MA7200 PLUS Inverter 1 to 2 HP PID Fan and Pump Quick Start Manual

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Step 10 – Setting PID Parameters; Proportional Gain (Bn-17) and Integral Time (Bn-18)

•After all external connections have been made and the protective covers have been replaced, power up the inverter but do not run at this point.

•Parameters Bn-17 = 1.0 (Proportional Gain) and Bn-18 = 10.0s (Integral Time) are factory set to the values shown. However, a good starting point for these values is setting the Proportional Gain Bn-17 = 2.0 and the Integral Time Bn-18 = 5.0s. To change these parameters, follow the keypad navigation procedure below.

To set parameter Bn-17 = 02.0

 

 

 

 

 

 

(Proportional Gain )

 

 

 

 

Keypad Steps

 

Resulting Display

1 - Press the

 

PRGM

key

 

 

 

 

 

 

An – 01 -

 

DRIVE

 

 

 

 

 

 

Freq. Cmd. 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 - Press the

 

DSPL

key

 

 

 

 

 

Bn-01

 

 

 

 

 

 

Acc. Time 1

 

 

 

 

 

 

 

 

 

 

 

 

 

3 - Press the

 

 

 

key until the display shows

 

 

 

Bn-17

 

 

 

 

 

 

PID P_ Gain

 

 

 

 

 

 

 

 

 

 

 

 

 

4 - Press the

ENTER

key

 

 

 

Bn-17 = 01.00

 

 

EDIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PID P_ Gain

5 - Press the

 

 

 

key twice; then the

key

 

 

Bn-17 = 02.00

RESET

 

 

PID P_ Gain

 

 

 

 

 

 

 

 

 

 

 

 

 

6 - Press the

EDIT

 

key to save.

 

 

 

 

Entry Accepted

ENTER

 

 

 

 

 

 

 

 

Flashing

Flashing

2Seconds

Flashing

Next set Bn-18 = 005.00

Cn-19 = 050%

Freq Cmd Low Bound

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TECO – Westinghouse Motor Company