EHH-AMP-702-C-20 Vickers
Wake Industrial LLC is not an authorized distributor of this product.
MPN:
The Vickers EHH-AMP-702-C-20 is part of the Vickers Accessories series and operates with a nominal supply voltage of 24 V DC and a maximum power consumption of 35 W. It features an absolute maximum voltage of 40 V DC, a maximum output current of 1.6 A, and supports 24 V logic command input. The dither frequency is 120 Hz and the PWM frequency is 1200 Hz.
Internal Product Review
The EHH-AMP-702-C-20 from Vickers is a high-performance amplifier designed for industrial control, featuring a 24 V logic command input and a maximum output current of 1.6 A. With a PWM frequency of 1200 Hz and a dither frequency of 120 Hz, this unit ensures precise operation for demanding hydraulic and motion control applications. The amplifier stands out for its consistent performance and reliable integration within automation systems.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The EHH-AMP-702-C-20 is an electronic drive amplifier designed by Vickers and supplied under the Vickers Accessories series. The card interfaces between low-level digital controllers and the proportional coils found in hydraulic or motion-control assemblies, allowing automation equipment to regulate actuator force or speed through current modulation. Installed inside a cabinet or manifold block, it receives a single DC supply and produces a controlled output that follows external command signals while protecting connected loads.
The module operates from a nominal bus of 24 V DC, yet its circuitry can withstand surges up to 40 V DC without permanent loss of function. During operation, it draws no more than 35 W, and the power channel can source a continuous 1.6 A to the coil, giving adequate dynamic range for most standard proportional valves. A high input impedance of 2700 Ohms minimizes loading on the driving PLC. The command interface accepts 24 V logic, and output slew begins when the incoming level passes the 15 V on-threshold and is cut off below the 5 V off-threshold, creating a clear hysteresis band for electrical noise immunity. An internal pulse-width modulator shapes the coil current so that it remains linear with respect to the reference signal.
The dynamic qualities of the amplifier help tailor hydraulic response. The pulse-width modulator runs at 1200 Hz, providing fine current granularity without inducing mechanical buzz. For smoother spool movement, the board superimposes a 120 Hz dither on the drive signal, overcoming static friction inside the valve. Adjustable ramp generators allow response to be lengthened up to 5 s or shortened to 50 ms, preventing shocks to the system. The assembly sustains full ratings in ambient air as hot as +70 °C, which supports enclosure mounting near warm power packs.
