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PowerWizard Technical Manual

PowerWizard 1.0 & 2.

Control Systems

Technical Manual

PowerWizard Technical Manual

Important Safety Information

Most accidents that involve product operation, maintenance and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.

PWTECH/0507/GB

• 1 GENERAL INFORMATION
  • 1.1 Introduction
  • 1.2 Applications
  • 1.3 PowerWizard Variations (PW1.0 and PW2.0)
  • 1.4 PowerWizard Control Module Description
• 2 BASIC OPERATION
  • 2.1 START Mode
  • 2.2 STOP Mode
  • 2.3 AUTO Mode
  • 2.4 Fault/Alarm Reset Process
• 3 USER INTERFACE OVERVIEW
  • 3.1 Function Keys
  • 3.2 Menu Navigators
  • 3.3 Alarm Indicators
• 4 DETAILED OPERATION
  • 4.1 PowerWizard Menu Trees
    • 4.1.1 PowerWizard 1.0 Menu Tree
    • 4.1.2 PowerWizard 2.0 Menu Tree
  • 4.2 Technical Operation
    • 4.2.1 Engine Starting Sequence
    • 4.2.2 Engine Stopping Sequence
    • 4.2.3 Event System
    • 4.2.4 Event State
    • 4.2.5 Event Viewing
    • 4.2.6 Single Event Resetting
    • 4.2.7 Quick Event Resetting
  • 4.3 Security
  • 4.4 Real Time Clock Programming (PowerWizard 2.0)
  • 4.5 Fuel Priming – Engines With Electronic Fuel Lift Pump
  • 4.6 Programmable Cycle Timer – PCT (PowerWizard 2.0)
    • 4.6.1 PCT Status
    • 4.6.2 Controlling The Outputs
    • 4.6.3 PCT Example
• 5 INSTALLATION
  • 5.1 Power Requirements
  • 5.2 Location Considerations
  • 5.3 Electrical Connections
  • 5.4 Transformer Connections
  • 5.5 Data Links
    • 5.5.1 Primary J1939 Data Link
    • 5.5.2 Accessory J1939 Data Link
  • 5.6 Optional Modules PowerWizard Technical Manual
    • 5.6.1 Annunciator (MCM9)
    • 5.6.2 Annunciator Features
    • 5.6.3 Annunciator Specifications
    • 5.6.4 Annunciator LED Colour Scheme
    • 5.6.5 Annunciator Configuration
    • 5.6.6 Annunciator Global Acknowledge
    • 5.6.7 Configuring Annunciator LED Behaviour
    • 5.6.8 PowerWizard Support of the Annunciator
• 6 SETPOINT PROGRAMMING
  • 6.1 Digital Input Programming (Spare Fault Input)
    • 6.1.1 Programming The Active State of the Digital Input
    • 6.1.2 Programming The Event Input Functions
  • 6.2 Relay Output Programming (Spare Fault Output)
    • 6.2.1 Relay Outputs
    • 6.2.2 Programming The Active State Of The Relay Output
    • 6.2.3 Digital Selectors
    • 6.2.4 Programming the Digital Selectors
    • 6.2.5 Event Output Function Configuration
• 7 RETROFITTING POWERWIZARD
  • 7.1 EST Availability and EST Licensing
  • 7.2 Flash Files and Field Replacement Files
    • 7.2.1 Using EST to load Flash Files
    • 7.2.2 Using EST to load Field Replacement Files
  • 7.3 Possible EST Error Messages, their Cause and suggested Action.....................................................
• 8 STEP THROUGH GUIDES
  • 8.1 Reduced Power Mode (RPM)
    • 8.1.1 Enabling Reduced Power Mode Using EST
    • 8.1.2 Enabling Reduced Power Mode Using Keypad
  • 8.2 Service Maintenance Interval
    • 8.2.1 Reset Service Interval Alarm
    • 8.2.2 Change Duration of Service Interval Alarm
    • 8.2.3 Disable Service Interval Alarm
  • 8.3 Setting up Language
  • 8.4 Disabling Not In Auto
  • 8.5 Disabling Thermo Start (Start Aid Activation)
• 9 CONTACT LIST
• APPENDIX A — SPN / FMI LIST
• APPENDIX B — SET POINTS

PowerWizard Technical Manual

1 General Information

1.1 Introduction

Figure 1: PowerWizard Control System Panel

The controller is available in two versions, PowerWizard 1.0 and PowerWizard 2.0. These two versions are based on different features.

