ElmoMC SimplIQ Analog Servo Amplifiers-Cymbal - Manual (Page 19)

Cymbal Installation Guide Installation
MAN-CYMIG (Ver. 1.3)
19
3.5.1.1. Connecting the Motor Cable
Connect the motor power cable to the M1, M2, and M3 terminals of the main power connector
and the fourth wire to the PE (Protective Earth) on the heatsink (see diagram above).
Notes for connecting the motor cables:
• For best immunity, it is highly recommended to use a shielded (not twisted) cable for the
motor connection. A 4‐wire shielded cable should be used. The gauge is determined by the
actual current consumption of the motor.
• Connect the shield of the cable to the closest ground connection at the motor end.
• Connect the shield of the cable to the PE terminal on the heatsink.
• Be sure that the motor chassis is properly grounded.
• To close the motor cable into the drive, use the barrel connector, M6 spring washer and
M6 nut (in the drive). The required torque is 3 to 4 Nm.
• To close the PE wire into the drive, use the barrel connector, M5 flat washer, M5 spring
washer and M5 screw to the heatsink. The required torque is 3 to 4 Nm.
• Use flex wire 6/8/10 AWG to barrel connector.
Figure 4: AC Motor Power Connection Diagram
3.5.1.2. Connecting the DC Power
The Power stage of the Cymbal is fully isolated from other sections of the Cymbal, such as the
control stage and the heatsink. This contributes very significantly to the safety and the EMI
immunity of the Cymbal. In addition it simplifies the requirements of the DC power supply used
to power the DC bus of the Cymbal and allows also the operation with a non‐isolated DC power
source.
3.5.1.2.a Operation with an Isolated DC power Supply
The PE (Protective Ground of the AC network) is connected to the VN‐ terminal (the Negative
Power Input terminal).
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