SIMODRIVE 611 UNIVERSAL DIGITAL CLOSED-LOOP CONTROL PLUG-IN UNIT, 1 AXIS, RESOLVER, ANALOG SET VALUE INTERFACE, CLOSED-LOOP SPEED CONTROL FOR 1FT6, 1FK6, 1FE1, 1FN1/2, 1PH2/4/6/7 MOTORS, FITTED FOR PLUG-IN OPTION