2.1 Section SafetyWARNINGElectrical Shock HazardDo not connect or disconnect wiring while the power is on.Failure to comply could result in death or serious injury.Before servicing, disconnect all power to the equipment. The internal capacitor remains charged even after the power supplyis turned off. The charge indicator LED will extinguish when the DC bus voltage is below 50 Vdc. To prevent electric shock,wait for at least the time specified on the warning label; after all indicators are OFF, measure for unsafe voltages to confirmthe drive is safe prior to servicing.Do not operate equipment with covers removed.Failure to comply could result in death or serious injury.The diagrams in this section may show drives without covers or safety shields to show details. Be sure to reinstall covers orshields before operating the drives and run the drives according to the instructions described in this manual.Always ground the motor-side grounding terminal.Improper equipment grounding could result in death or serious injury by contacting the motor case.Do not remove covers or touch circuit boards while the power is on.Failure to comply could result in death or serious injury.Do not allow unqualified personnel to perform work on the drive.Failure to comply could result in death or serious injury.Installation, maintenance, inspection, and service must be performed only by authorized personnel familiar installation,adjustment, and maintenance of drives.Do not perform work on the drive while wearing loose clothing, jewelry or without eye protection.Failure to comply could result in death or serious injury.Remove all metal objects such as watches and rings, secure loose clothing, and wear eye protection before beginning workon the drive.Do not touch any terminals before the capacitors have fully discharged.Failure to comply could result in death or serious injury.Before servicing, disconnect all power to the equipment. The internal capacitor remains charged even after the power supplyis turned off. The charge indicator LED will extinguish when the DC bus voltage is below 50 Vdc. To prevent electric shock,wait for at least the time specified on the warning label; after all indicators are OFF, measure the DC bus voltage level toconfirm it has reached a safe level.Fire HazardTighten all terminal screws to the specified tightening torque.Loose electrical connections could result in death or serious injury by fire due to overheating of electrical connections.Do not use an improper voltage source.Failure to comply could result in death or serious injury by fire.Verify that the rated voltage of the drive matches the voltage of the incoming power supply before applying power.Do not use improper combustible materials in drive installation.Failure to comply could result in death or serious injury by fire.Attach the drive to metal or other noncombustible material.2.1 Section Safety166 YASKAWA ELECTRIC SIEP C710636 10C Z1000U HVAC MATRIX Drive Programming Manual
