The KL1212 digital input terminal acquires the binary control signals from the process level and transmits them, in an electrically isolated form, to the higher-level automation unit. The KL1212 generates a short-circuit protected 24 V DC supply voltage for sensors. The sensor outputs can be switched on or off by the controller. A short-circuit or an open lead in the sensor supply is detected, and the terminal status is relayed to the controller via the K-bus. The Bus Terminal contains two channels that indicate their signal state and errors by means of LEDs.
Technical dataKL1212 | KS1212Connection technology3-wireSpecificationEN 61131-2, type 1Number of inputs2Nominal voltage24 V DC (-15 %/+20 %)“0” signal voltage-3…+5 V“1” signal voltage15…30 VInput filtertyp. 3.0 msInput currenttyp. 5 mASensor supply max.0.5 A (short-circuit-proof)Current consumption K-bustyp. 8 mAElectrical isolation500 V (K-bus/field potential)Bit width in the process imageinput/output: 4 inputs (2 error bits/2 signal bits); 2 outputs (2 sensor supply)Input/output bit assignmentsinput:bit 3bit 2bit 1bit 0output:bit 1bit 0err. 2err. 1on 2on 1off 2off 1Configurationno address or configuration settingWeightapprox. 55 gOperating/storage temperature0…+55 °C/-25…+85 °CRelative humidity95 %, no condensationVibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4Protect. class/installation pos.IP 20/variablePluggable wiringfor all KSxxxx Bus TerminalsApprovals/markingsCE, UL, ATEX, GLEx markingII 3 G Ex nA IIC T4 Gc
