Dual Input and Dual Output Wiring Applications—Frames 13...15

Frames 13…15 Drives Power Wiring Requirements
Power Source
Configuration
AC Input
In-line or back-to-back
Two entry wiring bays (WB) must be used for independent three-phase AC input power connections (AC Input-1 and AC Input-2).
AC Input-1 and AC Input-2 must have the same power source and phase sequence.
The cable length and impedance from the AC power source to AC Input-1 and AC Input-2 must be the same.
DC Bus
In-line
Must be continuous.
Back-to-back
A single balance connection must be provided at the motor end of the shared DC bus.
AC Output
In-line or back-to-back
Two exit wiring bays (WB) or one DC voltage balance bay (DCVBB) must be used for independent three-phase AC output power connections (AC Output-1 and AC Output-2).
Motor cables (Motor Cable-1 and Motor Cable-2) from the AC output connections (AC Output-1 and AC Output-2), respectively, to the motor must be the same length and impedance.
Both sets of motor cables (Motor Cable-1 and Motor Cable-2) must be connected to a single motor only.
Frame 13…15 Drive, In-Line Configuration Power Wiring Diagram
Item
Description
A
3-phase AC Input 1 and Motor Output 1
B
3-phase AC Input 2 and Motor Output 2
Frame 13…15 Drive, Back-to-Back Configuration Power Wiring Diagram
A power wiring diagram with letters indicating location of features
Item
Description
A
3-phase AC Input 1 and Motor Output 1
B
3-phase AC Input 2 and Motor Output 2
C
DC Voltage Balance
Frames 13…15 Bus Supply Power Wiring Requirements
Power Source
Configuration
Rule
AC Input
In-Line or Back-to-Back
Two entry wiring bays (WB) must be used for independent three-phase AC input power connections (AC Input-1 and AC Input-2).
AC Input-1 and AC Input-2 must have the same power source and phase sequence.
The cable length and impedance from the AC power source to AC Input-1 and AC Input-2 must be the same.
DC Bus
In-Line
Must be continuous.
Back-to-Back
A single balance connection must be provided at the motor end of the shared DC bus. This balance connection must be removed from the bus supply DC bus output when a DC balance connection is used at the motor end of a common bus inverter running a single motor.
DC Output
Back-to-Back
A DC voltage balance bay (DCBVBB) must be used.
In-Line or Back-to-Back
The DC bus bar or cable length and impedance from the DC bus output (DC Output-1 and DC Output-2) to the common bus inverter DC input (where applicable) must be the same.
All connected common bus inverters must have a common DC bus.
The load on DC Output-1 or DC Output-2 must not exceed 55% of the total bus supply rating.
The total load must not exceed 100% of the bus supply rating.
Frame 13…15 Bus Supply, In-Line Configuration Power Wiring Diagram
A power wiring diagram with letters indicating location of features
Item
Description
A
3-phase AC Input 1
B
DC Output 1 to Common Bus inverter
C
3-phase AC Input 2
D
DC Output 2 to Common Bus Inverter
Frame 13...15 Bus Supply, Back-to-Back Configuration Power Wiring Diagram
A power wiring diagram with letters indicating location of features
Item
Description
A
3-phase AC Input 1
B
DC Output 1 to Common Bus
C
3-phase AC Input 2
D
DC Output 2 to Common Bus
E
DC Voltage Balance
Frames 13…15 Common Bus Inverter Power Wiring Requirements—Back-to-Back Configuration
Power Source
Rule
DC Input
Two control bays (CB) must be used for DC input power connections (DC Input-1 and DC Input-2).
The DC bus bar or cable length and impedance from the DC output power source to the common bus inverter DC Input-1 and DC Input-2 must be the same.
DC Bus
A single balance connection must be provided at the motor end of the shared DC bus. This balance connection must be removed from the common bus inverter DC bus when a DC balance connection is used at the motor end of a bus supply.
AC Output
A DC voltage balance bay (DCVBB) must be used.
Motor cables (Motor Cable-1 and Motor Cable-2) from the AC output connections (AC Output-1 and AC Output-2), respectively, to the motor must be the same length and impedance.
Both sets of motor cables (Motor Cable-1 and Motor Cable-2) must be connected to a single motor only.
Frame 13…15 Common Bus Inverter, Back-to-Back Configuration Power Wiring Diagram
A power wiring diagram with letters indicating location of features
Item
Description
A
DC Input 1 and AC Output 1
B
DC Input 2 and AC Output 2
C
DC Voltage Balance
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.
Normal