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KL1904 | 4-channel digital input terminal, TwinSAFE, 24 V DC

The KL1904 safety Bus Terminal is a digital input terminal for sensors with potential-free contacts for 24 V DC and has four fail-safe inputs. The KL1904 meets the requirements of IEC 61508 SIL 3 and DIN EN ISO 13849 PLe.

Technical data KL1904
Connection technology 2-wire
Safety standard IEC 61508 SIL 3 and DIN EN ISO 13849-1:2008 PLe
Number of inputs 4
Protocol TwinSAFE/FSoE
Status display 8 LEDs: 1 per input, 4 diagnostic
Response time typ. 4 ms (read input/write to K-bus)
Current consumpt. K-bus 48 mA
Fault response time ≤ watchdog time (parameterisable)
Bit width in the process image 6 byte input/6 byte output
Supply voltage 24 V DC (-15 %/+20 %)
Special features 4 safe inputs
Weight approx. 50 g
Operating/storage temperature 0…+55 °C/-25…+70 °C
Permiss. degree of contamin. 2
Climate class EN60721-3-3 3K3
Electrical interference EN 61000-6-2/EN 61000-6-4
Vibration/shock resistance EN 60068-2-6/EN 60068-2-27/29
Installation position horizontal
Protection class IP 20
Approvals CE, UL, Ex, TÜV Süd