Technical/Programming Manual
FT1020G3 Rev 2.2.1
73
10.1
Control Unit Inputs I
0
76
-I
3
Normally Open (R > 20K) or Normally Closed (R < 500
)
Activation time: > 1 sec.
Connections, see drawings F732-02.
10.2
Inputs 0-4 on expansion board 4583
For connections, see drawings F731.
10.2.1
Not supervised
Normally Open (R > 20K) or Normally Closed (R < 500
)
Activation time: > 10 sec.
10.2.2
Supervised
Each supervised input can be in one of four different states shown in Table 10:
Open circuit (cut-off)
Not activated (quiescent)
Activated
Short-circuit
Depending on the selected logic, Normally Open (high resistance)
or
Normally Closed (low
resistance), the four conditions in the table are valid.
Table 10 State of the Supervised Inputs 0-4
Line resistance R
Normally Open
(high resistance)
Normally Closed
(low resistance)
R > 6K8
Open circuit (cut-off)
Open circuit (cut-off)
6K8 > R > 2K (nom. 3K3)
Not activated
Activated
2K > R > 70 (nom. 680)
Activated
Not activated
R < 70
Short-circuit
Short-circuit
Input line fault
If open circuit (cut-off) or short-circuit is detected on a supervised input, a fault will be
generated in FT1020G3 and the following fault message will be displayed:
FAULT: Input x expansion board x,
Control Unit xx
10.3
The 3361 unit Inputs In
0
/ Z & In
1
Connections, see drawings F733 and F735.
76
Input I0 in the New Zealand convention cannot be programmed, it is used to restart the software when the processor freezes
as required by NZS4512.
