Siemens NCU 7x0.3 PN Series Manual page 132

Connectable components
9.3 PP 72/48D 2/2A PN
Wiring analog inputs/outputs
CAUTION
Shield connection
If the analog inputs/outputs are wired, a shielded lead must be used. The shield must be
supported.
Procedure:
1. Strip cable for analog signals.
2. Secure the stripped connection piece of the cable with the shield connection clamp.
X3 pin assignment
Table 9- 47
Pin
1
2
3
4
5
6
7
8
9
10
11
12
The analog signal to be measured is connected to the terminals AI 1+/- and AI 2+/-. AI stands for
Analog inputs
The module has two analog inputs. These can optionally be assigned parameters as voltage,
current or PT100 input.
NOTICE
The analog inputs are only enabled following the parameter assignment.
Cycle time of the analog value accumulation: 20 ms per channel
132
Pin assignment (standard)
Signal name Signal type
CO1 O
CI1 I
AI1+ I
AI1- I
CO2 O
CI2 I
AI2+ I
AI2- I
AO3+ O
AO3- O
AO4+ O
AO4- O
"Analog Input". The CO "Current Output" and CI "Current Input" terminals supply the constant
current for the 4-wire measurement of PT100 elements.
Meaning
Channel 1 current output for PT100
Channel 1 current input for PT100
Channel 1 analog input +
Channel 1 analog input -
Channel 2 current output for PT10
Channel 2 current input for PT100
Channel 2 analog input +
Channel 2 analog input -
Channel 3 current and voltage output +
Channel 3 current and voltage output -
Channel 4 current and voltage output +
Channel 4 current and voltage output -
Manual, 09/2011, 6FC5397-1EP40-0BA0
NCU 7x0.3 PN