SOR Multi Point RF Level Switch - Manual (Page 23)

Form 677 (05.13) ©SOR Inc. 23/36
Output Relay Wiring
Before connecting the output relay to external devices, determine which failsafe mode is
best suited for the adjustable differential set point. Refer to the continuity chart below when
connecting to the adjustable differential relay terminal strips.
For the adjustable differential set point:
LO mode: When the upper limit is satisfied, the relay turns on. When process level falls below
the lower limit, the relay turns off and remains off until the set point is once again satisfied.
HI mode: When the upper limit is satisfied, the relay turns off. When process level falls below
the lower limit, the relay turns on and remains on until the upper limit is once again satisfied.
Switch
Position
Set Point
Status
Relay
Coil
Relay Continuity
Failsafe
LO/HI
OFF
ON
NC1 C1 NO1 NO2 C2 NC2
NC1 C1 NO1 NO2 C2 NC2
NC1 C1 NO1 NO2 C2 NC2
NC1 C1 NO1 NO2 C2 NC2
ON
OFF
Failsafe
LO/HI
Set
Point
Set
Point
Set
Point
Set
Point