WIKA A-AI-2 User manual

Attachable indicator, model A-AI-2 GB
F
14014118.01 • V2.0 • 03/2011
Attachable indicator, model A-AI-2
Operating instructions

2 WIKA operating instructions, model A-AI-2
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.
Prior to starting any work, read the operating instructions!
Keep for later use!

WIKA operating instructions, model A-AI-2 3
Contents
1
General information....................................................................................................................4
2 Safety...........................................................................................................................................5
2.1 Intended use..........................................................................................................................5
2.2 Personnel qualification...........................................................................................................6
2.3 Special hazards.....................................................................................................................7
2.4 Labelling / Safety marks ........................................................................................................7
3 Specifications.............................................................................................................................8
4 Design and function .................................................................................................................10
4.1 Description ..........................................................................................................................10
4.2 Scope of delivery.................................................................................................................11
5 Transport, packaging and storage ..........................................................................................11
5.1 Transport.............................................................................................................................11
5.2 Packaging............................................................................................................................11
5.3 Storage................................................................................................................................11
6 Commissoning, operation........................................................................................................11
6.1 Electrical connection............................................................................................................11
6.2 Configuration of the indicator...............................................................................................15
6.3 Switching points / alarm boundaries ....................................................................................18
6.4 Offset and slope adjustment................................................................................................21
6.5 Min-/max-value storage.......................................................................................................22
7 Maintenance and cleaning .......................................................................................................22
7.1 Maintenance........................................................................................................................22
7.2 Cleaning..............................................................................................................................22
8 Faults.........................................................................................................................................23
9 Dismounting, return and disposal...........................................................................................24
9.1 Demontage..........................................................................................................................24
9.2 Return..................................................................................................................................24
9.3 Disposal...............................................................................................................................24
10 Appendix...................................................................................................................................25
Declarations of conformity can be found online at www.wika.com.

1 General information
4 WIKA operating instructions, model A-AI-2
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.
 Observe the relevant local accident prevention regulations and general safety regulations for
the instrument's range of use.
 The operating instructions are part of the instrument and must be kept in the immediate vicinity
of the instrument and readily accessible to skilled personnel at any time.
 Skilled personnel must have carefully read and understood the operating instructions, prior to
beginning any work.
 The manufacturer's liability is void in the case of any damage caused by using the product
contrary to its intended use, non-compliance with these operating instructions, assignment of
insufficiently qualified skilled personnel or unauthorised modifications to the instrument.
 The general terms and conditions, contained in the sales documentation, shall apply.
 Subject to technical modifications.
 Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: AC 80.08
- Application consultant: Tel.: [phone]
Fax: [phone]
E-Mail: [e-mail]

2 Safety
WIKA operating instructions, model A-AI-2 5
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 trouble-
free 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
WARNING!
Before installation, commissioning and operation, ensure that the appropriate
instrument has been selected in terms of measuring range, design and specific
measuring conditions.
Non-observance can result in serious injury and/or damage to equipment.
Further important safety instructions can be found in the individual chapters of these
operating instructions.
2.1 Intended use
The attachable indicator A-AI-2 is used for attaching between a transmitter and the according angular
plug.
The instrument has been designed and built solely for the intended use described here, and may only
be used accordingly.
If the instrument is transported from a cold into a warm environment, the formation of condensation
may result in the instrument malfunctioning. Before putting it back into operation, wait for the
instrument temperature and the room temperature to equalise.
The manufacturer shall not be liable for claims of any type based on operation contrary to the intended
use.

