Stop Open Close Full open Full closed Error Power supply OFF at full close. OFF at full open. OFF at over-torque in closed direction. OFF at over-torque in open direction. ON at slightly before full open. ON at slightly before full closed. ON at over-torque in open direction. ON at over-torque in closed direction. F NFB RST 8 R 4 R F F R R1 T1 OTLS-1 STLS-1 31 10 32 27 28 29 R F Motor circuit power Operation circuit power OLS-1 SLS-1 OLS-2 SLS-2 THP 2 5 9 17 THP 13 1 NFB Fuse Closed Open 6 OTLS-2 STLS-2 18 14 SLS-1 Closed Torque STLS-1 Closed Limit SLS-2 Closed No-voltage OLS-2 Open No-voltage Open Limit OLS-1 Open Torque OTLS-1 Closed Torque STLS-2 Open Torque OTLS-2 Actuator Space heater (standard feature) Potentiometer (optional) Thermal protector Actuator 134 BUTTERFLY VALVE 40mm - 250mm ROTARY DAMPER 40mm - 600mm