This Application and Installation Guide is intended to cover the PowerWizard Generating Set Control and its application in generating set systems. The intended audience for this guide includes generating set system designers, service support personnel, Dealers and service technicians.

PowerWizard Technical Manual

1.4 PowerWizard Control Module Description

Figure 2: PowerWizard Control Module Description

Display screen

AC overview hot-key

DC overview hot-key

Warning lamp

Shutdown lamp

Alarm acknowledge

Lamp test

Run

Auto

Stop

Up cursor

Escape

Right cursor

Enter

Down cursor

Left cursor

PowerWizard Technical Manual

2 Basic Operation

2.1 START Mode

2.2 STOP Mode

2.3 AUTO Mode

Figure 3: Basic Operation – Start, Stop and Auto Modes

Press START Key

Press STOP Key

Press AUTO Key

PowerWizard Technical Manual

3 User Interface Overview

3.1 Function Keys

AC Overview hot-key – The AC Overview key will navigate the display to the first screen of AC information. The AC Overview information contains various AC parameters that summarise the electrical operation of the generating set. (Use the up/down keys to navigate within the AC parameters).

Engine Overview hot-key – The Engine Overview key will navigate the display to the first screen of engine information. The Engine Overview information contains various engine parameters that summarise the operation of the generating sets. (Use the up/down keys to navigate within the Engine parameters).

Lamp Test – Pressing and holding the Lamp Test key will cause all of the LED’s and the display screen pixels to turn on.

RUN – Pressing the Run key will cause the engine to enter the run mode.

AUTO – Pressing the Auto key will cause the engine to enter the auto mode.

STOP – Pressing the Stop key will cause the engine to enter stop mode.

3.2 Menu Navigators

Scroll Up – The Scroll Up key is used to navigate up through the various menus or monitoring screens. The Scroll Up key is also used during setpoint entry. During numeric data entry the Scroll Up key is used in order to increment the digits (0-9). If the setpoint requires selection from a list, the Scroll Up key is used to navigate through the list.

Escape – The Escape key is used during menu navigation in order to navigate up through the menu/sub-menu structure. Each key press causes the user to move backwards/upwards through the navigation menus. The Escape key is also used to exit/cancel out of data entry screens during setpoint programming. If the Escape key is pressed during setpoint programming, none of the changes made on screen will be saved to memory.

Scroll Right – The Scroll Right key is used during setpoint adjustment. During numeric data entry, the Scroll Right key is used to choose which digit is being edited. The Scroll Right key is also used during certain setpoint adjustments to select or deselect a check box. If a box has a check mark inside, pressing the Scroll Right key will cause the check mark to disappear, disabling the function. If the box does not have a check mark inside, pressing the Scroll Right key will cause a check mark to appear, enabling the function.

Enter – The Enter key is used during menu navigation to select menu items in order to navigate forward/downward in the menu/sub-menu structure. The Enter key is also used during setpoint programming in order to save setpoint changes. Pressing the Enter key during setpoint programming causes setpoint changes to be saved to memory.

Scroll Down – The Scroll Down key is used to navigate down through the various menus or monitoring screens. The Scroll Down key is also used during setpoint entry. During numeric data entry the Scroll Down key is used in order to decrement the digits (0-9). If the setpoint requires selection from a list, the Scroll Down key is used to navigate down through the list.

Scroll Left – The Scroll Left key is used during setpoint adjustment. During numeric data entry, the Scroll Left key is used to choose which digit is being edited. The Scroll Left key is also used during certain setpoint adjustments to select or deselect a check box. If a box has a check mark inside, pressing the Scroll Left key will cause the check mark to disappear, disabling the function. If the box does not have a check mark inside, pressing the Scroll Left key will cause a check mark to appear, enabling the function.

PowerWizard Technical Manual

3.3 Alarm Indicators

Yellow Warning Light – A flashing yellow light indicates that there are unacknowledged active warnings. A solid yellow light indicates that there are acknowledged warnings active. If there are any active warnings, the yellow light will change from flashing yellow to solid yellow after the Alarm Acknowledge key is pressed. If there are no longer any active warnings, the yellow light will turn off after the Alarm Acknowledge key is pressed.

