Spirax Sarco SP7-20 - SP7-21;22 Electrical Connections; Connection Diagram and Terminals

IM-P706-03 CTLS Issue 1
23
SP7-20 Smart Positioner
3.2.2 Positioner SP7-21/22 Electrical Connection
Fig. 17
A Basic device
B Options, digital feedback with proximity switches or microswitches
Terminal Function/comments
+11/−12 Fieldbus, bus feed
+51/−52 Digital feedback Limit 1 with proximity switch (optional)
+41/−42 Digital feedback Limit 2 with proximity switch (optional)
41/42/43 Digital feedback Limit 1 with microswitch (optional)
51/52/53 Digital feedback Limit 2 with microswitch (optional)
Note : The SP7-20, SP7-21, SP7-22 can be fitted either with proximity switches or microswitches as limit
switches. It is not possible to combine both variants.