Checks/Settings With No Voltage Connected; Connecting Voltage To The Auxiliary Circuits; Checks With Auxiliary Voltage Connected - ABB ACS880-104 Hardware Manual

172 Start-up
Tasks

Checks/Settings with no voltage connected

Check the mechanical and electrical installation. See
Make sure that the insulation resistance of the assembly has been checked. See
insulation of the assembly (page 147).
The supply unit of the drive system has been set up according to the instructions in its manuals.
The supply unit is off, and the drive system has been isolated from the supply network.
Check that any circuit breakers and protection switches in the cooling fan supply circuit are closed.
Refer to the circuit diagrams.
Check the following data for each inverter unit and note down any deviations from delivery
documents.
• Motor, pulse encoder and cooling fan rating plate data correspond to the values in the motor list.
• Motor temperature method: Pt100, PTC, KTY84, other?
• Motor fan of separately ventilated motors. Check the current, the overcurrent protection setting
and the functioning of the fan output control circuit.
• Direction of motor rotation.
• Maximum and minimum speeds, fixed speeds.
• Speed scaling factor, gear ratio, roll diameter, etc.
• Acceleration and deceleration times.
• Inertia compensation.
• Operating modes, stop mode, emergency stop mode, etc.

Connecting voltage to the auxiliary circuits

Disconnect any auxiliary voltage (230 or 115 V AC) cables that lead from the terminal blocks to the
outside of the equipment and have not yet been checked. Also disconnect any uncompleted wiring.
Disconnect the communication link between the drive system and any overriding system.
Make sure the main contactor/breaker cannot be switched on inadvertently by remote control.
Be ready to trip the main breaker of the supply transformer in case something abnormal occurs.
Ensure all cabinet doors are closed.
Close the main breaker of the supply transformer. This will energize the input terminals of the drive
system.
Close the auxiliary voltage switch (if present).

Checks with auxiliary voltage connected

Check that the cooling fans rotate freely in the right direction, and the air flows upwards.
Notes:
• Speed-controlled cooling fans of frame R8i modules (ie. without option +C188) will not rotate until
the DC voltage to the module is connected.
• Depending on the wiring of the drive system and the type of inverter modules, it may be
necessary to have the supply unit powered before the fans are started. If so, check the cooling
fans after powering the supply unit.
Installation checklist (page 169).
Checking the