User Manual

Hawk Installation Guide Installation

MAN-HAWIG (Ver. 1.401)

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3.5. Integrating the Hawk on a PCB

The Hawk is designed to be mounted on a PCB, either by soldering its pins directly to the PCB

or by using suitable socket connectors. In both cases the rules in the following sub-sections

apply.

3.5.1. Traces

1. The size of the traces on the PCB (thickness and width) is determined by the current

carrying capacity required by the application.

 The rated continuous current limit (Ic) of the Hawk is the current used for sizing the

motor traces (M1, M2, M3 and PE) and power traces (VP+, PR and PE).

 For control, feedbacks and Inputs/outputs conductors the actual current is very small

but “generous” thickness and width of the conductors will contribute to a better

performance and lower interferences.

2. The traces should be as short as possible to minimize EMI and to minimize the heat

generated by the conductors.

3. The spacing between the high voltage conductors (VP+, PR, M1, M2, M3, VL) must be at

least:

 Surface layer: 1.5 mm

 Internal layer: 0.5 mm

Complying with the rules above will help satisfy UL safety standards, MIL-STD-275 and the IPC-

D-275 standard for non-coated conductors, operating at voltages lower than 200 VDC.

3.5.2. Grounds and Returns

The “Returns” of the Hawk are structured internally in a star configuration. The returns in each

functional block are listed below:

Functional Block Return Pin

Power PR (Power Return)

Internal Switch Mode P.S. PR (Power Return)

RS232 Communications RS232_COMRET (J1/3)

CAN Communications CAN_COMRET (J1/30)

Control section COMRET (J1/28)

Main Feedback SUPRET (J2/2)

Aux. Feedback SUPRET (J1/6)

Analog input ANLRET (J2/2)

The returns above are all shorted within the Hawk in a topology that results in optimum

performance.

1. When wiring the traces of the above functions, on the Integration Board, the Returns of

each function must be wired separately to its designated terminal on the Hawk. DO NOT