150 Start-up
Switching the unit off
1. Stop the motors connected to inverter units.
2. Deactivate the Run enable signal to open the main contactor [Q1.2]. This can be done,
for example, with an operating switch [S21].
Powering up the main circuit of the drive
Switch the grounding switch [Q9] off.
Drives with a main switch-disconnector [Q1.1]:
Close the main switch-disconnector.
Drives with a main circuit breaker ([Q1]:
Crank in the main circuit breaker.
WARNING! Never use the Start button of the main circuit breaker [Q1] for closing. The
Start button of the main circuit breaker bypasses the charging circuit and may damage the
converter module.
Note: Do not use excessive force. The main switch-disconnector (or main circuit breaker) can only
be closed when
• the main input terminals [L1, L2, L3] are powered, and
• auxiliary voltage is switched on [Q21], and
• grounding switch is off [Q9].
Turn the operating switch [S21] to the ON (1) position to activate the run enable signal. Depending
on control source settings, this may also close the main contactor (if present). If a main contactor is
present and does not close, refer to the circuit diagrams delivered by the drive as well as the
appropriate firmware manuals.
On-load checks
Start the motor to perform the ID run.
Check that the module cooling fans rotate freely in the right direction. The fans run noiselessly.
Check that the motor starts, stops and follows the speed reference in right direction when controlled
with the control panel.
Check that the motor starts, stops and follows the speed reference in right direction when controlled
through the customer-specific I/O or fieldbus.
Drives in which the Safe torque off control circuit is connected in use:
Test and validate the operation
of the Safe torque off function. See Start-up including acceptance test (page 358).
Drives with other safety functions:
Test and validate the operation of other safety functions (for
example, emergency stop).
WARNING! The safety functions are not safe before they are validated according to the
instructions. Safety functions are optional. See the function-specific manual for the
validation tasks.
Tasks
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