User manual

Introduction to the PICDEM MC LV Development Board

1.5.1 Power Connector (J20)

The power connector (J20) has the facility to connect 3 different types of connectors.

A barrel connector is mounted on the board when it is shipped. If necessary, the user

can replace it with a standard DIN connector or a screw terminal with a 5 mm pitch.

A 24V DC power supply is connected to J20. Use the recommended power supply

listed as an accessory (Part Number AC002013) on the Microchip web site

(www.microchip.com), or equivalent power supply of your own.

1.5.2 Motor Connector (J9)

The motor connector (J9) has 11 terminals. Table 1-1 shows the functionality of each

terminal.

TABLE 1-1: TERMINAL FUNCTIONALITY

1.5.3 ICD 2 Connector (J6)

This RJ11 connector is used for programming the part or debugging the firmware using

MPLAB

ICD 2. Application-specific functionalities can be added to the existing

firmware that is supplied with the board.

1.5.4 Serial Interface (RS-232) Connector (J1)

This connector is used for serial communication, based on the RS-232 protocol, with

the external world. When using the PC-based MC-GUI, this connector is used to

connect the PC and the board through the RS-232 cable.

Terminal Function Special Comments

M1 Motor Winding 1 Connection

M2 Motor Winding 2 Connection

M3 Motor Winding 3 Connection

G Motor Ground

HA Hall Sensor 1 Connection

NOT

used for sensorless control

HB Hall Sensor 2 Connection

NOT

used for sensorless control

HC Hall Sensor 3 Connection

NOT

used for sensorless control

+5V Hall Sensor Power

NOT

used for sensorless control

GND Hall Sensor Power Return

NOT

used for sensorless control

+ Positive DC Bus See Section 2.3.1 “Controller Sockets”

– Negative DC Bus See Section 2.3.1 “Controller Sockets”