Toshiba VF-A7 - Manual (Page 4)

3
Usage Precautions
• Please use the ETH-100 only when the ambient temperature of the
environment into which the ETH-100 is installed is within the following
specified temperature limits:
Operation: -10
∼ +50 ° C (+14 ∼ +122 ° F)
Storage: -40 ∼ +85 ° C (-40 ∼ +185 ° F)
• Avoid installation locations that may be subjected to large shocks or vibrations.
• Avoid installation locations that may be subjected to rapid changes in
temperature or humidity.
Operating Environment
• Do not touch charged parts of the drive such as the terminal block while the
drive’s CHARGE lamp is lit. A charge will still be present in the drive’s internal
electrolytic capacitors, and therefore touching these areas may result in an
electrical shock. Always turn all drive input power supplies OFF, and wait at
least 5 minutes after the CHARGE lamp has gone out before connecting
communication cables or motor wiring.
• Proper ground connections are vital for both safety and signal reliability
reasons. For proper grounding procedures, please refer to the section in this
manual pertaining to grounding (section 4).
• Route all communication cables separate from the drive’s input/output power
wiring.
• To avoid the possibility of electric shock due to leakage currents, always
ground the drive’s E/GND terminal and the motor. To avoid misoperation, do
not connect the ETH-100’s GND terminal to either of the above-mentioned
grounds or any other power ground.
• When making connections between the ETH-100 and the drives, do not use
cables that exceed 5 meters in length.
• For further drive-specific precaution, safety and installation information, please
refer to the appropriate Toshiba documentation supplied with your drive.
Installation •••• Wiring
• Internal drive EEPROMs have a limited life span of write cycles. Observe all
precautions contained in this manual and Toshiba manuals regarding which
drive registers safely may and may not be repetitively written to.
• Do not touch or insert a rod or any other item into the ETH-100’s case while
power is applied, as this may lead to electrical shock or device damage.
• Commission the disposal of the ETH-100 to a specialist.
• Because the ETH-100 derives its control power from the connected drives,
removing power to all connected drives will also cause the ETH-100 to lose
power.
Other Precautions