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Gemini GT6 Hardware Installation Guide
Relay Connections (optional)
To use the drive’s internal relay, connect your external circuit to the
RELAY COM and RELAY N.O. terminals. The next drawing shows a typical
application—connecting a motor brake to the relay terminals.
GEMINI Drive
RELAY COM
RELAY N.O.
Motor Cable
Flying Leads for
Motor Brake
+5VDC
User Supplied
+24VDC
User Supplied
24V Return
Optional
Diode
(1N4936)
Relay Connections
The relay is normally open. When the drive is enabled, it holds the relay closed. If
the drive faults or is disabled, the relay will open.
Relay Operation:
Drive Condition: Relay State:
Enabled Closed
Faulted Open
No AC power*, or not enabled Open
* +24VDC power does not affect the relay. With +24VDC applied, the relay will be open if
AC power is
not
applied.
Relay Specifications:
Relay Type: Dry contact mechanical relay
Normally open
Relay Rating: 5 amps at 24VDC or 120VAC
See the OUTFNC and OUTLVL commands in the Gemini Programmer’s Refer-
ence for more information on configuring the relay.
+24VDC “Keep Alive” Power Connections (optional)
The following drawing shows how to connect an external +24VDC power source
to the drive. Use the removable terminal connector that is supplied with the drive.
With +24VDC applied, the drive’s internal control board will remain powered
when the primary AC power source is disconnected, and will maintain several
important functions, including communication diagnostics, position feedback, and
other logic functions.
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