Data Communication / Bus - Cosmo Multi 3 Montage- Und Bedienungsanleitung

1. INSTALLATION
The terminals marked PWM / 0-10 V are control outputs for high-efficiency pumps (for connec-
tion see illustration).
Electrical connection of a high-efficiency pump (HE pump)
Speed control of a HE pump is possible via a PWM signal / 0-10 V control. The pump has to be
connected to the relay (power supply) as well as to one of the PWM outputs of the controller.
In the Output adjustment channel one of the PWM control types as well as a relay have to be
selected (see page 109).
A | B
PWM/0-10V
NOTE:
When Grundfos Direct Sensors
block to PE.
Connect the analogue Grundfos Direct Sensors™ or FRH humidity sensors to the Ga1
and Ga2 inputs.
The controller is supplied with power via a mains cable. The power supply of the device must be
100 ... 240 V~ (50 ... 60 Hz).
Connect the mains cable to the following terminals:
Neutral conductor N
Conductor L
Protective earth conductor ⏚ (common terminal block)
WARNING! DANGER OF ELECTRIC SHOCK!
L' is a fused contact permanently carrying voltage.
Î Always disconnect the device from power supply before
opening the housing!
Conductor L' (L' is not connected with the mains cable. L' is a fused contact permanently carry-
ing voltage.)
NOTE:
For more details about the commissioning procedure see page 101.
1.3

DATA COMMUNICATION / BUS

The controller is equipped with a VBus
The connection is to be carried out at the terminals marked VBus (any polarity).
One or more VBus ® modules can be connected via this data bus.
NOTE:
During remote parameterisation, the  symbol will be displayed, the controller will not
carry out any control function.
L' L
N
blue
yellow/green brown
Power supply
230 V~
Power supply
Pump
are used, connect the sensor ground common terminal
TM
® for data transfer and energy supply to external modules.
99