Ohms And Slidewire Input Wiring; Relay Output Wiring; Local Instrument Link Wiring - Siemens Moore 353 User Manual

Installation

8.4.7 Ohms and Slidewire Input Wiring

Function blocks AINU1 and AINU2 can be configured for ohm or slidewire inputs. Figures 8-19 and 8-20 show
the needed connections.
Controller Terminals
45
46
Ohms
Source
47
48
Note: See Table 8.1 for AINU2 terminals.
FIGURE 8-19 Universal Analog Input AINU1,
Ohms Input

8.4.8 Relay Output Wiring

Function blocks ROUT1 and ROUT2 are located on the I/O Expander board. They provide two single-pole,
double-throw relay outputs, as shown in Figure 8-21. Relay contact ratings are stated in Section 14.6.
The load connected to a closed contact should draw a current between the minimum and maximum contact ratings.
A resistive load is recommended. An inductive or capacitive load can cause high peak currents or contact arcing
which can pit or otherwise damage contacts. The arcing associated with an inductive load can be limited by
connecting a voltage transient suppressor, such as a 1N4005 diode, across the load.
FIGURE 8-21 Universal Relay Outputs ROUT1 and 2, Resistive Load

8.4.9 Local Instrument Link Wiring

The Local Instrument Link (LIL) is a high performance digital data link that carries commands and responses
between user-selected stations. Each station must be identified by a unique link address. This address permits
commands and responses to be sent from one station to another specific station. Lower link addresses are 1 through
32. A Model 321 Expansion Satellite is used to add an upper link with addresses 33 through 64. In the Moore 353,
the Station address is entered as the ADDRESS parameter in the STATN function block. Specific instructions for
8-20
Isolated
Power
Universal
Converter,
Isolated
Inputs
Isolated
Ground
X03119S1
Model 353
Rear Terminals
NC
ROUT1
NO
NC
ROUT2
NO
Controller Terminals
45
Position
46
Universal
Slidewire
Converter,
Isolated
47
Inputs
48
Note: See Table 8.1 for AINU2 terminals.
FIGURE 8-20 Universal Analog Input AINU1,
Slidewire Input
Load
27
_
+
28
29
External
Power
Supply
30
_
+
31
32 Load
X03120S0
UM353-1
Isolated
Power
Isolated
Ground
X03113S1
March 2003