IRPT1058

page 7

Mounting, Hookup and Application Instructions

Mounting

1.

Remove all particles and grit from the heat sink and power

substrate.

2.

Spread a .004" to .005" layer of silicone grease on the heat

sink, covering the entire area that the power substrate will

occupy. Recommended heat sink flatners is .001 inch/inch and

Total Indicator Readout (TIR) of .003 inch below substrate

3.

Place the power substrate onto the heat sink with the

mounting holes aligned and press it firmly into the silicone

grease.

4.

Place the 2 M4 mounting screws through the PCB and

power module and into the heat sink and tighten the screws to 1

Nm torque.

Control Connections

All input and output control connections are made via a 16-

terminal female connector to J3.

Power Connections

Single-phase input connections are made to terminals R,S and

T (J1). Inverter output terminal connections are made to

terminals U,V and W (J2).

Power-Up Procedure

When single-phase input power is first switched on, PWM

inputs to the IRPT1059C must be inhibited (held high) until the

protection latch circuitry is reset. To reset this latch before

inverter start-up, RESET pin on J3 connector must be pulled

down low for at least 2

µsec. This will set the Fault feedback

signal on J3 high. Now, the PWM input signals can be applied

for inverter start-up.

Power-Down Procedure

The following sequence is recommended for normal power

down:

1. reduce motor speed by PWM control

2. inhibit PWM inputs

3. disconnect main power.

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Figure 7a. Control Signal Connector

Figure 7b. Input and Output Terminal Blocks

Figure 6. Power Module Mounting Screw Sequence