5 Wiring
28
FX
3U
-20SSC-H Positioning Block User's Manual
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 port, input connectors, power connectors or
optical 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 or damage to the product.
WIRING PRECAUTIONS
•
Connect the PC power supply wiring to the dedicated terminals described in the manual.
If an AC power supply is connected to a DC input terminal or DC power supply terminal, the product will burn out.
•
Perform class D grounding (grounding resistance: 100
Ω
or less) to the grounding terminal on the 20SSC-H with a wire as thick as
possible.
Do not use common grounding with heavy electrical systems (refer to subsection 5.2.2).
•
Make sure to attach the top cover, before turning on the power or initiating operation after installation or wiring work.
Failure to do so may cause electric shock.
•
Connect the inputs of the 20SSC-H to the dedicated connectors described in the manual.
If an AC power supply is connected to a DC iput terminal or DC power supply terminal, the product will burn out.
•
Do not wire vacant terminals externally.
Doing so may damage the product.
•
When drilling screw holes or wiring, make sure that cutting and wiring debris do not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
•
Make sure to properly wire to the FX Series terminal blocks in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or damage to the product.
-
The disposal size of the cable end should follow the dimensions described in the manual of the PLC main unit.
-
Tightening torque should follow the specifications in the manual of the PLC main unit.
•
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.)
•
Put the SSCNET III cable in the duct or fix the cable at the closest part to the 20SSC-H with bundle material in order to prevent
SSCNET III cable from putting its own weight on SSCNET III connector. When laying cable, the optical cord should be given loose
slack to avoid from becoming smaller than the minimum bend radius, and it should not be twisted.
Also, fix and hold it in position with using cushioning such as sponge or rubber which does not contain plasticizing material.
When using adhesive tape to bundle, use flame-resistant acetate cloth adhesive tape (e.g. 570F by Teraoka Seisakusho Co., Ltd.).
