YASKAWA ELECTRIC TOBP C730600 50C YASKAWA 1000-Series Option SI-T3 Installation Manual 135 Installation Procedure5 Installation Procedure◆ Section SafetyDANGERElectric Shock HazardDo not connect or disconnect wiring while the power is on.Failure to comply will result in death or serious injury.Disconnect all power to the unit and wait at least the amount of time specified on the unitfront cover safety label.After all indicators are off, measure the DC bus voltage to confirm safe level, and checkfor unsafe voltages before servicing. The internal capacitor of the units or correspondingparts remain charged after the power supply is turned off.WARNINGElectrical Shock HazardDo not remove the front cover of the unit while the power is on.Failure to comply could result in death or serious injury.The diagrams in this section may include units without covers or safety shields to showdetails. Be sure to reinstall covers or shields before operating any devices. The optionboard should be used according to the instructions described in this manual.Do not allow unqualified personnel to use equipment.Failure to comply could result in death or serious injury.Maintenance, inspection, and replacement of parts must be performed only by authorizedpersonnel familiar with installation, adjustment, and maintenance of this product.Do not touch the option while operating the unit.Failure to comply could result in death or serious injury.