ENGLISH
7
5.1 ELECTRICAL
CONNECTIONS:
ATTENTION!:
the electrical connection must be made exclusively by
technical personnel.
ATTENTION!:
in the event of an existing system, make sure that the load connection is compatible
with the ESC
plus
connection.
Make sure that the cable is of a suitable cross section for the motor breakaway starting current and in
single-phase installations, that the capacitor is suitable for the motor to be installed.
A reduced cable section could cause dangerous overheating and, apart from dangerous voltage
drops, damage to the actual system.
ATTENTION!:
with particular types of load , inverted motor rotation can cause elevated absorption
that is capable of damaging the machine and the system connected even after a very short time.
ATTENTION!: make sure to make the ground connection carefully using a yellow-green cable
of the same section as the cable used for the connection of the phases.
The failure to perform a correct ground connection can create serious risk to the operator.
Perform the electrical power connections as shown in FIG. 4a - 4b (only for 2-wire motors or pumps) -
5, making sure that the motor phases are connected in the correct sequence.
5.2 ADJUSTMENTS:
5.2.1:
ESC
plus
offers two methods for programming parameters for protection against overload and
dry running operation; manual
(MA)
and automatic
(AT)
.
5.2.2 Manual mode (MA):
after ESC
plus
is powered up, the initial self-diagnostics phase is followed by of the software version
and mains frequency, and the user can press
▲
to select manual mode
MA
followed by
■
to confirm
and enable ESC
plus
for operation (the display shows the current motor absorption value).
5.2.2.1:
setting the rated current in manual mode (indicates the current value over which the overload
protection trips):
after bringing the load to the maximum admissible absorption level in normal operating conditions, use
key
▲
to select parameter
AA
and press
■
to confirm. Press
▼
until the current reading starts flashing
on display, then press
▲
until the value on display is permanent and press
■
to confirm. The display
shows the flashing number
88
to confirm memorisation of the value (if no operation is performed for
more than 10 seconds the current value is memorised automatically). Ensure that the measured
current value is the rated value stated on the motor dataplate.
5.2.2.2:
setting
Cos
in manual mode: indicates the
Cos
threshold value, below which the dry
running alarm trips.
To calibrate, start up the motor (or pump) and bring it to the minimum admissible load in normal
operating conditions, then press
▲
to select the parameter
CP
and press
■
to confirm.
Press
▲
until the display starts flashing, then press
▼
until the current value on display is permanent,
after which press
■
to confirm. The display shows the flashing number
88
to confirm memorisation of
the value (if no operation is performed for more than 10 seconds the current value is
memorised automatically).
5.2.3 Automatic mode (AT):
after ESC
plus
is powered up, the initial self-diagnostics phase is followed by display of the software
version and mains frequency, and the user can press
▲
to select automatic mode
AT
followed by
■
to
confirm and enable ESC
plus
for operation (the display shows the current motor absorption value).
Ensure that the measured current value is the rated value stated on the motor dataplate.
Press
▲
to start the self-learning process for the current value and
Cos
.
The display shows the
flashing text
CL
, after which press
■
to confirm automatic calibration (if more than 10 seconds pass
before pressing
■
to confirm calibration, ESC
plus
automatically memorises the
current and
Cos
values).
Summary of Contents for ESC plus 3M
Page 48: ...45 SW...
Page 49: ...46 ESCplus 3M FIG 1...
Page 50: ...47 ESCplus 4T FIG 2...
Page 51: ...48 ESCplus 10T 15T FIG 3...
Page 52: ...49 FIG 4a PSC MOTOR PUMP...
Page 53: ...50 FIG 4b 2 WIRE MOTOR PUMP...
Page 54: ...51 FIG 5 THREE PHASE MOTOR PUMP...
Page 55: ......
