Battery power supply, Control and backup supply – ElmoMC Gold Line Digital Servo Drives-Gold Drum HV User Manual
Page 55
Gold Drum HV Installation Guide (EtherCAT and CAN)
Installation
MAN-G-DRUMHVIG-EC (Ver. 1.202)
55
4.7.2.2.
Battery Power Supply
Figure 14: Battery Connection Topology
Caution: When using batteries, it is recommended to connect the negative pole
to the PE.
When doing so, the charger of the battery must be isolated from the mains by
an isolation transformer.
4.7.3.
Control and Backup Supply
In drives that have a 0 or 1 option (only for 400 V model) in the catalog number, a smart
control-supply algorithm enables the Gold Drum HV (High Voltage) to operate with the main
power supply only, with no need for an auxiliary supply voltage to supply the drive’s logic
section.
Note that in such a model there is no backup ability at all.
If backup functionality is required to store control parameters in the event of a mains power
outage, then an S, T, or A-model Gold Drum HV (High Voltage) should be used, with an external
24 VDC isolated supply connected to it.
Note that the S, T, or A-model Gold Drum HV (High Voltage) always requires an external 24 VDC
power supply, regardless of whether or not backup functionality is required.
Connect the auxiliary 24 VDC power supply as described below.
To connect the 24 VDC backup supply:
1.
Use a 24 AWG twisted pair shielded cable. The shield should have copper braid.
2.
The source of the 24VDC backup supply must be isolated with an isolation transformer.
3.
For safety and EMI reasons, connect the return of the 24VDC backup supply to the closest
ground (PE).
4.
Connect the cable shield to the closest ground (PE) near the power source.