Siemens SIMOTRAS 6SG7050, Operating Instructions Manual

Page: 404 / 604

Parameter list 01.04
11-56
SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
PNU Description Value range
[Unit] No. indices See
Change
P707
*
(G113)
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
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.
11 to 14
[Bit]
1 bit Ind: None
FS=12
Type: O2 P052 = 3
P051 = 40
Offline
Analog input terminals 6 / 7 (analog selectable input 1)
P710
*
(G113)
Signal type of "Analog selectable input 1"
0 = Voltage input 0 to
±
10 V
1 = Current input 0 to
±
20 mA
2 = Current input 4 to 20 mA
0 to 2
1 Ind: None
FS=0
Type: O2 P052 = 3
P051 = 40
Offline
P711
FDS
(G113)
Normalization of "Analog selectable input 1"
This parameter specifies the percentage value which is generated for an
input voltage of 10V (or an input current of 20mA) at the analog input.
The following general rule applies:
With a voltage input:
P V
Y
X
711 10 [%]
= ∗
X .. Input voltage in volts
Y .. % value which is generated for input
current X
With a current input:
P mA
Y
X
711 20 [%]
= ∗
X .. Input current in mA
Y .. % value which is generated for input
current X
-1000.0 to 1000.0
[%]
0.1% Ind: 4
FS=100.0
Type: I2 P052 = 3
P051 = 40
Online
P712
(G113)
Offset for "Analog selectable input 1" -200.00 to 199.99
[%]
0.01% Ind: None
FS=0.00
Type: I2 P052 = 3
P051 = 40
Online
P713
*
(G113)
Mode of signal injection at "Analog selectable input 1"
0 = Injection of signal with sign
1 = Injection of absolute value of signal
2 = Injection of signal with sign, inverted
3 = Injection of absolute value of signal, inverted
0 to 3
1 Ind: None
FS=0
Type: O2 P052 = 3
P051 = 40
Offline