Speed Control - Helios MultiVent MV EC125 Notice De Montage Et D'utilisation

Installation and Operating Instructions
®
MultiVent MV EC
6 .1

Speed control

– Speed control with speed potentiometer PU/A
For variable and direct control or nominal value preset of EC fans with potentiometer input. Additionally equipped with
an enabling switch and LED-display for the operating status (dependant on feature of fan type). The potentiometer is
attached directly to the potentiometer input of the fan control system. This has therefore a potentiometer supply of e.g.
10 V DC and an input control signal of 0-10 V DC.
Basic circuit diagram:
Example: Variable speed control
Fig .9
– Speed control with universal control system EUR EC
For variable control or adjustment of single and three-phase EC fans with an input control signal of 0 - 10 V DC.
Connection examples of the basic diagram are mentioned further below.
Basic circuit diagram:
Example 1: Temperature control with additional function and differential temperature control
Fig .10
Example 2: Differential pressure control and air velocity control
Fig .11
9 9
EN