ElmoMC ExtrIQ Digital Servo Drives-Eagle HV - Manual (Page 23)

Eagle HV Installation Guide Installation
MAN-EAG-HVIG (Ver. 1.502)
www.elmomc.com
23
3.5. Connecting the Cables
The Eagle HV has nine connectors.
3.5.1. Wiring the Eagle HV
Once the Eagle HV is mounted, you are ready to wire the device. Proper wiring, grounding and
shielding are essential for ensuring safe, immune and optimal servo performance of the
Eagle HV.
Caution:
Follow these instructions to ensure safe and proper wiring:
• Use twisted pair shielded cables for control, feedback and communication connections. For
best results, the cable should have an aluminum foil shield covered by copper braid, and
should contain a drain wire.
The drain wire is a non-insulated wire that is in contact with parts of the cable, usually the
shield. It is used to terminate the shield and as a grounding connection.
• The impedance of the wire must be as low as possible. The size of the wire must be thicker
than actually required by the carrying current. A 24, 26 or 28 AWG wire for control and
feedback cables is satisfactory although 24 AWG is recommended.
• Use shielded wires for motor connections as well. If the wires are long, ensure that the
capacitance between the wires is not too high: C < 30 nF is satisfactory for most
applications.
• Keep all wires and cables as short as possible.
• Keep the motor wires as far away as possible from the feedback, control and
communication cables.
• Ensure that in normal operating conditions, the shielded wires and drain carry no current.
The only time these conductors carry current is under abnormal conditions, when electrical
equipment has become a potential shock or fire hazard while conducting external EMI
interferences directly to ground, in order to prevent them from affecting the drive. Failing
to meet this requirement can result in drive/controller/host failure.
• After completing the wiring, carefully inspect all wires to ensure tightness, good solder
joints and general safety.
3.5.2. Connection Diagrams
The various Eagle HV models connection diagrams differ from one another.
The following diagrams depict the two different possibilities for power supply connections:
• 400 V, 700 V, and 800 V S-models that feature power supply backup functionality, needing
an Aux. 24 V backup supply (The drive will not be operative, without having the external 24
VDC supply).
• 400 V model without power supply backup functionality (The drive’s internal DC/DC
converter is fed from the VP+ and VN- , of the internal drive's bus line).