Section Safety - YASKAWA L1000A Technical Manual

7.1 Section Safety

7.1 Section Safety
Do not connect or disconnect wiring while the power is on.
Failure to comply will result in death or serious injury. Before servicing, disconnect all power to the equipment. The
internal capacitor remains charged even after the power supply is 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 once all indicators are OFF, and then measure the DC bus voltage level to confirm it has reached a safe level.
When using a PM motor for the first time, or when replacing the drive or PM motor, always make sure that
motor parameter have been set properly and the speed detection function accurately prior to operation. Using a
PM motor requires that the encoder offset be set correctly in addition to entering motor data to corresponding
parameters. If the motor, encoder, or drive is ever replaced, be sure to perform Encoder Offset Auto-Tuning.
Insufficient torque can cause the elevator car to move in the direction of the load, or cause the motor to behave
erratically (reverse operation, stand still, sudden accelerations, etc.).
For more information, refer to the instruction manual included with the motor.
Do not connect or disconnect wiring to the drive or motor while the power is on. Failure to comply will result in
death or serious injury.
Before servicing, disconnect all power to the equipment. The internal capacitor remains charged even after the power
supply is turned off. The charge indicator LED will extinguish when the DC bus voltage is below 50 Vdc. To prevent
electric shock, wait at least five minutes after all indicators are OFF and measure the DC bus voltage level to confirm
safe level.
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 or shields before operating the drives and run the drives according to the instructions described in this manual.
Do not attempt to modify or alter the drive in any way not explained in this manual. Yaskawa is not responsible
damage caused by modification of the product made by the user. Failure to comply could result in death or serious
injury from operation of damaged equipment.
The diagrams in this section may show drives without covers or safety shields to show details. Be sure to reinstall
covers or shields before operating the drives and run the drives according to the instructions described in this manual.
Improper equipment grounding could result in death or serious injury by contacting ungrounded electrical
equipment.
Always ground the ground terminal. (200 V Class: Ground to 100 Ω or less, 400 V Class: Ground to 10 Ω or less, and
600 V class: 10 Ω or less)
Verify motor wiring bare wire ends do not contact the drive chassis or enclosure when wiring drive terminals U/
T1, V/T2, W/T3.
Failure to comply may result in serious injury or death due to electrical shock.
318
DANGER
Electrical Shock Hazard
W ARNING
Ensuring Safety during Auto-Tuning
Electrical Shock Hazard
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual