HIMA F3212A機(jī)器人模塊卡件
0 mA對(duì)應(yīng)于0的計(jì)數(shù)，20 mA對(duì)應(yīng)于32000的計(jì)數(shù)。在4至20 mA和0至20 mA范圍內(nèi)，可提供完整的12位分辨率。還可以配置4至20 mA增強(qiáng)范圍。在該范圍內(nèi)，0 mA對(duì)應(yīng)于-8000的計(jì)數(shù)，4 mA對(duì)應(yīng)于0（零）的計(jì)數(shù)，20 mA對(duì)應(yīng)于+32000的計(jì)數(shù)?？稍O(shè)置低報(bào)警限值以檢測(cè)4 mA至0 mA的輸入電流，從而在4至20 mA的應(yīng)用中提供開路故障檢測(cè)。4電流（mA）4至20mA范圍0 20 0 0至20mA范圍縮放數(shù)據(jù)單位（十進(jìn)制）4000圖281：輸入縮放ALG233模擬值在轉(zhuǎn)換器范圍內(nèi)縮放。工廠校準(zhǔn)將每位模擬值（分辨率）調(diào)整為滿量程的倍數(shù)（4μa/位）。此校準(zhǔn)使正常的12位轉(zhuǎn)換器具有4000個(gè)計(jì)數(shù)（通常212＝4096個(gè)計(jì)數(shù)）。數(shù)據(jù)在模擬范圍內(nèi)以4000個(gè)計(jì)數(shù)進(jìn)行縮放。數(shù)據(jù)的比例如上所示。9.9.5.4變化率警報(bào)PACSystems*RX3i系統(tǒng)手冊(cè)第10節(jié)GFK-2314T 2019年9月模擬輸入模塊404 ALG233可檢測(cè)每秒工程單位的負(fù)變化率和正變化率。當(dāng)任何一個(gè)“變化率”參數(shù)配置為非零時(shí)，模塊將取上一個(gè)樣本和當(dāng)前樣本之間的工程單位差，然后除以樣本之間的經(jīng)過時(shí)間。如果工程單位從上一個(gè)樣本到當(dāng)前樣本的變化為負(fù)值，則模塊將比率變化與負(fù)值變化率參數(shù)進(jìn)行比較。如果樣本之間的工程單位變化為正值，則模塊將比率變化與正值變化率參數(shù)值進(jìn)行比較。在任何一種情況下，如果變化率大于配置的變化率，則會(huì)發(fā)生變化率警報(bào)。模塊在報(bào)警后采取的行動(dòng)取決于已在診斷報(bào)告啟用和故障報(bào)告啟用參數(shù)中設(shè)置的已啟用變化率行動(dòng)。變化率采樣率參數(shù)確定模塊比較變化率的頻率?？捎糜诖藚?shù)的最小值為60ms，即，模塊可在每60ms后比較變化率。當(dāng)CPU轉(zhuǎn)換到RUN模式或模塊現(xiàn)場(chǎng)電源循環(huán)時(shí)，ALG233在啟動(dòng)變化率檢測(cè)前等待100ms。這是為了忽略輸入信號(hào)中的任何毛刺。9.9.5.5模塊狀態(tài)數(shù)據(jù)：ALG233 9.9.5.6信道輸入數(shù)據(jù)：ALM233模塊以其配置的輸入字報(bào)告其信道輸入數(shù)據(jù)，從其分配的信道開始0 mA corresponds to a count of 0 and 20 mA corresponds to a count of 32000. Full 12-bit resolution is available over the 4 to 20 mA and 0 to 20 mA ranges. 4 to 20 mA Enhanced range can also be configured. In that range, 0 mA corresponds to a count of -8000, 4 mA corresponds to a count of 0 (zero) and 20 mA corresponds to a count of +32000. A low alarm limit can be set up to detect input current from 4 mA to 0 mA, providing open-wire fault detection in 4 to 20 mA applications. 4 Current (mA) 4 to 20mA Range 0 20 0 0 to 20mA Range Scaled Data Units (decimal) 4000 Figure 281: Input Scaling ALG233 Analog values are scaled over the range of the converter. Factory calibration adjusts the analog value per bit (resolution) to a multiple of full scale (4 μA/bit). This calibration leaves a normal 12-bit converter with 4000 counts (normally 212 = 4096 counts). The data is scaled with the 4000 counts over the analog range. The data is scaled as shown above. 9.9.5.4 Rate of Change Alarms PACSystems* RX3i System Manual Section 10 GFK-2314T Sept. 2019 Analog Input Modules 404 The ALG233 can detect both Negative Rate of Change and Positive Rate of Change in Engineering Units per Second. When either of the Rate of Change parameters is configured to be non-zero, the module takes the difference in Engineering Units between the previous sample and the current sample, then divides by the elapsed time between samples. If the Engineering Unit change from the previous sample to current sample is negative, the module compares the rate change with the Negative Rate of Change parameter. If the Engineering Unit change between samples is positive, the module compares the rate change with the Positive Rate of Change parameter value. In either case, if the rate of change is greater than the configured rate, a rate of change alarm occurs. The actions taken by the module following the alarm depend on the enabled rate of change actions that have been set up in the Diagnostic Reporting Enable and Fault Reporting Enable parameters. The Rate of Change Sampling Rate parameter determines how frequently the module compares the Rate of Change. The minimum value which can be used with this parameter is 60 ms i.e., the module can compare the rate of change after every 60 ms. When the CPU transitions to RUN mode or the module field power is cycled, the ALG233 waits 100ms before starting Rate of Change detection. This is to ignore any glitches in the input signal. 9.9.5.5 Module Status Data: ALG233 9.9.5.6 Channel Input Data: ALG233 The module reports its channel input data in its configured input words, beginning at its assigned Channel
