6. Electrical connection
DANGER
Electric shock
Death or serious personal injury
‐
All electrical connections must be carried out by a
qualified electrician in accordance with local
regulations.
DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product. Make sure that the power supply
cannot be switched on accidentally.
DANGER
Electric shock
Death or serious personal injury
‐
Connect the pump to protective earth. Connect the
pump to an external main switch with a minimum
contact gap of 3 mm in all poles.
DANGER
Electric shock
Death or serious personal injury
‐
In case of an insulation fault, the fault current may be a
pulsating DC. Observe national legislation about
requirements for and selection of Residual Current
Device (RCD) when installing the pump.
The pump is not a safety component and cannot be used
to ensure functional safety in the final appliance.
•
The pump requires no external motor protection.
•
Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
•
Connect the pump to the power supply with the power cable.
TM065819
Control box connections
L
PE
N
IN
REF
OUT
TM069075
Superseal power connector
L
PE
N
IN
REF
OUT
TM069076
Mini superseal plug
6.1 Control signal connection
If you do not need the signal connection, cover it with a blanking
plug.
You can control the pump with a low-voltage PWM (pulse-width
modulation) signal.
The PWM signal is a method for generating an analog signal using
a digital source.
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 length must not exceed 3 metres.
The cable must be connected to the control box via a mini
superseal plug.
TM064414
Mini superseal plug
6.2 Digital signal converter
To replace UPS SOLAR with a new ALPHA SOLAR pump which
fulfils the ErP requirements, we offer two solutions:
•
Exchange the existing SOLAR controller to a controller suitable
for high-efficiency pumps.
•
Keep the old controller, and use the phase control. Use a signal
converter, SIKON HE, which can convert the existing phase
control to a PWM signal for the ALPHA SOLAR.
When you use SIKON HE, you can replace the conventional 230 V
UPS SOLAR pump with a Grundfos ALPHA SOLAR pump without
having to change the controller. The function of the performance
control of the pump is maintained.
TM065809
Digital signal converter (SIKON HE)
For further information about the controller, see
10
English (GB)
