Mitsubishi FX3U-32DP, User Manual

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23
FX
3U
-32DP PROFIBUS-DP Interface Block
User’s Manual
3 Installation
1
Int
roduct
ion
2
Specifi
cations
3
Inst
al
lati
on
4
Wi
rin
g
5
C
omm.
Out
lin
e on
PRO
FIB
US-
D
P
Ne
two
rk
6
B
uff
er M
em
ory
Al
loc
ati
on
7
Para
mete
r S
ett
ing
an
d N
etw
or
k
C
onf
igu
rat
ion
8
E
xam
ple
P
rogr
am
9
D
iagnos
tics
3. Installation
DESIGN PRECAUTIONS
• Make sure to have the following safety circuits outside of the PLC to ensure safe system operation even during
external power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection circuit, an interlock circuit for
opposite movements (such as normal vs. reverse rotation), and an interlock circuit (to prevent damage to the
equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all
outputs are turned off. Also, when an error that cannot be detected by the PLC CPU occurs in an input/
output control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, the output could be held either on or off.
For output signals that may lead to serious accidents, external circuits and mechanisms should be designed
to ensure safe machinery operation in such a case.
DESIGN PRECAUTIONS
• Make sure to observe the following precautions in order to prevent any damage to the machinery or accidents
due to abnormal data written to the PLC under the influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the main circuit, high-voltage line, or load
line. Otherwise, noise disturbance and/or surge induction are likely to take place. As a guideline, lay the
control line at least 100mm (3.94") or more away from the main circuit, high-voltage line, or load line.
2) Ground the shield wire or shield of the shielded cable at one point on the PLC. However, do not ground them
at the same point as the high-voltage lines.
• Install module so that excessive force will not be applied to peripheral device connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
INSTALLATION PRECAUTIONS
• Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock.
INSTALLATION PRECAUTIONS
• Use the product within the generic environment specifications described in the PLC main unit manual (Hardware Edition).
Never use the product in areas with dust, oily smoke, conductive dusts, corrosive gas (salt air, Cl
2
, H
2
S, SO
2
, or
NO
2
), flammable gas, vibration or impacts, or exposed to high temperature, condensation, or wind and rain.
If the product is used in such conditions, electric shock, fire, malfunction, deterioration or damage may occur.
• Install the product securely using a DIN rail or mounting screws.
• Install the product on a flat surface.
If the mounting surface is rough, undue force will be applied to the PC board, thereby causing nonconformities.
• When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
• Be sure to remove the dust proof sheet from the PLC's ventilation port when the installation work is completed.
Failure to do so may cause fires, equipment failures, and malfunctions.
• Connect the extension and communication cables securely to their designated connectors.
Unsecured connection may cause malfunctions.
• Do not touch the conductive parts of the product directly to avoid failure or malfunction.