ElmoMC Gold Line Digital Servo Drives-Gold Whistle User Manual
Page 33
Gold Whistle Installation Guide
Installation
MAN-G-WHIIG (Ver. 1.208)
33
NOT USE A COMMON GROUND PLANE. Shorting the commons on the Integration Board
may cause performance degradation (ground loops, etc).
2.
Digital Inputs: The six digital inputs are optically isolated from the other parts of the Gold
Whistle. All six inputs share one return line, INRET. To retain isolation, the Input Return pin
and all other conductors on the input circuit must be laid out separately.
3.
STO: The two digital STO inputs are optically isolated from the other parts of the Gold
Whistle, and share one return line, STO_RET. To retain isolation, the Input Return pin and
all other conductors on the input circuit must be laid out separately
4.
Digital Outputs: The two digital outputs are optically isolated from the other parts of the
Gold Whistle. To retain isolation, all the output circuit conductors must be laid out
separately.
5.
Return Traces: The return traces should be as large as possible, but without shorting each
other, and with minimal cross-overs.
6.
Main Power Supply and Motor Traces: The power traces must be kept as far away as
possible from the feedback, control and communication traces.
7.
PE Terminal: The PE (Protective Earth) terminal is connected directly to the Gold Whistle’s
heat-sink which 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.
8.
Under normal operating conditions, the PE trace carries no current. The only time these
traces carry current is under abnormal conditions (such as when the device has become a
potential shock or fire hazard while conducting external EMI interferences directly to
ground). When connected properly the PE trace prevents these hazards from affecting the
drive.