Electrical Connections - DAB ESC plus Serie Installations- Und Wartungsanleitungen

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
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
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
▲
on display, then press
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
Press until the display starts flashing, then press
▲
after which press ■ to confirm. The display shows the flashing number 88 to confirm memorisation of
the value
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
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 ■
current and Cos values).
ENGLISH
the ESC plus connection.
until the value on display is permanent and press ■ to confirm. The display
▲
to select the parameter CP and press ■ to confirm.
▲
(if no operation is performed for more than 10 seconds the current value is
to confirm calibration, ESC plus automatically memorises the
to select manual mode MA followed by ■ to confirm
▲
until the current reading starts flashing
▼
until the current value on display is permanent,
▼
to select automatic mode AT followed by ■ to
▲
7