Red Shutdown Light – A flashing red light indicates that there are unacknowledged active shutdown events. A solid red light indicates that there are acknowledged shutdown events active. If there are any active shutdown events the red light will change from flashing red to solid red after the Alarm Acknowledge key is pressed. Any condition that has caused a shutdown event must be manually reset. If there are no longer any active shutdown events, the red light will turn off.

Alarm Acknowledge – Pressing the Alarm Acknowledge will cause the horn relay output to turn off and silence the horn (if installed). Pressing the key will also cause any yellow or red flashing lights to turn off or to become solid depending on the active status of the alarms. The Alarm Acknowledge may also be configured to send out a global alarm silence on the J1939 Data Link, which will silence horns on annunciators. Pressing and holding the Alarm Acknowledge key can be used to reset all active warnings or shutdowns.

PowerWizard Technical Manual

4.1.2 PowerWizard 2.0 Menu Tree

PowerWizard 2.0 Generating Set Control Menu Structure

Figure 6: PowerWizard 2.0 Menu Tree

MAIN MENU EVENT LOG ENGINE OVERVIEW AC OVERVIEW CONFIGURE I/O STATUS CONTROL PREFERENCES

ACTIVE EVENTSGENSET CONTROL (^11) ENGINE CONTROL 0

ENG SPEED SENSORERRATIC/LOST 3/ ACTIVE OCC 1 GEN OVER CURRENTWARNING 1/ INACTIVE OCC 1 0kPa0 rpm 23 C 24.8V2.1Hrs STOPPED AVG: 481 V60.2Hz 0.82 L-LLAGGING 324V TOTAL kW 216 48%

OR

OR

CONFIGURESECURITY SETPOINTSTIME DATE ENG OPERATE HRS

CONTROLAUTOMATIC START/STOP AVR DESIRED VOLTAGEGOV DESIRED ENG SPD

ENG MONITOR/PROTECTBATTERY VOLT MON CRACK/START CTRSENG COOL TEMP MON ENG OIL PRES MONENG SPEED MON SERVICE MAINT INTERVAL

EVENTSEVENT I/P FUNCTIONS EVENT O/P FUNCTIONSEVENT RESPONSE CFG EVENT SYSTEM

EVENT O/P FUNCTIONSEVENT INPUT # EVENT INPUT #2EVENT INPUT # EVENT INPUT #4EVENT INPUT # EVENT INPUT #

DIGITAL INPUTSINPUT # INPUT #2INPUT # INPUT #4INPUT # INPUT #6INPUT # INPUT #

RELAY OUTPUTSOUTPUT # OUTPUT #2OUTPUT # OUTPUT #4OUTPUT # OUTPUT #6OUTPUT # OUTPUT # DIGITAL SELECTORSDIGITAL SELECTOR # DIGITAL SELECTOR #2DIGITAL SELECTOR # DIGITAL SELECTOR #4DIGITAL SELECTOR # DIGITAL SELECTOR #6DIGITAL SELECTOR #

EVENTS O/P FUNCTIONEVENT OUTPUT #

EVENTS RESPONSE CFGDIAGNOSTIC CONFIG ENG PROTECT CONFIGGEN PROTECT CONFIG OTHER SYSTEM CONFIG

DIAGNOSTIC CONFIGPRESSURES TEMPERATURESLEVELS OTHERS

ENG PROTECT CONFIGPRESSURES TEMPERATURESLEVELS OTHERS

WARNING AUTO RESETENABLED STATUS ENABLED GEN MON/PROTECTGEN AC MONITOR GEN AC PWR MONITORGEN OVER CURRENT GEN OVER/UNDER FREQGEN OVER/UNDER VOLT

I/ODIGITAL INPUTS DIGITAL OUTPUTSRELAY OUTPUTS SPARE ANNALOG INPUT

NETWORKDATALINK - SCADA

DIGITAL OUTPUTSOUTPUT #

PROG TRIP POINTSPROG TRIP FUNC #

OTHERDIGITAL SELECTORS REDUCED PWR MODEPROG TRIP POINTS

CURRENT LEVEL = 2DROP TO MIN LEVEL ENTER LEVEL 1 OR 2ENTER LEVEL 3 CHANGE LEVEL 1 PWDCHANGE LEVEL 2 PWD CHANGE SCADA PWA

SETPOINTSCONTROL ENGINE MON/PROTECTEVENTS GEN MON/PROTECTI/O NETWORKOTHER

PREFERENCESCONTRAST PRESSURETEMPERATURE LANGUAGE

CONTROLSPEED ADJUST PROG CYCLE TIMER

ADJUST SPEED0.0 Hz

OUTPUT1 1234567 01-0--- OUTPUT1 101----

DIGITAL I/PRELAY O/P -2-4-----81---567- DIGITAL O/P 1

*2 OR *

USE

*1. To adjust settings use: 1. UP and DOWN Keys to select the submenu.

