ElmoMC SimplIQ Digital Servo Drives-Whistle Installation Guide User Manual
Page 23
Whistle and Tweeter Installation Guide
Installation
MAN-WHTWIG (Ver. 1.604)
23
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 Whistle or
Tweeter. DO NOT USE A COMMON GROUND PLANE. Shorting the commons on the
Integration Board may cause performance degradation (ground loops, etc.).
2.
Inputs: The 6 inputs are optically isolated from the other parts of the Whistle and Tweeter.
All 6 inputs share a single common “Return” (INRET - J1/15). To retain isolation, the Input
Return pin, as well as other conductors on the input circuit, must be laid out separately.
3.
Outputs: The 2 outputs are optically isolated from the other parts of the Whistle and
Tweeter. Each output has a separate floating return (OUTRET1 - J1/17 for output 1 and
OUTRET2 J1/16 for output 2). To retain isolation, the Output Return pins, as well as other
conductors on the output circuit, must lay out separately.
4.
Return Traces: The return traces should be as large as possible, but without shorting each
other, and with minimal cross-overs.
5.
Main Power Supply and Motor Traces: The power traces must be kept as far away as
possible from the feedback, control and communication traces.
6.
PE Terminal: The PE terminal is connected directly to the Whistle’s heatsink or to the
Tweeter's 2 PE strips on its lower board. In the Whistle, the heatsink serves as an EMI
common plane. The PE terminal should be connected to the system’s Protective Earth. Any
other metallic parts (such as the chassis) of the assembly should be connected to the
Protective Earth as well.