2 Safety
6 WIKA operating instructions, model A-AI-2
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. Faultless operation and reliability in operation of the measuring device can only be assured if
the device is used within the climatic conditions specified in the chapter “Specifications“.
2. Always disconnect the device from its supply before opening it. Take care that nobody can
touch any of the unit‘s contacts after installing the device.
3. Standard regulations for operation and safety for electrical, light and heavy current equipment
have to be observed, with particular attention paid to the national safety regulations (e.g. VDE
0100).
4. When connecting the device to other devices (e.g. the PC) the interconnection has to be
designed most thoroughly, as internal connections in third-party devices (e.g. connection of
ground with protective earth) may lead to unwanted voltage potentials.
5. The device must be switched off and must be marked against using again, in case of obvious
malfunctions of the device which are e.g.:
 visible damage
 no prescripted working of the device
 storing the device under inappropriate conditions for longer time
When not sure, the device should be sent to the manufacturer for repairing or servicing.
6. In case of connecting lines longer than 30 m or in case of lines leaving the building an
additional suitable overvoltage protection shall be provided.
2.2 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient!
Improper handling can result in considerable injury and damage to equipment.
 The activities described in these operating instructions may only be carried out
by skilled personnel who have the qualifications described below.
 Keep unqualified personnel away from hazardous areas.
Skilled electrical personnel
Skilled electrical personnel are understood to be personnel who, based on their technical training,
knowledge of measurement and control technology and on their experience and knowledge of
country-specific regulations, current standards and directives, are capable of carrying out work on
electrical systems and independently recognizing and avoiding potential hazards.
The skilled electrical personnel have been specifically trained for the work environment they are
working in and know the relevant standards and regulations.
The skilled electrical personnel must comply with current legal accident prevention regulations.

2 Safety
WIKA operating instructions, model A-AI-2 7
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. short circuit from the mains
voltage to the output voltage) can result in life-threatening voltages at the
instrument!
WARNING!
Do NOT use this product as safety or emergency stopping device, or in any other
application where failure of the product could result in personal injury or material
damage.
Failure to comply with these instructions could result in death or serious injury and
material damage.
2.4 Labelling / Safety marks
Product label

3 Specifications
8 WIKA operating instructions, model A-AI-2
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
Dimensions
A-AI-2-1:
A-AI-2-S:

3 Specifications
WIKA operating instructions, model A-AI-2 9
Specifications
Display
■ Actual value LED, 4 -digit, character size 7 mm
■ Indication range -1999 ... +9999
■ Decimal point freely selectable
■ Accuracy ± 0.2 % of the measuring span ± 1 digit
■ Sampling rate 50 measurements/sec
■ Operation membrane keypad on the front or push-buttons behind the
cover of the case
Input
■ Input signal 4 … 20 mA (2-wire)
■ Max. permissible input 25 mA (40 mA short term)
■ Voltage drop DC 5.5 V
Switching output
■ One output Open Collector, galv. isolated,
max. DC 28 V, load max. 20 mA, connection via angular
connector, no short-circuit protection
■ {two outputs} Open Collector, galv. isolated,
max. DC 28 V, load max. 1 A, connection via female M8-
connector, no short-circuit protection
■ Reaction time ≤ 20 ms
■ switching point / hysteresise freely selectable
Equipment
■ Filter activatable, 3 filter stages
■ Min/Max value memory retrievable via keypad
■ Control characteristic ON/OFF (two-point control)
■ Alarm function Min-/Max alarm with settable time delay
Electrical connection to transmitter with 4 ... 20 mA and angular connector to DIN
43650, polarity-free mounting
CE-conformity
■ EMC directives 2004/108/EG, EN 61326 Emission (Group 1, Class B) and
Immunity (industrial locations)
Permissible
■ Operating temperature -25 ... +50 °C
■ Storage temperature -30 ... +85 °C
■ Humidity 0 ... 80 % relative humidity (no condensation)
Temperature effect on the indication 0.1% / 10 K
Case
■ Material ABS case, polycarbonate front panel, membrane keypad
■ Ingress protection IP 65 (when properly fitted)
■ Weight approx. 80 g
■ Dimensions in mm approx. 50.5 x 90 x 39.5 (L x B x T) incl. angular plug
■ Scope of delivery Attachable indicator, mounting screws, profile sealing,
operating instructions
For further specifications see WIKA data sheet AC 80.08 and the order documentation.

