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BT 20


With the BT20, we offer an operator panel for complete machine operator control. Thanks to tight front panel installation, the BT20 achieves a degree of protection of IP65. The marker strips are inserted from the sealed inner side of the device which ensures that this degree of protection is maintained. Extensive tests have shown that the BT20 is both reliable and suitable for use in industrial applications.

It supports the following communication protocols:

3964 R, ABB, AB-DF1, AB-DH485, AEG KS functions, AEG-Modbus, Bosch BUEP19, Bosch BUEP19E, Crouzet, Jetter, Mitsubishi, Modbus, Moeller Sucom A, Omron, SEW-Eurodrive, Siemens L1, Siemens MPI, Siemens PPI, (additional protocols on request)

Supported bus systems are:
Interbus-S, Profibus-DP, CAN, Modbus+


  • Full-graphics monochrome display, backlit
  • Extended temperature range: -20 ... 60 °C
  • 8 user-programmable function keys (as option
    additional 24, or 48 function keys with LED)
  • Numeric keypad
  • Integrated language selection
  • Error diagnostics with 4 priorities
  • Flash memory with power failure protection
  • Portable project and/or recipe memory

Technical Data

Display LCD monochrome
Resolution 128 x 240 pixels
Background lighting LED or CFL
Function keys 8 (+ 24 with LED for BT20-24; + 48 with LED for BT20-48)
Memory 384 KB Flash
Interfaces RS232/422/485, TTY
Power supply 24 V DC (protection against polarity reversal)
Current consumption 250 mA (for BT20-0); 300 mA (for BT20-24); 350 mA (for BT20-48))
Ambient temperature. 0 ... 45 °C (option: -20 ... 60°C)
Dimensions (WxHxD) BT20-0: 288x168x50 mm; BT20-24: 288x242x50 mm; BT20-48: 288x288x50 mm
Degree of protection IP 65 (front panel)
Pollution degree II (to DIN EN 61131-2)
Schwingfestigkeit DIN EN 61131-2
Class of equipment III (to DIN EN 50178)
Vibration resistance DIN EN 61131-2

Your contact person

Sales Department
  +49 (7141) 2550-663

Further information


Your contact person

  +49 (7141) 2550-663