Yuken AME-D-10-100-20 100 VAC Proportional Valve Amplifier

Description

Key Technical Specifications

The original Yuken power-amplifier documentation specifies a 1 A maximum output for a 10 Ω solenoid, +10 VDC maximum input, 10 kΩ input impedance, 1 A/5 V maximum gain, variable dither, 100 VAC power, 55 VA maximum power input, 0–50 °C ambient temperature, and approximately 2.1 kg mass.

Model Number Breakdown

Yuken’s catalog explicitly shows the model construction as AME-D-10-100-20, with D representing DC input, 10 representing the 10 Ω load class, 100 representing AC 100 V, and 20 representing the design number.

Product Introduction

The Yuken AME-D-10-100-20 is a DC-input power amplifier designed to drive Yuken’s 10 Ω series proportional electro-hydraulic valves. It converts a DC command signal into regulated solenoid current, allowing the hydraulic valve to control pressure or flow according to the applied command. Yuken specifically lists this amplifier for 10 Ω proportional valve applications.

The exact power-supply suffix matters: AME-D-10-100-20 is the 100 VAC version. Yuken also documents an AME-D-10-200-20 version for 200 VAC service, so the two should not be treated as interchangeable simply because their base model numbers are similar.

AME-D-10-100-20

AME-D-10-100-20

Installation & Configuration Guide

Stage 1 — Pre-Installation Preparation

1. Confirm the replacement nameplate reads AME-D-10-100-20.
2. Verify that the connected proportional valve uses the 10 Ω solenoid configuration.
3. Confirm the available control-panel supply is appropriate for the 100 VAC amplifier.
4. Record the existing command-signal wiring and adjustment settings.
5. Back up or document the machine’s hydraulic-control parameters.
6. Disconnect and isolate the AC supply before opening the control cabinet.

⚠️ Do not connect the amplifier to a 200 VAC supply. The 100 model designation identifies the 100 VAC version.

Stage 2 — Removing the Existing Amplifier

1. Put the machine into its approved maintenance state.
2. Isolate the amplifier’s AC power.
3. Verify absence of hazardous voltage with an appropriate meter.
4. Label the DC command-input and valve-solenoid wiring.
5. Disconnect the wiring without pulling on individual conductors.
6. Remove the amplifier from its mounting arrangement.
7. Inspect the wiring and terminal hardware for heat damage or loose connections.

Stage 3 — Installing the AME-D-10-100-20

1. Verify both the model and valve coil resistance before wiring.
2. Mount the amplifier securely in the control cabinet.
3. Reconnect the 100 VAC supply according to the Yuken wiring documentation.
4. Connect the DC command signal.
5. Connect the proportional-valve solenoid circuit.
6. Reproduce the documented adjustment settings from the removed unit.
7. Check grounding and terminal tightness before energizing the system.

⚠️ The amplifier is designed around a 10 Ω solenoid load. Do not substitute a valve with a different coil resistance without confirming compatibility with Yuken’s specifications.

Stage 4 — Power-On & Testing

1. Energize the amplifier under controlled maintenance conditions.
2. Confirm that the supply voltage is within the specified service range.
3. Apply a low-level command signal initially.
4. Verify that the proportional valve responds in the expected direction.
5. Check the hydraulic pressure or flow response.
6. Increase the command gradually while monitoring the hydraulic system.
7. Verify the complete operating range and return-to-zero behavior.
8. Check for excessive solenoid heating, unstable valve movement, or unexpected hydraulic pressure.

⚠️ Never perform the initial proportional-valve test with personnel exposed to moving machinery or uncontrolled hydraulic motion.

FAQ

What is the Yuken ?

It is a DC-input power amplifier for Yuken 10 Ω proportional electro-hydraulic valves. The amplifier regulates the solenoid current according to the applied DC command signal.

What power supply does require?

It is the 100 VAC version. The documented serviceable range is approximately 90–132 VAC, with a maximum power input of 55 VA.

What solenoid resistance is this amplifier designed for?

The -10 designation identifies the 10 Ω solenoid/load class. Yuken specifies a maximum output current of 1 A for the 10 Ω solenoid.

What is the input signal?

The is a DC-input type with a maximum input voltage of +10 VDC and a 10 kΩ input impedance. Its documented maximum gain is 1 A per 5 V input.

What is the purpose of the dither function?

The amplifier provides variable dither, which is used with proportional valve control to help maintain controlled solenoid movement and reduce effects associated with valve friction and stick-slip behavior. The exact adjustment should follow the valve/amplifier application requirements.

Can replace AME-D-10-200-20?

Not directly. The two models have different AC supply ratings: 100 VAC versus 200 VAC. Yuken lists them as separate models.

Which Yuken valves can use this amplifier?

Yuken identifies the for 10 Ω series proportional valves, and distributor documentation specifically identifies EFG/EFCG series proportional valves as applicable products.

One important procurement point: do not use the conflicting third-party listing that describes this exact model as a 24 VDC amplifier for a 40 Ω valve. That specification conflicts with Yuken’s own catalog and with the model-number structure.