Manual 37485A
DTSC-200 - ATS Controller
Page 12/21
© Woodward
Wiring All Replies
NOTE
This wiring scheme must be used for Delayed or Closed transition switches if the Parameter "Use Limit
sw. OPEN replies" is configured to "YES".
Figure 3-2: Limit switch reply wiring - all replies
•
*1 Limit switch mounted on transfer switch indicating "S1 position"
•
*2 Limit switch mounted on transfer switch indicating "S2 position"
•
*3 Limit switch mounted on transfer switch indicating "S1 open position"
•
*4 Limit switch mounted on transfer switch indicating "S2 open position"
NOTE
Important:
If no voltage is applied to the reply DI, this DI is considered as active by the DTSC, i.e. the limit switch
position is considered as "reached":
24 V at terminal 51 = Switch is NOT in S1 position
0V at terminal 51 = Switch is in S1 position
24 V at terminal 52 = Switch is NOT in S2 position
0V at terminal 52 = Switch is in S2 position
24 V at terminal 53 = Switch is NOT in S1 open position
0V at terminal 52 = Switch is in S1 open position
24 V at terminal 54 = Switch is NOT in S2 open position
0V at terminal 54 = Switch is in S2 open position
50
Common
51
Reply: Switch in S1 position
52
Reply: Switch in S2 position
+24 Vdc
*1
*2
53
Reply: Switch in S1 open position
54
Reply: Switch in S2 open position
*3
*4
GND