Toshiba W7 manual Cumulative Run-timer Alarm Setting, DC Injection Braking Current

Cumulative Run-timer Alarm Setting					DC Injection Braking Time
Cumulative Run-timer Alarm Setting
Program	Protection Settings Cumulative Run-timer Alarm				Parameter Type — Numerical
Setting					Factory Default — 175.0
This parameter sets a run-time value that, once exceeded, provides an output					Changeable During Run — Yes
signal. The output signal may be used to control external equipment or used to
engage a brake.					Minimum — 0.1
Note: The time displayed is 1/10th of the actual time					Maximum — 999.9
(0.1 hr. = 1.0 hr.).					Units — Hours (X 100)
DC Injection Braking Current
Program	Protection DC Injection Current				Parameter Type — Numerical
⇒				⇒	Factory Default — 50.00
This parameter sets the percentage of the rated current of the ASD that will be
used for DC Injection braking. A larger load will require a higher setting.					Changeable During Run — Yes
DC Injection Braking					Minimum — 0.00
DC Injection Braking is a braking system used with three-phase motors.					Maximum — 100.00
Unlike conventional brakes, there is no physical contact between the rotating
shaft and a stationary brake pad or drum. When braking is required, the ASD					Units — %
outputs a DC current that is applied to the windings of the motor to quickly
brake the motor.⇒		The braking current⇒stops when the time entered in DC
Injection Braking Time times out.
The intensity of the DC current used while braking determines how fast the
motor will come to a stop and may be set at the DC Injection Braking
Current parameter. The intensity setting is entered as a percentage of the full
load current of the ASD.
Note: DC Injection Braking is also used to preheat the motor or to
keep the rotor from spinning freely when no rotation is
required by providing a pulsating DC current into the motor
at the Carrier Frequency. This feature may be enabled at the
Motor Shaft Stationary Control parameter.
DC Injection Braking Start Frequency
Program	Protection Settings DC Injection Start Frequency				Parameter Type — Numerical
During deceleration this is the frequency at which DC Injection braking will					Factory Default — 0.0
start.
					Changeable During Run — Yes
					Minimum — 0.0
					Maximum — 120.0
					Units — Hz
DC Injection Braking Time
Program	Protection Settings DC Injection Time				Parameter Type — Numerical
This parameter is used to set the on-time duration of the DC Injection braking.					Factory Default — 1.00
W7 ASD Installation⇒			and Operation Manual⇒		Changeable During Run — Yes
					Minimum — 0.00
					Maximum — 10.00
					Units — Seconds	65