4 Design and function
10 WIKA operating instructions, model A-AI-2
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.
version
Order code
A-AI-2-1 A-AI-2-AA1TB-Z
A-AI-2-S A-AI-2-AASTB-Z
version A-AI-2-1 (standard)
In according to his type the device is
supporting an input for standard
signals 4…20 mA. The device
features one switching output (npn-
output), which can be configured as
2-point-controller or min/max alarm
output. The state of the switching
output is displayed with the LED left
beneath the LED-display.
version A-AI-2-S (optional)
The device features two switching
outputs (npn-output), which can be
configured as 2-point-controller, 3-
point-controller, 2-point-controller with
min./max.alarm or min./max. alarm
output (common or individual). The
state of the switching outputs is
displayed with 2 LED beneath the
LED-display. The left LED indicates
the state of the 1st output and the right
LED the state of the 2nd output.
When leaving our factory the A-AI-2 has been subjected to various inspection tests and is completely
calibrated.
Before the A-AI-2 can be used, it has to be configured for the customer’s application.

6 Commissoning, operation
WIKA operating instructions, model A-AI-2 11
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.g. change in installation site, sending for repair).
5.3 Storage
Permissible conditions at the place of storage:
 Storage temperature: -30…+85 °C
 Humidity: 0...80 % relative humidity (no condensation)
Avoid exposure to the following factors:
 Direct sunlight or proximity to hot objects
 Mechanical vibration, mechanical shock (putting it down hard)
 Soot, vapour, dust and corrosive gases
 Potentially explosive environments, flammable atmospheres
6 Commissoning, operation
6.1 Electrical connection
To connect the A-AI-2 it is simply plugged into an existing transmitter by means of a special adapter
for the cubic plug according to DIN 43650. An additional power supply is not necessary , because
device takes power directly from measuring current.
Electric connection and commissioning of the device must be carried out by trained and skilled
personnel.
Wrong connection may lead to destruction of the device, in which case we cannot assume any
warranty.
! Mind the maximum input current rating of 40mA under any circumstances!

6 Commissoning, operation
12 WIKA operating instructions, model A-AI-2
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-AI-
2 assignment.
Standard assignment of angular plug (A-AI-2-1)
contact number
wire colour
pin
jack
1 blue indicator + indicator -
2 red connected
3 black switching output + n.c.
4 yellow switching output - n.c.
n.c. = not connected
In the angular plug the male contact 2 is directly
connected 1:1 with the socket. The A-AI-2 is
located between the male contact 1 (+) and the
jack contact 1 (-). The male contacts 3 and 4 are
used for the switching output.
If the 'Signal/GND'-line in your transmitter is not assigned to contact 2 and if the '-Ub'-line is not
assigned to contact 1, please do not forget to adjust the A-AI-2 angle-type plug and the external angle-
type plug accordingly. To do so open the A-AI-2 angle-type plug and exchange the wire of contact 1
and contact 2 against the wire of the contact representing the connection in your transmitter.
Then exchange and rewire the two contacts in the angle-type plug of your connecting cable.

6 Commissoning, operation
WIKA operating instructions, model A-AI-2 13
Standard assignment of angular plug (A-AI-2-S)
cont
a
ct number
wire colour
pin
jack
1 blue indicator + indicator -
2 red connected
3 black connected
4 yellow 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 (-).
If the '
-Ub '-line is not assigned to contact 1, please do not forget to adjust the angle-type plug and the
external angle-type plug accordingly: To do so open the angle-type plug (refer to the “general
instructions for change ....”) and exchange the wire of contact 1 against the wire of the contact
representing the connection in your transmitter.
Then exchange and rewire the two contacts in the angle-type plug of your connecting cable.
General instruction for change of the angular plug assignment
Remove the coupling insert by means of a screw driver at the position indicated (arrow). Change the
assignment according the notes of the respective input signal.
Latch coupling insert in cover. You have a choice between 4 different orientations – each of them
spaced 90°. Put on angel-type plug and connect plugs using the long screw delivered (do not forget
seals).
Terminal assignment of the switching outputs
assignment of the
M8
-
connector
assignment of the connection
cable EBK401
description
1 brown switching output 1 -
2 white switching output 1 +
3 blue switching output 2 -
4 black switching output 2 +

