Incremental encoder interface KL5111
Signal LED
Signal LED 
Signal LED 
Power contact
+24 V
Power contact 0 V
+24 V
0 V
Contact assembly 
extended shock and vibration range 25g

KL5111 | Incremental encoder interface

The KL5111 Bus Terminal is an interface for the direct connection of 24 V incremental encoders. A 16 bit counter with a quadrature decoder and a 16 bit latch for the zero pulse can be read, set or enabled. The state of the counter is transmitted quickly and securely to the PC, PLC or CNC over the fieldbus. Interval measurement with a resolution of 200 ns is possible. Up to 64 incremental encoders can be connected to a Bus Coupler.

Technical data KL5111 | KS5111
Technology incremental encoder interface 24 V DC, EN 61131-2, type 1, “0”: < 5 V DC, ”1”: > 15 V DC, typ. 5 mA
Number of channels 1 incremental encoder
Encoder connection A, B, C, 24 V
Encoder operating voltage 24 V DC
Encoder output current
Counter 16 bit, binary
Limit frequency 1 million increments/s (with 4-fold evaluation)
Quadrature decoder 4-fold evaluation
Zero-pulse latch 16 bit
Commands read, set, enable
Power supply 24 V DC (-15 %/+20 %)
Supply voltage 24 V DC (-15 %/+20 %)
Current consumption power contacts
Current consumption K-bus typ. 40 mA
Bit width in the process image input/output: 2 x 16 bit data, 2 x 8 bit control/status
Weight approx. 60 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/variable
Pluggable wiring for all KSxxxx Bus Terminals
Approvals CE, UL, Ex
Special terminals
KL5111-0010 A, B, C signals: 5 V inputs
KL5111-0011 special function: latch input sets counter to zero
KL5111-0012 latches on both edges, A, B, C inputs 24 V
KL5111-0013 latches on both edges, A, B, C inputs 5 V
KL5111-0015 frequency measurement over a selectable time window; 24 V inputs
KL5111-0016 frequency measurement over a selectable time window; 5 V inputs
KL5111-0020 12 V input circuit