CV 2 - Revision history

Dan Mycio at 22:29, 27 October 2021

2021-10-27T22:29:58Z

← Older revision		Revision as of 22:29, 27 October 2021
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	CV2 is used in conjunction with [[Diesel Version 5:CV 6\|CV6]] and [[{{NAMESPACE}}:CV_5\|CV5]] as part of the [[{{NAMESPACE}}:3_Point_Speed_Curves_Feature\|3 Point Speed Curves feature]]		CV2 is used in conjunction with [[Diesel Version 5:CV 6\|CV6]] and [[{{NAMESPACE}}:CV_5\|CV5]] as part of the [[{{NAMESPACE}}:3_Point_Speed_Curves_Feature\|3 Point Speed Curves feature]]

	~~From~~ S-9.2.2 of the NMRA Standards and Recommended Practices:		Excerpt from [https://www.nmra.org/sites/default/files/standards/sandrp/pdf/s-9.2.2_decoder_cvs_2012.07.pdf S-9.2.2] of the NMRA Standards and Recommended Practices:

	''"Vstart is used to define the voltage drive level used as the start voltage on the motor. The voltage drive levels shall correspond linearly to the voltage applied to the motor at speed step one, as a fraction of available rectified supply voltage. When the voltage drive level is equal to zero, there shall be zero voltage applied to the motor. When it is at maximum (255), the full available rectified voltage shall be applied."''		''"Vstart is used to define the voltage drive level used as the start voltage on the motor. The voltage drive levels shall correspond linearly to the voltage applied to the motor at speed step one, as a fraction of available rectified supply voltage. When the voltage drive level is equal to zero, there shall be zero voltage applied to the motor. When it is at maximum (255), the full available rectified voltage shall be applied."''

TCSDanM: 1 revision imported

2021-07-16T21:47:30Z

1 revision imported

← Older revision	Revision as of 21:47, 16 July 2021
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tcs>Dan Mycio at 19:57, 2 April 2021

2021-04-02T19:57:24Z

New page

{{Infobox CV
|cv name=Vstart (Start Volts)
|cv range=0-255
|cv accepted=0-255
|cv default=0
}}

==NMRA CV 2 - Vstart (Start Volts)==
CV 2 Adds an offset voltage to the motor so that the locomotive starts moving at a faster speed. This is useful for speed matching or for locomotives without BEMF. this setting is also useful for inefficient electric motors which have require a higher voltage to overcome "stall current." Some motors may lurch or repeatedly stop and start if the start volts are too low. Increasing the start volts can improve performance by increasing the low-end power. Vstart is also referred to as "boost" by some manufacturers.

CV2 is used in conjunction with [[Diesel Version 5:CV 6|CV6]] and [[{{NAMESPACE}}:CV_5|CV5]] as part of the [[{{NAMESPACE}}:3_Point_Speed_Curves_Feature|3 Point Speed Curves feature]]

From S-9.2.2 of the NMRA Standards and Recommended Practices:

''"Vstart is used to define the voltage drive level used as the start voltage on the motor. The voltage drive levels shall correspond linearly to the voltage applied to the motor at speed step one, as a fraction of available rectified supply voltage. When the voltage drive level is equal to zero, there shall be zero voltage applied to the motor. When it is at maximum (255), the full available rectified voltage shall be applied."''

[[Category:Standard CV]]
[[Category:Motor]]