Beckhoff Bus Terminal - KM2642 | 2-channel relay module 230 V AC, 6 A, manual/automatic operation
2-channel relay module 230 V AC, 6 A, manual/automatic operation KM2642
Top view
Signal LED 1
Signal LED 2
Manual/automatic
operation (Output 1)
Manual/automatic
operation (Output 2)
Output 1
Output 2

KM2642 | 2-channel relay module 230 V AC, 6 A, manual/automatic operation

The digital KM2642 output terminal has two independent relay change-over contacts, which can be used for switching mains current consumers. For each channel a switch enables selection between automatic, manual on, manual off. In automatic mode the logical state of an output bit switches the relay. For manual mode a 24 V supply is required for the Bus Coupler. The output state can be read by the controller.

Technical data KM2642
Number of outputs 2 x change-over
Switching capacity max. 1.5 kVA
Switching voltage max. 250 V AC
Load type ohmic, inductive, lamp load
Max. output current 6 A per channel
Minimum permitted load 100 mA (12 V DC)
Lamp test, electronic ballast max. 10 A starting current
Current consumption power contacts – (no power contacts)
Current consumption K-bus typ. 130 mA
Contact material AgSnO2
Bit width in the process image 2 inputs (relay ON/OFF), 2 outputs
Operating cycles 106
Operating cycles mech. (min.) 1 x 106
Operating cycles electr. (min.) 1 x 105 (3 A/250 V AC)
Configuration no address or configuration setting
Special features manual/automatic operation
Weight approx. 110 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
Approvals CE
Further manual operating terminals
KM1644 4-channel manual operation
KM2604 4-channel relay module 230 V AC, 16 A, potential-free change-over contact
KM2614 4-channel relay module 230 V AC, 16 A, potential-free change-over contact, with manual operation
KM2652 2-channel relay module 230 V AC, 6 A, manual/automatic operation, switch and relay state readable
KM4602 2-channel analog output terminal 0…10 V, manual/automatic operation