ATEX-certified motor thermal protection function with PTC thermistor relays (+L513+Q971) 25
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 PTC sensors for the motor temperature measurement.
Check that the temperature on-off resistances match those of the protective relay.
Check that the installation of PTC sensors complies with the requirements for the applicable type of
protection (see page 23).
Check that the wires are connected to the appropriate terminals and the terminals are tightened.
(Pull on the wires to check.)
Settings with voltage connected
If necessary, set the appropriate parameters. See section Parameter settings on page 43.
If necessary, configure the motor overtemperature and STO indication. See section Reset method
and status indications on page 44.
Acceptance test procedure
To test short-circuit detection, short-circuit the sensor input with a 20 ohm resistance (you do not
have to disconnect the sensor circuit).
Expected outcome: Fault trip (the appropriate LED lights). Drive STO is activated.
Make sure the correct indications are activated.
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.
To test excess temperature detection, increase the resistance of the sensor circuit from
50…1500 ohm to 4 kohm.
Expected outcome: Fault trip (the appropriate LED lights). Drive STO is activated.
Make sure the correct indications are activated.
With the relay(s) in tripped state, try to start the drive.
The drive must not start before the PTC relay(s) and/or any 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 25 Tuesday, May 28, 2019 10:25 AM
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