KL2531 - Technical Data

Technical data

KL2531-0000, KS2531-0000

Number of digital outputs

1, for a stepper motor (2 phases)

Power supply for output stage (via power contacts)

8 VDC to 24 VDC

Output current

max. 1.5 A (overload- and short-circuit-proof)

Current controller frequency

approx. 25 kHz

Maximum step frequency

125 kHz

Step pattern

Full step, half step, 4 / 8 / 16 / 32 / 64-fold microstepping


max. 64 steps, microstepping

Resolution per revolution

approx. 5000 positions in typical applications

Diagnostics LED for

Error segment A, error segment B, step loss/standstill, power, enable, direction of rotation, digital inputs

Number of digital inputs


Rated voltage

24 VDC (-15%/+20%)

Signal voltage "0"

-3 V ... 5 V

Signal voltage "1"

15 V ... 30 V

Input filter

0.2 ms

Input current

typically 5 mA

Electrical isolation

500 V (K-Bus/signal voltage)

Power supply for the electronics

via the K-bus

Current consumption from K-bus

typically 60 mA

Bit width in the input process image

1 x 8 bit status, 2 x 16 bit data

Bit width in the output process image

1 x 8 bit control, 2 x 16 bit data

Pluggable wiring

for all KSxxxx Bus Terminals

Dimensions (W x H x D)

approx. 15 mm x 100 mm x 70 mm (width aligned: 12 mm)


approx. 55 g

Permissible ambient temperature range during operation

0 °C ... + 55°C

Permissible ambient temperature range during storage

-25 °C ... + 85°C

Permissible relative air humidity

95%, no condensation


on 35 mm mounting rail conforming to EN 60715

Vibration / shock resistance

conforms to EN 60068-2-6/EN 60068-2-2-7,
see also Installation instructions for enhanced mechanical load capacity

EMC immunity/emission

according to EN 61000-6-2 / EN 61000-6-4 / EN 61800-6-3*
*) standard: category C3. Additional filters are required for categories C1 and C2!

Protection class


Permissible installation position

without fan cartridge ZB8610: standard installing position
with fan cartridge ZB8610: standard installing position, other installing positions (example 1 & 2), see notice

Marking / Approval


*) Real applicable approvals/markings see type plate on the side (product marking).