Delta MS300 Series User Manual page 3

READ PRIOR TO INSTALLATION FOR SAFETY.
 Disconnect AC input power before connecting any wiring to the AC motor drive.
 Even if the power has been turned off, a charge may still remain in the DC-link
capacitors with hazardous voltages before the POWER LED is OFF. Do NOT touch
the internal circuits and components.
 There are highly sensitive MOS components on the printed circuit boards. These
components are especially sensitive to static electricity. Take anti-static measure
before touching these components or the circuit boards.
 Never modify the internal components or wiring.
 Ground the AC motor drive by using the ground terminal. The grounding method must
comply with the laws of the country where the AC motor drive is to be installed.
 Do NOT install the AC motor drive in a location with high temperature, direct sunlight
or inflammable materials or gases.
 Never connect the AC motor drive output terminals U/T1, V/T2 and W/T3 directly to
the AC mains circuit power supply.
 After finishing the wiring of the AC motor drive, check if U/T1, V/T2, and W/T3 are
short-circuited to ground with a multimeter. Do NOT power the drive if short circuits
occur. Eliminate the short circuits before the drive is powered.
 The rated voltage of power system to install motor drives is listed below. Ensure that
the installation voltage is in the correct range when installing a motor drive.
1. For 115V models, the range is between 85 –132V.
2. For 230V models, the range is between 170–264V.
3. For 460V models, the range is between 323–528V.
4. For 575V models, the range is between 425–660V.
 Refer to the table below for short circuit rating:
 Only qualified persons are allowed to install, wire and maintain the AC motor drives.
 Even if the three-phase AC motor is stopped, a charge with hazardous voltages may
still remain in the main circuit terminals of the AC motor drive.
 The performance of electrolytic capacitor will degrade if it is not charged for a long
time. It is recommended to charge the drive that is stored in no charge condition every
2 years for 3–4 hours to restore the performance of electrolytic capacitor in the motor
drive. NOTE: When power up the motor drive, use adjustable AC power source (ex.
AC autotransformer) to charge the drive at 70–80% of rated voltage for 30 minutes
(do not run the motor drive). Then charge the drive at 100% of rated voltage for an
hour (do not run the motor drive). By doing these, restore the performance of
electrolytic capacitor before starting to run the motor drive. Do NOT run the motor
drive at 100% rated voltage right away.
 Pay attention to the following precautions when transporting and installing this
package (including wooden crate and wood stave)
1. If you need to deworm the wooden crate, do NOT use fumigation or you will
2. Use other methods, such as heat treatment or any other non-fumigation treatment,
3. If you use heat treatment to deworm, leave the packaging materials in an
 Connect the drive to a three-phase three-wire or three-phase four-wire Wye system to
comply with UL standards.
Model (Power) Short Circuit Rating
115V
230V
460V
575V
damage the drive. Any damage to the drive caused by using fumigation voids the
warranty.
to deworm the wood packaging material.
environment of over 56°C for a minimum of thirty minutes.
5 kA
5 kA
5 kA
5 kA
II