Power Supply; Inrush Current - Levitronix BFS-i06 User Manual

3.1.2 Power Supply

The power rating of the supply may be chosen according to the desired operating point, maximum speed and
number of fans per supply – see Figure 10, Figure 11 for continuous and peak power consumption respectively.
An optional input power limit may be set via Levitronix
acceleration rate and/or maximum speed are reduced dynamically such that the specified limit is not exceeded
(±10 W tolerance). The dashed line in Figure 11 shows an example for 120 W at operating point with maximum
power consumption. Past 5000 rpm, acceleration rate is gradually reduced until maximum possible speed at
120 W is reached (around 10500 rpm, see also Figure 10).
It is highly recommended to evaluate power supplies under demanding operating situations like fast braking
from maximum speed and during power on and take-off of the fan rotor.
Table 4 shows a selection of power supplies tested at Levitronix
functionality of the BFS-i06 in combination with the given supplies was tested, and no recommendations in
terms of reliability, efficiency, certifications, cost effectiveness or similar are given.
®
Manufacturer Levitronix
Model Article Number
Traco Power
100-40032
TIB 240-148
Mean Well
100-40033
HRPG-1000-48
PULS Power
-
QS40.481
Traco Power
-
TIB 480-148
Traco Power
100-40013
TSP-600-148-M
TDK Lambda
-
HWS300-48
Traco Power
100-40030
TIB 480-124
Traco Power
-
TIB 240-124
Traco Power
100-40031
TIB 120-124
Note 1: Interface panel FIP-2.1 is available for quick connection of multiple fans, see section 4.3
The following power supplies are not recommended (insufficient recovery after fast braking):
TDK-Lambda RWS series, Cosel PLA / PJA series

3.1.3 Inrush Current

The BFS-i06 relies on the inrush current limiter of the power supply and does not have a built-in inrush current
limiter. Therefore, high inrush currents may occur if the fan is directly connected to an already powered DC
socket. These high inrush currents might disturb certain power supplies.
A peak value of 150 A with an I
length to a 480 W power supply. It is therefore recommended to connect the bearingless fan to the power
supply before powering up the supply.
PL-3502-00, Rev04, DCO# 24-054 This document and its content is confidential and the property of Levitronix
disclosed or used for manufacturing or sale of Levitronix
Characteristics Value / Feature
48 V DC / 85 – 264 V AC
Voltage Output / Input
Power Output 240 W / 360 W for 4 s
48 V DC / 90 – 264 V AC
Voltage Output / Input
Power Output 1008 W
48 V DC / 90 – 264 V AC
Voltage Output / Input
Power Output 960 W / 1440 W for 4 s
48 V DC / 85 – 264 V AC
Voltage Output / Input
Power Output 480 W / 720 W for 4 s
48 V DC / 85 – 264 V AC
Voltage Output / Input
Power Output 600 W
48 V DC / 85 – 265 V AC
Voltage Output / Input
Power Output 336 W
24 V DC / 85 – 264 V AC
Voltage Output / Input
Power Output 480 W / 720 W for 4 s
24 V DC / 85 – 264 V AC
Voltage Output / Input
Power Output 240 W / 360 W for 4 s
24 V DC / 85 – 264 V AC
Voltage Output / Input
Power Output 120 W / 180 W for 4 s
Table 4: Specification of tested power supplies
2 2
t value of 2.9 A s was measured by hot-plugging the BFS-i06 with 5 m cable
® products without the expressed written consent of Levitronix
®
Service Software or Modbus protocol. If set, actual
® . Please note that only the general
Recommended Use
1 x BFS-i06
3 x BFS-i06
4 x BFS-i06 (Input power limit 240 W)
4 x BFS-i06
2 x BFS-i06
-
-
2 x BFS-i06
4 x BFS-i06 (Input power limit 170 W)
1 x BFS-i06
2 x BFS-i06 (Input power limit 170 W)
1 x BFS-i06 (Input power limit 170 W)
® and shall not be reproduced, distributed,
User Manual for BFS-i06
www.levitronix.com
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