Rockwell Automation SA3100 Distributed Power System Drv Config,Program User Manual

Page 63

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Configuring the UDC Module’s Registers

3-25

Torque Reference Register (Vector)

102/1102

In Vector mode, register 102/1102 functions as the Torque
Reference Register. The value in this register is the reference sent to
the PMI Regulator for use in the Vector control algorithm minor loop.

Sug. Var. Name:

TRQ_REF%

Units:

Counts

Range:

-4095 to +4095

Access:

Read/Write

This value corresponds to the torque produced by the configured maximum motor current (rated motor
current

motor overload ratio). Values of -4095 and +4095 represent full scale torque in either direction. The

value in this register is limited to not exceed +/- 4095.

See register 203/1203, bit 4, for additional information.

Frequency Reference Register (V/Hz)

102/1102 and 103/1103

In Volts per Hertz mode, registers 102/1102 and 103/1103 form a
double precision register that contains the frequency reference
value. Register 102/1102 holds the high word. Register 103/1103
holds the low word.

Sug. Var. Name:

FRQ_REF!

Units:

Hz

1000

Range: +/-

600

Hz

Access:

Read/Write

The value is entered in Hz

1000. For example, a value of 400,000 represents 400.000 Hz.

See register 203/1203, bit 4, for additional information.

Flux Reference Register (Vector)

104/1104

In Vector mode, register 104/1104 functions as the Flux Reference
register. The value in this register defines the ratio used to scale the
value for magnetizing current (STATOR_IZ_E1%).

Sug. Var. Name:

FLX_REF%

Units:

Counts

Range:

0 to 4095

Access:

Read/Write

This value is used when the Enable UDC Flux Reference option has been selected during parameter entry
for the SA3100 Vector regulator, or the Manual Compensation option has been selected for the SA3100
Vector regulator with Constant Power. For example, if register 104 = 4095, then the full value of
STATOR_IZ_E1% will be used for magnetizing current. When the TORD_ON@ bit is set, this value scales
the overload ratio.

Boost Voltage Reference (V/Hz)

104/1104

In Volts per Hertz mode, register 104/1104 functions as the Boost
Voltage Reference register. The value in this register is used to
increase the voltage derived from the V/Hz characteristic curve in
order to increase torque and decrease slip.

Sug. Var. Name:

VLT_REF%

Units:

Volts

10

Range:

+/- 5V

Access:

Read/Write

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