S5-115F Manual
Rules Governing the Use of the S5-115F
10.11.3
Type 15 Analog Input Modules
Type 15 analog input modules have the following characteristics:
•
Safety-related
•
The AI signal needs not be intermittent.
•
They are plugged into subunits A and B (two-channel configuration) and must have the same
address in both subunits.
•
Check relay digital output modules and check analog output modules can be assigned to
either subunit A or B.
However, both check modules must be plugged into the same subunit.
458 - 7LA
CH Rel DQ
with tetrad bits
3
2
1
0
AI
As in
subunit A
463-4U.AI
0 to 10 V
Subunit A
Subunit B
458 - 7LA
CH Rel DQ
with tetrad bits
3
2
1
0
-
7LA, + - 10 V
- 7LB, + - 10 V
470 CH AQ
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
a a a a
Analog
value
sensor: V
Analog
value
sensor: V
Figure 10-27. Type 15 AI, Safety-Related, Non-Intermittent: Two-Channel Sensor with
Voltage Output
Explanation of Figure 10-27
A tetrad of the CH Rel DQ is used for connection. Bits 0 and 1 are used for connecting the sensor
and bits 2 and 3 for the 470 check AQ.
In normal sensor operation, the tetrad (controlled by the operating system) has the value 0011.
EWA 4NEB 811 6148-02
10-43
