FX
3U
Series Programmable Controllers
User’s Manual - Hardware Edition
461
20 FX-16/32E*-*-TB (Terminal Block)
20.9 FX-16EYS-TB
11
Hi
gh
-Speed
Counters
12
O
utput W
iri
ng
13
W
iri
ng for
V
ari
ous
Us
es
14
Te
st R
un,
Mai
nten
ance,
T
roubl
es
hooti
ng
15
IInput/Output
Pow
ered
Exte
nsi
on U
nit
s
16
Input/O
utput
Extens
ion
Bl
ock
s
17
Extension
Power Suppl
y
Un
it
18
Other Extens
ion
Uni
ts an
d
Opti
ons
19
D
isplay M
od
ule
20
Te
rminal
Bl
oc
k
20.9.4 External wiring precautions
1. Protection circuit for load short-circuits
A short-circuit at a load connected to an output terminal could cause
burnout at the output element or the PCB. To prevent this, a
protection fuse should be inserted at the output.
2. Micro current load
The PLC’s internal Triac output circuit is equipped with a turn-off C-
R absorber. When connecting a very low current load of "0.4VA/
100V AC or less or 1.6 VA/200V AC or less", please connect a
surge absorber parallel to the load.
Select the rated voltage of a surge absorber that is suitable for the
load being used. Refer to the table below for other specifications.
Reference
3. Interlock
For loads such as forward/reverse contactors, etc., where
a hazardous condition could result if switched ON
simultaneously, an external interlock should be provided
for interlocking the PLC’s internal programs as shown to
the right.
4. In-phase
PLC output contacts (*) should be used in an "in-phase"
manner.
Item
Guide
Static electricity capacity
Approx. 0.1
µ
F
Resistance value
Approx. 100 to 200
Ω
Manufacturer
Model name
Manufacturer
Model name
Okaya Electric Industries Co., Ltd. CR-10201
Rubycon Corporation
250MCRA104100M B0325
Terminal block
0 to 7
COMn
Load
Fuse
Micro current load
Surge
absorber
U
Interlock
PLC output
element
Forward limit
Reverse limit
Forward
Reverse
U
U
U
*
*
*
*
U
U
U
Bad
Good
Summary of Contents for FX2-16E series
Page 2: ......
Page 8: ... 6 Safety Precautions Read these precautions before use MEMO ...
Page 519: ......
