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  4. Intrinsic Safety Isolated Barriers
  5. Intrinsic Safety Isolated Barriers of the H-System

Isolated Barriers of the H-System

isolated barriers H-system

The H-System consists of isolation barriers for signals from or into potentially explosive areas with galvanic isolation which are mounted on a termination board. The termination boards are mounted in the control cabinet on a 35 mm DIN rail. The signal loop between field and control side is closed by plugging in the module. The H-System is an efficient solution in medium-sized to large systems in combination with process control systems.

The H-System offers useful benefits:

    No expensive and manual individual wiring thanks to fixed wiring

    • Fast and safe connection to the process control system

    Less effort for planning and wiring, installation and commissioning, documentation

    • High availability thanks to diagnostic function and fault monitoring in modules and terminati-on boards

Portfolio

isolated_barrier_termination_board

Termination Boards

Termination boards are mounted on a 35 mm DIN mounting rail in the switch cabinet and connected to a control system via system connectors. The system-specific variants have been tested with process control and safety systems from leading DCS companies.

In addition, termination boards are available as a universal design with terminals for freely selectable contacting or with D-sub connectors for adaptation to control system-specific lines.

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isolated_barrier_universal_barrier

Universal Barrier

The Universal Barrier independently detects I/O requirements and self-adjusts to the needed signal type—enabling a new freedom from device dependency in your process or safety I/Os and control cabinets.

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isolated_barrier_switch_amplifier h-system

Switch Amplifiers

Switch amplifiers process digital input signals, amplify them, and initiate switching outputs via relays or transistors.

Applications include limit value monitoring, final position feedback, and position detection of moving parts such as valves. Switch amplifiers also enable 1:1 pulse transmission to the output.

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isolated_barrier_solenoid_driver h-system

Solenoid Drivers

Solenoid drivers transmit digital output signals from the control unit to the valve. In contrast to relay modules, they also provide voltage and current.

They control valves, regulate open/close functions, and can control visual or acoustic indicators.

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isolated_barrier_safety_relay h-system

Relay Modules

Relay modules transmit digital output signals from the control system to the field device via a relay. The voltage is applied externally.

Applications include signal horns, warning lights, applications with active cooling, galvanic isolation of controls during system modernizations, emergency shutdown valves, and motor controls.

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isolated_barrier_transmitter_power_supply h-system

Transmitter Power Supplies

Transmitter power supplies transmit analog input signals from transmitters to the controller and supply voltage via the same line. SMART transmitter power supplies modulate a digital data signal to the 4 … 20 mA signal.

Typical areas of application are the measurement of pressure, temperature, or fill level.

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isolated_barrier_signal_onverter h-system

Signal Converters

Signal converters transmit analog input signals to the controller and convert them into standard signals. They amplify and linearize the sensor signal.

Applications include the use of field devices on control systems, especially for small PLCs that cannot process all sensor signals.

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isolated_barrier_current_driver h-system

Current Drivers

Current drivers transmit analog output signals from the control side to the field side, typically a 4 … 20 mA signal. They control positioners, I/P converters, or field displays, for example.

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isolated_barrier_accessories h-system

Accessories

The H-System accessories include components for supply and commissioning. Special terminals are available for adapting any installation to individual requirements.

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