Power Module Mounting and Hook-up Instructions

1.

Remove all particles and grit from the heatsink and power substrate

2.

Spread a thin layer of silicone grease on the heatsink, covering the entire area that the power substrate will occupy

3.

Place the power substrate onto the heatsink with the mounting holes aligned and press firmly into the grease

4.

Place the 2XM4 mounting screws and tighten to 1NM torque

External Connections

All input and output control connections are made via a 16-terminal single in line connector J6. Three phase input connections

are made to terminals R,S and T of J1. Inverter output terminal connections are made to terminals U,V and W of J7. Positive

DC Bus and brake IGBT collector connections are available on terminals P and BR respectively of J5. An external power

resistor may be connected between P and BR to dissipate braking energy.

Power-Up Procedure

Upon application of 3-phase input power, PWM inputs must be held high until the protection latch circuitry is reset. To reset

this latch before inverter start-up, RESET pin on J6 connector must be pulled down low for at least 2usec. This will set the

Fault feedback signal on J6 high. PWM input signals may then be actively driven.

2

1

IRMDAC3

Reference Design Data Sheet (October 1998)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

J6

VDD +5V

VCC +15V

N [DC bus (-) ]

IN1

IN2

IN3

IN4

IN5

IN6

FAULT

IFB

VFB

RESET

NC

IN7

STOP

1

2

3

J1

1

2

3

J7

R

S

T

U

V

W

1

2

J5

BR

P

Figure 4 Signal Connector

Figure 6 Power Module Mounting Screw Sequence

Figure 5 Power Terminal Blocks