Table of Contents
Advertisement
INSTALLATION
INSTALLATION
13 ELECTRICAL CONNECTIONS
9
The following is mandatory:
− have an omnipolar magneto-thermal circuit breaker and
a disconnecting switch compliant with the prevailing
standards of the installation country
− respect the polarity of the L1 (Phase) - N (Neutral) con-
nections
− use cables with insulation and cross section conforming
to applicable standards (minimum cross section 1.5 mm
− make sure the appliance is connected to an efficient
ground (earth).
0
It is strictly forbidden to use pipes of any kind to ground the
appliance.
The manufacturer is not responsible for any damages due to
the missing device grounding.
Refer to the manual supplied with the solar controller for de-
tails of all electrical connections, programming, etc..
The power supply and PWM signal connections must be ar-
ranged by the technician.
To carry out the electric connections:
− remove the frontal insulation (1).
− the cables must be inserted through the proper passages
(F).
1
− connect the connectors as shown in the figure.
1
PWM CONNECTOR
Brown - Input PWM
Blue - Reference signal
2
POWER SUPPLY
Brown - F
Blue - N
Yellow/green -
F
1
2
⏚
To control the circulator in on/off mode, the PWM cable is not
required.
To control the circulator in modulating mode by using a solar
regulator, verify the compatibility between the chosen regula-
tor and the PWM signal (see following paragraph "CONTROL SIG-
NALS").
CONTROL SIGNALS
The circulator can be controlled with a low voltage PWM digital
signal (pulse width modulation). The speed changes according
)
2
to the input signal, as indicated in paragraph "PWM input sig-
nal".
Here below are the main characteristics required of the PWM
signal output by the associated regulator.
9
Check the characteristics of your regulator PWM signal to en-
sure they comply with the features below. Different signals
could irreversibly damage the circulator on-board electron-
ics.
PWM low-voltage digital signal
The PWM square wave signal was designed for a frequency in-
terval between 100 and 4000 Hz. The PWM signal is used to set
circulator speed.
Example of Duty cycle
U
iH
U
iL
T
Period
d
Duty cycle (t/T)
UiH
High voltage level of input signal
UiL
Low voltage level of input signal
IiH
Input signal current
Example
T = 2 ms (500 Hz)
t = 0,6 ms
d % = 100 x 0.6 / 2 = 30 % IiH ≤ 10 mA (depending on UiH)
8
T
t
Evaluation
UiH = 4-24 V
UiL ≤ 1 V
Advertisement
Table of Contents
