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MA7200 PLUS Operating Manual
TECO – Westinghouse Motor Company App-2 Fan and Pump
Step 5 –
Setting Parameters Acceleration (Bn-01) and Deceleration (Bn-02) Times
Acceleration
and
Deceleration
times as well as the PID control [(
P) Proportional Gain
and/or the
(I) Integral Time
(See STEP 10)
directly control the
system dynamic response. In general, the longer the acceleration and
deceleration time, the slower the system response, and the shorter time, the faster the response. An excessive
amount of time can result in sluggish system performance while too short of a time may result in system instability.
The starting values suggested by this guide normally result in good system performance for
the majority of Fan and Pump applications. If the values need to be adjusted, caution
should be exercised, and the changes should be in small increments to avoid system
instability.
Parameters
Bn-01
(Acceleration)
and
Bn-02
(Deceleration)
are
both
set at the factory for
10.0 seconds.
For
Fan and Pump applications, the recommended starting values are
30 seconds.
To change these parameters, follow
the keypad navigation procedure below.
PRGM
DRIVE
DSPL
key
Keypad Steps
Resulting Display
1 - Press the
2 - Press the
3 - Press the
key
An – 01 -
Freq. Cmd. 1
key
To set parameter
Bn-01 = 30.0
S
(Acceleration)
Bn-01-
Acc. Time 1
Flashing
4 - Press the
RESET
key 3 times, then the
EDIT
ENTER
key to
save
5 - Press the
Entry Accepted
2 Seconds
Flashing
Bn-17 = 0
2
.00
PID P_Gain
EDIT
ENTER
Bn-01=0010.
0
S
Acc. Time 1
Flashing
key twice
Bn-01=00
3
0.0 S
Acc. Time 1
Go to next step
Cont.