14 YASKAWA ELECTRIC TOBP C730600 45A YASKAWA AC Drive-Option Card CANopen Installation Manual5 Installation Procedure5 Installation Procedure◆ Section SafetyDANGERElectric Shock HazardPower to the drive must be shut off when installing this option card.Even though the power has been shut off, voltage still remains in the drive’s DC bus. Waitbefore removing the front cover once the drive has been turned off.The CHARGE light on the drive will go out after voltage in the DC bus drops below 50 V,at which point it is safe to remove the front cover.Due to the risk of electric shock, be sure that all LEDs have gone out and that the DC busvoltage has reached a safe level prior to performing any work on the drive.WARNINGElectrical Shock HazardDo not remove the front cover of the drive while the power is on.Failure to comply could result in death or serious injury.The diagrams in this section may include drives 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.