EA EA-HV 900 Series, Manual

Page: 8 / 18

© EA Elektro-Automatik, DE-41747 Viersen, Helmholtzstr. 31-33, Tel. 02162-3785-0, Fax. 02162-16230
8
描述
/ Description
设定电压和电流
输出电压和电流可通过前板的两个电位器进行粗调和细
调。操作模式由两
LED
灯指示出来：
“CV” =
恒压
(
绿灯
)
“CC” =
恒流
(
红灯
)
输出电压（外部电压）的远程设定
远程设定输出电压时，需按表格连接
0...10V
外部控制电
压。
0V
外部电压相当于输出端上的
0V
电压。
10V
外部电压
则相当于电源的额定输出电压。根据
14
页引脚分布连接外
部电压。
此时前板上电压调节用电位器失去作用。
输出电流的远程设定
远程设定最大输出电流时，需连接一
0...10V
外部控制电
压。
0V
外部电压相当于输出端上的
0A
电流。
10V
外部电压
则相当于电源的额定输出电流。根据
14
页引脚分布连接外
部电压。
此时前板上电流调节用电位器失去作用。
经数字接口的远程控制
本机还可配上一
IEEE
总线接口或以太网接口。利用该接口可
用电脑控制电压和电流。手动操作与远程控制之间的转换由
发送给机器的第一个指令而自动转换。电源上的
" EXTERN "
灯指示为外控状态。
若需转回手动模式，可使用
"LOCAL"
按钮（仅针对
IEEE
总
线）。或者用
*RST
指令，它也可重设接口，并将产品转回
手动控制。
如果数字接口因某个原因没有反应，可关闭产品然后再次
打开。
本型号电源具有下列功能:
测量实际电压
/
电流
设定电压/电流值
待机（输出开
/
关）
电流控制激活
(CC)
Setting voltage and current
Output voltage and output current are adjustable with two
potentiometers coarse and fine on the front panel. The
operation mode is indicated by two LEDs:
"CV" = Constant Voltage (green)
"CC" = Constant Current (red)
Remote setting of the output voltage (ext. voltage)
For remote setting of the output voltage connect a external
control voltage of 0...10V according to the table. An external
voltage of zero volt (0V) is equivalent to 0V on the output,
10V external is equivalent to the nominal output voltage
of the power supply. The external voltage is connected
according to the pin assignment on page 14.
The potentiometer for voltage adjustment on the front panel
is out of function.
Remote setting of the output current
For remote setting of the max. output current connect a
external control voltage of 0...10V. An external voltage of
zero volt (0V)is equivalent to 0A on the output, 10V external
is equivalent to the nominal output current of the power
supply. The external voltage is connected according to the
pin assignment on page 14.
The potentiometer for current adjustment on the front panel
is out of function.
Remote control via digital interface (optional)
The device can be optionally equipped with an IEEE bus
or Ethernet interface. With this interface it is possible to
control voltage and current by means of a computer. The
change-over between manual operation and remote control
happens automatically with the first command that is sent
to the device. The LED " EXTERN " on the power supply will
indicate the state of the external control.
To switch back to manual operation, pushbutton "LOCAL"
can be used (only with the IEEE bus). Alternatively, the
command *RST will also reset the interface and switch the
device back to manual control.
In case the digital interface does not react anymore, due to
any reason, switch the unit off and on again.
Following functions are available with this power supply:
Measure actual values of voltage/current
Set values of current/voltage
Standby(output on/off)
Current Control Active (CC)