6827021 TURCK | Alldatasheet
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Technical content
Edition • 2023-07-21T16:14:39+02:00 BL20 electronic module
2 Analog Inputs for Current
BL20-2AI-I(0/4...20MA) Type BL20-2AI-I(0/4....20MA) ID 6827021 Number of channels 2 Rated voltage from the supply terminal 24 VDC Nominal current from field supply ð 12 mA Nominal current from module bus ð 35 mA Power dissipation, typical ð 1 W Inputs Input type 0/4…20 mA Input resistance < 0.125 kò Max. input current 50 mA Electrical isolation electronics for the field level Output connectivity Screw, tension spring Maximum limiting frequency analog 50 Hz Basic fault limit at 23 °C < 0.2 % Repeatability 0.05 % Temperature coefficient < 300 ppm/°C of full scale Resolution 16 Bit Measuring principle Delta Sigma Measured-value display 16 bit signed integer 12 bit full range left-justified Cycle time ð 10 ms Number of diagnostics bytes 2 Number of parameter bytes 2 ■ Fieldbus and connection technology inde- pendent ■ Protection class IP20 ■ LEDs indicate status and diagnostic ■ Electronics galvanically separated from the field level via optocouplers ■ 2 analog inputs 0/4…20 mA Functional principle BL20 electronic modules are plugged into the purely passive base modules which are used for connection of field devices. Maintenance is significantly facilitated due to separation of the connection level from the module electronics. Furthermore flexibility is enhanced because the base modules provide a choice of tension spring or screw connection technology. The electronic modules are completely inde- pendent of the type of higher level field bus through the use of gateways.
Edition • 2023-07-21T16:14:39+02:00 Dimensions (W x L x H) 12.6 x 74.1 x 55.4 mm Approvals CE, cULus, zone 2, Class I, Div. 2 Ambient temperature 0…+55 °C Storage temperature -25…+85 °C Relative humidity 15…95 %, no condensation allowed Vibration test Acc. to EN 61131 Shock test Acc. to IEC 60068-2-27 Drop and topple acc. to IEC 68-2-31 and free fall to IEC 68-2-32 Electromagnetic compatibility Acc. to EN 50082-2 Protection class IP20 MTTF 605 years acc. to SN 29500 (Ed. 99) 20 °C
Edition • 2023-07-21T16:14:39+02:00 Compatible base modules Dimension drawing Type Pin configuration BL20-S3T-SBB 6827044 Tension spring connection with external sensor supply BL20-S3S-SBB 6827045 Screw connection with external sensor supply Wiring Diagram BL20-S4T-SBBS 6827046 Tension spring connection BL20-S4S-SBBS 6827047 Screw connection 2-wire Connection 3-wire Connection
Edition • 2023-07-21T16:14:39+02:00 Accessories Type code Ident-No. Dimension drawing ZBW5-2BETÄTIGUNGSWERKZEUG6827129 Tension spring tool