Rtd Input Wiring - Siemens 353 User Manual

Installation
Reference Junction for AINU1
Reference Junction for AINU2
Note:
Place Reference Junctions
against the connector
and as close to the
Connector Socket
Assembly as possible.
3. Check that all involved components and station wiring are fully inserted. Carefully tighten the terminal screws
to 5 in. lbs.
4. Repeat the above steps if the other AINU function block is to be used as a thermocouple input.

7.4.6 RTD Input Wiring

Wiring for 2-, 3-, and 4-wire RTDs is shown in Figure 7-15. Make connections as outlined in Section 7.4.1. Note
the wire jumper between terminals 47 and 48 when a 2-wire RTD is installed.
2-Wire
RTD
Note: See Table 7-1 for AINU2 terminals.
Figure 7-15 Universal Analog Input AINU1; 2, 3, and 4-Wire RTD Inputs
7-16
Connector Socket
Assembly
45 45
3-Wire
RTD
46 46
47 47
48 48
43
44
Analog Input Universal 1 a
45
46
47
Analog Input Universal 1 d
48
Analog Input Universal 2 a
49
50
51
Analog Input Universal 2 d
52
Controller Terminals
NC
45
4-Wire
RTD
46
Universal
Converter,
Isolated
47
Inputs
48
NC = No Connection
UM353-1B
Isolated
Power
Isolated
Ground
MG00513a
April 2012