Westinghouse Teco MA7200 Plus - Manual (Page 15)

MA7200 PLUS Inverter 1 to 2 HP PID Fan and Pump Quick Start Manual
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TECO – Westinghouse Motor Company
15
Step 11 – S
etting 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 11) directly control the system dynamic response.
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 as shown
next.
PRGM
DRIVE
DSPL
Bn-01
key
Acc. Time 1
1 - Press the
2 - Press the
3 - Press the key
key
An – 01 -
Freq. Cmd. 1
EDIT
ENTER
key to save. 5 - Press the
Entry Accepted
2 Seconds
Flashing
EDIT
ENTER
Flashing
Keypad Steps Resulting Display
RESET
key 3 times; then the Key twice 4 - Press the
Flashing
Bn-01 = 0010.0
Next set Bn-02 = 0030.0
To set parameter Bn-01 = 30.0 s
(Acceleration Time )
Acc. Time 1
Acc. Time 1
Bn-01 = 0030.0
Bn-01 = 0030.0
Acc. Time 1