FATEK FBs-4A2D - Chapter 6: Digital Input (DI) Circuit; 6.1 Specifications of Digital Input (DI) Circuit

H6-1
Chapter 6 Digital Input (DI) Circuit
The FBS-PLC provides the ultra high speed differential double end 5VDC inputs (i.e., single input with two terminals
without common) and the single-end 24VDC inputs which use the common terminal to save terminals. The response
speeds of single-end common input circuits are available in high, medium and low. Because the double end input
circuit has two independent terminals, it can be connected either in SINK or SOURCE (we will use the term SRCE) for
input or in differential input wiring for line driver source. The single-end input circuit can be set to SINK or SRCE type
by varying the wiring of the common terminals S/S inside PLC and external common wire of input circuits (see Sec. 6.3
for details).
6.1 Specifications of Digital Input (DI) Circuit
5VDC
Differential
Input
24VDC Single-end Input
Item
Specifications
Ultra High
Speed(HSC)
920KHz
High
Speed(HSC)
100KHz
Medium
Speed(HSC)
20KHz*
1
Mid/Low Speed
470μS*
2
Low Speed
(200Hz)
Note
Input Signal Voltage 5VDC±10% 24VDC±10%
ON Current
＞6 mA ＞4mA ＞2.3mA
Input
Current
Thresho
ld
OFF Current
＜2 mA ＜1.5mA ＜0.9mA
Maximum Input current 20mA 7mA 4.2 mA
Input Status Indication Displayed by LED: Lit when “ON”, dark when “OFF”
Isolation Type Photo coupler signal isolation
SINK/SRCE Wiring Independent Wiring
Via variation of internal common terminal S/S
and external common wiring
FBS-20MN X0,1 X2~11
FBS-32MN X0,1,4,5 X2,X3,X6~15 X16~19
FBS-44MN
X0,1,4,5,8,9,1
2,13
X2,3,6,7,10,11,
14,15
X16~27
FBS-10MC X0,1 X2~5
FBS-14MC X0,1 X2~7
FBS-20MC X0,1 X2~11
FBS-24MC X0,1 X2~13
FBS-32MC X0,1 X2~15 X16~19
FBS-40MC X0,1 X2~15 X16~23
FBS-60MC X0,1 X2~15 X16~35
FBS-10MA X0~3 X4~5
FBS-14MA X0~3 X4~7
FBS-20MA X0~3 X4~11
FBS-24MA X0~3 X4~13
FBS-32MA X0~3 X4~19
FBS-40MA X0~3 X4~23
FBS-60MA X0~3 X4~35
*
1
：Limit of input
speed in MA
model is
10KHz
List of Input Response Speed for Various Models
Expansion
Unit/Module
All Input
Points
Noise Filtering Time
Constant*
3
DHF(0ns ~ 15ms)
＋AHF(470ns)
DHF(0 ~ 15ms)
＋AHF(470μs)
AHF(4.7ms)
DHF：Digital
Hardware Filter
AHF：Analog
Hardware Filter
* ： The standard product of MC-type High-Speed input is 2 points, it can extend to 3~8points (Option). Every increment one High-speed
input point, and decrement one Middle-speed input point relatively. Only X4~X5,X8~X9 and X12~X13 input can be extended, and
the priority is low serial-number to High serial-number.