Enfo IV
Contents …………………………………………………. 1
Overview …………………………………………………. 2
Operation …………………………………………………. 3
Installation and
wiring
Specifications …………………………………………………. 9
Menu …………………………………………………. 10
…………………………………………………. 7
Enfo IV (109050) 090303 – 1 – Class 1
The Enfo IV is an engine-monitoring device that reads and displays engine
temperature, engine RPM, and engine oil pressure as it is transmitted from the
engine ECU via the SAE J1939 CAN bus. Vehicle voltage is also displayed but is
independent of CAN operation.
The Enfo IV can be used on both 12 and 24 Volt systems. The Enfo IV uses an
automatic voltage detection system to determine the low voltage point for alarm
activation.
The Enfo IV can be connected to an external alarm and external alarm-silence
switch. High engine temperature (250° F), low oil pressure (10 PSI), or low voltage
(11.9V or 23.8V) will cause the Enfo IV to activate the external alarm.
Enfo IV C1 – PN 108661
Colored corner tags
Beige C1 – PN 106669
Black C1 – PN 106030
Blue C1 – PN 106023
Brown C1 – PN 106025
Burgundy C1 – PN 106667
Gray C1 – PN 106668
Green C1 – PN 106022
Lime C1 – PN 106670
Light Blue C1 – PN 106671
Orange C1 – PN 106028
Pink C1 – PN 106024
Purple C1 – PN 106666
Red C1 – PN 106029
Rust C1 – PN 106027
Silver C1 – PN 106026
White C1 – PN 106665
Yellow C1 – PN 106664
10ft Connection harness C1 – PN 110346
Enfo IV (109050) 090303 – 2 – Class 1
INITIALIZATION
1. A normal initialization of the
Enfo IV will light all LED
segments to verify that all
displays are operational.
2. The Enfo IV then displays the
software revision number.
3. The Enfo IV then checks for
valid CAN communication and
checks the voltage range.
Indication of CAN valid and 12V
ignition system detected
Indication of CAN invalid and 24V
ignition system detected Æ
Æ
Enfo IV (109050) 090303 – 3 – Class 1
4. The unit will then start normal
operation.
If CAN information is not present the
Engine RPM, Oil pressure, and
Engine temp displays will flash the
CAN ERR message.
If CAN information is not present for a
specific display, that display will show
dashes.
Enfo IV (109050) 090303 – 4 – Class 1
Engine RPM Display
The Engine RPM data is received from the engine ECU via CAN (PGN 61444,
EEC1).
Engine Oil Pressure Display
The Engine Oil Pressure data is received from the engine ECU via CAN (PGN
65263, EFLP1).
The ENFO IV will activate the alarm if the pressure drops to 10 PSI or lower.
When the pressure is low the display will alternately show the current pressure
and “LO”.
Engine Water Temperature Display
The Engine Water Temperature data is received from the engine ECU via CAN
(PGN 65262, ET1).
The ENFO IV will activate the alarm if the temperature reaches 250 degrees F or
higher.
When the Temperature is high the display will alternately show the current
temperature and “HI”.
Vehicle Voltage Display
The Voltage is derived from the main input Power and Ground pins and is
independent of CAN messages. Voltage is displayed with 0.1V resolution.
The ENFO IV will activate the alarm if the voltage falls to 11.9V and below (12V
ignition), or 23.8V and below (24V ignition). The voltage level must stay at the
low voltage range for a minimum of 2 seconds to activate the alarm.
When the voltage is low the display will alternately show the current voltage and
“LO”.
Enfo IV (109050) 090303 – 5 – Class 1
ALARM
The Enfo IV can be connected to an external alarm (250mA max.) and alarm
silence switch. When the Enfo IV activates the alarm it will remain on until the
alarm condition is no longer present or the alarm silence button has been
pressed. The alarm will remain OFF for 5 minutes after the alarm silence button
was activated at which time the alarm will again activate (if the alarm condition
still exists).
Enfo IV (109050) 090303 – 6 – Class 1
Mounting Dimensions
Enfo IV The display requires a cutout as shown. The unit is water tight and may
be mounted in any location on the operator’s panel.
Mounting dimensions.
Enfo IV (109050) 090303 – 7 – Class 1
Wiring Installation
Amp connector: 776286-1 Class1 PN: 106297
Amp pins: 770520-1 Class1 PN: 106298
1 CAN High Data SAE J1939 (HI) INPUT/OUTPUT
2 CAN Low Data SAE J1939 (LO) INPUT/OUTPUT
3 CAN Shield Shield
4 System Power +10 … 32V DC INPUT
5 System Ground Ground INPUT
6 Alarm Silence Ground INPUT
7 Audible Alarm Power OUTPUT
8 Audible Alarm Ground OUTPUT
Enfo IV (109050) 090303 – 8 – Class 1
Parameter Value Unit
Input voltage
Current nominal:
@ 27.6VDC 115 mA
@ 13.8VDC 184 mA
Operating temperature
Alarm current maximum
10 to 32 VDC
-40 to 85
250 mA
°C
Enfo IV (109050) 090303 – 9 – Class 1
Entering the menu
The Enfo IV’s alarm silence button is used to enter the menu. Press and hold the
alarm silence button for 5 seconds. The Engine RPM display will show “SEL”,
the Oil Pressure display will show “----“, and the Engine Temp display will show
the “time remaining” counter which will begin counting down seconds starting at
5.
Press the alarm silence button to scroll through the menu items. When the
desired menu item is shown allow the “time remaining” counter to reach zero.
Each time the alarm silence button is pressed the “time remaining” counter will
be reset to 5.
Menu Items
“----“ Exit the menu.
“TEST” Turns on all of the display segments and activates the
alarm.
“BATT” View the auto-selected voltage range.
“ALAR” View all of the alarm trip points (they will be displayed
in their associated window).
Enfo IV (109050) 090303 – 10 – Class 1
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