ATEX-certified motor thermal protection function with Pt100 relays (+L514+Q971) 39
Start-up and acceptance test
You need the Drive composer PC tool or a control panel to perform the start-up and
acceptance test.
If you have to set FSO module parameters, you need the Drive composer pro PC tool.
Initial status: Make sure that the drive is ready for use, that is, you have done the tasks of
the drive start-up procedure. See the hardware manual.
Action
WARNING! Obey the Safety instructions, page 9. If you ignore them, injury or death, or
damage to the equipment can occur.
Checks and settings with no voltage connected
Check that the classification of the motor thermal protection function corresponds to the Ex
classification of the environment and the Ex motor.
The motor manufacturer selects the Pt100 sensors for the motor temperature measurement.
Check that the temperature trip levels match those of the protective relay and set the Pt100 relay
respectively.
Check that the installation of Pt100 sensors complies with the requirements for the applicable type
of protection (see page 37).
Check that the wires are connected to the appropriate terminals and the terminals are tightened.
(Pull on the wires to check.)
Set the trip level of the Pt100 relay of the relay. For example, for temperature class T3 the values
are:
• 120…140 °C when only tripping is used
• alarm 120…140 °C and trip 130…150 °C when both alarm and trip are used.
Note: Set the temperatures according to the temperature class of the motor.
To modify the settings of the relay, you need a programming tool. See pages 60 and 62 for ordering
information.
Check that the other settings of the relay are adequate.
Settings with voltage connected
If necessary, set the appropriate parameters. See section Parameter settings on page 43.
If necessary, configure the motor overtemperature indication message. See section Motor
overtemperature indication on page 44.
Acceptance test procedure
To test wire break monitoring, disconnect the sensor circuit.
Expected outcome: Fault trip (the appropriate LED lights). Drive STO is activated.
Make sure the correct indications are activated.
With the relay(s) both in tripped and in reset state, try to start the drive.
The drive must not start before the drive (and FSO) faults are reset.
Fill in and sign the acceptance test report which verifies that the safety function is safe and
accepted to operation.
00 ACS880 ATEX cabinet.book Page 39 Tuesday, May 28, 2019 10:25 AM
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