Siemens 353 User Manual page 179

UM353-1B
External
Power
Source
Figure 7-7 Analog Inputs AIN1, 2, and 3; 4-Wire Transmitters
+
4-20 mA
Source _
3.75
Ground
Note: See Table 7-1 for AINU2 terminals.
A. 4-20 mA Input
2. 4-20 mA Input Only - Select a precision (0.1%) 250Ω (for AIN#) or 3.75Ω
(for AINU#) resistor from the installation kit and insulate the bent resistor lead
with a piece of sleeving. At the lead end, approximately 1/4" (6 mm) to 5/16"
(8 mm) of bare resistor lead should be exposed.
If a crimp-on connector is to be used, go to step 3. Otherwise, go to step 4.
April 2012
External Devices
+
Analog Signal,
4-Wire Transmitter,
_
4-20 mA Output
+
Analog Signal,
4-Wire Transmitter,
_
4-20 mA Output
+
Analog Signal,
4-Wire Transmitter,
_
4-20 mA Output
Common Ground Bus
Earth
* Or any station common terminal - see Table 7-1
Ground
Model 353
Rear Terminals
Isolated
45
Power
46
Universal
Converter,
Isolated
47
Inputs
Isolated
48 Ground
Figure 7-8 Universal Analog Input AINU1
Model 353
Rear Terminals
1-5 Vdc
20
250
18*
1-5 Vdc
22
250
21*
1-5 Vdc
23
250
24*
6
for additional station common terminals
+
Millivolt
Source
_
Ground
Note: See Table 7-1 for AINU2 terminals.
MG00508a
Installation
MG00604a
AIN1
AIN2
AIN3
Station Common
Model 353
Rear Terminals
Isolated
45
Power
46
Universal
Converter,
Isolated
47
Inputs
Isolated
48 Ground
B. Millivolt Input
0.8"
Place sleeving
(20.3mm)
on this lead.
0.5"
(12.7mm)
MG00509a
7-11