ABB 工业触摸屏 PP系列 PP877 3BSE069272R2 PP875 3BSE092977R1 PP865

ABB 工业触摸屏 PP系列 PP877 3BSE069272R2 PP875 3BSE092977R1 PP865 3BSE042236R1

PP877 3BSE069272R2 PP875 3BSE092977R1 PP865 3BSE042236R1

有关4线RTD配置的更多信息，参见电路笔记CN-0381。 
 

在3线模式下，来自AIN4的引脚补偿激励电流也会流经3 kΩ返回电阻，在AIN0处产生一个附加电压：250 μA × 3 kΩ = 0.75 V。因此，AIN0处的总电压等于2.71 V + 0.75 V = 3.46 V，这违反了裕量要求。 所以，在3线模式下，各激励电流必须降至100 μA以提供足够的裕量。 
 

PGA增益可用来提高测量分辨率。 对于Pt100 RTD，建议使用8倍增益（因为Pt100值比Pt1000值小10倍）。 
 

为实现所需精度，RTD本身必须由主机控制器通过软件进行线性化，参见电路笔记CN-0383。 
 

热电偶测量 
 

如图3所示，热电偶连接在AIN+和AIN−端子之间。 AIN4引脚为热电偶提供3.3 V ÷ 2 = 1.65 V的偏置电压。 热电偶电压在AIN1和AIN3之间测量，因为热电偶信号非常小，通常推荐使用32倍或64倍的PGA增益。 

PM802F-Z - ABB ADVANT-800XA - Base Unit 4 MB battery-buffered RAM PM 802F-Z
PM861AK01 - ABB ADVANT-800XA - PM861A Processor Unit Kit 3BSE018157R1
PM861K01 - ABB ADVANT-800XA - PM861 Processor Module 3BSE018105R1
PM861K02 - ABB ADVANT-800XA - PM861 Processor Module 3BSE018160R1
PM864 - ABB ADVANT-800XA - AC800M Module PM864A
PM864AK02 - ABB ADVANT-800XA - PM864AK02 Redundant Processor Unit 3BSE018164R1
PP825A - ABB ADVANT-800XA - PP825A Panel 3BSE042240R3
PP835 - ABB ADVANT-800XA - Panel 800 3BSE042234R1
PU514A - ABB ADVANT-800XA - PU514A Real-Time Accelerator (RTA) board for PCI 3BSE032400R1
RAIO-01 - ABB ADVANT-800XA - RAIO-01 Analog I/O Extension Module
RLM01 - ABB ADVANT-800XA - RLM01 Redundancy Link Module RLM-01
RX835 - ABB ADVANT-800XA - Touch Cover for PP835 Panel 3BSE042247R1
SB822 - ABB ADVANT-800XA - SB822 Rechargeable Battery Unit 3BSE018172R1
SD822Z - ABB ADVANT-800XA - Power Supply Device 3BSC610054R1
SS822Z - ABB ADVANT-800XA - Power Voting Unit 3BSC610055R1
SS832 - ABB ADVANT-800XA - Voting Device 3BSC610068R1
SV541 - ABB ADVANT-800XA - SV541 Power Distribution Unit 3BSE004265R1
TB850 - ABB ADVANT-800XA - CEX-Bus Terminatior 3BSC950193R1
TK801V006 - ABB ADVANT-800XA - TK801V006 Modulebus Extension Cable 3BSC950089R2
TK811V015 - ABB ADVANT-800XA - TK811V015 POF Cable 1.5m Duplex 3BSC950107R1
TK812V015 - ABB ADVANT-800XA - POF Cable 1.5 m Simplex 3BSC950118R1
TK812V050 - ABB ADVANT-800XA - POF Cable 5 m Simplex 3BSC950118R2
TP851 - ABB ADVANT-800XA - Base Unit for PROFIBUS DP Interface 3BSE018118R1
TP854 - ABB ADVANT-800XA - Base Unit for DP-V1 Interface CI854 3BSE025349R1
TP857 - ABB ADVANT-800XA - Base Unit for BC810 3BSE030192R1
TU848 - ABB ADVANT-800XA - Module Termination Unit 3BSE042558R1
TU849 - ABB ADVANT-800XA - Module Termination Unit 3BSE042560R1
PM875-2 - ABB ADVANT-800XA - AC 870P-PM 875 Controller 3BDH000606R1
PP885 - ABB ADVANT-800XA - PP885 High Performance Touch Panel 15.4" 3BSE069276R1
3BSC690104R2 - ABB ADVANT-800XA - PP345 Process Panel PP 345
3BSC950202R1 - ABB ADVANT-800XA - TK821V020 Battery Cable TK821V020
P-HB-RFO-80010000 - ABB ADVANT-800XA - RFO-800 Hnet Repeater Module, S800