Using the BCIM Controller with Powerex IPMs

Introduction:

Using this board along with Powerex IPM design kits allows designers to be able to quickly

verify their Power circuit layout and also gives them an opportunity to see a working control

The information in this document pertains only to the board and its external connections. For

BCIM Connections:

The BCIM controller board has three connectors, CN1, CN2 and CN3. CN2 is a 2-pin connector

that brings in an 8-24V DC power supply and converts it to a regulated 5V supply for the control

connector is also used for bringing the fault feedback to the controller. CN3 is connector that

brings in a divided DC bus voltage for feedback into the MC3PHAC MCU.

First Release Februar

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Connecting the BCIM to L-series IPM development kits:

The 10-pin connector on the BCIM is made to connect directly to the 10-pin connectors used in

the BP6A and BP7A L-series IPM development kits through 10 conductors. Again, this will

in Figure 2.

Setting the 6-Position DIP-Switch:

using either active high or

Figure 2: BCIM to DK-PS21XXX

active low control logic.

It is important that only one of the first four positions is in the ON state at any time to prevent

The L-series IPM development boards are designed to bring active low logic to the IPMs control

control pins and therefore either position 1 or position 3 should be ON. In this case position 1 is

for a 60Hz motor while position 3 is used for 50Hz motors.

OFF will start or stop the motor respectively. Position 6 works in the same manner where ON is

value or rotated counterclockwise to decrease their value.

acceleration rate can be adjusted to a value between 0.5 and 128 Hz/s.

feedback.

The fault feedback is set up on the board to be active low. If low level logic comes back to the

BCIM board because one of the IPMs protection functions have been activated the PWM signals

The bus voltage feedback control is monitored from pin 2 to pin 3 of CN3. The nominal voltage

Any voltage reading outside of 1.75V minimum and 4.47V maximum constitutes a fault

condition and the PWM signals are disabled. Once the voltage returns to an acceptable value the

fault retry timer starts and PWM is re-enabled once the programmed timeout value is reached.

moderated to control the bus voltage. If bus voltage monitoring is not desired it must be disabled

Figure 4. Component Layout:

Item Description Manufacturer Man PN Digikey PN

Table 2 lists additional application notes for development boards designed for use with the

BCIM. Clicking on the application note name will bring up the associated pdf document. The

well as information about associated accessory products.