Usage Precautions

Operating Environment

•Please use the MDB-100 only when the ambient temperature of the environment into which the MDB-100 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.

Installation • Wiring

•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.

•Route all 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. To avoid misoperation, do not connect the MDB-100’s SHIELD terminal to either of the above-mentioned grounds or any other power ground.

•When making connections between the MDB-100 and S7 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 S7 drive.

Other Precautions

•The drive’s EEPROM has a life span of 10,000 write cycles. Do not write to the same holding register (other than registers 7A00 ∼ 7A02 and FA00 ∼ FA02 or write-only coils) more than 10,000 times.

•The MDB-100’s EEPROM has a life span of 100,000 write cycles. Do not write to the same MDB-100 configuration register more than 100,000 times.

•Do not touch or insert a rod or any other item into the MDB-100’s case while power is applied, as this may lead to electrical shock or device damage.

•Commission the disposal of the MDB-100 to a specialist.

•Do not assign the same network address to more than one MDB-100 station in the same network. For a detailed explanation of station addressing, refer to section 8.

•When the MDB-100 is configured to receive its Modbus RTU / ASCII station address from the drive on Channel A, be sure to reset the MDB-100 if the inverter number parameter on the drive on Channel A is changed. Refer to section 8 for more information.

•Because the MDB-100 derives its control power from the drive connected to Channel A, removing power from that drive will also cause the MDB-100 to lose power, even if power is still applied to the drive connected to channel B.

•When only 1 drive is connected to the MDB-100, it must be connected to Channel A.

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