Rules Governing the Use of the S5-115F
S5-115F Manual
10.11.2 Type 14 Analog Input Modules
Type 14 analog input modules have the following characteristics:
•
Safety-related.
•
Non-intermittent input signal.
•
They are plugged into subunits A and B (two-channel configuration) and must have the same
module address in both subunits.
•
Check relay digital outputs and check analog outputs can be assigned to either subunit A or B.
However, both check modules must be plugged into the same subunit.
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
AI
As in
subunit A
Single-channel sensors must
be p e r m a n e n t l y f a i l s a f e
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 a
a a a a
a a a a
Analog
value
sensor: V
Figure 10-23. Type 14 AI, Safety-Related, Non-Intermittent: Single-Channel Sensor with
Voltage Output
Explanation of Figure 10-23
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 connecting the 470 check AQ module.
The tetrad (controlled by the operating system) has the value 0011 in normal sensor operation.
10-40
EWA 4NEB 811 6148-02
