Digital Output
KL2904
Output 1
Output 3
Output 2
Output 4
Output 1
Output 2
Output 3
Output 4
Diagnostic 1
Diagnostic 2
Diagnostic 3
Diagnostic 4
Top view
Contact assembly
Connection
Power contacts
KL2904 | 4-channel digital output terminal, TwinSAFE, 24 V DC
The KL2904 safety Bus Terminal is a digital output terminal with four channels. It switches 24 V DC actuators with up to 2 A total current. The KL2904 meets the requirements of IEC 61508 SIL 3 and EN 954 Cat. 4. If the Bus Terminal detects a fault, it switches off automatically (fail stop).
| Technical data | KL2904 |
|---|---|
| Number of outputs | 4 |
| Protocol | TwinSAFE |
| Status display | 8 LEDs: 1 per output, 4 diagnostic |
| Response time | typ. 4 ms (read input/write to K-bus) |
| Current consumption K-bus | 250 mA |
| Fault response time | < watchdog time (parameterisable between 5 and 100 ms) |
| Bit width in the process image | 6 byte input/6 byte output |
| Supply voltage | 24 V DC (‑15 %/+20 %) |
| Output current | 0.5 A max./20 mA min. (per channel) |
| Weight | approx. 100 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 |