Siemens 6RA70 specifications 10-72, P707 Resolution of Main setpoint analog input

	PNU	Description		Value range	No. indices	See
				[Unit]	Factory	Change
				Steps	setting	(Access /
					Type	Status)
	P706	Source for enabling of "Main setpoint" analog input		All binector numbers	Ind: None	P052 = 3
*		Selection of binector to control enabling of the analog input ("1" state =	1		FS=1	P051 = 40
					Type: L2	Offline
	(G113)	enabled)
		0 = binector B0000
		1 = binector B0001
		etc.
	P707	Resolution of "Main setpoint" analog input		11 to 14	Ind: None	P052 = 3
*		The voltage applied to the analog input is converted to a digital value (A/D		[Bit]	FS=12	P051 = 40
				1 bit	Type: O2	Offline
	(G113)	conversion) for further processing. The method used calculates an average
		value of the input voltage over a specific measuring time.
		The A/D conversion process produces a scale for the voltage range of 0 to ±
		10V, the number of steps (divisions) along this scale can be set in P707 (i.e.
		the smallest possible differentiable change in the input voltage
		(quantization) can be set in this parameter). The number of scale steps or
		intervals is referred to as "Resolution".

The resolution is normally specified in bits:

±11 bits means 2 * 2048 scale divisions

±12 bits means 2 * 4096 scale divisions

±13 bits means 2 * 8192 scale divisions

±14 bits means 2 * 16384 scale divisions

The following applies:

The higher the resolution, the longer the averaging time and thus also the delay period between the application of an analog step change and the earliest possible moment of availability of the digital value for further processing.

For this reason, it is important to find a compromise between the resolution and delay period.

Param.	Resolution	Quantization	Delay period
value	better than
11	± 11 bits	4.4 mV	0.53 ms
12	± 12 bits	2.2 mV	0.95 ms
13	± 13 bits	1.1 mV	1.81 ms
14	± 14 bits	0.56 mV	3.51 ms

If the analog input is operating as a current input (0 to 20 mA or 4 to 20 mA), the above applies analogously.

Analog input terminals 6 / 7 (analog selectable input 1)

P710	Signal type of "Analog selectable input 1"			0 to 2	Ind: None	P052	= 3
*	0 =	Voltage input 0 to ±10 V		1	FS=0	P051	= 40
					Type: O2	Offline
(G113)	1 =	Current input 0 to ±20 mA
	2 =	Current input 4 to 20 mA
P711	Normalization of "Analog selectable input 1"			-1000.0 to 1000.0	Ind: 4	P052	= 3
	This parameter specifies the percentage value which is generated for an			[%]	FS=100.0	P051	= 40
FDS				0.1%	Type: I2	Online
	input voltage of 10V (or an input current of 20mA) at the analog input.
(G113)	The following generally applies:
	For voltage input:
	P711	[%] =10 V ∗ Y	X .. Input voltage in volts
		X	Y .. % value which is generated for input
	With current input:		voltage X
	P711 [%] = 20 mA ∗ Y		X .. Input current in mA
		X	Y .. % value which is generated for input
			current X
P712	Offset for "Analog selectable input 1"			-200.00 to 199.99	Ind: None	P052	= 3
				[%]	FS=0.00	P051	= 40
(G113)				0.01%	Type: I2	Online
P713	Mode of signal injection at "Analog selectable input 1"			0 to 3	Ind: None	P052	= 3
*	0 =	Injection of signal with sign		1	FS=0	P051	= 40
					Type: O2	Offline
(G113)	1 =	Injection of absolute value of signal
	2 =	Injection of signal with sign, inverted
	3 =	Injection of absolute value of signal, inverted
10-72				SIEMENS Energy & Automation
			SIMOREG DC Master Base Drive Panel Operating Instructions