FATEK FBs-B2DA - Structure and Wiring of 5 VDC Ultra High Speed Differential Input Circuit

H6-2
6.2 Structure and Wiring of 5VDC Ultra High Speed Differential Input Circuit
Only the MN main unit of FBs provides the 5VDC ultra high speed differential input circuit, which is mainly used for the
input of hardware high speed counter (HHSC) with a maximum working frequency up to 920 KHz. In practice, to ensure
the high speed and high noise immunity, please use Line-Driver for differential line driving. In environments with small
noise and medium working frequency (＜200KHz), however, it can be changed to the 5VDC single-end SINK or
SOURCE input or to the 24VDC single-end SINK or SOURCE input by connecting a 3KΩ/0.5W resistor in series, as
shown in the figure below.
(A) Wiring of 5VDC differential input for Line-Driver driving（with frequency up to 920KHz for high speed and
environments with large noise
）
雙端輸入
隔離雙絞線
FBS-MN主機
Line-Driver輸出
B
感應器輸出
A
(B) Wiring of 5VDC differential input to 5VDC single SINK or SOURCE input
X1+
X1
X0
X0+
PNP
SENSOR
SOURCE
輸入
NPN
SENSOR
SINK 輸入
5VDC
R1
R2
R1
R2
FBS-MN main unit
(C)
Method of converting 5VDC differential input to 24VDC single-end SOURCE input
Twisted-pair
(Encoder)
External differential output FBs-MN main unit
Dual-end input
SOURCE
input
SINK input
SOURCE輸入
X1
X1+
X0
X0+
FBS-MN主機
24VDC
3KΩ/0.5W
PNP
SENSOR
3KΩ/0.5W
SINK
輸入
NPN
SENSOR
R1
R2
R1
R2
FBs-MN main unit
SINK input
SOURCE
input
R1:100Ω
R2:1.2KΩ