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H5 -1
Chapter 5 Power Supply Wiring, Power Consumption
Calculation, and Power Sequence Requirements
FB
S
-PLC internally has three kinds of circuit: a 5VDC logic circuit, a 24VDC output circuit, and a 24VDC input circuit.
They are all powered by the built-in power supply of main/expansion units. Expansion modules other than
main/expansion units do not contain any power supply and are powered by the power supply inside the main/expansion
units or expansion power supply (FB
S
-EPOW). Main/expansion units or expansion power supply with their model
numbers suffixed with “-D” means is operated by DC power source. Otherwise, AC power source is used.
Note
In industrial environments, main power may irregularly experience a surge current or high voltage pulse
caused by the start or shut down of high power equipment. Users are advised to take necessary
measures (for example, the use of isolation transformer or other MOV suppression devices) for the
protection of PLC and its peripherals.
5.1
Specifications of AC Power Sourced Power Supply and Wiring
The available AC power supplies of FB
S
-PLC are the 14 Watt (POW-16) supply for 10/14 PTs main unit, the 24 Watt
(POW-24) supply for 20~60PTs main/expansion unit, and the 14 Watt expansion supply (FB
S
-EPOW) for expansion
modules. Except that the FB
S
-EPOW is an independent module, POW-14 and POW-24 are to be installed on a main
unit or inside an expansion unit, where their appearances are invisible. The following table lists the specifications:
Model
Item
POW-14
POW-24
FB
S
-EPOW
Voltage
100 ~ 240VAC -15% / +10%
Input Range
Frequency
50 / 60HZ -5% / +5%
Max. Power Consumption
21W
36W
21W
Inrush Current
20A@264VAC
Allowable Power Interrupt
20ms(min.)
Fuse Spec.
1A
,
250VAC
Isolation Type
Transformer/Photo Couple Isolation, 1500VAC/minute
5VDC(logic circuit)
N/A*
2
5V
,±
5%
,
1A(max) 5V
,±
5%
,
0.4A(max)
24VDC(output
circuit)
24V
±
10%
,
200mA(max)*
3
24V
,±
10%
,
400mA(max) 24V
,±
1%
,
250mA(max)
Power*
1
O
u
tput
24VDC(input circuit) 24V
,±
10%
,
400mA(max) 24V
,±
10%
,
400mA(max) 24V
,±
10%
,
250mA(max)
Note *
1
:
The 5VDC (for logic circuit) output power and the 24VDC (for output circuit) power can be accessed from the “I/O expansion
output header” located on the right side of the main/expansion units for expansion modules. And the 5VDC power is also
used by communication board (CBxx) or communication module (CMxx). The 24VDC power for input circuits is provided
from the farthest 2 upper left terminals (labeled “+24V OUT-”) on the input terminal block of main/expansion unit to input
circuit in expansion module or other sensors.
Note *
2
:
The 5VDC power of 10/14PTs main unit is generated from the 24VDC power in the output circuit, with specifications of
5VDC
±
10% and 400mA (max) (Circuit is located on the I/O board of 10/14PTs main unit).
Note *
3
:
Without any I/O expansion interface, the 24VDC power in 10/14PTs main unit is for its output circuit alone and cannot be
used for other purposes.
Spec
Содержание FBs Series
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