3BSE008544R1 ABB AI820 Analog Input Module

Description

The AI820 Analog Input Module has 4 differential, bipolar current/voltage inputs. Each channel can be either a voltage or current input. The current inputs can withstand an accidental maximum normal mode 30 V d.c. connection. To protect the current input circuit against dangerous input levels, such as accidentally connecting a 24 V source, the resistor rating of the 250W current sense resistors is about 5 Watts. This is intended only to temporarily protect one channel at a time.

The module distributes the external transmitter supply to each channel. This adds a simple connection (with extended MTUs) to distribute the supply to external 2-wire transmitters. There is no current limiting on the transmitter power terminals.

All 4 channels are isolated from the ModuleBus in one group. Power to the input stages is converted from the 24 V on the ModuleBus.

Features and Benefits

• 4 channels for -20…+20 mA, 0…20 mA, 4…20 mA, -10…+10 V, 0…10 V, 2…10 V, -5…+5 V, 0…5 V, 1…5 V d.c. bipolar differential inputs
• One group of 4 channels isolated from ground
• 14 Bit resolution plus sign
• Input shunt resistors protected to 30 V d.c.
• The input withstands HART communication

General Info

• Article number: 3BSE008544R1
• Type: Analog Input
• Signal specification: -20…+20 mA, 0(4)…20 mA, -10…+10 V, 0(2)…10 V
• Number of channels: 4
• Signal type: Bipolar differential
• HART: No
• SOE: No
• Redundancy: No
• High integrity: No
• Intrinsic safety: No
• Mechanics: S800

Detailed Data

• Resolution: 14 bit plus sign
• Input impedance: 200 kΩ ± 25% (voltage mode, common mode), 800 kΩ ± 25% (voltage mode, normal mode), 250 Ω (current input)
• Isolation: Groupwise isolated from ground (RIV=50 V)
• Under/over range: ± 15%
• Error: Max. 0.1%
• Temperature drift: Voltage: Max. 70 ppm/°C, Current: Max. 50 ppm/°C
• Input filter (rise time 0-90%): 40 ms
• Current limiting: Transmitter power can be current limited by the MTU
• Maximum field cable length: 600 meters (656 yards)
• Dielectric test voltage: 500 V a.c.
• Power dissipation: 1.7 W
• Current consumption +5 V Modulebus: 80 mA
• Current consumption +24 V Modulebus: 0
• Current consumption +24 V external: 70 mA

Diagnostics

• Front LEDs: F(ault), R(un), W(arning)
• Supervision: Internal Power Supply
• Status indication of supervision: Module Error, Module Warning, Channel error

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, 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, TU830, TU833
• Keying code: BB

Dimensions

• Width: 45 mm (1.77”)
• Depth: 102 mm (4.01”), 111 mm (4.37”) including connector
• Height: 119 mm (4.7”)
• Weight: 0.2 kg (0.44 lbs.)