6 Commissoning, operation
14 WIKA operating instructions, model A-AI-2
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.
When switching large capacitive loads a series resistor for current limitation needed, because of the
high turn-on-current of high capacitive loads. The same applies to incandescent lamps, whose turn-
on-current is also quite high due to their low cold resistance.
Connecting to current loop and switching of a relay (A-AI-2-1)
combined power supply for measurement section
and output section
separate power supply for measurement section and
output section
Connecting to current loop (A-AI-2-S)

6 Commissoning, operation
WIKA operating instructions, model A-AI-2 15
Switching of a relay (A-AI-2-S)
connection as „LowSide“ contactor connection as „HighSide“ contactor
6.2 Configuration of the indicator
Please note: 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!
Hint: The buttons 2 and 3 are featured with a ‘roll-function‘. When pressing the button
once the value will be raised (button 2) by one or lowered (button 3) by one. When
holding the button pressed for longer than 1 second the value starts counting up or
down, the counting speed will be raised after a short period of time.
6.2.1 Configuration of the input signal
 Turn the device on and wait until it completed its built-in segment test.
 Press button 2 for 1 second, in the device display appears ‚dP’ (decimal point).
 Select the desired decimal point place by pressing button 2 respective button 3.
 Validate the selected value by pressing button 1. The display shows ‚dP’ again.
 Press button 1 again, the display will show “di.Lo“ (Display Low = low display value).
 Use button 2 and button 3 to select the desired value the device should display when a 4mA
input signal is attached.
 Validate the selected value by pressing button 1. The display shows “di.Lo“ again.
 Press button 1 again, the display will show “di.Hi“ (Display High = high display value).
 Use button 2 and button 3 to select the desired value the device should display when a 20mA
is attached.
 Validate the selected value by pressing button 1. The display shows “di.Hi“ again.
 Press button 1 again. The display will show “Li“ (Limit = Measuring range limit).
 Use button 2 and button 3 to select the desired measuring range limit.

6 Commissoning, operation
16 WIKA operating instructions, model A-AI-2
display
measuring range input
notes
off
deactivated Exceeding of the measuring
range limit is tolerable as of the
measuring limit (p.r.t. hint).
on.Er
(on error) active, (displays an error) The meas. range limit is exactly bounded by the input signal.
When exceeding or undercutting
the input signal an error
message will be displayed.
on.rG
(on range) aktiv, (displays the selected limit) The meas. range limit is exactly bounded by the input signal.
When exceeding or undercutting
the input signal the device will
display the selected lower/upper
display value.
[e.g. humidity: when
undercutting or exceeding, the
device will display 0 % or 100
%]
Hint: When exceeding the measuring limit independently from the setting, the device will
always display an error message (“Err.1“ or “Err.2“).
The measuring limits are by 3.7 and 20.8 mA .
 Press button 1 to validate the selection, the display shows “Li“ again.
 When pressing button 1 again, the display will show “FiLt“ (Filter).
 Use button 2 and button 3 to select the desired filter behavior
display
description
0
filter deactivated
1
filter stage 1:
suppresses jumping display values caused be smallest changes
2
filter stage 2:
additional suppression of measuring peaks (causes delayed reaction of switching
output)
 Press button 1 to validate your value, the display shows “FiLt“ again.
The configuration of the device to the input signal is now completed. You now have to configure the
output of the device.
6.2.2 Selection of the output function
 When pressing button 1 again, the display will show “outP“. (Output)
 Use button 2 and button 3 (middle or right button) to select the desired output-function.

