Description
Easy to install, EV4s are smooth, reliable and precise in operation throughout extreme load and temperature variations with built-in overload protection and different energy saving modes. The EV4 system uses the control of L1000H vvvf drive in the up travel, while down travel is managed by the EV4 valve itself. In this way, the EV4-vvvf solution offers the most cost-effective and energy-efficient solution.
Depending on flow available port sizes are ¾", 1½", 2" and 2½" pipe threads. EV4 eliminates high inrush currents and do not require star-delta switching. According to customers‘ elevator data, valves are factory adjusted, ready for operation and very simple to readjust if desired. The L1000H YASKAWA drive combined with feedback systems that are designed to compensate elevator speed fluctuations regardless oil temperature and car load conditions.
Up directionUp to 1 m/s (200 fpm). 3 Full Speeds and 1 Levelling Speed.
Up Start, speeds, transition times and up stop are adjusted by inverter parameters.
Down Up to 1.0 m/s (200 fpm). 1 Full Speed and 1 Levelling Speed.
All down functions are smooth and adjustable.