Motec PDM30 User Manual download pdf (Page 9)

6 Installation

Output Wiring

All outputs are high side type outputs; they switch Batt+ to the output pin.

They all have hardware thermal overload protection, fault logic and over-

current logic.

Paralleled Outputs

Two or more output pins can be connected in parallel to increase current

capacity. Outputs that are connected in parallel must all be of the same type;

either all 8 Amp or all 20 Amp outputs.

Wire Gauges

The wire gauge must be chosen to suit the current consumed by the

connected device and to ensure that the voltage drop is acceptable. On long

runs it may be necessary to use a heavier gauge wire to minimise voltage

drop.

The wire gauge must also be compatible with the connector pin; using a

smaller than recommended wire gauge may result in a poor crimp.

Suitable wire gauges are 24# to 20# for the 8 Amp outputs and 20# to 16# for

the 20 Amp outputs. See Wiring for details.

Output Devices

Windscreen Wipers

The PDM can drive windscreen wiper motors; however the PDM cannot be

connected to both the fast and slow motor windings at the same time. The

voltage generated by the slow winding during fast operation will cause braking

of the motor and possible damage to the PDM.

A wiper unit can be wired in a number of ways. The following schematics are

shown for 'common-ground' wiper units. For 'common-positive' wiper units the

schematics must be adjusted accordingly.

1. OEM Controller Method

PDM

Park

Switch

Home

OEM

controller

Control

Switches

Output

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 60 61

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Motec PDM30 User Manual Page 9