Instruction ManualOCM Pro CF®OCM Pro CF - Rev. 07 as of 04.12.2012 Page 45Fig. 6-35 DC model power supply6.5 Regulator Mode6.5.1 GeneralKnowledge in control technology is necessarily required in order to correctlyand reliably set the controller!An OCM Pro CF, type >M4< is required in order to achieve volume control whichis self-controlled by the transmitter. type >S4< neither has an external set pointinput nor the two digital outputs to drive the regulator slide valve or digital inputsfor the slide valve monitoring. If you operate an OCM Pro CF, type S4 for flowrate control please use a sufficient external controller and program it accordingto manufacturer specifications.Typically there are sluice gate valves, knife gate valves or iris gate valves withelectrically driven three-step controller in use. Analog-driven slide valves cannotbe used. We recommend the following regulating times (time elapsed betweenvalve completely open and completely closed) for the selection of gate valves:= 300 mm (11.8 in) diameter: min. 60 seconds= 500 mm (19,7 in) diameter: min. 120 seconds= 800 mm (31.5 in) diameter: min. 240 seconds= 1000 mm (39.4 in) diameter: min. 300 secondsFor the correct driving as well as for error monitoring of the slide valve, the Way-End-Switches “OFF“ and “ON“ as well as the torque switches “ON“ are a manda-tory requirement. These signals have to be connected to the digital inputs of theOCM Pro CF. Please note to select gold-plated contacts in order to ensure con-tact reliability. Connect a signal relay between switches and OCM Pro CF digitalinput to safely conduct the 10 mA input current.Analog position feedback to OCM Pro CF is not planned.The OCM Pro CF operates as a three-step controller with surge detection, quickclose control, slide valve monitoring and automatic flush function.