GE Industrial Solutions AF-600 FP 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
Provides customer with “drive ready to run” status via contact closure. Panel
conditions that provide contact closure are; 1) drive output contactor is
energized with drive not faulted and 2) drive has been issued a run command.
Typical use for this status is “drive enabled” ready for speed reference to output
power to the motor. Contacts are rated 5A @ 240V AC, 24 VDC.
CTB1-6 through CTB1-7
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.
CTB1-35 through CTB1-36
Put normally open remote bypass contacts between CTB1-35 and CTB1-36.
Closure between these positions allow for remote bypassing the drive in the
event of a drive fault. After the drive reports a fault condition a minimal time
delay of 10 seconds is necessary by the operator prior to closing the remote
bypass contacts and bypassing the drive. DO NOT jumper CTB-8 and CTB-9
together.
DEH40602
– Page 8 AN 11-2021 Rev 05, 12/15/2011
WARNING: When the circuit breaker/disconnect handle is turned to the
“On” position, terminal board positions CTB-1 through CTB-3 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.
NOTE: One apparent exception to the above rule would be the need
to service the AF 600 FP drive while running 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.
WARNING: When the circuit breaker/disconnect handle is turned to the
“On” position, terminal board positions CTB-1 through CTB-3 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.