Polarity of solenoid valves
If the polarity is incorrect or reversed, the solenoid valves may be damaged
and dangerous explosive situations may occur.
► DO NOT reverse the polarity.
► Always make the electrical connections carefully observing the correct
+/- polarity marked on the solenoid valve coil.
► The terminal strip assignments and designations from chapter 6.4.3 must
be observed.
The following terminal strip assignment must be observed for internal and
external connections:
Description of the function of the terminal strips
Intrinsically safe
circuit
Terminal strip
Designation
Functional description
Sensor S1
S1+
Sensor S1+
Internal connection sensor L+ (brown wire)
S1-
Sensor S1-
Internal connection sensor L- (blue wire)
R1-
Feedback R1-
External connection feedback sensor S1-
R1+
Feedback R1+
External connection feedback sensor S1+
Sensor S2
S2+
Sensor S2+
Internal connection sensor L+ (brown wire)
S2-
Sensor S2-
Internal connection sensor L- (blue wire)
R2-
Feedback R2-
External connection feedback sensor S2-
R2+
Feedback R2+
External connection feedback sensor S2+
Solenoid valve Y1
Y1+
Solenoid valve Y1+
Internal connection solenoid valve L+ (red wire)
Y1-
Solenoid valve Y1-
Internal connection solenoid valve L- (black wire)
V1-
Actuation V1-
External connection solenoid valve Y1-
V1+
Actuation V1+
External connection solenoid valve Y1+
Solenoid valve Y2
Y2+
Solenoid valve Y2+
Internal connection solenoid valve L+ (red wire)
Y2-
Solenoid valve Y2-
Internal connection solenoid valve L- (black wire)
V2-
Actuation V2-
External connection solenoid valve Y2-
V2+
Actuation V2+
External connection solenoid valve Y2+
Solenoid valve Y3
Y3+
Solenoid valve Y3+
Internal connection solenoid valve L+ (red wire)
Y3-
Solenoid valve Y3-
Internal connection solenoid valve L- (black wire)
V3-
Actuation V3-
External connection solenoid valve Y3-
V3+
Actuation V3+
External connection solenoid valve Y3+
Assembly and installation
Electrical connections
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25.04.2023
