FPΣ User's Manual
4.2 FPΣ I/O Expansion Units
45
Limitations on the number of input points that are TRUE simultaneously
Keep the number of input points per common which are simultaneously TRUE within the
following range as determined by the ambient temperature.
Input: Output:
32
52 55
29
y
x
32
29
52 55
y
x
x
Ambient temperature [°C]
y
Number of points per common which are simultaneously TRUE
1
At 24V DC and at 26.4V DC
Internal circuit diagram
Input:
COM
Xn
R2
R1
1
Internal circuit
2
Inside
R1
6.8kΩ
R2
820Ω
Output (NPN):
-
+
Yn
24V DC
5-24V DC
1
Internal circuit
5
External power supply
2
Output circuit
6
Load power supply
3
Output indicator LED
7
Short circuit prevention circuit
4
Load