The PDM28 is the newest PDM (Power Distribution Module) from Hardwire Electronics, the product of over 3 years of development and testing. 
 
A PDM is a device used to replace conventional relays and fuses in a vehicle electrical system. The Hardwire Electronics PDM28 takes inputs from physical switches, analogue voltages, or the CAN bus, and provides power to different electronic devices such as radiator fans, fuel pumps and head lights. The current being drawn from each connected device is continuously monitored. If the measured current is too high due to a fault, the PDM switches off the respective output to prevent further damage to the wiring loom or the connected device. The PDM can then retry the output to see if the fault has cleared.
 
Product Details
Included
PDM28
2x DTM Connectors + Contacts
2x DT Connectors + Contacts
1x DTP Connector + Contacts
2x Radlok Connectors
USB Flash Drive with Pro PDM Configurator Software and Instruction preloaded
2m USB Cable
Printed A4 instruction manual
 
 
Technical Specification
General
 
Size
318x124x58 mm
Weight
1640g
Operating Temperature
-55 – 90C  [ -67 – 194 °F ]
Construction
Machined Aluminium Enclosure, Media Blasted and Anodised Black
IP Rating
IP67 Water and Dust Ingress Protection
Connectors
2x 12-Pin DTM, 2x 12-Pin DT, 1x 4-Pin DTP
Indicator LEDs
50x RGB LEDs
Inputs
 
Type
16 analogue inputs which can also serve as digital inputs.
Measurement Range
Each input can measure voltages between 0-28V, independent of the battery voltage.
Measurement resolution
16-bit or 0.001V
Frequency Measurement
Automatic frequency measurement up to 300Hz
Protection
Fully protected for input voltages between  -24V to 40V.
Pull Up/Down Resistors
Each input has a software selectable 10K Pull-up or Pull-down resistor
Added Features
Configure as active high or low. Configurable Hysteresis voltage. Latching or momentary operation.
Outputs
 
Type
4 high/low side outputs 100A peak, 30A continuous (Pin-limited to 25A @125degC), with reverse current protection.
6 high/low side outputs 80A peak, 20A continuous (Pin-limited to 13A @125degC), with reverse current protection.
18 high/low side outputs 80A peak, 20A continuous (Pin-limited to 13A @125degC)
Combined
200A combined output maximum current
Output current control steps
100mA
Protection
Each output is overcurrent, overtemperature, load dump and reverse polarity protected.
Soft Start
PWM soft start can be enabled on outputs to limit inrush current.
PWM
Each output can be Pulse Width Modulated based on a user defined variable. This can limit the speed of radiator fans, fuel pumps, and dim lights.
1000Hz maximum PWM frequency
Added Features
Outputs can be configured to stay on for a specified time after the input is removed, useful for thermo-fans.
Outputs can be retried multiple times after an over-current event is detected.
LIN Bus
 
 
1x LIN Bus Port. 
CAN Bus
 
Interface
3x CAN2.0A/B ports  (Bus 3 reserved for NIO Power Module Expansion)
Bus Speed
50, 100, 125, 250, 500, 1000 kbps
Termination Resistor
Both CAN bus ports have software selectable CAN termination resistors.
Input Stream
100x inputs, fully customisable variable parsing with bit masking, math functions, and compound CAN message filtering
Output Stream
100x Outputs, Fully customisable CAN frame construction with math functions