Torque limit, Current limits, Monitor–motor status – Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX User Manual

Page 358: B-20 control block diagrams

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B-20

Control Block Diagrams

Torque Reference Overview, Continued

The torque reference is divided into 6 areas: bus regulator, power
limits, torque selection, torque limit, and monitor-motor status.

Inverter
Overload

Torque Limit

Min
Select

Pos Mtr Cur Lim

Limited Flux

Torque

Limits

72

88

Torque

To Current

Flux

71

8

9

10

12

13

14

Min Flux Level

Upper Iq

Limit

Min Flux Level

1

Flux

1

Flux

88

+

Motor

Power %

90

Motor

Flux %

= 100%

NTC Limit

11

Limit Status

Iq Limit Param

NTC Limit

Inverter (IT) Limit

Flux Brake

Torque Lim Param

Power Lim Param

Autotune Lim Param

Current

Limits

Max
Select

Current

Limit

Iq Rate
Limiter

I

Iq

Motor Flux %

Reference

To Torque

Block

91

Iq %

77

88

Torque Limit

87

0

+

1

2

3

4

5

6

Torque
Limit Sts

Y

W

X

71

Max
Select

IT Limit

Neg Mtr Cur Lim

73

–1

–1

+

Lower Iq

Limit

Current Limits

91

Iq %

Motor

Flux %

86

Motor Torque %

Motor

Speed

81

V

Speed

Feedback

125 MS
Filter

125 MS
Filter

Monitor–Motor Status

Current

Rate Lim

+

+

1

K

IS

1

K

IS

K

IS

168

K

IS

= I – I

d

2

Flux Current (Id)

I

S

V

168

Flux Current

+

V

168

Flux Current

Flux

Brake

100%

Encoderless in

Speed Mode

+

V

+

+

Id

Page B-34

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