Frequency Drive; Regulation - SystemAir SYSAQUAC 25 Manuel D'installation

12.3. FREQUENCY DRIVE

EMC
Caution
When the building power supply is of an IT (ungrounded) type or corner grounded TN type, disconnect
the internal EMC filter by removing the screw at EMC.
WARNING! If a drive whose EMC filter is not disconnected is installed on an IT system [an ungrounded power
system or a high resistance-grounded (over 30 ohms) power system], the system will be connected to earth potential
through the EMC filter capacitors of the drive. This may cause danger or damage the drive.
If a drive whose EMC filter is not disconnected is installed on a corner grounded TN system, the drive will be damaged.
² Press the release lever on top of the drive.

13. REGULATION

SYSAQUAC are provided without electronic control board. Terminal blocks are installed in the electrical
compartment to command the compressors starts and stops with an external control board installed by the customer
(230V contact). Some terminal blocks are also available (dry contact NC or NO) to send the SYSAQUAC status
(default) to the external control board of the customer
WARNING
FREQUENCY DRIVE
23
EMC
VAR