Operating instructions Attachable indicator, model A-AI-2 GB F 14014118.01 • V2.
GB Operating instructions, model A-AI-2 Page 1 - 28 © 2010 WIKA Alexander Wiegand SE & Co. KG All rights reserved. WIKA® is a registered trademark in various countries.
Contents 1 2 General information .................................................................................................................... 4 Safety........................................................................................................................................... 5 2.1 2.2 2.3 2.4 3 4 Specifications ............................................................................................................................. 8 Design and function ..........................
1 General information 1 General information The instrument described in the operating instructions has been designed and manufactured using state-of-the-art technology. All components are subject to stringent quality and environmental criteria during production. Our management systems are certified to ISO 9001 and ISO 14001. These operating instructions contain important information on handling the instrument. Working safely requires that all safety instructions and work instructions are observed.
2 Safety Explanation of symbols WARNING! ... indicates a potentially dangerous situation that can result in serious injury or death, if not avoided. Information ... points out useful tips, recommendations and information for efficient and troublefree operation. DANGER! ...identifies hazards caused by electric power. Should the safety instructions not be observed, there is a risk of serious or fatal injury.
2 Safety 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 operating instructions, are considered. 1.
2 Safety 2.3 Special hazards DANGER! Danger of death caused by electric current. Upon contact with live parts, there is a direct danger of death. Electrical instruments may only be installed and mounted by skilled electrical personnel. Operation using a defective power supply unit (e.g.
3 Specifications Explanation of symbols Before mounting and commissioning the instrument, ensure you read the operating instructions! CE, Communauté Européenne Instruments bearing this mark comply with the relevant European directives.
3 Specifications Specifications Display ■Actual value ■Indication range ■Decimal point ■Accuracy ■Sampling rate ■Operation Input ■Input signal ■Max.
4 Design and function 4 Design and function 4.1 Description The attachable indicator A-AI-2 is a microprocessor controlled displaying, monitoring and controlling device. In accordance to his type the device is supporting an input for standard signal 4…20 mA . The device is available in two different versions. In the given operating instructions both versions are described. If there is nothing other montioned, the declarations are for both versions.
6 Commissoning, operation 4.2 Scope of delivery The scope of delivery is: Attachable indicator Two mounting screws Seal Operating instructions Cross-check scope of delivery with delivery note. 5 Transport, packaging and storage 5.1 Transport Check instrument for any damage that may have been caused by transport. Obvious damage must be reported immediately. 5.2 Packaging Do not remove packaging until just before mounting. Keep the packaging as it will provide optimum protection during transport (e.
6 Commissoning, operation 6.1.1 Adjustment of the A-AI-2 connections The assignment of the angular plug is designed for the most commonly used assignments of the respective input signals. As this is not a standardized assignment, your transmitter assignment may not correspond to the A-AI2 assignment. Standard assignment of angular plug (A-AI-2-1) contact number wire colour 1 blue 2 red 3 black 4 yellow n.c. = not connected pin indicator + jack indicator connected switching output + n.c.
6 Commissoning, operation Standard assignment of angular plug (A-AI-2-S) contact number wire colour pin 1 blue indicator + 2 red 3 black 4 yellow jack indicator connected connected connected In the angle-type plug the male contacts 2, 3 and 4 are directly connected 1:1 with the socket. Device is located between the male contact 1 (+) and the jack contact 1 (-).
6 Commissoning, operation 6.1.2 Connection example Please take care that you must not exceed the limits of the voltage and of the maximum current of the switching outputs (not even for a short period of time). Please take extreme care when switching inductive loads (like coils or relays, etc.) because of their high voltage peaks, protective measures to limit these peaks have to be taken.
6 Commissoning, operation Switching of a relay (A-AI-2-S) connection as „LowSide“ contactor 6.2 Configuration of the indicator Please note: Hint: 6.2.1 connection as „HighSide“ contactor The storage of a configuration value will be done by switching to the next configuration value (via button 1). When configuration is active and no button is pressed for more than 60 seconds the configuration will be cancelled. Stored changes will not be lost! The buttons 2 and 3 are featured with a ‘roll-function‘.
