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TC Input/RTD Input Module (Isolated Channels)
These modules receive signals from mV, thermocouple (TC), RTD, and potentiometer (POT). These are isolated between the field and the system as well as between each channel.
They can be used in dual redundant configuration.
These two modules can be used in dual redundant configuration.
Items |
Specifications |
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Model |
AAT145 |
AAR145 |
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Number of input channels |
16, isolated channels |
16, isolated channels |
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Input signal |
TC: JIS C1602:1995 (*1), IEC584:1995 Type J, K, E, B (*2), R, S, T, N mV: -100 to 150 mV, -20 to 80 mV |
RTD: JIS C1604:1997 (*3), IEC751:1995 Pt100 (3-wire type) POT: Total resistance 100 Ω to 10 kΩ Span resistance: 50 % or more of total resistance |
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Switching input signals |
TC/mV can be set individually for CH1 to CH16. |
RTD/POT can be selected individually for CH1 to CH16. |
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Allowable input voltage |
±5 V |
±5 V |
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Withstanding voltage |
Between input and system: 500 V AC (for single card: 1500 V AC), For 1 minute Between input channels: 200 V AC, For 1 minute |
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Input resistance |
Power ON |
1 MΩ or more |
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Power OFF |
1 MΩ or more |
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Accuracy |
±40 µV |
RTD: ±150 mΩ POT: ±0.2 %/FS |
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Allowable total resistance of signal source plus wiring |
1000 Ω or less |
150 Ω or less (wiring resistance per wire)(*4) |
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Effect of allowable signal source resistance (1000 Ω) |
±20 µV |
— |
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Reference junction compensation accuracy |
±1 °C (*5) (6) |
— |
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Measurement current |
— |
RTD: 1 mA |
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Data update period |
1 s |
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Burn-out |
All channels can be set together. Setting: not available/available (UP/DOWN) detection time: 60 s |
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Temperature drift |
±80 µV/10 °C |
RTD: ±0.3 Ω/10 °C POT: ±0.4 %/10 °C |
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Maximum current consumption |
350 mA (5 V DC) |
350 mA (5 V DC) |
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Weight |
0.3 kg |
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External connection |
Dedicated cable (KS1) |
Dedicated cable (KS8/AKB335) |
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*1: Model AAT145 is also in compliance with JIS C1602:1981.
*2: Type B dose not carry out temperature compensation and can not measure under 44 °C.
*3: Model AAR145 is also in compliance with JIS C1604:1989 (Pt100, JPt100).
現(xiàn)場總線功能模塊的工程實(shí)施與FCS其他功能模塊相同。現(xiàn)場總線功能模塊和其他FCS功能模塊在操作和監(jiān)視環(huán)境方面也是相同的。橫河電機(jī)DCS的現(xiàn)場總線應(yīng)用在工程、操作和監(jiān)視方面沒有任何額外的需求。
更多現(xiàn)場總線信息請點(diǎn)擊這里。
應(yīng)用現(xiàn)場總線的最大優(yōu)勢是對現(xiàn)場設(shè)備的高效維護(hù)。橫河電機(jī)提供資產(chǎn)管理軟件包——工廠資源管理器(PRM)，用以進(jìn)行設(shè)備管理和診斷。通過PRM，現(xiàn)場總線的優(yōu)勢得以優(yōu)化，使得整個系統(tǒng)的維護(hù)更加高效。
PRM通過現(xiàn)場總線收集設(shè)備維護(hù)信息，將其存儲在PRM數(shù)據(jù)庫中。通過現(xiàn)場總線即可進(jìn)行現(xiàn)場設(shè)備的維護(hù)。因此維護(hù)工程師無需深入偏遠(yuǎn)地區(qū)和危險區(qū)域的設(shè)備現(xiàn)場，工作效率得到了極大的提高。
審計跟蹤管理在控制和維護(hù)系統(tǒng)中是非常重要的。所有由PRM進(jìn)行的設(shè)備維護(hù)工作都會被記錄和存儲下來，檢索起來也非常方便。
通過設(shè)備管理信息的綜合管理，可以預(yù)測設(shè)備的更新周期和設(shè)備故障的發(fā)展趨勢。這種技術(shù)可最小化設(shè)備問題對工廠運(yùn)行的影響，也可以計劃和安排維護(hù)工作以及零件的采購。
除現(xiàn)場總線設(shè)備外，PRM也可以為已有設(shè)備創(chuàng)建數(shù)據(jù)庫。數(shù)據(jù)庫中記錄并管理維護(hù)信息，以支持工廠中所有設(shè)備的整體全面的計劃維護(hù)。