6 Commissoning, operation
WIKA operating instructions, model A-AI-2 17
A-AI-2-1:
description
to select as
output
output
(out)
see chapter
no output, device is
used as display
no
off --
2-point-controller
2P
switching function 6.3.1
Min/Max alarm
AL
min/max alarm, inverse 6.3.2
A-AI-2-S:
description
to select as
output
output
1 (out
1
)
output
2 (out
2
)
see chapter
no output, device is
used as display
no
off off --
2-point-controller
2P
switching
function off 6.3.1
Min-/Max-alarm,
common
AL
Min-/Max-alarm,
inverted off 6.3.2
3-point-controller
3P
switching
function 1 switching function 2 6.3.1
2-Punkt-Regler with
Min-/Max-alarm
2P.AL
switching
function 1 Min/Max alarm, inverted 6.3.1
Min-/Max-Alarm,
individual
AL.F2
Max alarm,
inverted Min alarm, inverted 6.3.2
 Press button 1 to validate the selected output function. The display shows “outP“ again.
For output function = no the configuration is now finished. Press button 1 to finish the adjustment and
to switch over to display the measuring value.
If the output function was changed here, the delay and preferred state of switching function and the
switching points / alarm-boundaries are to configured in following.
Hint: The settings described in the following depend on the selected output function.
Depending on this setting therefore it is possible that more than one point is not
present in the following.
 When pressing button 1 again, the device will display “1.dEL“ (delay = delay of switching
function 1).
 Use button 2 and button 3 to set the desired value for the switching-delay.
Hint: the selected value [0.01 ... 2.00] accords the switching delay in seconds.
 Press button 1 to validate the selection. The display shows “1.dEL“ again.
 When pressing button 1 again, the device will display “1.Err“ (error = preferred state of
switching function 1).
 Use button 2 and button 3 to set the desired initial state in case of an error.

6 Commissoning, operation
18 WIKA operating instructions, model A-AI-2
display
preferred state of switching
function
comment
off
Inactive in case of an error --
on
Active in case of an error --
 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).
The configuration of the output function is now completed. Depending on the selected output function
you have to make the settings for switching / alarm points. See description in chapter „switching
points/alarm-boundaries“ for further information.
Hint: The settings for the switching and alarm points can be made later in an extra menu
(see chapter 6.3)
6.3 Switching points / alarm boundaries
Please note: 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!
Hint: The buttons 2 and 3 are featured with a ‘roll-function‘. When pressing the button
once the value will be raised (button 2) by one or lowered (button 3) by one. When
holding the button pressed for longer than 1 second the value starts counting up or
down, the counting speed will be raised after a short period of time.
 When pressing button 1 for >2 seconds the menu to select the switching points and alarm-
boundaries will be called.
 Depending on the configuration you have made in the „output“ menu you will get different
display values. Please follow the specific chapter for further information.
6.3.1 2-point-controller (and 3-point-controller: A-AI-2-S)
This chapter describes how to configure the switching points as use the device for a 2-point- resp. 3-
point-controller. This instruction demands that you selected “2P“ resp. “3P“ as your desired output
function.
 Press button 1 (when not already done).
The device will display “1.on“ (turn-on-point of output 1)
 Use button 2 and button 3 to set the desired value, the device’s output should be turning on.
 Press button 1 to validate your selection. The display shows “1.on“ again.
 When pressing button 1 again, the device will display “1.off“. (turn-off-point out output 1)
 Use button 2 and button 3 to set the desired value, the device’s output 1 should be turning off.
 Press button 1 to validate your selection. The display shows “1.off“again.

