GE Industrial Solutions AF-650 GP Drive Panel - Manual (Page 15)

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2. Customer Terminal Board – “CTB”
Inside the panel enclosure there is terminal board for convenient connection of customer control wiring. The
customer interface drawing provides a visual reference of the terminal board positions with the detailed
descriptions as follows:
CTB1-1 through CTB1-3
Customer Safety Interlocks. Put normally closed contacts between CTB-1 and
CTB-3. CTB-2 and CTB-3 provide an additional connection point if required. An
open circuit between these positions will cause the bypass and drive output
contactors to drop out resulting in power being removed from the motor. These
positions come jumpered together from the factory and require removal of the
factory jumpers prior to connecting customer normally closed contacts.
CTB1-4 through CTB1-5
Ready Status Provides customer with “drive ready to run” status via contact
closure. Panel conditions that provide contact closure are; 1) drive has been
issued a run command and 2) drive output contactor is energized with drive not
faulted. Typical use for this status is “drive enabled” ready for speed reference
to output power to the motor. One normally open contact is rated 5A @ 240V
AC, 24 VDC.
CTB1-6 through CTB1-7
Remote Run Input. Put normally open remote run contacts between CTB-6 and
CTB-7. Closure between these positions is required for the motor to run in either
inverter or bypass modes when the H-O-A switch is in the “Auto” position. The
positions come jumpered together from the factory.
DEH40652
– Page 8 AN 11-2021 Rev 06, 12/16/2011
NOTE: One apparent exception to the above rule would be the need
to service the AF 650 GP drive while running in bypass mode with
“Hand/off/Auto” switch in Hand or Auto mode and “Drive/Off/Bypass”
in Bypass mode. The padlock-able Test/Isolate/Normal switch satisfies
this need. This switch comes with a padlock-able clear plastic cover
that maintenance personnel can “lock out” to ensure the switch stays
in the “Isolate” position while the drive is serviced. Though
Test/Isolate/Normal switch is in isolate position, Terminal CTB1-1
through CTB1-3 will be at 115V.
WARNING: When the circuit breaker/disconnect handle is turned
to the “On” position, terminal board points can be at 115 VAC with
respect to ground. Therefore, prior to making any connections to these
points lock the disconnect handle in the “Off” position. In fact, good
safety practice dictates that prior to servicing any electrical equipment
that all sources of electrical energy be disconnected and “locked out” to
avoid reconnection by a third party unaware of the maintenance efforts
underway.