Raymarine FA-2E General, For Use with Host PLC, Computer, Wiring for 4-waysolenoid valve

5.4Wiring instructions

5.4.1 General

A. Extension of leak detector electrode wire:

Keep the resistance value at 5K ohms or below. A resistance greater than the above may make it impossible to detect a conductivity change between the leak detection electrodes. (This is dependent on the controller system.)

B.Wiring of proximity sensor:

Isolate the wires of the proximity sensor from the power line or other high-voltage cable. They should not be installed in the same duct or in the same conduit, otherwise the sensor may malfunction. When extending the wire, if it is not extended beyond 100 ft (30m), use 22 AWG wire. If the extension is for more than 100 ft (30m), use a wire with a conductive resistance of 100 ohms/km or less.

5.4.2 For Use with Host PLC, Computer

Contact Iwaki America to discuss installation and wiring details for use with a PLC or host controller system. In general, the control system should provide the following pump and system features.

•Control of 5 port, 4 way solenoid valve for proper switching of air supply to pump

•High speed (overspeed) limitation protection

•Slow speed (time-up) monitoring

•Leak detection alarm system (if applicable)

•Filter/air bleed system

The control system should ideally include these additional features:

•Pump stroke totalizer

•Pump stroke rate display (can be translated into flowrate display)

•Pressure monitoring and regulating system

•Slow speed start-up or drain cycle capability

5.4.3Wiring for Iwaki America AC-1 Controller

For complete details for use with an AC-1 controller, refer to the AC-1 instruction manual. The following information is supplied as reference.

5.4.4 Wiring for 4-way solenoid valve

Connect the two wires from the 4-way solenoid valve to terminals no. 1 (+) and 2(-) of the controller. Terminals no. 1 and 2 of the AC-1 controller have polarity, the standard Iwaki America 4-way solenoid valve also has no polarity. Some types with a built-in surge suppressor have polarity, which requires special attention to the wiring polarity.

17