Overview
The document describes the X/Y-Control Transmitters with a redundant inductive control system, specifically the ST 2000 and ST 2002 models. These transmitters are used in hydraulically operated control equipment for construction, drilling vehicles, cranes, excavators, ships, and offshore facilities. They are designed to withstand extreme conditions and provide direction-dependent switch and control signal outputs for both X and Y axes.

Construction and Measuring Principle
The transmitters use wear-free and non-contacting inductive linear transmitters as primary elements. The design is robust, similar to hydraulic control transmitters. The built-in electronic circuit provides control signals per axis, either as current or voltage, with switchable characteristics. A microprocessor can be incorporated for individual matching of characteristics. All components are enclosed in an aluminum casing with IP 66 protection.

Additional Options

• Integrated power electronic circuit with pulse-modulated output current up to 1000 mA for direct drive of hydraulic servo valves.
• Integrated CAN-bus interface with customizable transmission protocol.
• Microprocessor for individual matching of control output characteristics.
• Electronic zero and direction signal output from a redundant inductive control system.
• Uniaxial, duplex-uniaxial, and pedal actuated transmitters.

Specifications
Mechanical Data

• Casing: Anodized aluminum
• Degree of Protection: IP 66
• Lever Displacement: ± 20°
• Actuation: Pull-back spring to central position

Electrical Data

• Control Current: ± 20 mA
• Control Voltage: ± 10 V
• Supply: 18–33 VDC
• Control Contacts: 30 V, 5 A
• Temperature Range: –30°C to +70°C

Control Handle ST 2000
Mechanical Data

• Shell: Noryl GFN 1
• Bellows: Simrit 42 CR 784
• Protective Caps: Ultramid A 3 K
• Color of Caps: Various (white, yellow, red, blue, green, black)

Switch Data

• Degree of Protection: IP 67
• Voltage: Max. 30 VDC
• Current: Max. 3 A
• Temperature Range: –40°C to +85°C
• Contact Material: Silver

Vibrator Data

• Voltage: 24 VDC
• Coil Resistance: 160
• Duty Cycle: 100%
• Frequency: Max. 25 cps

Contact Information
Fernsteuergeräte Kurt Oelsch GmbH and FSG Fernsteuergeräte Meß- und Regeltechnik GmbH provide contact details for further inquiries.