MM30-W
Doc. N° MO-0117-ING
Rev.
1
Pag.
7
of
29
Copyright - 2010 - Microener
4. SIGNALIZATIONS
Eight signal leds (normally off) are provided:
a)
Red
LED
T>
Flashing when motor heating exceeds the set alarm level [Ta].
Illuminated on overheating trip and/or activation of RTD input.
b)
Red
LED
St.N°
Flashing after tripping of the consecutive starts number limitation
element [St.N°] during the restart inhibition time [tBSt]
Illuminated after tBSt expiry.
c)
Red
LED
I>,O>
Flashing when the minimum pick-up level of the overcurrent element [I>]
and/or the Earth Fault element [O>] is exceeded.
Illuminated on tripping of the I> or O> element at the end of the relevant
time delay [tI>] or [tO>].
d)
Red
LED
I
2
>,1
Flashing when negative sequence current exceeds the set minimum
pick-up level [I
2
>].
Illuminated on tripping of the unbalance inverse time element [tI
2
>] or of
the single phasing element [1
].
e)
Yellow
LED
PROG/
I.R.F.
Flashing during the programming of the parameters.
Illuminated on Internal Relay Fault detection.
f)
Red
LED
U,f,
Flashing when any of the voltage and/or frequency and/or Power Factor
control elements starts operating.
Illuminated on tripping of any of the U,f, Power Factor element at the
end of the relevant time delay.
g)
Red
LED
I<
Flashing when motor current drops below the no-load running level [I<].
Illuminated on tripping at the end of the 3 sec time delay
h)
Yellow
LED
ROTOR
STALL
Illuminated on tripping of the Locked Rotor element [ILR] or of the Rotor
Stall element [tTr].
The leds reset takes place as follows:
From flashing to off, automatically when the flashing cause disappears.
From Steady light to off by Enter/Reset push button (if the lit-on cause is cleared)
T>
St.N°
I>,O>
I2>,1
ROTOR
STALL
PROG/
I.R.F.
U,f,
I<
a
b
c
d
e
f
g
h
