ElmoMC Gold Line Digital Servo Drives-Gold Trombone - Manual (Page 48)

Gold Trombone Installation Guide (EtherCAT and CAN) Installation
MAN-G-TROIG-EC (Ver. 1.604)
www.elmomc.com
48
If backup functionality is required to store control parameters in the event of a mains power
outage, then an S or T-model Gold Trombone should be used, with an external 24 VDC isolated
supply connected to it.
Note that the S or T-model Gold Trombone 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 24 VDC backup supply must be isolated with an isolation transformer.
3. For safety and EMI reasons, connect the return of the 24 VDC backup supply to the closest
ground (PE).
4. Connect the cable shield to the closest ground (PE) near the power source.
5. Before applying power, first verify that the polarity of the connection is correct.
Figure 13: Auxiliary 24 VDC Backup Supply Connection Diagram