参数资料
型号: FPSS1U
厂商: TDK-Lambda Americas Inc
文件页数: 25/57页
文件大小: 0K
描述: RACK 3 SLOT FOR FPS1000
视频文件: Redundant Power Systems
标准包装: 1
系列: FPS
附件类型: 机架系统
适用于相关产品: FPS1000 系列
配用: 285-1239-ND - PWR SUP FNT END 48V 1008W 21A
285-1238-ND - PWR SUP FNT END 32V 992W 31A
285-1237-ND - PWR SUP FNT END 24V 960W 40A
其它名称: 285-1240
7.5.3 Internal temperature measurement
The internal ambient temperature is measured to provide information of the safe operation of the power supply. The
internal ambient temperature is usually higher than the power supply air intake temperature due to internal power
dissipation. As the power dissipation varies with the load, the internal ambient temperature increases with the load.
Refer to Fig 7-2 for typical internal temperature rise above the air intake temperature versus the load.
Internal temp.
rise ( ° C)
15
10
5
0
25
50
75
100
% of rated load
Fig 7-2: Internal temperature rise vs. load
Internal temperature calculation example:
1. Hex readback: 68 (0110 1000).
2. Convert hex readback to decimal: 104
3. Calculate the measured temperature:
Temp=104*0.391=40.664 o C
7.6 Typical application diagram
A typical application is described in Fig 7-3.
ON/OFF
CONTROL
CLOCK
SCL
SIGNAL
RETURN
ON/OFF
+S
+V
+
I C
PC
RS232
RS232
CABLE
RS232 TO
2
CONVERTOR
DATA
GND
SDA
A0
FPS1000
A1
A2
-V
-S
-
LOAD
ADDRESS
SETTING
Fig 7-3: Typical application of I 2 C interface
22
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