Epson T-B Series Manual page 75

(7) I/O (Input) connector
(8) I/O (Output) connector
(9) AC power connector
3.7.2 Noise Countermeasures
To minimize electrical noise conditions, the following items must be observed in the
system's cable wiring:
- The earth wire of the power supply should be grounded. (Ground resistance: 100 Ω or
less) It is important to ground the frame of Manipulator not only for prevention from
electric shock, but also for reducing the influence of electric noise around the
Manipulator. Therefore, be sure to connect the earth wire (yellow/green) of the
Manipulator's power cable to the ground terminal of the factory power supply. For details
about the plug and AC power cable, refer to " 3.6 Power Supply".
- Do not tap power from a power line that connects to any equipment which may cause
noise.
- Do not run AC power lines and DC power lines in the same wiring duct, and separate
them as far as possible. For example, separate the AC motor power line and the
Manipulator power line as far as possible from the sensor or valve I/O lines; and do not
bundle both sets of wiring with the same cable tie. If more than one duct/cable must cross
each other, they should cross perpendicularly. The preferable example is shown in the
right figure.
- Wire as short as possible to the I/O connector and EMERGENCY connector. Use a
shielded cable and clamp the shield to the attached connector interior. Make sure to keep
away from the peripheral noise source as far as possible.
- Make sure that the induction elements used to connect to the Manipulator's I/O (such as
relays and solenoid valves) are noise suppression parts. If an induction element without
protection against noise is used, make sure to connect a noise suppression part such as a
diode located at the induction element in parallel with it. In selecting noise suppression
parts, make sure that they can handle the voltage and current incurred by the induction
load.
- As they are easily influenced by noise, keep cable such as USB, Ethernet, or fieldbus
away from peripheral noise sources.
T-B series Rev.1
T3-B T6-B Manipulator 3. Environments and Installation
This input connector is for output device of the user.
When there is output device, use this connector.
For details, refer to "12. Standard I/O connector".
This output connector is for input device of the user.
When there is input device, use this connector.
For details, refer to "12. Standard I/O connector".
Connector for AC power supply to the manipulator.
AC Line duct
DC line duct
As far as possible
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