2-channel DC motor output stage 48 V DC, 5 A KL2552
Error A, B
Warning A, B
Enable A, B
Driver, Motor
Input 1, Input 2 
Encoder B: A, B 
Encoder A: A, B 
Run LED, Encoder 
Power contact
+24 V
Power contact 0 V
Encoder A:
A, B
Encoder B: A, B
Sensor supply
Input 1, Input 2
Motor A:
A1, A2
Motor B:
B1, B2
Load voltage
50 V, 0 V
Top view 
Encoder/motor connection 
extended shock and vibration range 25g

KL2552 | 2-channel DC motor output stage 48 V DC, 5 A

The KL2552 Bus Terminal enables direct operation of two DC motors. It is galvanically isolated from the K-bus. The speed is specified by the automation device via a 16 bit value. Connection of an incremental encoder enables a simple servo axis to be realised. Typical motor parameters can be set in order to avoid critical conditions of the DC motor. The load can be protected by limiting the maximum values for speed, torque and acceleration. The output stage is protected against overload and short-circuit. The Bus Terminal contains two channels that indicate their signal state by means of light emitting diodes. The LEDs enable quick local diagnosis.

Technical data KL2552, KS2552
Technology compact drive technology
Load type DC brush motor, inductive
Number of channels 2
Number of outputs 1 x DC motor per channel
Number of inputs 1 x end position, 1 x encoder per channel
Connection technology direct motor connection
Supply voltage electronics 24 V DC (via power contacts)
Supply voltage power 8…48 V DC (external)
Max. output current 2 x 5 A (short-circuit proof, thermal-overload proof for both channels together)
Resolution max. 10 bit current, 16 bit speed
Encoder input signal 5…24 V DC, typ. 5 mA, single-ended
Pulse frequency max. 400,000 increments/s (with 4-fold evaluation)
Current consumption power contacts typ. 50 mA
Current consumption K-bus typ. 100 mA
Bit width in the process image 48 inputs/outputs: 2 x 16 bit data, 2 x 8 bit control/status
Electrical isolation 500 V (K-bus/field potential)
Weight approx. 100 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
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 20/see documentation
Pluggable wiring for all KSxxxx Bus Terminals
Approvals/markings CE, UL
Related products  
KL2532 2-channel DC motor output stage 24 V DC, 1 A, Bus Terminal, IP 20
EL7332 DC motor EtherCAT Terminal, 24 V DC, Imax = 1.0 A, 2-channel
EL7342 DC motor EtherCAT Terminal, 48 V DC, Imax = 3.5 A, 2-channel
EP7342 EtherCAT Box, industrial housing, 2-channel DC motor output stage 48 V DC, 3.5 A, IP 67