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Haltech NEXUS PD16 Quick Start Manual page 7

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NEXUS PD16 WIRING
Example 25A HCO Wiring Connections
8A High Current Outputs (8A HCO)
The Nexus PD16 features 10 high side outputs
25A HCO
capable of driving 8A to 12V. Each output has a
software programmable fuse current.
Once the electronic fuse blows the output turns
off for a software programmable delay duration,
before reactivating the output.
Specs:
Use the NSP software to define the maximum
number of retries before the output is deactivated
• Automatic overcurrent protection
until the next power cycle. The PD16 LEDs display
• Flyback protected
the output state.
• 0 to 30V voltage feedback
• High side current feedback
8A HCOs are PWM capable and can be used
• 100Hz max switching speed
to power CAN devices or solenoids as well as
transmission shift solenoids, water pumps, etc.
• Capable of 0-100% duty cycle
Example 8A HCO Wiring Connections
8A HCO
GROUND
THERMOFAN
TO GROUND
25A High Current Outputs
The four high/low outputs on the Nexus PD16
are capable of sinking 25A to ground and driving
25A to 12V. Each output has a programmable fuse
current, slow-start current and duration.
Once the electronic fuse blows the output turns
off for a pre-programmed delay duration before
reactivating the output. The PD16 LEDs display the
output state.
25A HCOs are PWM capable and can be used for
ignition power and injector power as well as to
PWM thermofans and fuel pumps etc.
Specs:
• Automatic overcurrent protection
• Flyback protected
• 0 to 30V voltage feedback
• High side current feedback
• 1kHz max switching speed
ELECTRIC WATER PUMP
• Capable of 0-100% duty cycle
12
Analog Voltage Inputs (AVI)
Analog Voltage Inputs accept variable voltage
Pull-up resistors are generally enabled for
temperature related sensors and switched
signals from 0V to +5V such as signals from
to ground inputs. The following configuration
pressure, temperature and fuel level sensors.
requires the pull-up resistor be enabled.
NOTE: AVI-1 has 1k or 240Ω pull up options for
These inputs can also accept switched inputs that
fuel level sensors.
change between two different voltage levels.
The On Voltage and Off Voltage define what the
AVI
AVI
thresholds are between the on and off states.
SIGNAL
SIGNAL
The voltage can be viewed as a channel in NSP to
GROUND
determine the thresholds for a switched input.
GROUND
Common examples of switched inputs include A/C
Request switch and intercooler spray switch.
AVIs have a software selectable 1K pull-up
resistor to 5V, which can be enabled or disabled
within the Setup page.
Pull-up resistors are generally enabled for
AVI
temperature related sensors and switched to
AVI
ground inputs.
SIGNAL
SIGNAL
GROUND
GROUND
Specs:
SENSOR
SENSOR
• 0 to 5V
+5V
+5V
• 100 samples per second
• Selectable 1k pull-up to 5V
• -10 to 30V indefinite withstand
Sensors with a +5V supply do not require the pull-up
resistor be enabled, for example, rotary trim modules.
• 1.5kHz signal frequency max
Any Sensor +5V pin can be used with any Signal Ground
• AVI-1 has a switchable 240Ω pull up that allows
pin for sensors.
direct connection with fuel level sender input.
For in-depth product overviews,
step-by-step set up guides, software
walk-throughs and tech tips go to
the Haltech YouTube channel.
SCAN ME 
TEMPERATURE
TEMPERATURE
SENSOR
SENSOR
ROTARY TRIM MODULE
ROTARY TRIM MODULE
HT-010504
HT-010504
13

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