FISCHER EA14M Operating Manual
d e velop i n g s o l u t i o n s
*09005881* BA_EN_EA14M_LCD Rev.A 09/16
*09005881*
Operating manual
EA14M
Pressure indicator
with colour-changing LCD
Table of Contents
1 Safety guidelines
2 Application purpose
3 Product and functional description
4 Installation and assembly
5 Commissioning
6 Maintenance
7 Transportation
8 Service
9 Accessories
10 Waste Disposal
11 Technical Data
12 Dimensional drawings
13 Order Codes
14 Manufacturer's Declarations and Certificates
1 Safety guidelines
1.1 General
This operating manual contains instructions fundamental to the installation,
operation and maintenance of the de-
vice that must be observed unconditionally. It must be read by the assembler, operator
and the specialized personnel in charge of the device before it is installed and put into operation.
This operating manual is an integral part of the
product and therefore needs to be kept close to the
instrument in a place that is accessible at all times
to the responsible personnel.
The following sections, in particular instructions
about the assembly, commissioning and maintenance, contain important information, nonobservance of which could pose a threat to humans,
animals, the environment and property.
1.1 Personnel Qualification
The device may only be installed and commissioned by specialized personnel familiar with the installation, commissioning and operation of this
product.
Specialized personnel are persons who can assess
the work they have been assigned and recognize
potential dangers by virtue of their specialized train-
ing, their skills and experience and their knowledge
of the pertinent standards.
1.2 Risks due to Non-Observance of Safety Instructions
Non-observance of these safety instructions, the intended use of the device or the limit values given in
the technical specifications can be hazardous or
cause harm to persons, the environment or the
plant itself.
The supplier of the equipment will not be liable for
damage claims if this should happen.
1.3 Safety Instructions for the Operating Company and the Operator
The safety instructions governing correct operation
of the instrument must be observed. The operating
company must make them available to the installation, maintenance, inspection and operating personnel.
Dangers arising from electrical components, energy
discharged by the medium, escaping medium and
incorrect installation of the device must be eliminated. See the information in the applicable national
and international regulations.
In Germany these are the DIN EN, UVV
regulations, specific industrial guidelines
such as DVGW, Ex, GL, etc., the VDE-
WARNING!
… indicates a potentially dangerous
situation, non-observance of which
could endanger persons, animals, the
environment or objects.
INFORMATION!
… highlights important information for
efficient and smooth operation.
TIP!
… indicates recommendations that are
not specifically necessary in certain
situations but which could be useful.
1
Transmitter
with input signal
2
Signal conversion
3
Micro-controller
4
Switch output
5
Keyboard
6
Display
7
Analogue output
regulations and the regulations of the local energy
supply companies.
1.4 Unauthorised Modification
Modifications of or other technical alterations to the
instrument by the customer are not permitted. This
also applies to replacement parts. Any modifications / alterations required must be carried out by
Fischer Mess- und Regeltechnik GmbH only.
1.5 Inadmissible Modes of Operation
The operational safety of this instrument can only
be guaranteed if it is used as intended. The instrument model must be suitable for the medium used
in the system. The limit values given in the technical
data may not be exceeded.
1.6 Safe working practices for maintenance and installation work
The safety instructions given in this operating manual, any nationally applicable regulations on accident prevention and any of the operating company's
internal work, operating and safety guidelines must
be observed.
2 Application purpose
The EA14A can be used as a transmitter and display unit for measuring pressure. The device analyses a signal (current or voltage) that originates
from an external transmitter.
3 Product and functional description
3.1 Function diagram
The operating company is responsible for ensuring
that all required maintenance, inspection and installation work is carried out by qualified specialized
personnel.
1.7 Explanation of symbols
3.2 Design and mode of operation
This device is based on an electronic analysis
switch that analyses the measuring signal of an external transmitter. The main task is to display and
analyse the measured signal. Optionally, an output
signal can be provided that is proportional to the input signal.
The external transmitter is connected to the analysis circuit using a flexible cable with plug connectors which also acts as the power supply. Only the
supplied transmitters may be connected.
4 Installation and assembly
The device is designed for installation onto flat assembly plates. For screw connection to the assembly plate, the device features four assembly bores
on its back, which can be used for Ø 3.5 mm tapping screws. Optionally, the device can be delivered
with a wall-mounting plate.
2 | 16 Page
The enclosure protection type IP 65 is only guaranteed, if a suitable power supply cable is used.
