Meters 124.1 for Speed, Ratio, Difference Versions C / D 124.100 for display onlyMeters 124.1 for Speed, Ratio, Difference Versions C / D 124.100 for display only - Braun Industrie-Elektronik - #1

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Speed and Frequency Seite 1 von 1 Braun GmbH ISO 9001 certified Quality Post-Office Box 1106 • D-71301 Waiblingen Phone: +49(0) 7151 / 95 62-30 • Fax: +49(0) 7151 / 9562-50 • eMail: info@braun-tacho.de Internet: www.braun-tacho.de Meters 124.1 for Speed, Ratio, Difference Versions C / D 124.100 for display only Application Characteristics · 2 measuring channels . Display selection by key. · Facility to compute ratio, difference, sum of both channels. · Reading all process variables w hich are transmitted as a series of pulses or as AC-voltage. Compatible with all our speed sensors, and many other transmitters for speed and flow. · Preferred in power plants, with paper and textile machines, or test installations, for their high accuracy and their facility to read ratio and difference, in comparison with their second input. Also, as part of larger systems, for remote display. For applications requiring further facilities, we recommend our extended versions (see separate sheets): with setpoint alarms and analog output: series 124.112 with PROFIBUS communication: series 124.1S4 with Ex-proof enclosure: series D124Ex9 Measuring Principle 2 measuring channels , M and B, operate in parallel. Both use the advantageous frequency measuring principle, distinguished by pulse distance evaluation, automatically extended over a programmable period of time. The ideal combination of tracking speed and average, as appropriate for the application. The unit precisely regards the relationship between the process quantity (speed) and the transmitted frequency, by digital (scaling), individually for both channels. Thus, any required reading can be established. Measuring accuracy ± 0.01 % ± 1 in last significant digit. Minimum time extension for every measuring period programmable 30 millisec up to 10 seconds. Composite Quantities With the measured results from both channels M and B, the unit continuously computes their ratio, difference, and sum. Thereby, a total of 6 different quantities is held at the user’s disposal: Variable M Variable B Ratio M ÷ B Difference M – B Sum M + B Percentage difference (M – B) ÷ B. Any two of these can be selected to be alternatively displayed, switched by key or external control. LED lights indicate the actually valid display selection. Sensor Signal Inputs Both channels M and B provide two input paths, accepting all our sensors. Both are isolated from power supply, and have common zero. The high level path responds with on/off >7/<4 volts. Max. signal 150 v. Impedance 100 k. Frequency 0-100 kHz. The high sensitivity path responds to > 50 millivoltsRMS, max 35 v DC may be superimposed. Max. signal 100 v. Impedance 50 k. Frequency 1-50 kHz. Sensor supply 12 volts/60 ma (common to both channels), and 2x8 volts via 1k for 2leads NAMUR types. Design Two design versions are available, w ith identical functional characteristics. Panel mount version ( C ): Front frame 96x48 mm, protection grade IP50. Plastics enclosure, depth 125 mm, mounting by supplied brackets. Panel thickness up to 10 mm, opening 92x45 mm. Weight approx. 200 grams. Rear side terminals for wire up to 2.5 mm2, protection grade IP20. Snap-on-track version ( D ): For DIN rail 35 mm. Plastics enclosure, protection grade IP50. Length 100 mm, width 75 mm, height 111 mm. Weight approx. 200 grams. Terminals for wire gage up to 2.5 mm2, protection grade IP20. Display 5 digit (resp. 4 digits and minus sign), with bright red figures, 14 mm high. Decimals and blank zeroes can be programmed. The display update sequence may be increased beyond the minimum measuring period, for easier readability. During the programming phase, the display reads the step number and its corresponding parameter. HOLD function An external control signal, if active, holds the display at the most recent measurement. MAX/MIN memory Maximum and minimum measurements are memorized to be called to the display by keys. Another key initiates a new memorizing period, cancelling previous values. Data Interface (Option) RS232 (for PROFIBUS see version 124.1S4) Transmitting measurements on demand. No configuration of parameters via Interface. Power Supply Options 18…40 volts AC/DC (suffix U1 to model No) 85..265 volts AC/DC (suffix U2 to model No) Power consumption approx 5 VA. Operating Conditions Ambient temperature 0°C … +50 °C (30 …95 °F) Humidity max 70%, without condensation. Insulation Category I Complying Standards EMI according EN 610000-6.2, ..-6.4 Safety EN 61010-1 Ordering Information _ 124.100 _ __ Design Version Power Supply C = Panel Mount U1 = 18…40 v D = Snap-on-track U2 = 85..265 v Data Interface 0 = none 2 = RS 232 Panel Mount Version ( C ) Snap-on-track Version ( D )