Elevator Control Valves EV 4
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Elevator Control Valves The BLAIN EV4-vvvf program includes the widest range of vvvf solution offered to the elevator industry for high performance passenger elevators. Easy to install, EV4's are smooth, reliable and precise in operation throughout extreme load and temperature variations with inbuilt 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. Description Available port sizes are W, 11/2", 2" and 2%" pipe threads, depending on flow. EV4 eliminates high inrush currents and do not require wye-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. Caution: The EV4 valve is to be used only together with YASKAWA L1000H inverter and not as standalone control valve. EV4 valves include the following features essential for efficient installation and trouble free service: Simple Responsive Adjustment Temperature and Pressure Compensations Pressure Gauge and Shut Off Cock Self Closing Manual Lowering Self Cleaning Pilot Line Filters Self Cleaning Main Line Filter (Z-T) Built-in Turbulence Suppressors 70 HRc Rockwell Hardened Bore Surfaces 100% Continuous Duty Solenoids Compact and asthetic design Technical Data: Flow Range: Pressure Range (valve): Burst Pressure Z: Pressure Drop P-Z: Weight: Oil Viscosity: 25-75 cSt. at 40°C Solenoids AC: 24 V/1.8 A, 42 V/1.0 A, 110 V/0.43 A, 230 V/0.18 A, 50/60 Hz. Insulation Class, AC and DC: IP 68 Germany info@blain.de Designer and Manufacturer of the highest quality control valves & safety components for hydraulic elevators

Optional Equipment EN Emergency Power Solenoid KS Slack Rope Valve BV Main Shut-Off Valve DH High Pressure Switch DL Low Pressure Switch CX Pressure Compensated Down EV4 %■ Up Up 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 m/s (200 fpm). 1 Full Speed and 1 Levelling Speed. All down functions are smooth and adjustable. Control Elements Adjustments UP Adjustments DOWN C Solenoid (Down Deceleration) D Solenoid (Down Stop) H Manual Lowering S Relief Valve...

Warning: Only qualified personnel should adjust or service the EV4 valve and the L1000H drive. Unauthorised manipulation may result in injury, loss of life or damage to equipment. Prior to servicing internal parts, ensure that the electrical controller is switched off, cylinder line is closed and residual pressure in the valve is reduced to zero. Adjustments DOWN Valves are already adjusted and tested. Check electrical operation before changing valve settings. Test that the correct solenoid is energised, by removing nut and raising solenoid slightly to feel pull. Nominal Settings:...

EV4 Spare Parts List EV4 Pos. No. Item -eEESEE®- 2 Plug Adjustments O Taper threads: Do not exceed 8 turns of piping into the valve connections. Flow Guide Selection Charts for Down Direction 2%" To order EV4: Size (inch), state pump flow, empty car pressure (or flow guide size) and solenoid voltage. Example order: 1V2"EV4, 380l/min, 18bar (empty), 110AC or 11/2"EV4/4/110AC BLAIN HYDRAULICS Designer and Manufacturer of High Quality Valves for Hydraulic Elevators Printed in Germany