Relay Modules
Speed controller
In particular for easy speed adjustment of fans and pumps DOLD developed a range of 1- and 3-phase speed controllers. Their function principle is based on the phase-angle control by thyristors.
- Easy speed variation to adjust the load to the driving machine
- Less EMC problems compared to frequency converters, therefore no need for shielded cables saves cost
- Phase-angle control to adjust the speed of non-complex pumps or fan drives
- Also suited for ohmic loads
To adjust the speed of exhaust air fans for canteen kitchens or for temperature control of electrical heaters, for example.
Speed controllers and phase controllers | ||||||||
| Function | Power [kW] | controlled phases |
Diverse signalling outputs |
Ext. start signal |
Temperature monitoring |
housing Style: Width [mm] |
Type | |
|---|---|---|---|---|---|---|---|---|
| 1-phase AC- motors 230 V | 3 AC-Motoren 400 V | |||||||
| with analog control 4- |
0.3 | 1 | + | + | Distribution board: 53 | IN 9017 | ||
| Standard | 1.5 | 1 | + | + | + | for outdoor installation: 100; 122 |
SX 9240.01 | |
| Standard | 5.5 | 3 | + | + | + | for outdoor installation: 100; 122; 168 |
SX 9240.03 | |