2. Use ENTER Key and UP, DOWN, LEFT, RIGHT Keys and then ENTER for the new settings to take effect. *2. Scroll down to see all events. Events are listed in the following order, Present, Active, Inactive. Only SHUTDOWN events can be reset; some events can be set as a SHUTDOWN. To reset an event, the control must be in STOP. All other events will become INACTIVE once the condition goes away. *3. To RESET: press ENTER to get to the details of the event and then ENTER again. *4. To get back to the MAIN MENU at any time, press or and When unsure about your location on the screen, use ESCAPE Key and then refer to this chart.

ESCAPE KEY

ENTER KEY

PowerWizard Technical Manual

4.2 Technical Operation

4.2.1 Engine Starting Sequence

1. The PowerWizard receives an engine start signal. The signal will be one of four:
   • The operator presses the run key
   • The control is in auto and the remote initiate digital input becomes active
   • The control receives a start command via the RS-485 SCADA Data Link (PowerWizard 2.0 only)
   • The control has a program cycle timer (PCT) configured that becomes active (PowerWizard 2.0 only).
2. The PowerWizard checks the system before beginning the cranking sequence. The PowerWizard checks that there are no shutdown events present and that all previous shutdown events have been reset.
3. If the engine is equipped with a form of start aid such as thermostart it will enter a prestart sequence.
4. The PowerWizard begins the crank sequence by activating the engine crank relay and the fuel control relay:
   • If the engine reaches the setpoint for crank terminate speed the engine is deemed running and the engine crank relay will be deactivated
   • If the engine fails to start within a preset duration (normally seven seconds) the PowerWizard will stop cranking and wait for a pre-set time (normally seven seconds) before attempting to start again
   • If the PowerWizard fails to start within a pre-set number of crank attempts (normally three) the PowerWizard will activate a “Fail to Start shutdown”.

4.2.2 Engine Stopping Sequence

1. The PowerWizard receives an engine stop signal. The signal will be one of four:
   • The operator presses the Stop key
   • The control is in auto and the remote initiate digital input becomes inactive
   • The control receives a stop command via the RS-485 SCADA Data Link (PowerWizard 2.0 only)
   • The control has a program cycle timer (PCT) configured that becomes inactive (PowerWizard 2.0 only).
2. The PowerWizard begins the cool down period. In order to bypass the cool down hold down the stop key for 3 seconds. The options “PRESS ENTER TO BYPASS” and “PRESS ESCAPE TO CONTINUE” will be shown on the display. Press the Enter key to bypass the cool down sequence or press the Escape key to continue the cool down sequence.
3. After the cool down cycle, the PowerWizard stops the engine by turning off the fuel control relay.

4.2.3 Event System

The PowerWizard module uses the J1939 standard format for events, whereby an event is defined as a combination of a suspect parameter number (SPN) and a failure mode identifier (FMI). The SPN defines what is at fault and the FMI defines how it is at fault (e.g. SPN = 100 = Oil Pressure, FMI = 1 = Low Shutdown would mean the set has shutdown on a low oil pressure fault). A list of SPN/FMI combinations can be found in appendix A.

PowerWizard modules have separate event logs for events raised by the module itself and those raised by ancillaries such as the engine ECM.

PowerWizard Technical Manual

4.2.7 Quick Event Resetting

In addition to the above procedure there is also a simplified process for resetting all events. To reset all events:

1. Press the Stop key.
2. Press and hold the Alarm Acknowledge key for three seconds.
3. Press Enter to reset all events, press Escape to cancel.

Note – the PowerWizard must be in stop mode to reset events. Note – present events cannot be reset.

4.3 Security

There are 3 levels of password protection on the PowerWizard control panel. All of the adjustable setpoints are associated with a specific level of security required to make an adjustment to the parameter. The passwords only affect changing setpoints within the control panel. Changing setpoints with the Service Tool does not require passwords.

