Wenglor SS2-00VA000R3, Operating Instructions Manual

Page: 20 / 37

20
EN
Terminal Designation
Input/
Output
Further
Information
Terminal Designation
Input/
Output
Further
Information
1 Muting input 1 I p. 23, section 6.2 13 0 V – –
2 Muting input 2 I p. 23, section 6.2 14 PE (ground) – –
3 24 V DC – – 15 Acknowledgement input I p. 18, section 4.2
4 Muting duration 1 I p. 24, section 6.3 16 Test input I p. 18, section 4.1
5 Muting duration 2 I p. 24, section 6.3 17 S1 NO contact I –
6 Restart inhibit I
p. 19, section
4.2.3
18 S2 NO contact I –
7 Override 1 I p. 26, section 7 19 S2 test O –
8 Override 2 I p. 26, section 7 20 Contactor monitoring I p. 20, section 4.3
9 S1 test O – 21 Signal control O –
10 Muting signal O p. 22, section 5.3 22 OSSD B contact 2 O –
11 Muting enable I – 23 OSSD A contact 1 O –
12 OSSD B contact 1 O – 24 OSSD A contact 2 O –
4.3 Contactor Monitoring
Contactor monitoring is used to determine whether or not external contactors or auxiliary contact elements func-
tion properly. External contactors may only be connected if they are equipped with positively driven, normally
closed contacts. The contactors are monitored statically and dynamically for correct timing performance of the
contacts. Switching time may not exceed 300 ms. 24 V DC is returned to the input via an available NC contact
at the external contactor.
Input for Contactor Monitoring
If external relays or K1 and K2 auxiliary contact elements with positively driven contacts are used, 24 V DC must be
connected in series to the contactor monitoring input (terminal 20) via control contacts K1-1 and K2-1 (NC, block B
in the graphic). Monitoring for correct switching of K1 and K2 is delayed 300 ms after the effective command.
If no K1 and K2 auxiliary contact elements are used, terminals 20 (contact monitoring) and 21 (signal monitoring)
must be connected to each other.