Elmo ExtrIQ line Guía de instalación descargar pdf (Pagina 24)

Hornet and Bee Installation Guide Installation

MAN-HRBEIG (Ver. 1.3)

www.elmomc.com

3.5. Integrating the Hornet or Bee on a PCB

The Hornet and Bee are designed to be mounted on a PCB, either by soldering the pins directly

to the PCB or by using suitable socket connectors. In both cases the following rules 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 Hornet and Bee 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 Input/output conductors the actual current is very small but

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

performance and lower interference.

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: 0.10 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 100 VDC and at

“unlimited altitudes” (above 10,000 meters or 30,000 feet).

3.5.2. Grounds and Returns

The “Returns” of the Hornet and Bee 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 (J1/20)

Control section Internal, not accessible

Main Feedback SUPRET (J2/2)

Aux. Feedback SUPRET (J1/4)

Analog input ANLRET (J2/2)

The returns above are all shorted within the Hornet or Bee in a topology that results in

optimum performance.

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Elmo ExtrIQ line Guía de instalación Pagina 24