100017240 TURCK | Alldatasheet

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Technical content

Edition • 2023-07-21T15:46:44+02:00 BL20 electronic module

2 Analog Inputs; HART

Rated voltage from the supply terminal 24 VDC Nominal current from field supply ð 20 mA Nominal current from module bus ð 30 mA Power dissipation, typical ð 1 W Inputs Input type 0/4…20 mA Input resistance > 250 ò Max. input current 24 mA Electrical isolation electronics for the field level Output connectivity Screw, tension spring Maximum limiting frequency analog 50 Hz Linearity ð 0.1 % Basic fault limit at 23 °C < 0.1 % Repeatability 0.1 % Temperature coefficient < 150 ppm/°C of full scale Resolution 16 Bit Measuring principle Delta Sigma Measured-value display 16 Bit signed integer, NE43(PA), extended Cycle time ð 250 ms Number of diagnostics bytes 4 Number of parameter bytes 8 ■ 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 ■ HART Functional principle BL20 electronic modules are plugged into the purely passive base modules which are used for connection of field devices. The separation of connection level and electronics simplifies maintenance considerably. Furthermore flexi- bility 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 higher-level fieldbus through the use of gateways. Note This module is a customer-specific variant and not compatible with the standard mod- ule. The standard HART input module is the BL20-2AIH-I (6827331).

Edition • 2023-07-21T15:46:44+02:00 Dimensions (W x L x H) 12.6 x 74.1 x 55.4 mm Approvals CE 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

Edition • 2023-07-21T15:46:44+02:00 Compatible base modules Dimension drawing Type Pin configuration BL20-S4T-SBBS 6827046 Spring clamp Wire Termination BL20-S4S-SBBS 6827047 Screw connection 2-wire Connection for Passive HART Sensors 4-wire connection for passive HART sensors