ABB TU844 Termination Unit

General Information

• Article Number: 3BSE039293R1

• Type: Analog Input

• Signal Specification: 0–20 mA, 4–20 mA

• Number of Channels: 8

• Signal Type: Unipolar, Single Ended

• HART Support: Yes

• Sequence of Events (SOE): No

• Redundancy: Yes

• High Integrity: Yes

• Intrinsic Safety: No

• Mechanics: S800 Series

Detailed Data

• Resolution: 12-bit

• Input Impedance: 250 Ω (with shunt stick TY801 at current input)

• Isolation: Groupwise isolated from ground

• Under/Over Range:

• Over range: +12% (0–20 mA)

• Over range: +15% (4–20 mA)

• Error: Max. 0.1%

• Temperature Drift: Max. 50 ppm/°C

• Input Filter (Rise Time 0–90%): 190 ms (HW filter)

• Update Cycle Time: 10 ms

• Current Limiting: Built-in current-limited transmitter power

• Maximum Field Cable Length: 600 m (656 yards)

• Max Input Voltage (Non-Destructive): 11 V DC

• NMRR (50 Hz, 60 Hz): > 40 dB

• Rated Insulation Voltage: 50 V

• Dielectric Test Voltage: 500 V AC

• Power Dissipation: 2.4 W

• Current Consumption:

• +5 V Modulebus: 45 mA

• +24 V Modulebus: Max. 50 mA

• +24 V External: 4 mA + transmitter current (max. 260 mA)

Diagnostics

• Front LEDs:

• F (Fault)

• R (Run)

• W (Warning)

• Supervision:

• Internal voltage

• Field power input

• Field power output per channel

• Status Indication of Supervision:

• Module error

• Module warning

• Channel error

Environment and Certification

• CE Mark: Yes

• Electrical Safety Standards:

• EN 61010-1

• UL 61010-1

• EN 61010-2-201

• UL 61010-2-201

• Hazardous Location Approvals:

• Class I, Division 2 cULus

• Class I, Zone 2 cULus

• ATEX Zone 2

• Marine Certifications:

• ABS, BV, DNV, LR

• Operating Temperature: 0 to +55 °C (+32 to +131 °F)

• Approvals valid for +5 to +55 °C

• Storage Temperature: -40 to +70 °C (-40 to +158 °F)

• Pollution Degree: Degree 2 (IEC 60664-1)

• Corrosion Protection: ISA-S71.04: G3

• Relative Humidity: 5–95%, non-condensing

• Max Ambient Temperature:

• 55 °C (131 °F) standard

• 40 °C (104 °F) for vertical mounting in compact MTU

• Protection Class: IP20 (IEC 60529)

• Mechanical Operating Conditions: IEC/EN 61131-2

• EMC Compliance:

• EN 61000-6-4

• EN 61000-6-2

• Overvoltage Categories: IEC/EN 60664-1, EN 50178

• Equipment Class: Class I (IEC 61140, Earth protected)

• RoHS Compliance: Directive 2011/65/EU (EN 50581:2012)

• WEEE Compliance: Directive 2012/19/EU

Compatibility

• Compatible MTUs: TU834, TU844, TU845, TU854

• Keying Code: FD

Dimensions

• Width: 45 mm (1.77 in)

• Depth: 102 mm (4.01 in) / 111 mm (4.37 in) including connector

• Height: 119 mm (4.7 in)

• Weight: 0.15 kg (0.33 lbs)