General Information

System Components

The three main components of the system are (1) EPS 1000 controller module, (2) EPS calibration tool kit (ACT), and (3) speed sensor if used in speed switch mode. In addition, and depending on the features selected, several subcomponents, such as oil pressure switches and temperature switches, may be connected to the system.

EPS 1000 Controller

The EPS 1000 is a programmable, three-channel equipment protection module designed to perform a variety of functions simultaneously. It is suited for engine/equipment protection, sequenced operations, and critical timing applications. It can also be used for unattended engine starting using autocrank and glow plug functions.

The controller is software programmable and has no manual adjustments. The All-purpose Calibration Tool (ACT) is used for programming (configuring and adjusting) the EPS module.

Calibration Tool Kit (ACT)

The calibration tool kit includes an interface module, RS-232 cable, installation guide, and the calibration software (ACT) CD-ROM.

ACT is a PC (personal computer) based software calibrating and monitoring tool. ACT is designed specifically for use on applications with the EPS 1000 controller. The tool can be run on any IBM compatible computer that meets the require ments listed in “ACT Installation.”

Calibration is a simplified process when using ACT’s specially developed EPS Wizard. The Wizard prompts the operator for all necessary information and calibrates only those parameters that are required to produce the desired results.

Once the EPS 1000 module has been programmed, ACT may be disconnected. The EPS unit will continue to operate normally with ACT either connected or disconnected.

Figure 2. All-purpose Calibration Tool (ACT) Software CD-ROM

Speed Sensors

If used in speed switch mode, the EPS module will measure speed signal inputs from magnetic pickups, ignition or Hall Effect sensors. Mini-Gen® signal generators available from Woodward may also be used.

Features

The EPS 1000 is PC programmable and microprocessor based for accurate and stable set points. The following programmable features are standard. 

Three output channels for independent configuration of various actions. Each channel can be configured in one of three modes: 

1. Speed switch 

2. Autocrank controller 

3. Glow plug controller 

Speed signal input is user selectable for magnetic pickup, ignition or Hall 

Effect sensors. Mini-Gen® signal generators may also be used. (See “Speed Input Calibration” section for further information.) 

Front panel LED’s provide instant visual data on operational status

Autocrank mode allows programming for crank time, rest time, and 

maximum crank attempts 

Glow plug mode controls glow plug ON time 

Test verify function permits testing of channel at 70% of set point(programmable 0 to 99% of set point) 

Normal or reverse relay logic is configurable by user 

Six switch inputs plus engine speed input provide versatile programming

Engine/equipment protection (EP) switch inputs can be enabled at present (programmable) RPM after present time delay

Two auxiliary outputs indicate status and fault codes

Engine status indicator displays engine failure codes to aid in trouble shooting engine or equipment problems