SUPPLY AND CONTROL OF SERVO-CYLINDERS

A periphery is needed to supply and control the servo-cylinders. This periphery is limited to the valve level and is comprised of connection and servo-valves.

Connection valves supply a hydraulic oil consumer (servo-cylinder, etc.) with hydraulic oil.They are located as close as possible to the consumer and work according to the quiescent current principle (no current = closed).

Servo-valves are electrohydraulic control valves for controlling a source of hydraulic energy (pressure, flow). In conjunction with electrical control circuits and hydraulic cylinders in the servo-cylinder system they serve to convert hydraulic energy to controlled load sequences.

Activation Valve AV 250 l/min

Technical data:

- Switching unit for servo-cylinder
   up to 250 l/min flow
- Activation is free of shocks due
   to pressure or flow changes
- Monitoring of operating pressure
- Automatic shut-off in response
   to pressure drop
- Travel in setup mode with
   throttled
   flow and variable low pressure
- External feed for the 3
-stage servo-valves (Option)
- May be used as single valve or
   as valve block

Servo-Valve
Model 200

Technical data:

- Nominal flow 1 -7 l/min 70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 315 bar
- Characteristic: HR
   (high response)
- Saphire technology
- Miniature design
- High quality

Servo-Valve
Model 454

Technical data:

- Nominal flow 1 - 20 l/min 70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 315 bar
- Characteristic:
   MR ( medium response)
   HR (high response)
- Saphire technology
- Compact design
- High quality

Servo-Valve
Model 500

Technical data:

- Nominal flow 1 - 60 l/min 70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 500 bar
- Characteristic:
   MR (medium response)
   HR (high response)
- Saphire technology
- High quality

Servo-Valve
Model 550

Technical data:

- Nominal flow 1 - 75 l/min 70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 315 bar
- Characteristic:
   MR (medium response)
   HR (high response)
- Saphire technology
- High quality

Servo-Valve
Model 550 E

Technical data:

- Nominal flow 1 - 75 l/min 70 bar
- Operating temperature range:
   - 20 to + 85 °C
- Supply pressure up to 315 bar
- Characteristic:
   HR (high response)
   VHR (very high response)
- Electrical feedback
- LVDT path measuring system
- Integrated electronics
- Saphire technology
- High quality

Servo-Valve
Model 590

Technical data:

- Nominal flow 1 - 20 l/min 70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 315 bar
- Characteristic:
   VHR (very high response)
- Saphire technology
- High quality

Servo-Valve
Model 750

Technical data:

- Nominal flow 95 & 125 l/min
   70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 280 bar
- Characteristic:
   MR (medium response)
- Saphire technology
- High quality

Servo-Valve
Model 890

Technical data:

- Nominal flow 95-230 l/min 70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 280 bar
- Characteristic:
   MR (medium response)
   HR (high response)
- Saphire technology
- High quality

Servo-Valve
Model 1650

Technical data:

- Nominal flow 1 - 60 l/min 70 bar
- Operating temperature range:
   - 30 to + 130 °C
- Supply pressure up to 315 bar
- Characteristic:
   MR (medium response)
   HR (high response)
- Saphire technology
- High quality