Commissioning; Before Initial Switch-On; Functional Test - Lenze G7 Series Mounting And Switch-On Instructions

Commissioning

Functional test

Commissioning

Before initial switch-on

• That the drive does not show any visible signs of damage.
• Is the mechanical fixing o.k.?
• Is the electrical connection ok?
• Are all rotating parts and surfaces that may become hot protected against contact?
• Is the featherkey radially secured during the test run without output elements?
• Have all screwed connections of the mechanical and electrical parts been tightened?
• Is it ensured that the cooling air can be freely supplied and discharged?
• Has the PE conductor been connected correctly?
• Are the protective devices against overheating (e.g. thermal sensor evaluation) working?
• Has the inverter been parameterized suitably for the motor?
• Is the phase sequence of the motor connection correct?
• Is a protection against contact provided in front of rotating parts and in front of surfaces that can get hot?
• Is the contact of good electrical conductivity if a PE connection on the motor housing is used?
After a long period of downtime or after overhauling the motor, check the insulation resistance prior to
initial switch-on, as condensation may have formed.
• If the values measured are ≤1 kΩ per volt of the rated voltage, the insulation resistance is inadequate and
no voltage is to be applied.
• Dry the winding until the insulation resistance is >1 kΩ per volt of the rated voltage.
Functional test
After commissioning, check all individual functions of the drive:
• Rotating direction in decoupled state
• Torque behavior and current consumption
• Function of the feedback system
• Brake function
During operation, carry out inspections on a regular basis. Pay special attention to:
• Unusual noises
• Irregular running
• Increased vibration
• Loose fixing elements
• Condition of electrical cables
• Speed variations
• Deposits on the drive and in the cooling channels
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