Motec Systems PDM32 User manual

USER MANUAL
PDM
Power Distribution Modules

MoTeC PDM User Manual
Contents
Introduction........................................................................1
Features...................................................................................................1
System Overview.....................................................................................2
Installation.......................................................................... 3
Mounting..................................................................................................3
Wiring.......................................................................................................4
Battery Positive .............................................................................4
Battery Negative............................................................................5
CAN Wiring....................................................................................5
Input Wiring..............................................................................................5
Output Wiring...........................................................................................6
Output Devices........................................................................................6
Windscreen Wipers.......................................................................6
Solenoids.....................................................................................10
Electronic Devices.......................................................................11
PDM Manager Software Installation......................................................12
Configuration....................................................................14
Configuration File ..................................................................................14
Channels................................................................................................15
Configuration Tree.................................................................................16
Global Setup................................................................................16
Input Pins.....................................................................................17
CAN Inputs..................................................................................18
CAN Output.................................................................................19
Functions.....................................................................................20
Output Pins..................................................................................21
CAN Keypads..............................................................................26
Operation.......................................................................... 27
CAN Bus Bitrate..........................................................................27
Sending and Retrieving Configuration Files................................27
Checking Operation.....................................................................27
Serial Number .............................................................................28
Firmware Versions and Updating................................................28
Password Protection ...................................................................29

PDM User Manual
Standby Mode........................................................................................29
Appendices.......................................................................30
Specifications.........................................................................................30
CAN Input Channel Examples...............................................................32
Fuse Characteristics..............................................................................34
Connectors and Pinout..........................................................................35
PDM16.........................................................................................35
PDM32.........................................................................................36
PDM15.........................................................................................38
PDM30.........................................................................................39
Mounting Dimensions............................................................................40
PDM16.........................................................................................40
PDM32.........................................................................................41
PDM15 and PDM30 ....................................................................42
Wiring.....................................................................................................43
Wire Specification........................................................................43
UTC Wiring for PC Connection ...................................................44
CAN Bus Wiring Requirements...................................................44
CAN Output Messages..........................................................................46
Windows Keyboard Shortcuts ...............................................................52
Glossary.................................................................................................56

MoTeC PDM User Manual
Copyright ©2014 – MoTeC Pty Ltd
The information in this document is subject to change without notice.
While every effort is taken to ensure correctness, no responsibility will be taken for the
consequences of any inaccuracies or omissions in this manual.
PN 63029 V3.3, February 2014

MoTeC Introduction 1
Introduction
The PDMs replace conventional relays, fuses and circuit breakers by
providing electronically switched power to the various electrical systems in the
vehicle, including motors, lamps, ECUs and data systems. This simplifies
wiring and switch requirements, while increasing reliability.
There are four PDM versions: PDM16, PDM32, PDM15 and PDM30.
Throughout this manual all versions will be referred to as the PDM except
where details specific to a particular version are discussed.
Features
PDM16 PDM32 PDM15 PDM30
Inputs 12 23 16 16
8 Amp Outputs 8 24 7 22
20 Amp Outputs 8 8 8 8
Connectors Autosport Waterproof connectors
M6 stud
Case size
Length
Width
Height
130 mm
60 mm
28 mm
180 mm
60 mm
28 mm
107 mm
133 mm
39 mm
107 mm
133 mm
39 mm
•Each output is over-current, short circuit and thermal overload protected
•Outputs are programmable in 1 A steps
•Outputs are controllable via a combination of switch inputs, CAN
messages and logic functions
•Switch inputs are ranging from 0 to 51 V, resolution 0.2 V
•Performing up to 200 logic operations using operators like Flash, Pulse,
Set/Reset, Hysteresis, Toggle, And, Or, Less than, Greater than, Not equal
to, Equal to, True, False etc.
•Performing functions such as flashing indicator lights and controlling
thermo fans and fuel pumps
•Using logic functions to selectively turn off systems during low battery
voltage or engine starting, reducing drain on the battery

