KL2541 - Technical data

Technical data

KL2541-0000, KS2541-0000


Number of digital outputs

1, for a stepper motor (2 phases)

Power supply for output stage (via terminal points 4' and 8')

8 VDC to 48 VDC

Output current

max. 5 A (overload- and short-circuit-proof)

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

Current controller frequency

approx. 25 kHz

Number of encoder inputs

4, for an encoder system

Encoder voltage "0"

-3 V ... 2 V

Encoder voltage "1"

2,5 V ... 30 V

Encoder supply

24 VDC


Pulse frequency

max. 400,000 increments/s (4-fold evaluation)

Number of digital inputs

2, for end position

Rated voltage

24 VDC (-15%/+20%)

Signal voltage "0"

-3 V ... 2 V

Signal voltage "1"

2.5 V ... 30 V

Input filter

0.2 ms

Input current

typically 5 mA

Diagnostics LED for

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

Electrical isolation

500 V (K-Bus/signal voltage)

Power supply for the electronics

via the K-bus and through the power contacts

Current consumption from K-bus (5 V)

typically 100 mA

Current consumption from the power contacts

typically 35 mA

Power loss

typically 4 W

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. 27 mm x 100 mm x 70 mm (width aligned: 24 mm)


approx. 100  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

conforms 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 and 2), see notice

Marking / Approval


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