ABB 81943A041-1容错控制器,81943A041-1说明书在线阅读
模块的主电源为PLC提供的隔离+24 VDC电源
电源。模块的输入/输出端子板上还为用户提供了两个端子
供电电压+24伏。这允许您提供备用电源，以便输出可以ABB 81943A041-1
如果内部电源丢失并且选择了保持最后状态，则继续保持其值。
你可以
还需要提供模块电压，以减少PLC隔离+24 VDC电源上的负载
供给当施加的电压高于隔离的+24 VDC时，将使用用户电源
电源电压范围为21.5伏至26.5伏。
ABB 81943A041-1容错控制器
模块中产生大约+24V的内部电压源，以驱动电流回路
输出。模块上的当前环路驱动程序是源类型驱动程序。这意味着
电流从电流回路输出流出，以便用户的负载可以恢复到公共状态。A.
电阻器与公共回路串联，以限制接地回路电流。为了将电容负载和噪声降至最低，所有模块的现场连接应使用良好的
绞合屏蔽仪表电缆等级。屏蔽应连接至接地
用户端子连接器块。GND连接提供基板的访问
（机架接地）可更好地抑制任何屏蔽漏电流引起的噪声。
模块电源工作时，模块面板上的LED亮起。这个
模块对现场接线和
背板通过使用光学隔离。此模块可以安装在5的任何I/O插槽中
或90-30系列PLC系统中的10槽基板。如果用户提供的供应品不用于
为模块供电，最多可在
底板。
The primary power source for the module is the isolated +24 VDC power supplied by the PLC
power supply. Two terminals are also provided on the module’s I/O terminal board for user
supplied +24 volts. This allows you to provide a standby power supply so that the outputs can
continue to hold their value if the internal supply is lost and Hold-Last-State is selected. You may
also want to supply the module voltage to reduce the load on the PLC isolated +24 VDC power
supply. The user supply will be used when the applied voltage is higher than the isolated +24 VDC
supply, which can range from 21.5 volts to 26.5 volts.
An internal voltage source of about +24V is generated in the module to drive the current loop
outputs. The current loop drivers on the module are source type drivers. This means that a positive
current flows out of the current loop outputs so that the user’s loads can be returned to common. A
resistor is placed in series with the common return to limit ground loop currents. To minimize thecapacitive loading and noise, all field connections to the module should be wired using a good
grade of twisted, shielded instrumentation cable. The shields should be connected to GND on
the user terminal connector block. The GND connection provides access to the baseplate
(frame ground) resulting in superior rejection of noise caused by any shield drain currents.
An LED on the module’s faceplate is ON when the module’s power supply is operating. The
module provides electrical isolation of externally generated noise between field wiring and the
backplane through use of optical isolation. This module can be installed in any I/O slot of a 5
or 10-slot baseplate in a Series 90-30 PLC system. If user provided supplies are not used to
power the module, a maximum of three Analog Current Output modules can be installed in a
baseplate.
