Levitronix BPS-4000 - Controller Temperature

User Manual for BPS-4000
www.levitronix.com
PL-4016-00, Rev11, DCO# 18-057
18
3.4.2 Controller Temperature
Depending on the ambient temperature and the placement of the controller additional cooling may be
required (see Figure 21). To improve cooling of the controller, place the device into a moving air stream. If
the controller is mounted in a compact area or adjacent to additional heat sources (e.g. a 2
nd
controller)
ensure that there is sufficient ventilation.
Figure 21: Temperature curves of controller LPC-4000 vs. flow and speed
Typical curves measured with pump head LPP-4000.5.
The above curves are measurements of the controller temperature at 25 °C ambient. Equation (Eq. 2) shows
how to calculate the controller temperature for at other ambient temperatures based on this curve.
re temperatu
re temperatuController
)25()25()(
23 Figure
AmbientT
T
CTCTTTT
A
C
AACAC
see
=
=
−+=
  
(Eq. 2)
77
87
97
107
117
127
137
147
157
167
0 10 20 30 40 50 60 70
25
30
35
40
45
50
55
60
65
70
75
0 25 50 75 100 125 150 175 200 225 250 275 300
[F]
[gallons/min]
[°C]
[liters/min]
Ambient temp. = 25 C
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
PWM Drive = 5 kHz
PWM Bearing = 20 kHz
Fan: Temp. Controlled
Firmware: F1.48 Revision > 07
7000 rpm
6000 rpm
5000 rpm
8000 rpm
Absolute Temperature