Grundfos ALPHA SOLAR B, Инструкция по установке и эксплуатации

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8.3.4 Control signal data levels
Maximum rating Symbol Value
PWM frequency input with high-
speed optocoupler
f 100-4000 Hz
Guaranteed standby power
consumption
< 1 W
Rated input voltage - high level
U
iH
4-24 V
Rated input voltage - low level
U
iL
< 1 V
High-level input current
I
iH
< 10 mA
Input duty cycle PWM 0-100 %
PWM frequency output, open
collector
f 75 Hz ± 5 %
Accuracy of output signal
regarding power consumption
-
± 2 % (of PWM
signal)
Output duty cycle PWM 0-100 %
Collector emitter breakdown
voltage on output transistor
U
c
< 70 V
Collector current on output
transistor
I
c
< 50 mA
Maximum power dissipation on
output resistor
P
R
125 mW
Zener diode working voltage
U
z
36 V
Maximum power dissipation in
Zener diode
P
z
300 mW
9. Setting of the product
To set the product, use the button on the operating panel. Every
time you press the button, the pump setting is changed. The LEDs
will indicate the chosen control mode. See the table below. A cycle
is four button presses.
Display Control mode
Constant curve 1
Constant curve 2
Constant curve 3
PWM profile C
Signal off: 1 green flash per second
Signal on: 12 green flashes per second
The pump has been factory-set to constant curve 3.
9.1 Connection of the PWM input signal
To enable the external control mode (PWM profile C), you need a
signal cable connected to an external system.
Conductor Colour
Signal input Brown
Signal reference Blue
Signal output Black
The cable must be connected to the control box via a mini
superseal plug. See the figure below.
TM064414
Mini superseal plug
Related information
8.3 Control signal
9.2 Setting the signal connection
1. Make sure that the pump is turned off.
2. Locate the PWM signal connection on the pump.
The three pins inside the signal connection are not energised.
3. Connect the signal cable with the mini superseal plug.
4. Switch on the power supply.
5. Select the PWM control mode by pressing the button on the
operating panel.
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English (GB)