BENSHAW RSi H2 Series - Start Mode Setting

Parameter Descriptions
140
890053-00-02
5.4.2 ADV-07 Start Mode Setting
Select the start mode to use when a run command is applied with the motor in the stopped
condition. Select 0 (Acceleration Start) or 1 (DC Brake Start). Excitation current (Pre-Excite) can
also be applied by activating a digital input.
5.4.2.1 Acceleration Start
Acceleration start is the typical start mode used when starting a motor from a stopped condition. If
there are no other settings applied, the motor accelerates to the frequency reference when the run
command is applied.
Group
Code
Name
LCD Display
Parameter Setting
Setting Range
Unit
ADV
07
Start mode
Start mode
0
Acc
0–1
-
5.4.2.2 Start After DC Braking
This start mode supplies a DC voltage and current for a set amount of time to provide DC braking
before the inverter starts to accelerate the motor. Use when the motor is rotating due to its inertia.
DC braking will stop the motor allowing the motor to accelerate from a stopped condition. DC
braking can also be used when a mechanical brake connected to a motor and constant torque is
required after the release of the mechanical brake. DC Brake at start does not operate in
sensorless vector mode (DRV-09 set to 3).
Group
Code
Name
LCD Display
Parameter Setting
Setting Range
Unit
ADV
07
Start mode
Start Mode
1
DC-Start
0–1
-
12
Start DC braking time
DC-Start
Time
0.00
0.00–60.00
sec
13
DC Injection Level
DC Inj Level
50
0–200
%
The amount of DC braking required is based on the motor’s rated current. If the DC Brake
current is too high or brake time is too long, the motor may overheat or be damaged. The
maximum amount of DC current is limited to the inverter rated current.