User Manual for BFS-i10
www.levitronix.com
PL-3505-00, Rev00, DCO# 21-249
10
•
Power Supply Rating:
Depending on the operating point, one power supply may be used to power
several bearingless fans simultaneously, or a supply with lower power rating may be used (see also
section 3.1.2).
•
Input Power Limitation:
An optional input power limit may be set via
Levitronix
®
Service Software
or
Modbus protocol. If set, actual acceleration rate and/or maximum speed are reduced dynamically such
that the specified limit is not exceeded (±20 W tolerance). The extent to which they are reduced
depends on the power limit as well as the operating point. The dashed line in
example for 600 W at operating point with maximum power consumption. The fan accelerates with
2000 rpm / s up to 5000 rpm, then gradually reduces the acceleration rate to prevent further increase
in input power. The maximum reachable speed in this operating point at 600 W input power is around
6500 rpm (see also steady state consumption,
).
3.1.2 Power Supply
It is highly recommended to evaluate used power supplies under demanding operating situations like fast
braking from maximum speed and during power on and take-off of the fan rotor.
The power rating of the supply may be chosen according to the desired operating point / maximum speed /
number of fans per supply
shows a selection of power supplies tested at
Levitronix
®
with according speed and/or input power
limitations. Please note that only the general functionality of the
BFS-i10
in combination with the given supplies
was tested, and no recommendations in terms of reliability, efficiency, certifications, cost effectiveness or
similar are given.
Manufacturer
Article Name Characteristics
Value / Feature
Recommended Limits
PULS Power
Supplies
QS40.481
Voltage Input / Output
85
– 264 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 2 fans per power supply:
Input power limit 700 W (peak)
Speed limit 6000 rpm (continuous)
Power Output continuous / peak
960 W / 1440 W for 4 s
Certification / Standards
CB, UL, CSA, Semi F47
Mean Well
HRPG-1000-48
Voltage Input / Output
85
– 264 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 2 fans per power supply:
Input power limit 484 W (peak & continuous)
Speed limit 6000 rpm (continuous)
Power Output
1008 W
Certification / Standards
CB, UL, CSA
TDK Lambda
RWS1000B-48
Voltage Input / Output
85
– 265 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 3 fans per power supply:
Input power limit 316 W (peak & continuous)
Speed limit 5000 rpm (continuous)
Power Output
1008 W
Certification / Standards
CB, UL, CSA, Semi F47
Cosel
PJA1000F-48
Voltage Input / Output
85
– 264 V AC (auto. detection) / 48 V DC
- No limit required (1 fan per power supply)
- Example limits for 4 fans per power supply:
Input power limit 232 W (peak & continuous)
Speed limit 4500 rpm (continuous)
Power Output
1008 W
Certification / Standards
CB, UL, CSA
Traco Power
TSP-600-148-M
Voltage Input / Output
85
– 264 V AC (auto. detection) / 48 V DC
- Recommended limits (1 fan per power supply):
Input power limit 580 W (peak & continuous)
Speed limit 6500 rpm (continuous)
Power Output
600 W
Certification / Standards
CB, UL, CSA, Semi F47
TDK Lambda
RWS600B-48
Voltage Input / Output
85
– 265 V AC (auto. detection) / 48 V DC
- Recommended limits (1 fan per power supply):
Input power limit 580 W (peak & continuous)
Speed limit 6500 rpm (continuous)
Power Output
600 W
Certification / Standards
CB, UL, CSA, Semi F47
Traco Power
TIB 480-148
Voltage Input / Output
85
– 264 V AC (auto. detection) / 48 V DC
- Recommended limits (1 fan per power supply):
Input power limit 700 W (peak)
Speed limit 6000 rpm (continuous)
Power Output continuous / peak
480 W / 720 W for 4 s
Certification / Standards
CB, UL, CSA, Semi F47
Traco Power
TIB 240-124
Voltage Input / Output
85
– 264 V AC (auto. detection) / 24 V DC
- Recommended limits (1 fan per power supply):
Input power limit 340 W (peak)
No speed limit (automatically limited to 4000 rpm,
if 24 V supply is detected
Power Output continuous / peak
240 W / 360 W for 4 s
Certification / Standards
CB, UL, CSA, Semi F47
Table 4: Specification of tested power supplies
Additionally tested and passed, but discontinued by manufacturer: Cosel PLA600F-48 (600 W, limits as stated for other 600 W supplies)
The following power supplies were tested but failed to recover the DC voltage quick enough during fast braking
and accelerating tests, triggering a shutdown to error state on the fan:
Mean Well RSP-1000-48 / Mean Well SDR-960-48
3.1.3 Inrush Current
The
BFS-i10
features an inrush current limitation circuit. A peak value of 25 A with an I
2
t value of 1.7 A
2
s was
measured by hot-plugging the
BFS-i10
with 5 m cable length to a 1000 W power supply.
