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Headquarters Australia
Beckhoff Automation Pty. Ltd.

Building 4, 163–179 Forster Road
Mount Waverley, VIC 3149, Australia

+61 3 9912 5430
info@beckhoff.com.au
www.beckhoff.com/en-au/

KL2531 | Bus Terminal, 1-channel motion interface, stepper motor, 24 V DC, 1.5 A

KL2531 | Bus Terminal, 1-channel motion interface, stepper motor, 24 V DC, 1.5 A

KL2531 | Bus Terminal, 1-channel motion interface, stepper motor, 24 V DC, 1.5 A

Run LED
Turn CW LED
Enable LED
Error A LED
Power LED
Turn CCW LED
Stall detect
Error B LED
Power contact
+24 V
Power contact 0 V
A1
B1
E1
A2
B2
E2
Top view 
Contact assembly 
KL2531 | Bus Terminal, 1-channel motion interface, stepper motor, 24 V DC, 1.5 A

KL2531 | Bus Terminal, 1-channel motion interface, stepper motor, 24 V DC, 1.5 A

Compact Drive Technology

Compact Drive Technology

The KL2531 Bus Terminal is intended for the direct connection of different small stepper motors. The slimline PWM output stages for two motor coils are located in the Bus Terminal together with two inputs for limit switches. The KL2531 can be adjusted to the motor and the application by changing just a few parameters. 64-fold micro-stepping ensures particularly quiet and precise motor operation. In many applications, integrated zero-speed monitoring makes an encoder system or limit switch unnecessary.

Product status:

regular delivery

Product information

Technical dataKL2531
Technologycompact drive technology
Load type2-phase stepper motor (uni-/bipolar)
Number of channels1
Number of outputs1 x stepper motor
Number of inputs2 x end position
Connection technologydirect motor connection
Supply voltage electronics24 V DC (via power contacts)
Supply voltage power24 V DC (internally via power contacts)
Output currentmax. 1.5 A
Step frequencymax. 125,000 steps/s
Step patternfull step, half step, up to 64-fold micro stepping
Current controller frequencyapprox. 25 kHz
Resolutionapprox. 5000 positions in typ. applications (per revolution)
Diagnostics LEDerror phase A and B, loss of step/stagnation, power, enable
Current consumption power contactsload only
Current consumption K-bustyp. 60 mA
Bit width in the process imageinput: n x 2 x 16 bit data, 2 x 16 bit control/status
Special featurestravel distance control
Electrical isolation500 V (K-bus/signal voltage)
Weightapprox. 50 g
Operating/storage temperature0…+55 °C/-25…+85 °C
Relative humidity95 %, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/see documentation
Pluggable wiringfor all KSxxxx Bus Terminals
Approvals/markingsCE, UL
Housing dataKL-12-8pinKS-12-8pin
Design formcompact terminal housing with signal LEDsterminal housing with pluggable wiring level
Materialpolycarbonate
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (e), flexible conductor (f) and ferrule (a): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
s*: 0.08…1.5 mm²,
st*: 0.08…1.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG 28…14,
st*: AWG 28…14,
f*: AWG 26…16
s*: AWG 28…16,
st*: AWG 28…16,
f*: AWG 26…16
Stripping length8…9 mm9…10 mm
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

Ordering information
KL2531Bus Terminal, 1-channel motion interface, stepper motor, 24 V DC, 1.5 A
KS2531Bus Terminal, 1-channel motion interface, stepper motor, 24 V DC, 1.5 A, pluggable wiring

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