AI893 3BSE023675R1 ABB Analog Input TC/RTD IS 8 ch, ABB S800 I/O

• General info

  Article number	3BSC690141R1
  Type	Analog Input
  Signal specification	RTD or TC
  Number of channels	8
  Signal type	Differential
  HART	No
  SOE	No
  Redundancy	No
  High integrity	No
  Intrinsic safety	Yes
  Mechanics	S800

• Detailed data

  Resolution	15 bit + sign
  Input impedance	>10 MΩ
  Isolation	Groupwise isolated from ground
  Error	TC/mV: <20 µV ; RTD (0-400 Ω): <0.1 Ω ; RTD (0-4000 Ω): <1 Ω
  Temperature drift	TC/mV: <20 µV/10°C ; RTD (0-400 Ω): <0.1 Ω/10°C ; RTD (0-4000 Ω): <1 Ω/10°C
  Update cycle time	(no of active channels) x 125 + 125 ms
  Common mode voltage input	+/- 5V
  CMRR, 50Hz, 60Hz	>100 dB
  NMRR, 50Hz, 60Hz	>80 dB
  Rated insulation voltage	50 V
  Dielectric test voltage	500 V a.c.
  Power dissipation	0.5 W
  Current consumption +5 V Modulebus	Typ. 90 mA, Max. <125 mA

• Diagnostics
• Environment and certification
• Compability
• Intrinsic Safety parameters
• Dimensions

The AI893 Analog Input Module has 8 channels. The module includes Intrinsic Safety protection components on each channel for connection to process equipment in hazardous areas without the need for additional external devices.

The module can be configured for either 2 or 3-wire RTD sensors or for TC sensors. In TC mode, channel 8 be used for Cold Junction (ambient) temperature measurements, thus serving as CJ-channel for channel 1…7. The junction temperature may be measured locally on the MTUs screw terminals, or on a connection unit distant from the device. The cold junction temperature is measured with a 3-wire Pt 100 sensor. Alternatively, a fix junction temperature for the module may be set by the user (as parameter). Channel 8 may be used in the same manner as channel 1-7 when no CJ-temperature measurement is needed.

TU890 and TU891 Compact MTU can be used with this module and it enables three wire connection to the process devices without additional terminals. TU890 for Ex applications and TU891 for non Ex applications.