Wiring - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
5.

Wiring

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 or high-voltage lines.
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 the built-in programming connectors, power connectors or I/O connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
WIRING 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.
WIRING PRECAUTIONS
• Use class D grounding (grounding resistance of 100Ω or less) with wire as thick as possible on the grounding terminal of the 20SSC-
H. However, do not connect the ground terminal at the same point as a heavy electrical system.
• Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation after installation or
wiring work. Failure to do so may cause electric shock.
• Make sure to connect cables and wires to the power/signal inputs of the 20SSC-H as described in this manual. Connecting AC power
cables with DC power sources or DC I/O terminals will burn out the hardware components.
• Do not wire vacant terminals externally. Doing so may damage the product.
• When drilling screw holes or wiring, make sure cutting or wiring debris does not enter the ventilation slits.Failure to do so may cause
fire, equipment failures or malfunctions.
• Make sure to properly wire the FX Series terminal blocks in accordance with the precautions below in order to prevent electric shock,
a short-circuit, wire breakage, or damage to the product.
- The disposal size of the cable end should follow the dimensions described in this manual.
- Tightening torque should be between 0.5 and 0.8 N
• Do not wire or bundle the SSCNET III cables together with or lay them near a main circuit cable, high-voltage line, or load lines
separate from the PLC. As a guideline, lay the SSCNET III cables at least 100mm (3.94") or more away from power lines. Failure to
do so may cause surge induction and/or noise disturbance.
• Optical fiber end face defects that are caused from contaminants may deteriorate the signal transmission rate and cause malfunction.
When removing the SSCNET III cabling from the 20SSC-H port, make sure to attach the protective caps to the cable connectors and
ports.
• Do not remove the SSCNET III cable from its port while the power is ON for the 20SSC-H or Servo Amp. Do not look directly into the
optical fiber cable ends or SSCNET III ports, as doing so may cause eye damage. (The laser for SSCNET III communication complies
with Class 1 as defined in JISC6802 and IEC60825-1)
• When handling the SSCNET III cables, do not expose them to strong impact, lateral pressure, excessive pulling tension, abrupt
bending or twisting. Failure to do so may crack the glass fiber and cause signal transmission loss. Note that a short SSCNET III cable
is highly susceptible to twisting.
• Make sure to use the SSCNET III cable within the allowable temperature range (as shown in subsection 5.1.1). Do not expose the
SSCNET III cabling to fire or excessive heat. Avoid contact with high temperature components such as the servo amplifier radiator,
regenerative brake and servo motor.
• Do not force the SSCNET III cable into a bend radius smaller than the minimum allowable bend radius. (Refer to subsection 5.4.1
Precautions for the SSCNET III cable wiring.)
• When connecting the SSCNET III cable to the cable port, place the cabling inside a cable duct or bundle it as close to the 20SSC-H as
possible to avoid the cable from applying its own weight on the SSCNET III connector.
• Do not bundle or bring the SSCNET III cable in contact with other cables or with vinyl tape that contains plasticizing agents (i.e. Soft
Polyvinyl Chloride [PVC]/Polyethylene resin [PE]/Teflon [Fluoro resin]/Nylon). Plasticizing agents may infiltrate the SSCNET III cable
and deteriorate the optical fiber; thereby causing the wire to break and become damaged. Use flame-resistant acetate cloth adhesive
tape (e.g. 570F by Teraoka Seisakusho Co., Ltd.).
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5 Wiring