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Keller EV-94 EB Manual For Connection And Operation

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5/2004
Manual for connection and operation of the EV-94 EB
page 1 of 28
Manual for connection and operation of
EV-94 EB
Version 2.0
KELLER AG für Druckmesstechnik
St. Gallerstr. 119
CH-8404 Winterthur
www.kellerdruck.com

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  • Page 1 5/2004 Manual for connection and operation of the EV-94 EB page 1 of 28 Manual for connection and operation of EV-94 EB Version 2.0 KELLER AG für Druckmesstechnik St. Gallerstr. 119 CH-8404 Winterthur www.kellerdruck.com...
  • Page 2 5/2004 Manual for connection and operation of the EV-94 EB page 2 of 28 I N D E X 1. SAFETY REGULATIONS..............................3 2. INTRODUCTION................................. 4 3. ELECTRIC CONNECTION............................... 5 3.1. Terminal assignment................................ 5 3.2. Connection data ................................5 3.3. Connecting an input signal .............................. 5 3.3.1.

  • Page 3: Safety Regulations

    5/2004 Manual for connection and operation of the EV-94 EB page 3 of 28 1. Safety regulations This device was designed and tested considering the Safety regulations for electronic measuring devices. Faultless operation and reliability in operation of the measuring device can only be assured if the General Safety Measures and the devices specific safety regulation mentioned in this users manual are considered.
  • Page 4 EASY -module. When leaving our factory the EV-94 EB has been subjected to various inspection tests and is completely calibrated. Before the EV-94 EB can be used, it has to be configured for the customer’s applica- tion.

  • Page 5: Electric Connection

    3. Electric connection Wiring and commissioning of the device must be carried out by skilled personnel only. In case of wrong wiring the EV-94 EB may be destroyed. We can not assume any warranty in case of wrong wiring of the device.

  • Page 6: Connecting A 4-20Ma Transmitter In 2-Wire-Technology

    5/2004 Manual for connection and operation of the EV-94 EB page 6 of 28 3.3.2. Connecting a 4-20mA transmitter in 2-wire-technology Supply Supply 9-28 VDC 9-28 VDC 4-20mA Transmitter 4-20mA Transmitter Supply for Transmitter Danger of overload when short circuiting the transmitter !

  • Page 7: Connecting A Frequency- Or Rotation-Signal

    5/2004 Manual for connection and operation of the EV-94 EB page 7 of 28 3.3.6. Connecting a frequency- or rotation-signal When measuring frequency or rotation three different input signals can be selected in the device’s con- figuration. There is the possibility of connecting an active signal (= TTL, ...), a passive sensor-signal with NPN (= NPN-output, push-button, relay, ...) or PNP (= a PNP output switching to +Ub, high-side push-button, ...).

  • Page 8: Connecting A Counter Signal

    5/2004 Manual for connection and operation of the EV-94 EB page 8 of 28 Supply Netzteil: 9-28 VDC 9-28 VDC Transducer Sig. Geber Sig. Supply for Transducer Connecting of a transducer (with individual power supply) Connecting of a transducer (without individual power supply) PNP output with external resistor wiring.

  • Page 9: Connecting Switching Outputs

    5/2004 Manual for connection and operation of the EV-94 EB page 9 of 28 3.4. Connecting switching outputs The device features two switching outputs, with three different operating modes for each switching out- put, which are: Low-Side: “GND-switching“ NPN output (open-collector) The switching output is connected to the negative rail of the supply voltage (connection 3 or 5) when active (switching output on).

  • Page 10: Connection With Configured Push-Pull-Switching Output

    Make sure to observe the following points: - When several EV-94 EB`s are connected to the same power supply unit it is highly recommended to isolate the sensors, measuring transducers etc. - When the sensors, measuring transducers etc. are electrically connected, and you can’t manage to isolate them, you should use separate electrically isolated power supply units for each devices.

  • Page 11: Configuration Of The Device

    5/2004 Manual for connection and operation of the EV-94 EB page 11 of 28 4. Configuration of the device Please note: When you are configuring the device and don’t press any button for more than 60 sec. the configuration of the device will be cancelled. The changes you made will not be saved and will be lost! Hint: The buttons 2 and 3 are featured with a ‘roll-function‘.

  • Page 12: Measuring Voltage And Current (0-50Mv, 0-1V, 0-2V, 0-10V, 0-20Ma, 4-20Ma)

    4.2. Measuring voltage and current (0-50mV, 0-1V, 0-2V, 0-10V, 0-20mA, 4-20mA) This chapter describes how you configure the EV-94 EB for measuring voltage- resp. current-signals from an external transmitter. This instruction demands that you selected “U“ or “I“ as your desired input type like it is explained in chapter 4.1.
  • Page 13 When pressing button 1 again, the display shows “outP“. (output) For configuring the outputs of the EV-94 EB, please follow the instructions given in chapter 4.8. 4.3. Measuring temperature (Pt100, Pt1000 RTD probes and thermocouple type J, K, N, S or T) This chapter describes how to configure the device for temperature measuring with the help of external plati- num RTD probes or thermocouple probes.

