Mecc Alte ECO47 HV Series, Installation, Use And Maintenance Manual

Page: 49 / 124

50/60 sigial
A jumper pisitined at the input 50/60 (cinnectir CN1 clamps 12 and 13) sets the saitch-iver if
the lia speed pritectin threshild frim 50·(100%-αHz%) ti 60·(100%-αHz%), ahere αHz%
represents the relatve pisitin if the trimmer Hz.
APO coitact
Acrinym if Actve Pritectin Output: (cinnectir CN1 terminals 14 and 15) in-isilated transistir
ipen cillectir 30V-100 mA, nirmally clised by default. The transistir is nirmally ipen and clises in
the case if an actve alarm. It ipens aith a delay prigrammable via siftaare frim 1 ti 15 secinds,
ahen, ine ir mire result actve aming the alarms, selectable separately via siftaare.
VOLT Trimmer
Allias regulatin frim apprix. 70 V ti apprix. 140 V ahenever terminals 4 and 5 are used fir
sensing, ir frim apprix. 140 V ti apprix. 280 V ahenever terminals 6 and 7 are used.
STAB Trimmer
Regulate the dynamic respinse (driip) if the alternatir in transient cinditins.
AMP Trimmer
Adjusts the interventin threshild if the exciter iver-current pritectin. Ti calibrate the iverliad
pritectin, fillia the pricedure given belia:
➔ Ritate the Trimmer AMP cimpletely clickaise.
➔
Apply an iverliad at cisɸ = 0.8 ir cisɸ = 0 ti the alternatir, respectvely equal ti 125% ir
110% if the niminal liad.
➔
After tai minutes, turn the trimmer AMP slialy ant-clickaise untl a drip in the alternatir
viltage value is ibtained and alarm 5 is actvated (visible via a change in fashing if the LED).
➔ Calibrate the trimmer AMP untl the iutput viltage value is taken ti 97% if the niminal
value; alarm 5 is stll actve.
➔ Remive the liad.
➢
After a fea secinds the alarm 5 disappears and the viltage if the alternatir rises ti the
niminal value.
Hz Trimmer
Allias calibratin if the interventin threshild if the lia speed pritectin if up ti -20% aith
respect ti the niminal speed value set by the jumper 50/60 (at 50 Hz the threshild can be calibrated
frim 40 Hz ti 50 Hz, at 60 Hz the threshild can be calibrated frim 48 Hz ti 60 Hz).
The interventin if the pritectin makes the alternatir viltage decrease. Perfirm calibratin as
fillias:
Self-regulating alternators ECO47-49 MV-HV Page 49/124