + 8-channel digital input/output, 24 V DC/3.0 ms
M12 I/O
connection sockets 
Signal status display 
Labelling areas 
Power supply
status display:
Box supply (US
Auxiliary voltage (UP
Power supply feed 
Power supply down- 
stream connection
1 | Tx+
2 | Rx+
3 | Rx-
4 | Tx-
1 | + 24 V DC Us
2 | + 24 V DC UP
3 | GNDs
4 | GNDP
signal input 
signal output 
1 | 24 V DC UP
2 | n. c.
3 | GNDP
4 | DIO
5 | Shield
1 | 24 V DC UP
2 | Input +
3 | GNDP
4 | DIO
5 | Output +
extended temperature range

EP4378-1022 | 4+4-channel analog input/output, U/I parameterisable, + 8-channel digital input/output, 24 V DC/3.0 ms

The EP4378-1022 EtherCAT Box provides a combination of four analog inputs and four analog outputs as well as eight digital inputs/outputs. The analog channels can be individually parameterised so that they process/generate signals either in the ±10 V or the 0/4 to 20 mA range. The resolution of the input signals is 16 bit depending on the sign. The voltage or output current is supplied to the process level with a resolution of 15 bit (default), electrically isolated. The digital channels can be used for reading binary sensors or controlling actuators according to the EN 61131-2, type 1/3 specifications. The inputs have a filter constant of 3 ms. The outputs process load currents up to 0.5 A and are both short-circuit proof and reverse-polarity protected. All output channels have a common ground potential. At the upper four M12 connections each, the following is available: an analog input, an analog output and a digital input/output, which is freely assignable without prior configuration, so that complex end devices such as frequency converters, hydraulic power units, motor drives or similar can be supplied using just one connection cable. At the lower four M12 connections a digital input/output is available each, freely assignable without configuration.

Technical data EP4378-1022
Number of outputs 4 x analog, 8 x digital
Number of inputs 4 x analog, 8 x digital
Input/output connections M12, screw type
Protocol EtherCAT
Bus interface 2 x M8 socket, shielded, screw type
Signal type -10/0…+10 V | 0/4…20 mA
Load output: > 5 kΩ | 350 Ω
Internal resistance input: > 200 kΩ | typ. 85 Ω + diode voltage
Resolution 16 bit
Conversion time input: ~ 100 µs, output: ~ 40 µs
Measuring error input: < 0.3 %, output: < 0.1 % (each relative to full scale value)
Actuator supply from the auxiliary voltage UP
Power supply connection feed: 1 x M8 male socket, 4-pin; downstream connection: 1 x M8 female socket, 4-pin
Electrical isolation 500 V
Current consumption from US 120 mA
Special features combi module, current or voltage parameterisable per channel
Weight approx. 165 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 65/66/67 (conforms to EN 60529)/variable
Approvals/markings CE, UL
ZK1090-3xxx-xxxx Cables for EtherCAT signal in- and -output
ZK2000-5xxx/71xx-xxxx Sensor cable 5-wire unshielded/shielded
ZK2020-3xxx-xxxx Cables for M8 power supply
Product announcement
estimated market release 1st quarter 2020