Elmo Computer Hardware 1.1 Benutzerhandbuch
2. Inputs: The 6 inputs are optically isolated from the other parts of the Guitar. Each input
has a separate floating return (INRET1 for input 1 and INRET2 for input 2, etc.). To retain
isolation, the Input Return pins, as well as other conductors on the input circuit, must be
laid out separately.
isolation, the Input Return pins, as well as other conductors on the input circuit, must be
laid out separately.
3. Outputs: The 4 outputs are optically isolated from the other parts of the Guitar. Each
output has a separate floating return (OUTRET1 for output 1 and OUTRET2 for output 2,
etc.) To retain isolation, the Output Return pins, as well as other conductors on the
output circuit, must be laid out separately.
etc.) To retain isolation, the Output Return pins, as well as other conductors on the
output circuit, must be laid 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 Guitar’s heat-sink. The heat-
sink 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.
system's Protective Earth. Any other metallic parts (such as the chassis) of the assembly
should be connected to the Protective Earth as well.
7. 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.
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.
Follow these instructions to ensure safe and proper implementation.
Failure to meet any of the above-mentioned requirements can result in
drive/controller/host failure.
Guitar Installation Guide
Installation
MAN-GUIIG (Ver. 1.1)
3-7