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ABB AI835A 3BSE051306R1 Thermocouple/mV Input Module
The AI835/AI835A 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, N, R, S and T, for AI835A also D, L and U.
One of the channels (Channel 8) may be configured for “Cold Junction” (ambient) temperature measurements, thus serving as CJ-channel for Ch. 1...7. 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 for AI835A also from the application. Channel 8 may be used in the same manner as Ch. 1...7 when no CJ-temperature measurement is needed.
General info
| Article number | 3BSE051306R1 |
| Type | Analog Input |
| Signal specification | -30..75 mV linear; TC types B, C, D, E, J, K, L, N, R, S, T and U |
| Number of channels | 8 |
| Signal type | See table in S800 Modules and Termination Units, 3BSE020924 |
| HART | No |
| SOE | No |
| Redundancy | No |
| High integrity | No |
| Intrinsic safety | No |
| Mechanics | S800 |
Detailed data
| Resolution | 15 bits |
| Input impedance | > 1 MΩ |
| Isolation | Groupwise isolated from ground |
| Error | Max. 0.1% |
| Temperature drift | Typ. 5 ppm/°C, Max. 7 ppm/°C |
| Update cycle time | 280 + 80 * (number of active channels) ms at 50 Hz; 250 + 70 * (number of active channels) ms at 60 Hz |
| Maximum field cable length | 600 meters (656 yards) |
| CMRR, 50Hz, 60Hz | 120 dB |
| NMRR, 50Hz, 60Hz | > 60 dB |
| Rated insulation voltage | 50 V |
| Dielectric test voltage | 500 V a.c. |
| Power dissipation | 1.6 W |
| Current consumption +5 V Modulebus | 75 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, power supply low Channel error: open-circuit CJ-channel (ch 8): < -40 °C (-40°F) and > 100 °C (212°F) |
| Status indication of supervision | Module Error, Module Warning, Channel error (8) |
Environment and certification
| CE mark | Yes |
| Electrical safety | EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201 |
| Hazardous Location | C1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2 |
| Marine certification | ABS, BV, DNV, LR |
| Temperature, Operating | 0 to +55 °C (+32 to +131 °F), approvals are issued for +5 to +55 °C |
| Temperature, Storage | -40 to +70 °C (-40 to +158 °F) |
| Pollution degree | Degree 2, IEC 60664-1 |
| Corrosion protection | ISA-S71.04: G3 |
| Relative humidity | 5 to 95 %, non-condensing |
| Max ambient temperature | 55 °C (131 °F), for vertical mounting in compact MTU 40 °C (104 °F) |
| Protection class | IP20 according to IEC 60529 |
| 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) |
| RoHS compliance | DIRECTIVE/2011/65/EU (EN 50581:2012) |
| WEEE compliance | DIRECTIVE/2012/19/EU |
Compatibility
| Use with MTU | TU810, TU812, TU814, TU818, TU830, TU833 |
| Keying code | BA |
Dimensions
| Width | 45 mm (1.77”) |
| Depth | 102 mm (4.01”), 111 mm (4.37”) including connector |
| Height | 119 mm (4.7”) |
| Weight | 0.22 kg (0.49 lbs.) |
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