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Hardware functions
5. In current measurement (measuring range -12 to 100 mA), all input signals X
must be multiplied with the current shunt R
values X
Example: (mA signal corresponds to physical height [m])
X
: 10 mA ->
1
X
: 70 mA ->
2
X
: 80 mA ->
n
The input values X
unit mV.
(X
SKL,1
NOTE
A special characteristic is used device-internally when the U/I input plug is used.
This overwrites an existing special characteristic in the device.
When operating the device with SIMATIC PDM, the PDM-Device Description Rev. 2
of SITRANS TW is required. (SIMATIC PDM 5.2 already contains the PDM-DD
Rev. 2. An update for SIMATIC PDM 6.0 is available under
www.siemens.com/sitranst
3.7.5
Order
•
Add the code S03 to the order number of the SITRANS TW or
•
order as an accessory with order number 7NG3092-8AW
98
must be specified in the unit mV.
SKL,i
Sensor signal
X
->
X
(input values)
i
SKL,i
X
:
100 mV
SKL,1
X
:
700 mV
SKL,2
X
:
800 mV
SKL,n
must be entered in the
SKL,i
= 10 mA x 10 Ω = 10 mA x 10 V/A = 100 mV)
= X
x R
1
S
(-> Support / -> Software Downloads).
= R3 = 10 Ω. The characteristic input
S
Linearized signal
Y
(input values)
SKL,i
Y
:
1**
SKL,1
Y
:
5**
SKL,2
Y
:
7**
SKL,n
** corresponds to [m]
i
SITRANS TW
A5E00054075-05
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