2-channel DC motor output stage 50 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

KL2552 | 2-channel DC motor output stage 50 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
Connection technology direct motor connection
Number of outputs 2 DC motors, encoder input
Rated load voltage 8…50 V DC
Load type DC brush motors, inductive
Max. output current 2 x 5 A (short-circuit-proof, thermal overload-proof for both channels together)
PWM clock frequency 30 kHz with 180° phase shift each
Duty factor 0…100 % (voltage-controlled)
Resolution max. 10 bits current, 16 bits speed
Reverse voltage protection
Electrical isolation 500 V (K-bus/field potential)
Current consumption power contacts typ. 50 mA
Current consumption K-bus typ. 100 mA
Encoder input signal 5…24 V DC, 5 mA, single-ended
Pulse frequency max. 400,000 increments/s (with 4-fold evaluation)
Bit width in the process image 48 inputs/outputs: 2 x 16 bit data, 2 x 8 bit control/status
Configuration adaptation and optimisation of the respective motor via the controller and registers or KS2000 configuration software
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 CE, UL
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