25
INSTALLATION
Electronic circuit
PWM output
PWM input
Reference
signal
Opto-isolator
Pump electronics
Technical specifications
Maximum power
Symbol
Value
PWM input frequency
f
100-4000 Hz
Consumption in stand-by
< 1 W
High voltage level of the
input signal
UiH
4-24 V
Low voltage level of the
input signal
UiL
< 1 V
Input signal current
IiH
< 10 mA
Input Duty cycle
PWM
0-100%
2.14
0-10V circulation pump control
The regulator allows the control in modulating mode (0-10V) of
one circulation pump (as an alternative to standard 230Vac cir-
culation pumps).
To enable pump control set parameter 135 = 1.
13
12
11
10
9
8
7
6
5
4
3
14
15
16
2
1
MO2
PC
PI
L - PC/PS/PI
0 - 10V
PWM
GND
0 - 10V
PWM
GND
N
⏚
⏚
L - DHW (N.O.) / PB / PI
N
M02
High-voltage terminal board
PI
Central heating system pump
PC
Thermal unit circulation pump
