Technical information

45
MITSUBISHI ELECTRIC
MICRO CONTROLLERS
MICRO CONTROLLERS ///
Calculation of the Power Consumption
Module
No.
24 V DC calculation 5 V DC calculation
Current / module Calculation Current / module Total current
FX2N-80MR-ES 1 460mA +460 mA +290 mA +290 mA
FX2N-4AD 3 50mA -150mA 30mA -90mA
FX2N-4DA 2 200 mA -400 mA 30 mA -60mA
FX2N-232IF 1 80 mA -80 mA 40 mA -40 mA
-170 mA !!! 290 – 190 mA
Result:
100 mA (OK !)
The tables below and on the right show
different examples for sample power
calculation for a PLC system.
The current values for the special function
modules can be found in the specifications
on the following pages.
Comparison with the current value tables
show that the c alculated figures for the
5 V bus lie within the allowable ranges.
In the example below all units can be
supplied sufficiently with the internal
24 V power supply.
Sample Calculations
Module
No.
Number of I/Os 24 V DC calculation 5 V DC calculation
XYX/YTotal
햲
Total current
햳
Current / module Total current
FX2N-48MR-ES/UL 1 24 24 —
X=8
Y=24
➞
+185 mA
290 mA +290 mA
FX2N-16EYR-ES/UL 1 — 16 — — 0 mA
FX2N-8EX-ES/U L 1 8 — — — 0 mA
FX2N-8EYR-ES/UL 1 — 8 — — 0mA
FX0N-3A 1 — — 8 -90mA 30 mA -30 mA
+95 mA (OK!) +260 mA (OK!)
FX2N-32ER-ES/UL 1 16 16 —
X=16
Y=0
➞
+150 mA
690 mA +690 mA
FX2N-16EX-ES/UL 1 16 — — — 0mA
FX2N-4AD 1 — — 8 50 mA 30 mA -30 mA
FX2N-1HC 1 — — 8 0mA 90mA -90mA
Result:
64 + 64 + 24 = 152 ! (< 256) OK!
+100 mA (OK!) +570 mA (OK!)
햲
Total no. of I/Os which are connected to a base unit to calculate the max. residual current values (see tables)
햳
see tables above (max. residualcurrent values)
An ex ternal 24 V power supply has to
be added in the example above.
The power consumption figures on the 5 V DC
bus for the s pecial function modules are shown
in the specifications tables on the following
pages.
The m aximum permissib le currents on the
5VDCand24VDCbusareshowninthetable
below.
Theresidualcurrentsforthe24VDCservice
voltage at different input/output configurations
areshowninthetablesontheright.
A maximum of 256 I/Os is possible.
Modules Max. current
5Vbus 24Vbus
FX2N-16/32M첸-ES(ESS) 290mA 250 mA
FX2N-48–128M첸-ES(ESS) 290 mA 460 mA
FX2N-32E첸-ES(ESS) 690 mA 250 mA
FX2N-48E첸-ES(ESS) 690 mA 460 mA
FX3U-16/32M첸-ES(ESS) 500 mA 400 mA
FX3U-48–128M첸-ES(ESS) 500 mA 600 mA
FX3UC-16MT/D(DSS) 600 mA —
FX3UC-32MT/D(DSS) 560 mA —
FX3UC-64MT/D(DSS) 480 mA —
FX3UC-96MT/D(DSS) 400 mA —
Max. residual current values (in mA) for FX2N-16M첸-E첸첸 through FX2N-32M첸-E첸첸,
FX
2N-32E첸-E첸첸 for the permissible configuration
Max. residual current values (in mA) for FX
2N-48M첸-E첸첸 through FX2N-128M첸-E첸첸,
FX
2N-48E첸-E첸첸 for the permissible configuration
Special func tion modules have to be supplied ex ternally, if the residual current for the service volt-
age is not satisfying.
Number of
additional
outputs
24
25
16
100 50 0
8
175 125 75 25
0
250 200 150 100 50
0 8 16 24 32
Number of additional inputs
Number of
additional
outputs
48
10
40
85 35
32
160 110 60 10
24
235 185 135 85 35
16
310 260 210 160 110 60 10
8
385 335 285 235 185 135 85 35
0
460 410 360 310 260 210 160 110 60
0 8 16 24 32 40 48 56 64
Number of additional inputs
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