Panasonic A4P Series instruction manual Parameters for Full-Closed Control, Setup value Content

Parameter Setup

				Standard default : < >
Servo￿	Title	Setup￿	Unit	Function/Content
PrNo.		range
73	Setup of ￿	0 to 20000	￿ r/min	• You can set up the over-speed level. The over-speed level becomes 1.2
	over-speed level	<0>		times of the motor max. speed by setting up this to 0.￿
				• Use this with 0 setup in normal operation. Set up other value only when
				you need to lower the over-speed level. ￿
				• The setup value of this parameter is limited by 1.2 times of the motor
				max. speed.￿
				<Caution> ￿
				The detection error against the setup value is ±3 [r/min] in case of the 7-wire
				absolute encoder, and ±36 [r/min] in case of the 5-wire incremental encoder.

Parameters for Full-Closed Control

										Standard default : < >
Servo￿	Title	Setup￿		Unit					Function/Content
PrNo.		range
78￿	Numerator of ￿	0 to 32767	￿	–￿	You can setup the ratio between the encoder resolution and the external
*￿	external scale ￿	<10000>	￿	￿	scale resolution at full-closed control.
(F)	ratio￿	￿		￿			Encoder resolution per one motor revolution￿				SV.Pr78 X 2 SV.Pr79￿
										=
	￿	￿		￿		External scale resolution per one motor revolution					SV.Pr7A
	￿	￿		￿	• SV.Pr78= 0				￿
79￿	Multiplier of ￿	0 to 17￿		–￿		Numerator equals to encoder resolution, and you can setup ￿
*￿	numerator of ￿	<0>￿		￿		the external scale resolution per one motor revolution with SV.Pr7A.￿
(F)	external scale ￿	￿		￿	• SV.Pr78 ≠ 0,￿
						Setup the ratio between the external scale resolution and the encoder
	ratio￿	￿		￿
					￿resolution per one motor revolution according to the above formula.￿
	￿	￿		￿
					<Caution>￿
7A￿	Denominator of ￿	1 to 32767	￿	–￿
					• Upper limit				of numerator value after calculation		is 131072. Setup
*￿	external scale ￿	<10000>
						exceeding this value will be invalidated, and 131702 will be the actual
(F)	ratio
						numerator.￿
					• The actual calculation of numerator is “numerator of external scale
						division (SV.Pr78) x 2 to the nth power (a set value of SV.Pr79)”.
7B￿	Hybrid deviation	1 to 10000	￿	16 x	• You can setup the permissible gap (hybrid deviation) between the
*￿	error level	<100>	external			present motor position and the present external scale position.
(F)				scale
				pulse
7C￿	External scale ￿	0 to 1￿		–￿	You can set up the logic of the absolute data of the external scale.
*￿	direction￿	<0>
						Setup value		￿	Content￿
(F)
	￿						￿		Serial data will increase when the detection head travels
							0￿
									to the right viewed from the mounting side. (+ count)￿
							￿
									Serial data will decrease when the detection head travels
						1
									to the right viewed from the mounting side. (– count)
					<Caution>￿
					Unlike 16.Pr50 (setup of operating direction), this parameter depends on
					the mounting direction of external scale. Please note that the full-closed
					control cannot be executed appropriately in a reverse setting.

<Notes>

•Anything marked with “(F)” on the servo parameter number (Servo PrNo.) can be used only for the “Full- Closed Control”.

•For servo parameters which No. have a suffix of "*", changed contents will be validated when you turn on the control power.

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