Weidmuller RI4 - Multi channel signal transmitter / display - Handbuch (Seite 25)

5
24 Receive −
RS422/485*
Output
(* For RS485 output connect 24 & 27 and 25
& 26)
25 Receive +
26 Transmit +
27 Transmit −
28 Not used
29 Normally Closed
Alarm Channel One
(standard)
30 Normally Open
31 Common
32 Normally Closed
Alarm Channel Two
(optional)
33 Normally Open
34 Common
35 Normally Closed
Alarm Channel Three
(optional)
36 Normally Open
37 Common
38 Normally Closed
Alarm Channel Four
(optional)
39 Normally Open
40 Common
Protective Earth Via stud on the underside of the case
Note 1: Double grey lines indicate isolation between ports
- Caution risk of electric shock (screw terminals can carry high voltages)
Connections(continued)