Connection Of The Front Panel; Pre-Use Checks - Danfoss OPTYMA Control User Manual

User Guide | Optyma™ control AK-RC 113 three phase
4.4 Connection of the front
panel

4.5 Pre-use checks

© Danfoss | DCS (vt) | 2020.03
• For connections to the electrical panel, cables with a section suitable for the current passing
through them must be used. The degree of insulation must also be compatible with the applied
voltages. Prefer cables with flame retardant insulator and with a low emission of toxic fumes if
affected by fire.
It's mandatory to connect the clamp marked with the initials PE to the ground system of the
power supply network. If necessary, check the efficiency of the ground system.
Other conductors with the exception of the external protection conductor must not be
connected to the PE terminal.
Re-hook the front panel and reconnect the connector of the electronic board as indicated below.
Fig 12. Re-hook the front panel at the back of the box by
reinserting the two black hinges in the appropriate seats.
Fig 14. In case panel is connected with Modbus network
and/or Alarm/Aux relays are used, wirings must be
done directly on the electronic card clamps. It's suggested
to put that wirings beside the connection cables from
electronic card and bottom of the box. For further
clarification on the clamps please refer to the chapter 6.
• After having carried out the wiring, check the correct execution of the same by means of the wiring
diagram.
• Make sure that the screws on the clamps are properly tightened. Check, when possible, the correct
functioning of external protection devices.
• Make a correct calibration of the motor protection switch (if present) dedicated to the compressor
motor, as indicated in the following chapter.
• After turning on the electrical panel, check the correct current absorption of the various loads. After
operating the system for a few hours, it is advised to check the correct tightening of the terminal
board screws (including the connection of the power supply line).
Caution: before carrying out this operation, the panel must be switched off by cutting off the
supply line upstream and blocking the sectioning with a padlock to ensure maximum safety.
Check the absence of voltage with a Tester before any operation.
Fig 13. Flex the hinges and rotate the front
panel 180° downwards to access the inside of the panel
and reconnect the connector of the electronic board.
BC317523579312en-000101 | 7