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2. Before you begin
Read and understand these instructions before performing any procedure with this drive.
* For additional information, refer to NEMA ICS 1.1 (latest edition), “Safety Guidelines for the Application, Installation, and
Maintenance of Solid State Control” and to NEMA ICS 7.1 (latest edition), “Safety Standards for Construction and Guide for
Selection, Installation and Operation of Adjustable-Speed Drive Systems.”
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Read and understand this manual before installing or operating the Altivar 61 (ATV61) or Altivar 71 (ATV71) drive
controller. Installation, adjustment, repair, and maintenance must be performed by qualified personnel.
• The user is responsible for compliance with all international and national electrical code requirements with respect to
grounding of all equipment.
• Many parts of this drive controller, including the printed circuit boards, operate at the line voltage. DO NOT TOUCH. Use
only electrically insulated tools.
• DO NOT touch unshielded components or terminal strip screw connections with voltage present.
• DO NOT short across terminals PA/+ and PC/- or across the DC bus capacitors.
• Before servicing the drive controller
- Disconnect all power, including external control power that may be present.
- Place a “DO NOT TURN ON” label on all power disconnects.
- Lock all power disconnects in the open position.
- WAIT 15 MINUTES to allow the DC bus capacitors to discharge. Then follow the DC bus voltage measurement
procedure given in the Installation Manual to verify that the DC voltage is less than 42 V. The drive LED is not an
indicator of the absence of DC bus voltage.
• Install and close all covers before applying power or starting and stopping the drive controller.
Failure to follow these instructions will result in death or serious injury.
WARNING
DAMAGED EQUIPMENT
Do not install or operate any drive or drive accessory that appears damaged.The relays, inputs, or outputs of a damaged
drive may not operate in a normal manner, leading to unintended equipment operation.
Failure to follow this instruction can result in death, serious injury, or equipment damage.
WARNING
LOSS OF CONTROL
• The designer of any control scheme must consider the potential failure modes of control paths and, for certain critical
control functions, provide a means to achieve a safe state during and after a path failure. Examples of critical control
functions are emergency stop and overtravel stop.
• Separate or redundant control paths must be provided for critical control functions.
• System control paths may include communication links. Consideration must be given to the implications of unanticipated
transmission delays or failures of the link.*
• Each implementation of an Altivar 71 Modbus TCP/IP Ethernet card must be individually and thoroughly tested for proper
operation before being placed into service.
Failure to follow these instructions can result in death, serious injury, or equipment damage.