Description
ATOS E-ME-AC-05F | Proportional Valve Electronic Driver
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | E-ME-AC-05F |
| Manufacturer | ATOS |
| Product Family | E-ME-AC |
| Product Type | Analog electronic proportional valve driver |
| Valve Type | Double-solenoid proportional valve |
| Feedback | For valves without transducer; external closed-loop controller can provide feedback |
| Nominal Supply | +24 VDC |
| Rectified/Filtered Supply | 21–33 VDC maximum range |
| Maximum Power Consumption | 50 W |
| Maximum Solenoid Current | 3.3 A PWM |
| Ex-Proof Valve Current | 2.5 A maximum |
| Standard Reference Input | ±5 VDC |
| Reference Adjustment Range | ±2.5 V minimum to ±10 V maximum |
| Optional Current Input | 4–20 mA with /I option |
| Voltage Input Impedance | >50 kΩ |
/I Input Impedance |
316 Ω |
| Enable Input | 5–24 VDC |
| Maximum Ramp Time | 5 seconds |
| Potentiometer Supply | +5 V / 50 mA and -5 V / 20 mA |
| Card Format | Europe, 100 × 160 mm |
| Connector | Male DIN 41612 /D |
| Operating Temperature | 0 to +50°C |
| Storage Temperature | -20 to +70°C |
| Front Panel | 128.4 × 35.3 mm |
| Weight | Approximately 540 g |
ATOS documentation specifies PWM solenoid outputs, short-circuit protection, adjustable ramp behavior, enable control, and front-panel adjustment of bias and scale. For the 05F version, separate adjustment facilities are provided for solenoids S1 and S2.
Product Introduction
The ATOS E-ME-AC-05F is an analog electronic driver designed to control double-solenoid proportional valves in hydraulic systems. It converts an external reference signal into controlled PWM current for the two valve solenoids, allowing proportional control of hydraulic flow, pressure, position, or actuator movement. The card is built in a 100 × 160 mm Eurocard format and uses a DIN 41612 /D connector.
The E-ME-AC-05F can be used in open-loop applications or as the valve-drive stage of a closed-loop hydraulic control system. In a closed-loop arrangement, an external axis controller or PID controller handles the feedback calculation while the E-ME-AC-05F supplies the proportional solenoid current. This distinction matters when diagnosing a machine: the card is the valve-current amplifier, not the complete position or pressure controller.
E‑ME‑AC‑05FModel: E-ME-AC-05F
Manufacturer: ATOS
Product Family: E-ME-AC
Product Type: Analog proportional valve electronic driver
Core Function: Drives two proportional-valve solenoids from an external analog reference signal.
Valve Configuration: Double-solenoid proportional valve
Reference Input: ±5 V standard; 4–20 mA available with /I option
Supply: +24 VDC nominal
Solenoid Current: Up to 3.3 A PWM per output
Format: 100 × 160 mm Eurocard
Connector: DIN 41612 /D
Operating Temperature: 0 to +50°C
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
The common failure mode with an E-ME-AC-05F replacement is treating the card as a generic ±10 V amplifier. The actual installation depends on the proportional valve’s coil characteristics, reference polarity, bias setting, current scaling, ramp configuration, enable circuit, and whether the valve is being controlled by an external closed-loop controller. Incorrect scaling can produce a valve that moves, but does not move with the expected hydraulic gain or neutral position.
Typical Applications
- Hydraulic proportional valve control: Drives two solenoids on double-acting proportional directional valves.
- Flow-control systems: Provides proportional coil current where hydraulic flow is commanded from an analog reference.
- Pressure-control systems: Used as the output stage of an external pressure-control loop.
- Machine-tool and industrial hydraulic systems: Suitable for proportional hydraulic actuators where an external controller supplies the command signal.
Technical Pitfalls to Avoid
- Do not confuse 05F with 01F.
ATOS identifies E-ME-AC-01F for single-solenoid proportional valves and E-ME-AC-05F for double-solenoid valves. The output arrangement is therefore a fundamental part of the application. - Verify the exact reference-input option.
Standard E-ME-AC-05F operation uses a ±5 V reference. A 4–20 mA reference requires the/Ioption. Do not assume every E-ME-AC-05F accepts current input without checking the complete model marking. - Do not replace it with a generic servo amplifier.
The card is designed around proportional hydraulic-valve coils and provides specific bias, scale, ramp, enable, and PWM-current functions. - Record the S1/S2 bias and scale settings.
The E-ME-AC-05F provides separate bias and scale adjustments for the two solenoids. Copying the physical wiring without recording these settings can change valve neutral position and hydraulic response. - Check the coil current before commissioning.
The driver can supply up to 3.3 A PWM, with 2.5 A specified for explosion-proof valve applications. The valve coil’s required current must remain within the appropriate limit. - Use a properly filtered 24 VDC supply.
The specified supply is +24 VDC, with a rectified/filtered operating range of 21–33 V. Supply quality matters because the card directly controls the proportional-valve coil current. - Do not treat the enable signal as a safety function.
ATOS documentation warns that electronic-driver signals should not be used to establish machine safety conditions. Shutdown and hydraulic safety functions require the appropriate independent safety architecture. - Verify the physical connector and rack arrangement.
The E-ME-AC-05F is a 100 × 160 mm Eurocard using a DIN 41612 /D connector. The connector frame is specified separately, so replacement planning should include the existing rack/frame and terminal arrangement.
Related Products
- ATOS E-ME-AC-01F — Single-solenoid version of the E-ME-AC driver family; not a direct output-architecture substitute for the 05F.
- ATOS E-ME-K-PID — PID regulator used in hydraulic control architectures; it performs control calculations rather than serving as the same dual-solenoid output amplifier.
- ATOS E-BM-AC-05H — Later-generation electronic driver associated with double-solenoid proportional valve applications; verify electrical and mechanical compatibility before using it as a replacement.
- ATOS E-BM-AS-PS-05H — Listed by secondary replacement documentation as a suggested replacement for the discontinued E-ME-AC-05F; the complete machine application still needs verification before substitution.
- ATOS E-K-32M — Connector/frame component specified for the E-ME-AC Eurocard family and ordered separately from the driver card.
- ATOS proportional double-solenoid valves — The actual valve coil characteristics must be checked against the driver’s current range and control configuration.
Procurement and Replacement Note
The E-ME-AC-05F is a legacy ATOS proportional-valve driver, and secondary lifecycle documentation identifies it as discontinued. A suggested replacement is the E-BM-AS-PS-05H, but this should be treated as an engineering replacement assessment rather than an automatic drop-in substitution.
For an existing installation, verify the complete card marking, including any /I, /RR, -4, /RR-4, or /4R-4 option suffixes. These options can change the reference-input arrangement, ramp controls, and available internal potentiometers.
Before approving a replacement, document the proportional valve model, S1/S2 coil resistance and rated current, reference-signal type, bias and scale settings, ramp settings, enable wiring, 24 VDC supply, DIN 41612 connector wiring, and external feedback/controller arrangement. For hydraulic machinery, those details are more important than simply matching the E-ME-AC-05F nameplate.
