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ABB AI843 TC/mV Analog Input Module 3BSE028925R1 -30 mV to +75 mV

The AI843 Thermocouple/mV Input Module provides 8 differential input channels for Thermocouple/mV measurements. Measurement ranges configurable per channel are: -30 mV to +75 mV linear, or TC Types B, C, E, J, K, L, N, R, S, T and U. A separate Pt100 channel is used for “Cold Junction” (ambient) temperature measurements, thus serving as CJ-channel for Ch. 1...8.

The junction temperature may be measured locally on the MTUs screw terminals, or on a connection unit distant form the device. Alternatively, a fix junction temperature for the module may be set by the user (as parameter) or a junction temperature set by the application.

Features and benefits

8 differential input channels for thermocouple/mV
Single or redundant operation
A separate channel is used as CJ-channel (4-wire Pt100 RTD)
Variety of thermocouples with the following characteristics: B, C, E, J, K, L, N, R, S, T and U
16 Bit resolution (A/D converter)
Inputs are monitored for wire-break open-circuit

General info

Type	Analog Input
Signal specification	-30..75 mVlinear, TC types B, C, E, J, K, L, N, R, S, T and U
Article number	3BSE028925R1
Number of channels	8
Signal type	See table
HART	No
SOE	No
Redundancy	Yes
High integrity	No
Intrinsic safety	No
Mechanics	S800

Detailed data

Resolution	16 bits
Input impedance	> 1 MΩ
Isolation	Groupwise isolated from ground
Error	Max. 0.1%
Temperature drift	Typ. 10 ppm/°C, Max. 25 ppm/°C
Input filter (rise time 0-90%)	1.1 kHz
Update cycle time	320 + 80 * (no of active channels) ms at 50 Hz 267 + 67 * (no of active channels) at 60 Hz
Maximum field cable length	600 meters (656 yards) or max. 500 Ω
CMRR, 50Hz, 60Hz	100 dB
NMRR, 50Hz, 60Hz	> 40 dB
Rated insulation voltage	50 V
Dielectric test voltage	500 V a.c.
Power dissipation	1.5 W
Current consumption +5 V Modulebus	60 mA
Current consumption +24 V Modulebus	50 mA
Current consumption +24 V external	0

Diagnostics

Front LED’s	F(ault), R(un), W(arning)
Supervision	Module error: reference channels outside limits, power supply low Channel error: open-circuit, CJ channel error (ch 8): out of range <-40°C (-40°F) and >100°C (212°F) Junction channel) Channel error Linear: none
Status indication of supervision	Module Error, Module Warning, Channel error

Environment and certification

CE mark	Yes
Electrical safety	IEC 61131-2, UL 508
Hazardous Location	C1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2
Marine certification	-
Protection rating	IP20 according to IEC60529
Corrosive atmosphere ISA-S71.04	G3
Climatic operating conditions	0 to +55 °C (Storage -40 to +70 °C), RH=5 to 95 % no condensation, IEC/EN 61131-2
Pollution degree	Degree 2, IEC 60664-1
Mechanical operating conditions	IEC/EN 61131-2
EMC	EN 61000-6-4 and EN 61000-6-2
Overvoltage categories	IEC/EN 60664-1, EN 50178
Equipment class	Class I according to IEC 61140; (earth protected)
Max ambient temperature	55 °C (131 °F), for vertical mounting in compact MTU 40 °C (104 °F)
RoHS compliance	EN 50581:2012
WEEE compliance	DIRECTIVE/2012/19/EU

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Categories	ESP Controller
Brand Name:	ABB
Model Number:	AI843
Place of Origin:	India (IN)
MOQ:	1
Price:	Negotiations
Delivery Time:	2-3 working days
Packaging Details:	New original box
Rated Insulation Voltage:	50V
Dielectric Test Voltage::	500VAC
Current Consumption +5 V Modulebus:	70mA
Power Dissipation:	1.6W