Vfd Protections - Vfdnav Service Software Required; Vfd Overload/Over Current - Vfdnav Service Software Required - Daikin PE-ADDA200 Service And Installation Manual

9.2 VFD Protections – VFDNav service software required
The VFD includes the following protections:

VFD Current Overload

VFD Over Current with solid state short circuit protection

VFD Heatsink High Temperature

Under Voltage

Over Voltage

Motor High Temperature: VFD measure PTC on motor and pass value to control system and this define
the limit

Safe Torque Off

9.3 VFD Overload/Over Current - VFDNav service software required

VFD output current is constantly measured in all three phases. Different thresholds are integrated into the
inverter, that lead to different alarm conditions.
Extremely high currents may cause a hardware fault to the power board. In this case an A3 alarm will be
generated.
Level Description
Hardware overcurrent
Phase-U IGBT desaturation
Phase-V IGBT desaturation
1
Phase-W IGBT desaturation
Software overcurrent
Electronic differential
2 Motor Thermal Current (I2t)
Motor Thermal Time Constant
3 VFD min current
Min current waiting time
Daikin Applied Europe S.p.A
SERVICE and INSTALLATION MANUAL
Compressor Inverter PE-ADDA200
Tab. 9
Parameter Value
120%Imax
P37 110% Imax
P127 10% Imax
P70 110% In
P71 180 s
P244 5% In
P243 2 s
Page 40 of 51
Action
A3.0 Alarm. VFD Stops
A3.1 Alarm. VFD Stops
A3.2 Alarm. VFD Stops
A3.3 Alarm. VFD Stops
A3.4 Alarm. VFD Stops
A3.5 Alarm. VFD Stops
A6.0 Alarm. VFD Stops.
A4.4 Alarm VFD Stops.
Rev. 0.3