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参数资料
| 型号： | LT1701-7 |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 550 W AC-DC REG PWR SUPPLY MODULE |
| 封装： | CASE T01, MODULE |
| 文件页数： | 9/32页 |
| 文件大小： | 1000K |
| 代理商： | LT1701-7 |
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BCD20023 Rev. AA, 3-Sep-2008
Page 17 of 32
www.power-one.com
T Series Data Sheet
500 Watt AC-DC Converters
Table 14: System monitoring.
Signal status and LED display status depending on the situation of the various system elements
Possible Situation
Open collector output
LED
System Good Power Down
Sys OK
Vo OK
Error
All OK
low
on
off
No mains and battery OK or no mains and Vo
> Vt
2
high
low
off
on
Unit inhibited and battery OK or unit inhibited and Vo
> Vt
2
Internal error
2
Sys In input
3
high
low
off
on
off
No mains and battery low or no mains and Vo
< Vt
2
high
off
on 1
Short circuit on LT/UT output, Vo
< 4 V
high
off
Current limit LT/UT output, Vo
> 4 V, Vo < Vt
2
low
high
on
off
on
Battery chargers: sensor not connected or out of range
high
low
off
on
1
LED is on until the output capacitors are discharged.
2
Sys In connected to Vo–.
3
Sys In not connected to Vo– (single T status monitoring) or system status monitoring.
Display Status of LEDs
LED Sys OK
A green LED corresponds to the signal System Good. It lights,
if no internal or external error is detected.
LED Vo OK
Another green LED indicates the output voltage status,
corresponding to the signal Power Down. The LED lights, as
long as Vo exceeds the upper threshold level and has not fallen
below the low threshold level Vt.
LED Error
This red LED lights, if one or more of the following conditions
are detected:
– Input overvoltage
– Input undervoltage (mains failure)
– Output overvoltage
– Output short circuit
– Output voltage below threshold Vt
– Internal overtemperature
– Internal circuit fault
– i/Vcr remote control input error, such as:
- Inhibit voltage <2.5 V (rectifier models)
- Remote control voltage Vcr out of range 5.3 – 14 V
(battery chargers)
- Sensor not connected, open remote control input.
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