BENSHAW RSi GM2 Series - 5 Learning Advanced Features

82
GM2 Series VFD
890054-00-00
Learning Basic Features
Initial Excitation (Pre-excite)
The inverter can supply excitation current to the motor when controlled by a digital input during a
stopped condition. When a digital input is set to 34 (Pre-excite) and activated, the inverter will
output DC voltage to the motor. The amount of current is set with Ad.13 (% of DC current) and is
based on the ratio of inverter/motor rated current. The current is limited to inverter rated current.
Group
Code
Name
Setting
Setting Range
Unit
Ad
13
Amount of applied DC
50
0-Rated Current
of
Inverter/Rated
Current of
Motor x 100%
%
In
65~69
Px terminal setting
options
34
Pre excite
-
-
The amount of DC braking required is based on the motor’s rated current. If the DC
braking current is too high or brake time is too long, the motor may overheat or be
damaged. The maximum amount of applied DC current is limited to the inverter rated
current.
Stop Mode Setting
Select a stop mode to stop the inverter operation. Select 0 (deceleration), 1 (DC Brake), 2 (Free-Run
(coast)) or 4 (Power Braking).
Deceleration Stop
Deceleration stop is the typical deceleration mode used when stopping a motor. If there are no
other settings applied, the inverter decelerates the motor from the frequency reference down to 0
Hz and stops.
Group
Code
Name
Setting
Setting Range
Unit
Ad
08
Stop Mode
0
Dec
0–4
-