Mitsubishi Electric GOT2000 Series User Manual page 264

Be sure to shut off all phases of the external power supply used by the system before wiring.
Failure to do so may result in an electric shock, product damage or malfunctions.
When grounding the FG terminal and LG terminal of the GOT power supply section, note the
following points.
Not doing so may cause an electric shock or malfunction.
• GT27, GT25, GT23, GT2107, GT2105-Q
Make sure to ground the FG terminal and LG terminal of the GOT power supply section solely for
the GOT (ground resistance: 100 Ω or less, ground cable diameter: 1.6 mm or more). (GT2705-V,
GT25-W, GT2107 and GT2105-Q do not have the LG terminal.)
• GT2104-R, GT2104-P, GT2103-P
Make sure to ground the FG terminal of the GOT power supply section with a ground resistance of
100 Ω or less. (For GT2104-PMBLS and GT2103-PMBLS, grounding is unnecessary.)
Correctly wire the GOT power supply section after confirming the rated voltage and terminal
arrangement of the product.
Not doing so can cause a fire or failure.
Tighten the terminal screws of the GOT power supply section in the specified torque range.
Undertightening can cause a short circuit or malfunction.
Overtightening can cause a short circuit or malfunction due to the damage of the screws or the GOT.
Exercise care to avoid foreign matter such as chips and wire offcuts entering the GOT.
Not doing so can cause a fire, failure or malfunction.
Plug the communication cable into the connector to be connected, and tighten the mounting screws
and the terminal screws in the specified torque range.
Undertightening can cause a short circuit or malfunction.
Overtightening can cause a short circuit or malfunction due to the damage of the screws or unit.
This section describes wiring to the GOT power supply section.
For the connection to a controller, refer to the following manual.
➠
For external dimensions of connection cable, refer to the following.
➠
8 - 2
GOT2000 Series Connection Manual For GT Works3 Version1 compatible for a controller used
13. APPENDICES
POINT POINT POINT
General preventive measures against noise
There are two kinds of noises: Radiated noise that is transmitted into the air and Conductive
noise that is directly transmitted along connected lines. Countermeasures must be taken
considering both kinds of noises and referring to the following 3 points.
(1) Protecting against noise
(a) Keep signal lines away from noise sources such as a power cable or a high-power drive
circuit.
(b) Shield the signal lines.
(2) Reducing generated noise
(a) Use a noise filter, etc. to reduce the level of the noise generated due to a source such as
a high-power motor drive circuit.
(b) Attach a surge suppressor on the terminal of the molded case circuit breaker (MCCB),
electromagnetic contactor, relay, solenoid valve, or induction motor to suppress the noise.
WARNING
CAUTION