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