VMX-PFE
Pfe Soft starters series offer an inexpensive solution for starting up to 22 kW. With internal bypass, there is no need for additional units and there is also less heating of the electrical box. They need an external 24V DC power source. DIN rail mounting possible.
Technical details
230-460 V, three-phase
24 V DC, max. 200 mA (external power supply)
1-30 s (adjustable)
0-30 s (adjustable)
3x maximal current for 23s, at Trip Class 10
up to 5, with additional fan up to 30
IP20
0-40 ° C, without condensation
CE, UL, C-Tick
- Size 1 (PFE-02 – PFE-10): 140x45x120 mm (h x w x d)
- Size 2 (PFE-12 – PFE-18): 165x55x120 mm (h x w x d)
Choose the right soft starter
Fairford divides applications into 4 classes, based on which to select the appropriate soft start for the application. The classes are as follows:
- Easy Start (Trip Class 2) - 3x starter current for 5s
- Standard Trip (Trip Class 10) - 3x start current for 23s / 3.5x start current for 17s
- Medium Heavy Start (Trip Class 20) - 4x start current for 19s
- Heavy Start (Trip Class 30) - 4x start current for 29s
Typical representatives of each class are:
- Easy start: Compressors, mixers and conveyor belts that start unloaded (standard load is available if load is possible)
- Standard start: Fans (low inertia), pumps, partial compressors,…
- Moderate start-up: compressors, larger fans, heavy conveyor belts,…
- Hard start: mills, crushers,…
After selecting the appropriate class, select soft start according to the motor power on the table below.
Models
- PFE-02: 4,9 A; 2,2 kW*
- PFE-04: 6,5A; 3 kW*
- PFE-06: 8,5A; 4 kW*
- PFE-08: 11,5 A; 5,5 kW*
- PFE-10: 15,5A; 7,5 kW*
- PFE-12: 22A; 11 kW*
- PFE-14: 29A; 15 kW*
- PFE-16: 35A; 18,5 kW*
- PFE-18: 41 A; 22 kW*
* Note: The maximum power rating of the soft-start engine is applicable to Trip Class 2. In the case of higher (heavier-start) mode, the data/maximum power is of the appropriate class. You can find the relevant information in Soft Starter sizing ugide.