Woodward TecJet 110, Инструкция по установке и эксплуатации

Страница: 7 / 52

Manual 26185 TecJet 110 Fuel Metering System
Woodward 1
Chapter 1.
General Information
Introduction
The TecJet™ 110 product is an integrated, digitally compensated control valve
and actuator system for regulating and metering the flow of gaseous fuels. The
device is designed to accept a fuel rate demand signal. It also incorporates
feedback sensors which monitor fuel pressure, temperature, and valve pressure
differential. Based on these sensor signals, the device modulates the valve
opening to produce a physical fuel mass flow which matches the flow demand
level within the accuracy specified elsewhere in this manual.
The device is intended to be mounted on or very close to the engine. The
dominant application of this valve is gas fueled reciprocating engines controlled
by an electronic engine control system.
Throughout the remainder of the manual, the TecJet 110 valve and
actuator system will be referred to simply as the TecJet 110.
Connections to the TecJet 110
The TecJet 110 valve has the following connections to the ECM (Engine Control
Module), and the engine harness:
Earth Ground Provided through ground lug on housing.
Power Input 18–32 Vdc measured at the TecJet 110.
Key Switch input Contact input to switch the TecJet 110 in and out of
a low-power state.
CANbus In Configurable as mass flow demand input.
PWM Configurable as mass flow demand input.
4–20 mA Analog Configurable as mass flow demand input.
CAN ID Inputs TecJet 110 number selection for CANbus IDs.
CAN Termination Internal CAN termination resistor option.
CANbus Out Second set of CAN pins for connecting to the next
CAN device.
Status Output High side switch that changes state during a fault
condition.
The TecJet 110 has available RS-232 connections in the main connector for
program upgrades and service tool interfacing by qualified service personnel.