ElmoMC SimplIQ Analog Servo Amplifiers-Cymbal - Manual (Page 22)

Cymbal Installation Guide Installation
MAN-CYMIG (Ver. 1.3)
22
Notes for connecting the DC power supply:
• Be aware: The Cymbal can operate from either an:
ƒ isolated DC power supply
or
ƒ non‐isolated DC power supply
• For best immunity, it is highly recommended to use twisted cables for the DC power supply
cable. A 3‐wire shielded cable should be used. The gauge is determined by the actual
current consumption of the motor.
• Connect both ends of the cable shield to the closest ground connection, one end near the
power supply and the other end to the PE terminal on the Cymbal’s heatsink.
• For safety reasons connect the VN‐ of the power supply to the closest ground connection.
• To close the power supply 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.
3.5.1.3. Connecting the Optional Backup Supply Cable
Power to the Cymbal is provided by a 12 to 195 VDC source (depending on model type). A
“smart” control‐supply algorithm enables the Cymbal to operate with the power supply only,
with no need for an auxiliary supply voltage. If backup functionality is required for storing
control parameters in case of power‐outs, an external 12 to 195 VDC power supply can be
connected, providing maximum flexibility and optional backup functionality when needed.
Note:
In the 400 V product line (CYM xx/400), there is no internal connection to enable the
main input to power the internal SMPS for low logic voltages. Therefore, a 24 VDC auxiliary
power supply must be connected in order to activate the 400 V drive’s internal SMPS. For the
xx/400 model, the 24 VDC auxiliary power supply can also carry out the backup functionality
described above.
To connect the backup supply to the Auxiliary port, use the Cymbal's J1 connector (Back up
supply connector). Remember, you are working with DC power so be sure to exercise caution.
Notes for backup supply connections:
• Use a 24 AWG twisted pair shielded cable. The shield should have copper braid.
• The source of the backup supply must be isolated.
• For safety reasons, connect the return of the backup supply source to the closest ground.
• Connect the cable shield to the closest ground near the power source.
• Before applying power, first verify the polarity of the connection.
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