3
Usage Precautions
•
Please use the option board only when the ambient temperature of the inverter unit into which
the option board is installed is within the following specified temperature limits:
Operation: -10
∼
+40
°
C (+14
∼
+104
°
F)
Storage: -25
∼
+65
°
C (-13
∼
+149
°
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 such as the terminal block while the inverter’s CHARGE lamp is lit. A
charge will still be present in the inverter unit’s internal electrolytic capacitors, and therefore
touching these areas may result in an electrical shock. Always turn all inverter input power
supplies OFF, and wait at least 5 minutes after the CHARGE lamp has gone out before wiring the
communication cables or motor wiring.
•
When installing the option board into the inverter and making wiring connections, make certain that
no clippings or wiring leads that could cause device failure fall into the inverter or onto electronic
components.
•
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
2.1).
•
Route the communication cables separate from the inverter input/output power wiring.
•
To avoid the possibility of electric shock due to leakage currents, always ground the inverter unit’s
E/GND terminal and the motor. The option board’s SHLD is connected to earth ground
through the metal circuit board standoff.
Installation
••••
Wiring
•
The inverter’s EEPROM has a life span of 10,000 write cycles. Do not write to the same
parameter (other than frequency or input command) more than 10,000 times.
•
Do not touch or insert a rod or any other item into the inverter while power is applied, as this
may lead to electrical shock or inverter damage.
•
Commission the disposal of the option board to a specialist.
•
Do not assign the same node ID to more than one inverter in the same network.
•
Assign the PLC address to 1 and all inverters should be assigned node addresses from 2
through 64.
•
When the inverter’s control power supply is turned on, the inverter performs initialization
functions for approximately 1 second, during which communications capabilities are disabled.
Communications capabilities will also be disabled for approximately 1 second after momentary
control power supply outages or inverter resets.
Other Precautions
