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

Page 83

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Configuring the UDC Module’s Registers

3-45

Ground Current Feedback (Amps) Register

208/1208

The Ground Current Feedback (Amps) register contains the
measured RMS ground current. This value is scaled in amps times
10. For example, 50.1 amps would be represented as 501.

Sug. Var. Name:

GI_FB%

Units:

Amps

10

Range:

N/A

Access:

Read only

Voltage Feedback (Volts RMS) Register

209/1209

In Vector mode, the Voltage Feedback (Volts RMS) register contains
the measured RMS motor voltage scaled in volts.

In Volts per Hertz mode, this register contains the fundamental
frequency RMS volts.

Sug. Var. Name:

V_FB%

Units:

RMS volts

Range:

N/A

Access:

Read only

Current Feedback (Amps RMS) Register

210/1210

The Current Feedback (Amps RMS) register contains the measured
RMS motor current. This value is scaled in amps times 10. For
example, 50.1 amps would be represented as 501.

Sug. Var. Name:

I_FB%

Units:

Amps

10

Range:

N/A

Access:

Read only

Current Feedback Normalized Register (Vector)

211/1211

In Vector mode, register 211/1211 functions as the Current
Feedback Normalized register. This register contains the measured
RMS motor current. The data is normalized so that +/- 4095 counts is
equal to the rated motor current times the motor overload ratio.

Sug. Var. Name:

I_FBN%

Units:

Counts

Range:

+/- 4095

Access:

Read only

This register is used as the I_FDBK parameter in the THERMAL OVERLOAD control block used in DPS
drives to monitor the motor for thermal overload.

Volt Command Register (V/Hz)

211/1211

In Volts per Hertz mode, register 211/1211 functions as the Volt
Command feedback register. This register contains the commanded
voltage (fundamental frequency, RMS volts). The value is scaled in
volts.

Sug. Var. Name:

V_CMD%

Units:

RMS volts

Range:
Access:

Read only

Id Feedback Normalized Register (Vector)

212/1212

In Vector mode, register 212/1212 functions as the Id Feedback
Normalized register. This register contains the Id component
(magnetizing current) of the current feedback. The data is
normalized so that 4095 counts is equal to the full value of
magnetizing current (STATOR_IZ_E1%).

Sug. Var. Name:

ID_FBN%

Units:

Counts

Range:

0 to 4095

Access:

Read only

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