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參數(shù)資料
| 型號： | IRMDSS1 |
| 廠商： | International Rectifier |
| 英文描述： | IR1110 Soft Start IC Reference Design Kit For AC Motor Drives, UPS, Welders, and other applications |
| 中文描述： | IR1110軟啟動IC參考設計套件交流電機驅(qū)動器，不間斷電源，焊工，和其他應用程序 |
| 文件頁數(shù)： | 9/23頁 |
| 文件大小： | 121K |
| 代理商： | IRMDSS1 |
9
Remove the following snubber and associated components:
C13, C14, R43, R44, D1, D2, R45, D3, C15, C16, R46, R47, D5, D6,
R48, D7, C17, C18, R49, R50, D9, D10, D11.
On-board dropping resistors and zener diodes create the
required internal +5V and -5V power for the IR 1110, from the
applied +-15V input. The rise time of the +-15V voltages during
power-up should not be less than 1 millisecond.
The primary source for the power supply must be derived
from the ac input voltage of the rectifier bridge. It cannot be taken
from the main dc bus voltage, because this voltage does not exist
until after the IR 1110 has been energized. During power-up, the
input to the power supply must be switched on synchronously with
the rectifier input voltage.
4(k)
External shut-down.
External shut-down of the rectifier bridge is implemented by applying a
15mA input to opto-coupler U7, at JP5/3 (+) and JP5/4.
5 . Fault feedback signals
.
couplers U6 and U4, as shown in Fig 9(a) for the IR 1110 Reference Design,
as factory-set. U6 delivers a multiplexed 3-phase loss/1-phase loss signal;
U4 delivers a low line-voltage signal.
An integral part of the circuit modification described in Section 4(h),
is that opto coupler U6 delivers a 3-phase loss fault signal only, without
the multiplexed 1-phase loss signal. The one-phase loss signal is now
multiplexed with the low line signal. The fault signals for this mode are
illustrated in Fig 9(b).
Isolated fault feedback signals are delivered at the outputs of opto-
6 . Use of the PCB with an external SCR half-controlled bridge.
For test purposes, the IR 1110 Reference Design PCB by itself can be
used with an external SCR half-controlled bridge. This is done by
detaching the PCB from the IRKH Addapak modules, and making wired
connections between the PCB and the external SCR bridge.
Fig 10 shows a connection diagram. Note that the wires from JP2, U,
V, W, and the wire from JP3/1, should be run as a twisted bundle. The
gate and auxiliary cathode leads for each SCR should be run as twisted
pairs. Also note that zero ohm links must be connected across the open
pads R13, R17, R21 that connect to the auxiliary cathode slots on the PCB.
IRMDSS1
7 . Inductance.
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