Display Of Measurements And Required Cos Setting; Maximum Value Clearing; Operating Mode - ITALFARAD PFC5 Bedienungsanleitung

ITALFARAD S.p .A. via IV novembre n.1 Minerbio (BO) It aly

1.12 DISPLAY OF MEASUREMENTS AND REQUIRED COS SETTING

Normally, the display shows the cos
LED's. The flashing decimal point indicates the negative sign (inverse energy flow).
By pressing the MODE key, the V, A, kvar, etc. LEDs are switched on one after another
and the relative measurement of each is shown.
An optional function is available for each LED and indicated on the front panel, which can
be displayed by pressing the + and - keys (the LED flashes quickly thereafter).
When the SET COS
grammed; the + and - keys increase or decrease the value respectively. The set cos can
be adjusted between 0.80 IND and 0.80 CAP.
The following table summarises all the available measurements.
LED
VOLTAGE
CURRENT
kvar required to
kvar
Average weekly
WEEKLY P.F.
power factor (a)
OVERLOAD %
TEMP.
Temperature (c)
SET COS Required COS
This PF (Power Factor) value is determined by active and reactive energy meters of
a
the last 7 days. It is referred to positive energy quadrants only.
b
Overload current (Thd I %) caused by harmonic voltage at the capacitor terminals.
Caution! The temperature measurement is considered valid after a period of 20-30
c
minutes after power up.

1.13 MAXIMUM VALUE CLEARING

The maximum values of Voltage, Current, Overload and Temperature along with average
weekly power factor can be cleared by simultaneously pressing the + and - keys for 3
seconds. Once clearing is complete, the display views CLr.

1.14 OPERATING MODE

The AUT and MAN LED's indicate the automatic or manual operating mode.
To change mode, press the MAN/AUT key for at least 1 second.
When the SET COS
The operating mode remains stored even if power is removed.
LED lights up, the set-point of the required cos
FUNCTION
RMS voltage
RMS current
reach set-point
Thd I %
capacitors (b)
Electric panel
MAX temperature value
LED is lit up, no mode change is possible.
of the system together with the IND and CAP
BY PRESSING -
MAX voltage value
MAX current value
kvar
(system kvar)
Real power factor
MAX overload value
Decrease SET COS
value
36
can be pro-
BY PRESSING +
Steps (kvar) required to
reach set-point
Overload event counter
Unit of meaure °C or °F
Increase SET COS value
GB