3.1.4 Terminal X6
21. Output 1 potential free
25. NC Relay Ready
22. Output 2 potential free
26. NO Relay Ready
23. Output 3 potential free
27. Option safety relay
24. Common reference
28. Option safety relay
of the outputs
The outputs X6: 21 - X6: 24 are designed for 24 Vdc max. 50 mA load. To protect against
destruction, the outputs are secured by 50 mA PTC fuses (self-resetting) and thus short-circuit
proof. The logic of the outputs is only determined by the potential at X6:24 (+24V positive logic;
GND negative logic). The outputs are not connected to the inputs, GND or PE, the outputs are
galvanic isolated by opto-couplers. The function of the output is defined by software.
Positive logic (reference 24Vdc)
Negative logic (reference GND)
internal wiring
external wiring
internal wiring
external wiring
The potential free contact of the relay is connected to X6:25 and X6:26 (contact 30VDC/1A). The
relay has the same function as the output Out 1
The terminals are for optional extensions.
Option safety relay
If the option safety relay is built-in, then the make contact is on X6:27 contact and X6:28 make
contact (max. 30V /1A).
Option analog output
If the option analog output is built-in, these outputs are on the terminals X6:27 Analog 1 X6:28
Analog 2 (0-5V max. 1mA). The reference is GND on terminal X7:9.
If both options are built-in, the analog outputs are on terminals X5:31 Analog Out1 X5:32 Analog
Out2 and X5:33 Analog references.
SIEI-AREG GmbH
Gottlieb-Daimler-Straße 17/3
74385 Pleidelsheim Germany
Fon: +49 7144 89736 0
Art.-No.: 918 111e
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Rev. 09/14