2 Introduction
•Providing full diagnostic information, including output currents and
voltages, input voltages, and error status
•Transmitting diagnostic information via CAN to a display or data logging
device or monitoring directly on a PC
•Protected against unauthorised access by a password feature.
Accessories
•MoTeC UTC (USB to CAN adaptor) #61059
(Note: PDMs are not compatible with MoTeC CAN cable)
System Overview

MoTeC Installation 3
Installation
Mounting
When mounting the PDM take into account that the PDM may get very hot
during operation.
Ensure the PDM is mounted in a well ventilated area and not against a hot
surface. For case dimensions see Mounting Dimensions.
The internal temperature is highly dependent on ambient temperature and
also on the total load current—a higher current will cause a higher
temperature.
Tip: The internal temperature can be checked in PDM Manager (see
Operation) or transmitted via CAN to be logged. Allow for sufficient time
for the temperature to stabilise. This may take 30 minutes or more.
If the internal temperature of the PDM exceeds the specified maximum values
(see Specifications), cooling may be achieved by one or more of the following:
•relocating the PDM to a cooler mounting position
•increasing air circulation around the PDM case
•ducting cool air over the PDM case
•fitting a heatsink to the back surface of the PDM case

4 Installation
Wiring
Battery Positive
Battery positive is supplied to the PDM via the single pin connector to suit wire
sizes 16 mm2(6#) or 25 mm2(4#).
The PDM16 and PDM32 use an Autosport connector, PDM15 and PDM30
use a 6 mm eyelet to suit the wire size.
The wire gauge should be chosen according to the wire temperature limit and
acceptable voltage drop. Tefzel wire must not exceed 150 °C.
The temperature of the wire is affected by the ambient temperature, air
circulation, current, wire gauge, the temperature of any surrounding wires and
the covering sheath.
See Wire Specification and Connectors and Pinout for details.
Battery Isolator Switch
Battery positive must generally be connected via an isolator switch or relay.
The isolator must isolate the battery from all devices in the vehicle including
the PDM, starter motor and alternator. The isolator must be rated to handle
the starter motor current.
When the battery is isolated, the engine may continue to run due to power
supplied by the alternator. To avoid this, the isolator switch should have a
secondary switch that is connected to a shutdown input on the ECU.

MoTeC Installation 5
If the ECU does not have a shutdown input, the switch can be connected to a
PDM input. The PDM can then turn off power to the ignition system or the
ECU, which will cause the engine to stop.
Battery Negative
Both of the Batt–pins should be wired to battery negative via 20# wire.
These pins normally only carry the very low operating current, however during
a load dump they carry the load dump current which may be 50 ampere or
higher.
CAN Wiring
The PDM communicates over CAN with other devices connected to the same
CAN bus. The CAN bus must be wired according to CAN Bus Wiring
Requirements.
The PC also communicates to the PDM via the CAN bus. See Connecting the
PDM to a PC.
Input Wiring
The PDM Switch Inputs are intended for use with a switch that is directly
wired between a PDM input pin and a PDM 0 V pin. Each input has an
internal 10 kilo-ohm pull-up resistor to Batt+.
If it is required to connect a switch that is wired to another system in the
vehicle, ensure that the voltage levels are set appropriately as there may be
ground voltage variations between devices.
Tip: If standby current is important, wire the switches so that they are
normally open during standby. This will reduce the standby current.
Input Switch Connected to Battery
When an input is driven from a device that switches to battery, the switch
should if possible, be rearranged so that it switches to 0 V.
If the signal comes from an electronic device such as an ECU that has an
output that can only switch to battery (e.g. a signal that indicates when to turn
the fuel pump on), this might not be possible. In this case an external pull-
down resistor is required. The resistor should be 1500 ohm 0.25 watt and
should be connected between the input pin and the 0 V pin.
The input trigger levels should be set to 4 V and 5 V to guarantee correct
triggering for all possible battery voltages.