LSIS XEC-DR64H User Manual

Chapter 9. Installation and Wiring
9-6
9.1.2 PLC heat calculation
(1) Power consumption of each part
(a) Power consumption of module
The power conversion efficiency of power module is about 70% and the other 30% is gone with
heat; 3/7 of the output power is the pure power consumption. Therefore, the calculation is as
follows.
• W
pw = 3/7 {(I5V X 5) + (I24V X 24)} (W)
I
5V : power consumption of each module DC5V circuit(internal current consumption)
I
24V: the average current consumption of DC24V used for output module
(current consumption of simultaneous On point)
If DC24V is externally supplied or a power module without DC24V is used, it is not applicable.
(b) Sum of DC5V circuit current consumption
The DC5V output circuit power of the power module is the sum of power consumption used by
each module.
• W
5V = I5V X 5 (W)
(c) DC24V average power consumption(power consumption of simultaneous On point)
The DC24V output circuit’s average power of the power module is the sum of power consumption
used by each module.
• W
24V = I24V X 24 (W)
(d) Average power consumption by output voltage drop of the output module(power consumption of
simultaneous On point)
• W
out = Iout X Vdrop X output point X simultaneous On rate (W)
I
out : output current (actually used current) (A)
V
drop: voltage drop of each output module (V)
Main unit
input
constant
Voltage
transformer
AC power
100V~240V
Comm.
Comm. output input Special
DC5V
DC24V
load
Iout Iin
I5V
I24V
AC power
100V~240V
DC
power
24V

LSIS XEC-DR64H Specifications

General

Brand	LSIS
Model	XEC-DR64H
Category	Controller
Language	English