6 Commissoning, operation
WIKA operating instructions, model A-AI-2 19
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.
A-AI-2-S: When selected '2-point-controller' you finished configuring your device. Press button
1 to switch over to display the measuring value.
When selected '3-point-controller' you have to make the following settings similar to
the settings you already made for output 1:
“2.on“ (turn-on-point of output 2) and
“2.off“ (turn-off-point out output 2)
Now you finished configuring the switching point adjustment of your device. Press button 1 to finish
the adjustment and to switch over to display the measuring value
6.3.2 Min-/Max-Alarm (A-AI-2-1)
Min-/Max-Alarm (common or individual) (A-AI-2-S)
This chapter describes how to configure the device‘s alarm boundaries for min-/max-alarm-monitoring.
This instruction demands that you selected “AL“ (or “AL.2F” for A-AI-2-S) as your desired output
function.
 Press button 1 (when not already done) , the device will display “AL.Hi“. (maximum alarm-
value)
 Use button 2 and button 3 to set the desired value, the device should turn on its maximum-
alarm.
 Press button 1 to validate your selection. The display shows “AL.Hi“ again.
 When pressing button 1 again, the device will display “AL.Lo“. (minimum alarm-value)
 Use button 2 and button 3 to set the desired value, the device should turn on its minimum-
alarm
 Press button 1 to validate your selection. The display shows “AL.Lo“ again.
 When pressing button 1 again, the device will display “A.dEL“. (delay of the alarm-function)
 Use button 2 and button 3 to set the desired delay of the alarm-function.
Note: the selected value [0 ... 9999] accords the alarm delay in seconds.
The device will turn on the alarm after minimum or maximum alarm value was active for the
delay-time you have set.
 Press button 1 to validate the delay time. The display shows “A.dEL“ again.
Example: You want to have a temperature alarm-monitoring of a greenhouse. The alarm
should start when the temperature rises above 50 °C or falls below 15 °C. Therefore
your settings will be 50 °C for the maximum alarm-value “AL.HI“ and 15 °C for the
minimum alarm-value “AL.Lo“.
=> The alarm will be starting after the temperature rises above 50 °C and stays
above 50 °C for the entered delay time or after it had been falling below 15 °C and
stays below 15 °C for the entered delay time.
Please note that the alarm-outputs are inverted! This means, that the output will be active when there
is no alarm!

6 Commissoning, operation
20 WIKA operating instructions, model A-AI-2
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).
The device will display “1.on“ (turn-on-point of output 1)
 Use button 2 and button 3 to set the desired value, the device’s output should be turning on.
 Press button 1 to validate your selection. The display shows “1.on“ again.
 When pressing button 1 again, the device will display “1.off“. (turn-off-point out output 1)
 Use button 2 and button 3 to set the desired value, the device’s output 1 should be turning off.
 Press button 1 to validate your selection. The display shows “1.off“again.
 When pressing button 1 again, the device will display “AL.Hi“. (maximum alarm-value)
 Use button 2 and button 3 to set the desired value, the device should turn on its maximum-
alarm.
 Press button 1 to validate your selection. The display shows “AL.Hi“ again.
 When pressing button 1 again, the device will display “AL.Lo“. (minimum alarm-value)
 Use button 2 and button 3 to set the desired value, the device should turn on its minimum-
alarm
 Press button 1 to validate your selection. The display shows “AL.Lo“ again.
 When pressing button 1 again, the device will display “A.dEL“. (delay of the alarm-function)
 Use button 2 and button 3 to set the desired delay of the alarm-function.
Note: the selected value [0 ... 9999] accords the alarm delay in seconds.
The device will turn on the alarm after minimum or maximum alarm value was active for the
delay-time you have set.
 Press button 1 to validate the delay time. The display shows “A.dEL“ again.
Please note that the alarm-outputs are inverted! This means, that the output will be active when there
is no alarm!
Now you finished configuring the switching point and the alarm adjustment of your device. Press
button 1 to finish the adjustment and to switch over to display the measuring value.