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

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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Connections

Type7 pins Terminal 5.08 mm pitch 6 wires load cell options
LengthND
1Shield
2- Excitation
3+ Excitation
4+ Reference
5- Reference
6- Signal
7+ Signal
TypeTerminal block 9P pitch 5.08 Profibus
LengthND
8RS232 Tx
9RS232 Rx
10RS232 GND
11NC
12NC
13NC
14NC
15NC
16NC
Type8 pins Terminal 5.08 mm pitch Profibus
LengthND
17NC
18NC
19NC
20NC
21NC
22NC
23Power supply 24 Vdc
24Power supply 0 Vdc
Connections  Indicator RQ Profibus

MOUNTING OF THE LOAD CELL

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