Potentiometer (optional) Stop Open Close Error Full open Full closed Space heater (standard feature) Power supply OFF at full open. ON at full open. OFF at full close. ON at full close. Potentiometer (bundled with R/I transmitter) R/I transmitter (optional) OFF at over-torque in open direction. OFF at over-torque in closed direction. M F U W NFB RST THR 2 1 10 9 R 6 5 12 11 13 R F F R OLS SLS THR R1 T1 OTLS STLS 3 7 H1 4 H2 A B C R F Motor circuit power Operation circuit power Closed N.O. contact SLS SLS Closed Limit OLS Closed Open Limit Open N.O. contact OLS Open Switching chart NFB Fuse Actuator Actuator R1 T1 A1 A2 A B C A1 A2 R1 T1 A Output signal Open Torque OTLS STLS Closed Torque 4-20 mA DC V 8 138 700mm - 1,200mm