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ABB 085221-050控制数据输入输出模块
模拟输出可以连接到电压输入设备（例如。图表记录器），包括一个与每个回路，并将设备输入与电阻器并联。即。
使用100欧姆电阻器，并在图表上选择2伏的输入范围录音机有两个远程输入，分别为RESET和INHIBIT可配置为高激活或低激活操作模式。每个输入都是四通道控制卡的所有四个通道通用。
检查随系统提供的配置表，用于确定工厂配置的操作模式。
可以重新配置操作模式轻松使用连接到工程端口的计算机。
联系Zellweger Analytics或您当地的代理了解更多信息。
远程输入引脚的开关电平（启用时）为相对于直流系统0V，约+2V。
输入需要驱动电流小于5mA且与内部配置无关降到系统0V。
激活的高远程输入可能未连接或可以连接通过常开触点至+24V。远程输入将运行只要触点闭合。
有源低电平远程输入可通过正常方式连接至+24V闭合触点。
远程输入将在触点打开。
请勿让低输入处于活动状态，未连接的直流电源通过直流输入卡端子连接至系统57块TB1并通过四继电器接口卡。
直流输入卡提供二极管隔离，以允许连接两个独立的电源。
例如，电源衍生的直流电源和电池备用直流电源。
注意，电流将从电源中抽出输入最高电压，在某些情况下电流将为在两个输入之间共享。
两个输入端都有双+24V和0V端子，便于通过电源连接或并联输入源。
保险丝+24V输出是两个直流输入的组合提供用于为辅助设备供电的独立供电控制卡
注：1.在单独供电的控制系统中，直流连接是仍需要直流输入卡，以便为工程卡。
2.每个控制卡的电源必须为外部熔断器额定值最大2A。
由于两个原因，可能需要单独供电的控制卡：a、 如果当地或其他法规要求在以实现配电的最高完整性。
b、 在人口稠密的机架中，以减少底板。
f25 System 57 DC Input Card（系统57直流输入卡）电源在10A时熔断，以确保系统可靠运行，最大持续电流流入机架背板应小于8A。
在16通道机架中，大量填充了四通道催化控制卡底板电流可能会超过，特别是在传感器电缆较长的地方运行存在。
因此，一般来说，如果超过8个催化控制卡用在单个机架中，应为其供电使用单独供电方案。
REMOTE INPUT CONNECTIONS
The analogue outputs can be connected to voltage input device (eg. chart recorders) by including an external sense resistor in series with each loop and connecting the device input in parallel with the resistor. ie. Use a 100 ohm resistor and select an input range of 2V on the chart recorder.There are two remote inputs, RESET and INHIBIT, which are individually configurable for active high or active low operating modes. Each input is common to all four channels of the Four Channel Control Card. Check the configuration sheet supplied with the system to determine the factory configured operating modes. The operating mode can be reconfigured easily using a computer attached to the Engineering Port. Contact Zellweger Analytics or your local agent for more information. The switching level of the remote input pins (when enabled) is approximately +2V with respect to the dc system 0V. The inputs require less than 5mA drive current and irrespective of configuration are internally pulled down to system 0V. Active high remote inputs may be left unconnected or can be connected to +24V via a normally open contact. The remote input will operate whenever the contact closes. Active low remote inputs may be connected to +24V via a normally closed contact. The remote input will operate whenever the contact opens. Do not leave active low inputs unconnected.
Individually Powered Control Cards
Notes: 1. In individually powered control systems a DC connection is still required to the DC Input Card in order to provide power to the Engineering Card. 2. The supply to each control card must be externally fuse rated at 2A maximum. Individually powered control cards may be required for two reasons: a. Where the local or other regulations dictate individual connections in order to achieve the highest integrity for power distribution. b. In densely populated racks to reduce the current load on the backplane. The System 57 DC Input Card supply is fused at 10A and to ensure reliable operation of the system, the maximum continuous current flow in the rack backplane should be less than 8A. In 16 channel racks, substantially populated with four channel catalytic control cards, this backplane current can be exceeded, especially where long sensor cable runs are present. Therefore, as a general rule, where more than eight catalytic control cards are used in a single rack, these should be powered using the individually powered scheme. DC power is connected to the System 57 via the DC Input Card terminal block TB1 and via the Quad Relay Interface Cards. The DC Input Card provides diode isolation to permit the connection of two separate power supplies. eg. A mains derived dc power supply and battery backup dc supply. Note that current will be drawn from the supply input with the highest voltage and in some circumstances current will be shared between the two inputs. Each of the two inputs have twin +24V and 0V terminals for easy through power connection or paralleling of input sources. A fused +24V output, which is the combination of both dc inputs, is provided for powering ancillary devices
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