The level of password protection that is required for each setpoint is identified on the parameter setpoint entry screen. A security level identification number “1”, “2” or “3” next to a padlock symbol is displayed on the parameter setpoint entry screen. A Level 3 security is used for the most secure setpoints and Level 1 security is used for the least secure setpoints. If the PowerWizard is currently at the required level of protection when viewing a parameter, the padlock will not appear.

If a parameter is displayed with a padlock but no security level identification number next to it, the parameter cannot be changed from the PowerWizard display and the service tool must be used. Level 1 and Level 2 passwords are disabled when shipped from the factory. Level 1 and Level 2 passwords are user level passwords and can be used if desired.

The PowerWizard 2.0 also has a SCADA password, which can be used to secure remote communications.

To view the security menu: MAIN MENU > CONFIGURE > SECURITY

At the top of the security menu the current security level is displayed. Within the security menu are the following options:

DROP TO MINIMUM LEVEL – used to return the current security level to the lowest level set-up. Highlight and press enter to drop to minimum security level. If no Level 1 or 2 passwords are set-up the minimum level will be 2. If a Level 2 password is set-up, the minimum level will be 1 and if a Level 1 password is set up the minimum level will be 0.

ENTER LEVEL 1 OR 2 – used to enter Level 1 or 2 passwords. Highlight and press enter to proceed to the password entry screen. Passwords can be entered using the cursor keys. In PowerWizard, Level 1 and 2 passwords must be different. An entered password is compared against the stored Level 1 and 2 passwords, if the password is correct the PowerWizard will go to the corresponding security level.

ENTER LEVEL 3 – used to obtain Level 3 access. The Level 3 security password is reserved for critical setpoints that should only be changed by a skilled operative. The Level 3 password is a prompt and response password.

Highlight and press enter to proceed to the phone in prompt display. The Level 3 password can be obtained by contacting the genset manufacturer and providing the 16 digit phone in prompt. The manufacturer will then provide the relevant response. To enter the 16 digit response press enter again. Passwords can be entered using the cursor keys. The Level 3 password will expire 10 minutes after the last key pressed.

The Level 3 password can be obtained from the After Sales Helpdesk. Refer to the contacts list at the back of the manual.

CHANGING LEVEL 1 PASSWORD – used to set-up, change or disable a Level 1 password. In order to use this feature the control must be at current security Level 1 or higher. Highlight and press Enter to proceed to the password entry screen. To set up or change the password, enter the new password using the cursor keys. Passwords may be 16 digits long. To disable the Level 1 security password, set the password to “0”. Press the Enter key to save.

PowerWizard Technical Manual

CHANGING LEVEL 2 PASSWORD – used to set up, change or disable a Level 2 password. In order to use this feature the control must be at current security Level 2 or higher. Highlight and press enter to proceed to the password entry screen. To set up or change the password, enter the new password using the cursor keys. Passwords may be 16 digits long. To disable the Level 2 security password, set the password to “0”. Press the Enter key to save.

CHANGING SCADA PASSWORD (PowerWizard 2.0 only) – used to set-up, change or disable a SCADA password. Highlight and press enter to proceed to the password entry screen. To set-up or change the password, enter the new password using the cursor keys. Passwords may be 16 digits long. To disable the SCADA security password, set the password to “0”. Press the Enter key to save.

4.4 Real Time Clock Programming (PowerWizard 2.0)

The real time clock provides information for the time and date of an automatic time based start/stop control. It also provides a mechanism for time stamps in the event log. The real time clock is not calibrated and is for information only. The date and time are set by the user.

1. In order to set the timeß or date format: MAIN MENU > CONFIGURE > TIME/DATE
2. To set the time, highlight the time then press the Enter key twice.
3. Use the cursor keys to set the time and press the Enter key to save. Press the Enter key to return.
4. To set the date, highlight the date then press the Enter key twice.
5. Use the cursor keys to set the date and press the Enter key to save. Press the Enter key to return.
6. To set the date format, highlight either the ‘FORMAT DD/MM/YY’ or ‘FORMAT MM/DD/YY’ and press the Enter key.
7. Use the cursor keys to select the required date format and press the Enter key to save.

4.5 Fuel Priming – Engines with Electronic Fuel Lift Pump

Certain engines fitted with an electronic fuel pump do not have a manual priming feature on the engine. In these circumstances the PowerWizard can be used to energise the fuel lift pump in order to prime the engine.

