IDEC MICROSmart FC6A Series User Manual page 222

3: I
NSTALLATION AND
When the FC6A-R081 or FC6A-PC4 is connected to the Plus CPU module or an expansion interface module
Calculate the voltage conversion in the CPU module and expansion interface module with the following efficiencies.
Plus CPU module
24V DC
75%
90%
For the FC6A-R081
5 V
( I × V )
out out
P = + ( I
R081
0.75
0 A × 3.3 V
( )
+ ( 0.035 A × 5 V )
0.9 × 5 V
=
0.75
≈ 1.39 [W]
*1
For the FC6A-PC4
I × 3.3 V
{ ( )
out
+ I
0.9 × 5 V
P =
PC4
0.75
0.035 A × 3.3 V
{ (
0.9 × 5 V
=
0.75
≈ 0.97 [W]
*1 Cartridges cannot be connected to expansion interface modules.
■ Example 1 of Calculating the Power Consumed by the Main Power Supply
This example shows how to calculate the power consumed by the main power supply when the expansion module, HMI module,
and cartridge in the below diagram are connected to the 16-I/O type.
Example:
FC6A-PH1 FC6A-C16R1AE
FC6A-PJ2A
FC6A-C16R1AE
FC6A-PC4
FC6A-R081
FC6A-PH1 + FC6A-PJ2A :
*1 For the power consumption of each CPU module alone, see "Product Specifications" on page 2-1.
3-40
W
IRING
P [W]
in
24 V (Internal)
5 V (Internal)
3.3 V (Internal)
24 V
× 24 V )
out
+ ( 0.006 A × 8 points × 24 V )
}
× 5 V
out
) }
+ 0.12 A × 5 V
FC6A-R081
FC6A-PC4
P [VA]
in
: 33 [VA] when alone
0.035 A × 3.3 V
{ (
:
0.9 × 5 V
( 0.035 A × 5 V ) + ( 0.006 × 8 points × 24 V )
:
( 0.17 A × 5 V ) + ( 0.015 A × 24 V )
P ≈ 33 + 1.04 + 1.9 + 1.73
in
≈ 37.67 [VA]
FC6A S MICROS
ERIES
Expansion interface module (Expander) (FC6A-EXM2)
Expansion interface module (remote master/slave) (FC6A-EXM1M and
FC6A-EXM1S)
24V DC
75%
*1
) }
+ 0.12 A × 5 V
≈ 1.04 [VA]
0.7
0.7
≈ 1.73 [VA]
0.7
U ' M FC9Y-B1722
MART SER S ANUAL
P [W]
in
24 V (Internal)
5 V (Internal)
≈ 1.9 [VA]