ZES-40 Control unit

Description

Electric control of the direction of flow of the working medium in machines and equipment used in underground workings of mining facilities, in areas classified as explosion hazard zones.

Specification

  • Electrical control of actuating directional valves in hydraulic machines and equipment
  • Designed for use in potentially explosive atmospheres

Operating parameters

 

Mode of operation

Continuous operation

Operating conditions:

 

- Ambient temperature

0 – 65°C

- Relative air humidity

Up to 95% at 25°C

Hydraulic fluid

Oil-water emulsion, hydraulic oil, or other fluids with similar properties

- Nominal fluid viscosity

37 mm²/s

- Viscosity range

2.8 – 380 mm²/s

- Required filtration level

40 µm

- Nominal pressure

32 MPa

- Maximum pressure

35 MPa

- Maximum flow rate

Dependent on operating pressure, hydraulic medium, and permissible load on the actuating directional valves

- Optimal fluid operating temperature (in tank)

20 – 60°C

- Fluid temperature range

0 – 70°C

Supply Voltage

10.2 – 13.8 V DC from an intrinsically safe power supply with a maximum output current of 2 A

Permissible Output Parameters

Uᵢ = 15.3 V, Iᵢ = 2 A, Lᵢ ≈ 0; Cᵢ ≈ 0

Coil Resistance

R = 126 ± 10 Ω

Rated Fuse Current for Coil

250 mA, single-use fuse

Overall Dimensions

40 × 133.5 × 165 mm

Weight

Approx. 4.0 kg

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