B-14, Inverter overload it, B-14 control block diagrams – Rockwell Automation 20D PowerFlex 700S Drive Ph I Control, Frames 1...11 User Manual

Page 206

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B-14

Control Block Diagrams

NTC

Pwr EE Data

Iq Ref Limited

(see torque block)

Exception Event1

Duty Cycle

Bus Voltage

PWM Frequency

Power Device

Characteristics

Motor NP FLA

Output current

Mtr Over Load (I

2

T)

60

1.0

pu_current

pu_current

2.0 typ

right of curve

1.025 typ

time (sec)

pu motor

velocity

DB resistor

dc bus

415

417

416

414

321

0

5

1

Brake PulseWatts

{pulse watts @ 1sec}

Brake Watts

Exception Event2

(BrakeOL Trip)

BusReg/Brake Ref

{% of peak ac line}

Drive Cnfg

(Brake Enable)

pu Stator Current fdbk

Mtr I2T Calibrat

Mtr I2T Trp ThrH

Service Factor

Mtr I2T Curr Min

337

336

339

340

320

10

11

Exception Event1

(Mtr OL Trip)

(Mtr OL Pend)

338

Mtr I2T Spd Min

Inverter Overload IT

Heat sink and

Junction degree

Calculator

Inverter Over Load (IT)

0

1

2

3

4

5

6

7

313

345

343

344

346

Drive OL Status

OL OpnLP CurrLim

Heatsink Temp

Drive OL JnctTemp

(NTC Open)

(HS OverTemp)

OL ClsLp CurrLim

(NTC Shorted)

(IT Pending)

(IT Foldback)

(HS Pending)

(IT Trip)

(Jnc OverTemp)

(Inv OTmpTrip0

(Inv OL Pend)

(Inv OTmpPend)

(Inv OLTrip)

320

358

(Brake Extern)

13

14

16

15

308

X

2

1

2

3

4

5

6

B

A

D

C

F

E

H

G

I

14

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