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Indicator RQ Profibus

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Digital AMPLIFIER with Profibus DP-V1 interface

Led Weight display, 7 red segments, 5 digits 7mm high, 3 push button.

On-board communications interfaces: Rs232, Profibus DP-V1.

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Indicator RQ Profibus Indicator RQ Profibus Schema

Technical Specifications

Power supply24 V direct current 10% protected against polarity inversion, protection with resettable fuse
Max power consumption2 W
IsolationClass II
Installation CategoryCategory II
Operating temperature-10 / +50 C (14 / 122 F) Humidity Maximum 85% non-condensing
Storage temperature-10 / +60C (-4 / +140F)
DisplayNumeric with 5 red led digits 7 segments each (h 7 mm)
Led2 LED with 3 mm
Keyboard3 keys (behind red front cover)
Overall dimensions110 mm x 120 mm x 35 mm / 4.33 x 4.72 x 1.38 in (l x h x p)
MountingSupport for DIN rail or OMEGA bar
Case materialBlend PC/ABS self-extinguishing
ConnectionsRemovable screw terminals. Pitch screws terminal blocks 5.08 mm
Load cell input featuresMaximum 4 cells with 350 Ω in parallel (or 8 cells with 700 Ω)
Power supply load cells4 V
Linearity< 0.01% of full scale
Temperature deviation< 0.001% of full scale/C
Internal resolution24 bit
Measuring rangeFrom -2.6 mV/V to +2.6 mV/V
Output rate4 Hz - 123 Hz Selectable
Number of weight decimalsfrom 0 to 3 decimal digit
Zero / FS CalibrationBy push-buttons
Cell cable interruption checkAlways present
Serial portRs232 half duplex
 Max. cable length15m (Rs232c)
 Baud rate1200, 2400, 4800, 9600, 19200, 38400, 115000 selectable
Field busPROFIBUS DP-V1: From 9.6 kbit/sec to 12 Mbit/sec
Conforms to standardsCompliance to EMC norms: EN61000-6-2, EN61000-6-3, Compliance electric safety: EN 61010-1
For the complete and latest technical specifications, please refer to the technical data sheet which can be downloaded here:
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Type7 pins Terminal 5.08 mm pitch 6 wires load cell options
2- Excitation
3+ Excitation
4+ Reference
5- Reference
6- Signal
7+ Signal
TypeTerminal block 9P pitch 5.08 Profibus
8RS232 Tx
9RS232 Rx
10RS232 GND
Type8 pins Terminal 5.08 mm pitch Profibus
23Power supply 24 Vdc
24Power supply 0 Vdc
Connections  Indicator RQ Profibus


General precautions to be followed in the installation and assembly of load cells:

  • Follow the direction of application of force on the load cell
  • Do not exceed the limits of the temperature as indicated in the data sheet
  • Do not remove labels from the load cell
  • Adequately protect the cables with sleeves or channels
  • Carry out on each load cell a ground connection with suitable cable, shunt on mounting accessories
  • Do not carry out any welding on the mechanical structure after mounting the load cell
  • Avoid or reduce to a minimum level any mechanical constraints between the rigid structure and the weighing structure to avoid error in weighing and return to zero
  • In case of vibration or dynamic loads product the load cells with puffers / shock absorbers
  • Protect load cell from any dust accumulation with any appropriate means