MMAANNUUAALL
DIGITAL INSTRUMENTATION
1.0 Technical Specifications
1.1 Electrical
Power Requirements
Auto-ranging - 12V to 80V DC ± 25% (9V to 100V DC).
Operating Current
Total system current entering the V+ pin is a function of system voltage, LED alert/warning icons, backlight, LCD heater and sender loads.
The table below illustrates the typical and maximum operating current
for a panel with a V+ voltage of 12V with the sender inputs left as
open circuit. The LCD heater circuit typically consumes 310mA when
active. The backlight circuit typically consumes 30mA. For higher
V+ voltages the operating current is reduced accordingly.
enGage™IV Operating Current (mA)
Without Backlight With Backlight With LCD Heater on
V+ Typ. Max Typ. Max Typ. Max
12.0 30 40 60 70 370 380
Operating currents for V+ of 24, 36, 48, 60, 72 and 80 VDC are lower than this listing.
1.2 Mechanical
Size and Weight
Item Enclosed Unit (T) PCB & LCD Module Only (P)
Bezel H x W 120 x 180 mm N / A
Case H x W 91.8 mm x 137.8 mm 82.6 mm x 128.5 mm
Depth 53.5 mm 38.8 mm
Weight 400 g max 200 g max
Display
Dot Matrix LCD (128 X 240 pixels), Backlit
Curtis enGage™ IV Manual
page 1
Hour Meter Range & Resolution
Hour Meter: 99,999.9 Total Hours, 0.1 hours resolution.
Maintenance Monitor: 999 Total Hours (countdown), 1 hour resolution
Panel Cutout
92 (+ 0.8/-0.0) mm x 138 (+1.0/-0.0) mm
1.3 Environmental
Operating Temperature Range: -40°C to +70°C
Storage Temperature Range: -50°C to +90°C as per SAE J1455,
section 4.1.1.5.
Thermal Cycling As per SAE J1455 section 4.1.3.1.
(Applicable To Enclosed Units Only): to +80°C
Thermal Shock As per SAE J1455 section 4.1.3.2.
(Applicable To Enclosed Units Only): to +80°C
Humidity 95% RH (non-condensing) at +38°C
(Applicable To Enclosed Units Only): as per SAE J1455, section 4.2.3.
Shock SAE J 1378 March 83. Amplitude
(Applicable To Enclosed Units Only): 44 - 55g, half sine, 9-13 ms duration.
Vibration SAE J 1378 March 83. Double
(Applicable To Enclosed Units Only): amplitude of 1.53 mm with
frequency sweep from 10-80-10 Hz
(20 g max.) at intervals of 1 minute.
IP Ratings Face sealed to IP65.
(Applicable To Enclosed Units Only): Rear seal Sealed to IP40.
Curtis enGage™ IV Manual
page 2
2.0 Installation
2.1 Terminal Assignments – Main connector (J1)
Curtis enGage™ IV Manual
page 3
Pin# Function
1 Battery V +
2 Common
3 Sender1 input (R, V, I)
4 Sender2 input (R, V, I)
5 Sender3 input (R, V, I, Frequency*)
6 Sender4 input (R, V, I, Frequency**)
7 Switched Input 1
8 Switched Input 2
9 Switched Input 3
10 Switched Input 4
11 Switched Input 5
12 Switched Input 6
13 Keyswitch Input
14 MOSFET output 1
15 MOSFET output 2
16 MOSFET output 3
17 Range Select V + (BDI
see table in Section 3.0)
18 n/c
19 LCD Heater V +
20 Dimming Control
*Speedometer, Odometer
**Tachometer
Note: Sender 1, 2, 3 and 4 inputs are limited to 60V max. Voltages beyond
that, will damage the instrument.
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