IS200VSVOHB电源模块
在数据转换和y影响几个点。单极单极信号或范围在rl操作期间不改变极性；例如，电压或反向连接时，单色输入将产生最小值，并且如果诊断为有效的欠量程或开路故障。双极性双极性信号可以在操作中反转极性。反向信号连接双极输入将产生相反符号的数据。接地回路当导线在多个地方接地时，接地之间的差异会导致电流在中产生电压降。如果还使用了导线，则这些电压降会产生精度误差或值。如果使用单点接地，则位置y之间的电压差仍以所需信号出现。通过使用差分或isolad输入并从远程源运行separa返回，这一点被忽略了。这保持了sigl的内部性，并且接地电压在接收端显示为mon模式电压。电流回路这是美国仪器学会在ANSIISAS中定义的标准回路。信号级别是三种类型的信号源，定义了类型和。这些与使用的数量相对应。变送器的隔离会影响所需的输入类型。当使用nisolad输入时，可通过电流回路和或电源之间具有隔离的电流传感器提供隔离。本标准仅涵盖隔离或单端输入。标准中没有很好地涵盖在s中使用的n的差分输入以及在n出现时将多个电流回路连接在一起的n，并且n引入了关于mons和ground位置的附加应用。F Alog Input Sysm High level s Alog s August Controlr数据表F表。Alog输入规格输入范围：电压：伏特+伏特电流：毫安分辨率：默认缩放位。每sp接通电压微伏。micro per sp on missing code over bit on voltage missing codes over bit on current User scaling y根据所使用的因子，在低位或位中引入跳过的代码。准确度：校准仪表设置为底座转换器上的满sca伏特±毫伏。C F时的误差为：基极转换器电压±。完全sca±。路基转换电流±。完全sca±。鲁尔膨胀器电压±。完全值±。鲁尔膨胀机电流±。完全sca±。在用户缩放值之前，为零和正满sca连续自校准。通常需要现场校准；存在零调整。基本转换器上的微调器调整V输入时的全量程值。对于关键应用，可重置参考老化补偿。精度：线性度±。整个负-正范围内的完整sca。温度系数±PPM每C典型值±PPM每电压±PPM每电流输入阻抗：电压输入：在直流交流阻抗KΩ时大于兆欧。mfd容量。电流输入：欧姆。精密分路监控模式抑制：电压范围峰值信号输入必须在ANLG的+和V之间。灵敏度：在上述限值内的模式信号响应通常为dB CMRR，对应a。电压模式下V输入的完整sca读数。超出监控模式范围的连续输入信号可导致快速转换，而不会引起警报。
in the data conversion and y affect several points. Unipolar Unipolar sigls or ranges do t ange polarity during rl operation; for examp volts or Reversed connection a unipolor input will produce minimum lue and if diagstics are ailab underrange or open faults. Bipolar Bipolar sigls can reverse polarity in operation. Reversed sigl connections a bipolar input will produce data of opposi sign. Ground Loop When a conducr is grounded in more than one place differences between grounds can induce currents producing voltage drops in the . If the conducr is also used carry an alog sigl these voltage drops produce an accuracy error or isy lues. If a sing point ground is used the voltage difference between locations y still appear in with the desired sigl. This is overe by using differential or isolad inputs and running a separa return from the remo source. This preserves the ingrity of the sigl and the ground voltages appear as mon mode voltage at the receiving end. Current Loop This is a standard alog inrface defined by the Instrument Society of America in ANSIISAS. The sigl vel is Three types of sigl sources are defined Types and . These correspond the number of s used. The isolation of the transmitr y impact the type of input required. When nisolad inputs are used isolation y be provided by means of a current transducer that has isolation between the current loop andor power supply. The Standard covers only isolad or mon singended inputs. Differential inputs ofn used in s and connecting several current loops gether as ofn occurs with s are t covered well in the Standard and ofn introduce additiol plication regarding location of mons and grounds. F Alog Input Sysm High vel s Alog s August Controlr Data Sheet F Tab . Alog Input Specifications Input Ranges: Voltage: volts + volts Current: milli Resolution: Default Scaling bit . microvolts per sp on voltage . micro per sp on missing codes over bits on voltage missing codes over bits on current User scaling y introduce skipped codes in the lower or bits depending upon the facrs used. Accuracy: Calibration Facry set at full sca volts ± millivolts on Base Converr . errors at C F are: Base Converr Voltage ±. of full sca ±. of lue Base Converr Current ±. of full sca ±. of lue Expander Voltage ±. of full lue ±. of lue Expander Current ±. of full sca ±. of lue Base Converr Contily selfcalibras for zero and positive full sca before user scaling lues. Field calibration t rlly required; there is zero adjustment. A trimpot on the Base Converr adjusts full sca lue at V input. For critical applications this can be reset pensa for ageing of the reference. Accuracy: Linearity ±. of full sca over entire negative positive range. mperature Coefficient ± PPM per C typical ± PPM per C voltage ± PPM per C current Input Impedance: Voltage Inputs: Grear than megohms at DC AC impedance K ohms in with . mfd capacir. Current Inputs: ohm . precision shunt mon Mode Rejection: Voltage Range Peak sigl input must be between + and volts with respect the ANLG . Sensitivity: Response mon mode sigls within the above limits is typically dB CMRR corresponding a . full sca reading for a V input at volts mon mode. Continuous input sigls beyond the mon mode range can result in abrl conversions without causing alarms.
