18 /4 8
From the electrical and electronic standpoint MC BOX .ETL offers standard operating
conditions and preset operating limits.
Motor driving
output MVmot= Vin_power Imax = A
Electronic
key input
Yellow key (user key):
PIUSI electronic key
enabling input
A soware procedure is
used to record the yellow
user keys on the PC and
they are then enabled
for use at one or more
dispensing stations
The presence of the keys can be
either configured or disregarded
Gray key (manager key):
PIUSI electronic key
enabling input
Used to configure the panel
and download dispensing
data in relation to SSM
The presence of the keys can be
either configured or disregarded
Nozzle
contact input
(optically
coupled)
(only certain
versions)
Voltage-free contact
or open collector
electronic signal (NPN)
The voltage-free contact (or
the open collector) will be
supplied with around mA
at Vdc
The presence of this enabling signal
can be configured or disregarded
The signal type can be configured
(stable level / pulse or normally
open / normally closed)
Pulser
IN input
(optically
coupled)
Voltage-free contact
or open collector
electronic signal
The voltage-free contact (or
the open collector) will be
supplied with around mA
at Vdc
The maximum input signal
frequency is Hz with minimum
half-period (Hi or LOW) of .ms
Level
contact input
(optically
coupled)
(only certain
versions)
Voltage-free contact or
open collector (NPN)
electronic signal; the
terminal also carries
+Vdc to power a level
sensor, if necessary; the
max current available
to power the sensor is
mA
The voltage-free contact (or
open collector) will carry
around mA at Vdc Imax
for sensor power= mA
(at Vdc)
The presence of this signal can be
either configured or disregarded
The signal type can be configured
(stable level / pulse or normally
open / normally closed)
You can choose the action to be
performed by the controller when
it receives this signal: it can simply
show an alarm on the display and
activate the OUT alarm output or
it can inhibit fluid dispensing if the
"pump cut-out" option is selected
Signal Standard conditions Limits Notes