Rockwell-automation SA3100 Distributed Power System Drv Config,Program Bedienungsanleitung PDF herunterladen (Seite 135)

Vector with Constant Power Regulator

D-3

D.1 Dual Wound Motor

D.1.1 Overview

The dual wound motor is a specially designed motor which has two sets of terminals

for connection to two inverters. The outputs of the inverters are connected to the

parallel windings of the motor. This type of motor enables an application engineer to

use a larger horsepower motor than the horsepower of the largest inverter. To enable

the coordination between two SA3100 inverters, both inverters must be connected to

the same UDC card (the A-channel inverter is defined as the master unit). Register

700/1700 bit 14 must be asserted in each inverter.

The drives can be commissioned in the normal fashion, however, the resulting IGN

table from the A-channel inverter will be copied to the B-channel inverter. After

commissioning, both IGN tables are identical for the two drives. The application task in

the UDC will copy registers 217 and 218 from the A-channel inverter to registers 1104

and 1107, respectively.

D.1.2 Handshake Registers

After the inverters have been initially tuned, the VOA enable bit (bit 6 of register 1100)

must be set while the inverters are running. This bit causes the B-channel inverter to

follow the A-channel inverter vector orientation. The B-channel inverter indicates that

it is successfully following the A-channel inverter by asserting the VOA_OK@ bit (bit 7

of register 1200).

The configuration data for the drives is also modified. As mentioned above, the Dual

Winding bit is set in register 700/1700. The value in register 706 is set to 15. The

value in register 1706 is set to 16. The motor nameplate horsepower and current is

divided by two and set appropriately in the configuration registers. Note horsepower is

in watts divided by 10 units.

Table D.1 – Dual Wound Motor Handshake Registers

217 RPM Feedback ID Reference

218 Slip Frequency Vector Orientation

1104 Auxiliary Reference Id Reference

1107 - Vector Orientation

1 2 ... 130 131 132 133 134 135 136 137 138 139 140 ... 161 162

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Rockwell-automation SA3100 Distributed Power System Drv Config,Program Bedienungsanleitung Seite 135