  • Page 14: Measuring Of Frequency (Ttl, Switching-Contact)

    When pressing button 1 again, the display shows “outP“. (output) For configuring the outputs of the EV-94 EB, please follow the instructions shown in chapter 4.8. For setting the offset and for setting the slope-adjustment, please follow the instructions given in chapter 6.

  • Page 15: Measuring Of Rotation Speed (Ttl, Switching-Contact)

    When pressing button 1 again, the display will show “outP“. (Output) For configuring the outputs of the EV-94 EB, please follow the instructions shown in chapter 4.8. 4.5. Measuring of rotation speed (TTL, switching-contact) This chapter describes how to configure the device for measuring rotation speed.

  • Page 16: Up-/Downwards Counter (Ttl, Switching-Contact)

    When pressing button 1 again, the display will show “outP“. (Output) For configuring the outputs of the EV-94 EB, please follow the instructions shown in chapter 4.8. 4.6. Up-/Downwards counter (TTL, switching-contact) The upwards counter starts counting upwards from 0 according to its settings.
  • Page 17 GIA20EB. But when setting a pre-scaling factor of 1000 only every 1000th pulse is used for further process- ing. So you only got a value 5000 which won’t exceed the limit of the EV-94 EB Press button 1 to validate your selection. The display shows “diu“ again.

  • Page 18: Interface Mode

    When pressing button 1 again, the display will show “outP“. (Output) For configuring the outputs of the EV-94 EB, please follow the instructions shown in chapter 4.8. 4.7. Interface mode When the device is in the interface mode it won’t make any measurements by itself. The value shown in the device’s display is sent via serial interface.
  • Page 19 5/2004 Manual for connection and operation of the EV-94 EB page 19 of 28 When pressing button 1 again, the device will display “1.dEL“ (delay of output 1). Use button 2 and button 3 to set the desired value [in sec.] for the switching-delay of output 1.
  • Page 20 5/2004 Manual for connection and operation of the EV-94 EB page 20 of 28 5. Switchpoints resp. alarm-boundaries Please note: The settings of the switchpoints will be cancelled, when no button was pressed for more than 60 sec. changes you may have made already won‘t be saved and will be lost!
  • Page 21 5/2004 Manual for connection and operation of the EV-94 EB page 21 of 28 Press button 1 The device will be displaying “2.on“ (turn-on-point of output 2). (when not already done). Use button 2 and button 3 to set the desired value, the device’s output 2 should be turning on.
  • Page 22 5/2004 Manual for connection and operation of the EV-94 EB page 22 of 28 5.3. Minimum/maximum-alarm (individual or common) This chapter describes how to configure the device‘s alarm boundaries for min-/max-alarm-monitoring. This instruction demands that you selected “AL.F1“ resp. “AL.F2“ as your desired output function like it is explained in chapter 4.8.

  • Page 23: Offset- And Slope-Adjustment

    5/2004 Manual for connection and operation of the EV-94 EB page 23 of 28 6. Offset- and slope-adjustment The offset and slope-adjustment function can be used for compensating the tolerance of the used sensor, resp. for vernier adjustment of the used transducer resp. transmitter.

  • Page 24: Min-/Max-Value Storage

    5/2004 Manual for connection and operation of the EV-94 EB page 24 of 28 7. Min-/max-value storage: The device features a minimum/maximum-value storage. In this storage the highest resp. lowest performance data is saved. Calling of the minimum-value press button 3 shortly the device will display “Lo“...
  • Page 25 5/2004 Manual for connection and operation of the EV-94 EB page 25 of 28 Err.3: Display range has been exceeded Indicates that the valid display range (9999 digit) of the device has been exceeded. Possible causes: - Incorrect scale. - Counter overflow.

  • Page 26: Specification

    5/2004 Manual for connection and operation of the EV-94 EB page 26 of 28 10. Specification Absolute maximum ratings: Performance data Limit values Connection Notes between min. max. min. max. Supply voltage 4 and 5 28 V 30 V 30V, not short circuit protected I<1A...
  • Page 27 5/2004 Manual for connection and operation of the EV-94 EB page 27 of 28 Display range: (voltage-, current and frequency-measurement) -1999 ... 9999 Digit, initial value, terminal value and decimal point position arbitrary. Recommended range: < 2000 Digit Accuracy: (at nominal temperature) Standard-signals: <...
  • Page 28 Short Form Manual EV-94 EB This short form manual allows a quick basic configuration. For more details please refer to the "Manual for connection and operation of the EV-94 B". Note: If no key is pressed for 30 seconds, the configuration must be reset!

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