1. In order to prime the genset: MAIN MENU > CONTROL > ENGINE FUEL PRIMING
2. To prime the set press the right cursor key, this will initiate a 180 second priming cycle.
3. To exit the priming cycle press the left cursor key.

Note – The generating set may only be primed when the set is stopped and there are no active or present shutdown conditions.

4.6 Programmable Cycle Timer (PCT) (PowerWizard 2.0)

To utilise the Programmable Cycle Timer feature, one may require a software upgrade. To confirm if a software upgrade is required, please contact the after sales help desk. Refer to the contact list at the back of this manual.

The Programmable Cycle Timer (PCT) feature allows the operator to program times when two independent tasks, called PCT outputs, will be activated or deactivated automatically during the week.

This is useful for cases where two or more generating sets are required to automatically share the duty of supplying a load throughout the week. Using programmable cycle timer, each generating set can be programmed to start and stop at pre-set times. The cooperation of a transfer switch is required to ensure that the generating sets are not stopped on load.

PowerWizard Technical Manual

5 Installation

5.1 Power Requirements

The PowerWizard series of generating set controls require a nominal voltage of 12 Vdc or 24 Vdc. If batteries are used for operating power, a charging source such as an alternator or battery charger is necessary to maintain a stable supply voltage. Under steady state operation, the PowerWizard controllers on 12V sets have approximately an 850 m Amp current draw (not including any relay loads).

This current drain can be reduced by approximately a factor of 7 by using the Reduced Power Mode option (RPM). However it is recommended that generating sets at rest or storage for prolonged periods should have either the battery charger or isolator switch option fitted.

When connecting the PowerWizard generating set control to the DC power source, make sure that there is only one common connection to the negative potential of the power source. Make extra effort to avoid any ground loops in the DC electrical system. A single point common ground for electronics is recommended at the negative battery terminal or Power Distribution Box. Each electronics sub-system and major engine sub-system should have its own DC network so that they do not interfere with each other. An example is shown in Figure 7.

As shown in the figure all electronics are electrically isolated from higher current loads, such as the starter motor. All electronics have a common Power Bus and Single Point Reference. The chassis ground is a common Power and Transient Ground.

The electronics, such as sensors and control modules, have isolated power source paths. High current loads such as starters and solenoids can cause interference and possibly damage to low current loads, such as controllers and sensors. Extra effort must be made to keep the high current and low current loads electrically separated. The two types of loads may share common (+)Battery and (–)Battery connections, but they should not be electrically connected. This strategy ensures maximum isolation between high and low current loads.

Figure 7: Generating Set Network Isolation

The battery disconnect switch is located on the negative leg of the battery supply. If a battery charger is to be used, it should be connected on the battery side of the disconnect switch, so as not to power the electronics. Most battery chargers are not to be used as power supplies. Proper battery charger operation requires that the actual battery load is present.

Electronic Sub-system 3

Engine ECM

Electronic Power Bus

Battery

Starter

Generator Set Sub-system Loads

Electronic Sub-system 2

Electronic Sub-system 1

PowerWizard Technical Manual

5.2 Location Considerations

When selecting a location for mounting the PowerWizard generating set control, consider the following:

• Protection from high-voltage and high-current devices
• Protection from devices that may produce electromagnetic interference
• Protection from excessive vibration. The controls are designed to withstand normal generating set vibrations. The controls should not be mounted directly to the engine block
• Protection from direct exposure to water. Once installed, the PowerWizard 1.0 and 2.0 controls are sealed to a level of IP Level 22 for resistance to moisture
• The continuous operating range of the PowerWizard generating set controls is –20 to +70°C ambient.

5.3 Electrical Connections

The PowerWizard control has one 70-pin connector on the back of the control. Not all 70 pins are used. The following diagrams show what pins are used and what each pin should be connected to for each version of the control.

Figures 8 and 9 are shown with all possible connections used. For Electronic Engines (EUI), the passive analogue inputs number 1 and 2 will not be used. These are for oil pressure and coolant temperature respectively. On EUI engines, those sensors will be wired to the engine ECM and the PowerWizard will get that information from the engine ECM via the Primary J1939 Data Link.

The method used for the analogue inputs is 1-wire sensors as shown in the diagram.

The discrete inputs are shown connected through normally open contacts to battery negative. These inputs can also be connected through normally closed contacts to battery negative. In order to do this the active state of the input will need to be set to active high.