6 Commissoning, operation Hint: display off measuring range input deactivated on.Er (on error) active, (displays an error) on.rG (on range) aktiv, (displays the selected limit) notes Exceeding of the measuring range limit is tolerable as of the measuring limit (p.r.t. hint). The meas. range limit is exactly bounded by the input signal. When exceeding or undercutting the input signal an error message will be displayed. The meas. range limit is exactly bounded by the input signal.
6 Commissoning, operation A-AI-2-1: description no output, device is used as display 2-point-controller Min/Max alarm to select as output no output (out) see chapter off -- 2P AL switching function min/max alarm, inverse 6.3.1 6.3.2 to select as output no output 1 (out 1) output 2 (out 2) see chapter off off -- 2P switching function Min-/Max-alarm, inverted switching function 1 switching function 1 Max alarm, inverted off 6.3.1 off 6.3.
6 Commissoning, operation display off on preferred state of switching function Inactive in case of an error Active in case of an error comment --- Press button 1 to validate the selection. The display shows “1.Err“ again. A-AI-2-S: In case you selected a 3-point-controlle you have to make the following settings similar to the settings you already made for output 1: “2.dEL“ (delay = delay of switching function 2) and “2.Err“ (error = preferred state of switching function 2).
6 Commissoning, operation Example: You want to control the temperature of a heating coil, with a hysteresis of +2°C, to 120°C. Therefore you will have to select the turn-on-point “1.on“ to 120°C and the turn-off-point to “122°C“. => When your heating coil temperature falls below 120°C it will be turned on. When the temperature rises above 122°C the heating coil will be turned off. Note: Depending on the inertia of your heating coil an overshooting of the temperature may be possible.
6 Commissoning, operation Now you finished configuring the alarm adjustment of your device. Press button 1 to finish the adjustment and to switch over to display the measuring value. 6.3.3 2-point-controller with min-/max-alarm (A-AI-2-S) This chapter describes how to configure the switching points as use the device for a 2-point-controller with min-/max-alarm. This instruction demands that you selected “2P.AL“ as your desired output function. Press button 1 (when not already done).
6 Commissoning, operation 6.4 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 / transmitter. Please note: Hint: The storage of a configuration value will be occur by switching to the next configuration value (via button 1). When configuration is active and no button is pressed for more than 60 seconds the configuration will be cancelled.
7 Maintenance and cleaning You have to set: offset = scale = 6.5 0.08 0.30 (= zero point-deviation) (= deviation/actual-slope=0.06/9.94=0.0030= 0.30%) Min-/max-value storage The device features a minimum/maximum-value storage. In this storage the highest and lowest performance data is saved. The storage is non-permanent so the saved values get lost in case of voltage drop.
8 Faults 8 Faults When detecting an operating state which is not permissible, the device will display an error code. The following error codes are defined: Fehler Err.1 Exceeding of the measuring range presumed cause Input signal too high Sensor shorted Err.2 values below measuring range Input signal zu low Current below 4 mA Err.3 display range has been exceeded incorrect scale Err.4 values below display range incorrect scale Err.
9 Dismounting, return and disposal 9 Dismounting, return and disposal WARNING! Residual media in dismounted instruments can result in a risk to persons, the environment and equipment. Take sufficient precautionary measures. 9.1 Demontage First disconnect power supply, than open the screw which connects angular plug, indicator and transmitter. Remove angular plug and indicator. After this attach the angular plug to transmitter and fasten the screw.
10 Appendix 10 Appendix WIKA operating instructions, model A-AI-2 25
10 Appendix 26 WIKA operating instructions, model A-AI-2
10 Appendix WIKA operating instructions, model A-AI-2 27
WIKA global WIKA subsidiaries worldwide can be found online at www.wika.com. WIKA Alexander Wiegand SE & Co. KG Alexander-Wiegand-Straße 30 63911 Klingenberg • Germany Tel. (+49) 9372/132-0 Fax (+49) 9372/132-406 E-Mail info@wika.de www.wika.
