Siemens SIMOTRAS 6SG7050 Operating Instructions Manual page 404

Parameter list
PNU Description
P707 Resolution of "Main setpoint" analog input
*
The voltage applied to the analog input is converted to a digital value (A/D
conversion) for further processing. The method used calculates an average
(G113)
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
value better than
11 ± 11 bits
12 ± 12 bits
13 ± 13 bits
14 ± 14 bits
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 = Voltage input 0 to ±10 V
1 = Current input 0 to ±20 mA
(G113)
2 = Current input 4 to 20 mA
P711 Normalization of "Analog selectable input 1"
This parameter specifies the percentage value which is generated for an
FDS
input voltage of 10V (or an input current of 20mA) at the analog input.
The following general rule applies:
(G113)
With a voltage input:
[%] =
P 711 10 V
With a current input:
[%] =
P 711 20
P712 Offset for "Analog selectable input 1"
(G113)
P713 Mode of signal injection at "Analog selectable input 1"
*
0 = Injection of signal with sign
1 = Injection of absolute value of signal
(G113)
2 = Injection of signal with sign, inverted
3 = Injection of absolute value of signal, inverted
11-56
Quantization
4.4 mV
2.2 mV
1.1 mV
0.56 mV
Y
∗
X .. Input voltage in volts
X
Y .. % value which is generated for input
current X
Y
∗
mA X .. Input current in mA
X
Y .. % value which is generated for input
current X
Value range
[Unit]
11 to 14
[Bit]
1 bit
Delay period
0.53 ms
0.95 ms
1.81 ms
3.51 ms
0 to 2
1
-1000.0 to 1000.0
[%]
0.1%
-200.00 to 199.99
[%]
0.01%
0 to 3
1
No. indices
Ind: None
FS=12
Type: O2
Ind: None
FS=0
Type: O2
Ind: 4
FS=100.0
Type: I2
Ind: None
FS=0.00
Type: I2
Ind: None
FS=0
Type: O2
SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
01.04
See
Change
P052 = 3
P051 = 40
Offline
P052 = 3
P051 = 40
Offline
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Online
P052 = 3
P051 = 40
Offline