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Operating Manual EMGZ308
Analog Tension Measuring Amplifier
Version 2.03 04/08 st
This operation manual is also available in German.
Please contact your local representative.
Diese Bedienungsanleitung ist auch in Deutsch erhältlich.
Bitte kontaktieren Sie die Vertretung im zuständigen Land.
© by FMS Force Measuring Systems AG, CH-8154 Oberglatt – All rights reserved.
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Summary of Contents for FMS EMGZ308
- Page 1 This operation manual is also available in German. Please contact your local representative. Diese Bedienungsanleitung ist auch in Deutsch erhältlich. Bitte kontaktieren Sie die Vertretung im zuständigen Land. © by FMS Force Measuring Systems AG, CH-8154 Oberglatt – All rights reserved.
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Page 2: Safety Instructions
Operating manual EMGZ308 1 Safety Instructions 1.1 Description conditions a) High danger of health injury or loss of life Danger This symbol refers to high risk for persons to get health injury or loss life. It has to be followed strictly. -
Page 3: Table Of Contents
Operating manual EMGZ308 Table of contents Safety Instructions ..................2 Description conditions List of safety instructions Definitions ....................4 System components ................... 4 System description ..................5 Functional description Force sensors Measuring amplifier EMGZ308 Block diagram Dimensions ....................7 Installation and wiring................8... -
Page 4: Definitions
Strain gauge: Electronic component that will change its resistance while its length has changed. Strain gauges are used in the FMS force sensors for acquisition of the feedback value. 3 System components The EMGZ308 consists of the following components (refer also to fig. 1): Force sensors •... -
Page 5: System Description
Due to the wheatstone wiring of the strain gauges, the measured value is according also to the power supply. So, the force sensors are supplied from the EMGZ308 by a very accurate power supply. -
Page 6: Block Diagram
Operating manual EMGZ308 Fixed setting of gain and offset Fixed setting is used when maximum thermal stability and vibration-proof conditions are needed. The signal is pre-amplified with a fixed value and has to be evaluated digitally (for ex. by a PLC), so that offset and gain can be calculated. -
Page 7: Dimensions
Operating manual EMGZ308 5 Dimensions CHANNEL 1 CHANNEL 2 EMGZ308 SERIES 8 x M16 x 1.5 fig. 3 E308013e... -
Page 8: Installation And Wiring
Operating manual EMGZ308 6 Installation and wiring Caution Proper function of the Tension Measuring Amplifier is only guaranteed with the recommended application of the components. In case of other arrangement, heavy malfunction can be the result. Therefore, the installation instructions on the following pages must be followed strictly. -
Page 9: Mounting The Force Sensors
Operating manual EMGZ308 6.2 Mounting the force sensors Mounting of the force sensors is done referring to the FMS Installation manual which is delivered together with the force sensors. Wiring to the terminals of the electronic unit is done according to wiring diagram (fig. 5). -
Page 10: Setting Into Operation
Operating manual EMGZ308 7 Setting into operation 7.1 View of the setting elements fig. 6: Setting elements E308008e 7.2 Configuring gain and offset Gain and offset are configured by jumpers. The settings can be made individually for each channel. Gain and offset with infinite setting... -
Page 11: Configuring The Output
4...20mA) which are active simultaneously. The signal of the current output is configured as follows: Current output 0...20mA The jumpers have to be set according to fig. 9. This is the standard FMS factory setting. fig. 9: Jumper setting for current output 0...20mA E308010c Current output 4...20mA... -
Page 12: Configuring The Lowpass Filter
Operating manual EMGZ308 7.4 Configuring the lowpass filter The measuring amplifier provides 2 lowpass filters per channel. They are used to eliminate faulty signal variations which may be caused by unbalanced rollers, vibrations of the machine, or equivalent. Lowpass U... -
Page 13: Calibrating The Measuring Amplifier
Operating manual EMGZ308 7.5 Calibrating the measuring amplifier Proceed the calibration for each channel as follows: • Connect gauge to the tension or current output. • Connect the first force sensor. • Check if a positive output signal is appearing when loading the sensor in measuring direction. -
Page 14: Trouble Shooting
Operating manual EMGZ308 8 Trouble shooting Error Cause Corrective action Offset setting is bad Re-adjust offset (refer to „7.5 Calibrating the Output shows signal > 0 although material has no measuring amplifier“) tension Current output is configured Change jumper setting if required for 4...20mA... -
Page 15: Technical Data
Operating manual EMGZ308 9 Technical Data Sensor excitation 5VDC ±20ppm/K max. 30mA [±11ppm/°F] Gain factor range fixed: 1111; variable: 500...5000 Offset range fixed: 0mV; variable: ±9mV Temperature drift offset fixed: < 20ppm/K [11ppm/°F]; variable: ca. 50ppm/K [28ppm/°F] Linearity error < 0.1% Tension output ±10V min. - Page 16 Operating manual EMGZ308 FMS Force Measuring Systems AG FMS USA, Inc. FMS (UK) Aspstrasse 6 925 East Rand Road Suite 207 Highfield, Atch Lench Road 8154 Oberglatt (Switzerland) Arlington Heights, IL 60004 (USA) Church Lench Tel. 0041 44 852 80 80 Tel.
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