BERTA Alert has two acquisition groups. To learn how to view, use and change acquisition group parameters, refer to Signal acquisition section in the BERTA On-Site Tests chapter.

Acquisition Group 1

Acquisition group 1 is the same for all models. The signals from this group are not recorded.

Acquisition Group 2

The signals in Acquisition group 2 differ slightly for the BERTA Alert application are listed below:

Rotor speed	Unit speed.
Mean speed	Mean speed value.
Mean power	Mean power value.
Mean servos	Mean position of servomotors.
Servo filt	Position of servomotors (filtered signal).
AD12 filt	Filtered signals from AD12.
AD13 filt	Filtered signals from AD13 V pu: Voltage in p.u.
Pmec filt	Mechanical power estimated by BERTA (filtered).
Pelec filt	Electrical power estimated by BERTA (filtered) Pacc filt: Acceleration power estimated by BERTA (filtered) dw filt: Turbine non-linear model output (filtered) Freq pu: Frequency in p.u.
dFreq pu	Frequency delta in p.u.
AD1	Main servo.
AD2	Free (not assigned to any signal).
AD3	Vab.
AD4	Vbc.
AD5	High voltage - Free (not assigned to any signal)
AD6	High voltage - Free (not assigned to any signal)
AD7	High voltage - Free (not assigned to any signal)
AD8	High voltage - Free (not assigned to any signal)
AD9	Ia
AD10	Ib
AD11	Ic
AD12	Low voltage -Free (not assigned to any signal)
AD13	Low voltage -Free (not assigned to any signal)
AD14	Low voltage -Free (not assigned to any signal)
AD15	Low voltage -Free (not assigned to any signal)
AD16	Low voltage -Free (not assigned to any signal)

Specialized Solutions Documentation

BERTA Alert Acquisition

Acquisition Group 1

Acquisition Group 2