Start-Up Procedure; Safety; Checks/Settings With No Voltage Connected; Powering Up The Auxiliary Circuit Of The Supply Unit - ABB ACS880-207 Hardware Manual

64 Start-up

Start-up procedure

Tasks

Safety

WARNING! Follow the safety instructions during the start-up procedure. See Safety
instructions for ACS880 multidrive cabinets and modules (3AUA0000102301
Only qualified electricians are allowed to start-up the drive.

Checks/Settings with no voltage connected

Ensure that the disconnector of the supply transformer is locked to the off (0) position, that means no
voltage is, or cannot be connected to drive inadvertently.
Check that the main switch-disconnector/air circuit breaker [Q1] is switched off.
Supply unit with the grounding switch [Q9] (option +F259): Close the grounding switch [Q9].
WARNING! Do not use excessive force. See subsection
grounding the drive (excluding the input power
Open the charging circuit switch fuse [Q3].
Check the mechanical and electrical installation. See
Check the settings of breakers/switches in the auxiliary circuits. See delivery-specific circuit
diagrams.
Disconnect the unfinished or unchecked 230 V AC cables that lead from the terminal blocks to the
outside of the equipment.
Check that both circuits of Safe torque off on the BCU control unit are closed for the supply unit to
start. (IN1 and IN2 must be connected to OUT.) See chapter
Check that both channels of STO IN (X52) connector on IGBT supply module are connected to
24 V DC for the supply unit to start.

Powering up the auxiliary circuit of the supply unit

Make sure that it is safe to connect voltage. Ensure that:
• nobody is working on the unit or circuits that are wired from outside into the cabinets.
• covers of the motor terminal boxes are on.
Supply unit with the voltage meters [F5] on door (option +G334): Close the circuit breaker for the
meters.
Close the circuit breakers supplying the auxiliary circuits [F22,..., F26].
Close the cabinet doors.
Close the main breaker of the supply transformer.
Switch the auxiliary voltage switch [Q21] on.
Supply unit with the grounding switch [Q9] (option +F259): Open the grounding switch.
WARNING! Do not use excessive force. If the unit is equipped with a grounding switch
[Q9], electromagnetic interlocking is also used. You cannot switch the main switch-
disconnector [Q1] on before its lock release relay [K1] is energized, that is:
• the main input terminals [L1, L2 and L3] are powered, and
• auxiliary voltage switch [Q21] is switched on, and
• circuit breakers [F22 and F23] in between the relay [K1] and auxiliary voltage switch [Q21] are
switched on, and
• grounding switch [Q9] is switched off.
Disconnecting and temporary
terminals), page 66.
Installation checklist on page
The control unit on page 131.
[English]).
61.