+ Ub
Power supply to the unit
- Ub
Power supply to the unit
+ Out
Analogue output
- Out
Analogue output
FE
Functional earth (low-external voltage earth)
SP1
Switching output 1
SP2
Switching output 2
+ UT
Supply ext. Transmitter (output)
- UT
Supply ext. Transmitter (output)
+ Sig
T
Analogue input fir external transmitter signal
- Sig
T
Analogue input fir external transmitter signal
n.c.
not connected
Connector 1
Pin
Signal name
Cable colour
1
+Ub brown
2
- Out white
3
- Ub blue
4
+ Out
black
5
FE green/yellow
A
Coding
B
Internal bridge Pin 2/3
Connector 2
Pin
Signal name
Cable colour
1
SP1 brown
2
SP2 white
3
SP2 blue
4
SP1 black
A Coding
Connector 3
Pin
Signal name
Cable colour
1
+ UT
+ SigT
brown
2
- UT
- SigT
blue
3
n.c. black
4
FE green/yellow
Connector 3
Pin
Signal name
Cable colour
1 + SigT
brown
2
- UT
- SigT
blue
3
+ UT black
4
FE green/yellow
Connector 3
Pin
Signal name
Cable colour
1
+ UT
+ SigT
brown
2
n.c. white
3
n.c. blue 4 - UT
- SigT
black
5
FE green/yellow
A
Coding
Connector 3
Pin
Signal name
Cable colour
1
+ UT brown
2 - SigT
white
3
- UT blue
4 + SigT
black
5
FE green/yellow
A
Coding
B
Internal bridge Pin 2/3
If the device is intended for outdoor use, we recommend permanently protecting the membrane
keypad against UV radiation and using a suitable
enclosure or at least the erection of a sufficiently
dimensioned canopy as a protection measure
against constant rain or snow.
4.1 Process connection
Please note the installation instructions and safety
information relating to the external transmitter.
4.2 Electrical connections
• By authorized and qualified specialized person-
nel only.
• When connecting the device, the relevant na-
tional and international electro-technical rules
must be observed.
• Disconnect the system from the mains, before
electrically connecting the device.
• Switch the consumer-adapted fuses.
• The following signals apply to the signals:
4.2.2 Connection of the switching outputs
4.2.3 Connection of the external transmitter
The external transmitter is connected with a 2 or 3line connection depending on the model.
2L connection standardised plug
4.2.1 Supply and output signal connection
Pin 2 and Pin 4 on units without an output signal
have no function (n.c.).
3L connection standardised plug
2L connection M12 Built-in socket
3L connection M12 Built-in socket
3 | 16 Page
1
LC display with back lighting
2
Measurement display 4…6 digits
3
Status display of the switch points
4
Unit 5 Bar chart display
6
Keyboard
1
1
Menu downwards, reduce value
2
Call up menu, save value
3
Menu upwards, increase value
5 Commissioning
All electrical supply, operating and measuring lines,
and the pressure connections must have been correctly installed before commissioning. All supply
lines are arranged so that there are no mechanical
forces acting on the device.
5.1 Configuration
During commissioning there are a number of setting
options that allow the device to be adapted to the
measuring point and measuring task. To facilitate
the input, the individual parameters are placed into
groups in so-called menu levels.
Depending on the device model1 some menu items
are not available. For instance, no switch points can
be set on a device without contacts.
All the device settings can be made
easily on the PC using the transmitter
PC interface. Here, the parameters are
directly visible and accessible. Also, it is
possible to load and save the entire configuration; it
can also be printed out for checking (see accessories).
presentation (see Parameter MB decimal place in
section 5.3.5).).
The unit is shown on the right of the display. If the
device is equipped with contacts, a closed contact
is always symbolised by an inverted text "SP1" or
"SP2".
Various colours can be selected for the back lighting. Depending on the measured value, the colour
of the back lighting can be automatically changed.
This can be used e.g. to depict good/poor differences. The back lighting can also be deactivated.
The measured value can also be shown in a bar
chart. The measured value is also shown in smaller
pictures as a number.
During the programming, the menu items and the
associated parameters are shown on the display.
The device continues to function whilst the parameters are being set; apart from one exception, the
changes come into effect instantly. The exception
here is a change of switching times - here the previously valid time must have run down.
5.2.2 Keyboard
5.2 Control Elements
5.2.1 LC display
The individual menu items and parameters can be
displayed using the buttons þ and ÿ. The respective menu item is selected or the parameters for
making changes are called up via the button û.
If a parameter can be changed, the display flashes.
The change is made via the buttons þ and ÿ. The
value is saved with the button û.
To leave a menu level or the entire menu, select
"Quit" and press û.
In normal mode, the current measured value is
shown on a 4-digit LC display. To show very large
values, it is possible to switch to a 5 or 6-digit
with regard to the transmitter signal, voltage output, current
output, etc.
4 | 16 Page
Example: Setting the switch points
In normal mode, press the button û to enter the
menu. Menu Level Switch points appears in the
display; to change the switch points press the û
button again and the parameter Switch point 1 on
is shown.
The device jumps to the input:
SP1 On
SP1 Off
SP1 Delay
SP1 Function
SP2 On
SP2 Off
SP2 Delay
SP2 Function
• The parameter is stated in the first line.
• The value that is to be changed is shown in the
second line, the display flashes.
• The input limits are displayed in the 3rd line (if
there is one).
The required value is set with the buttons þ and ÿ
and then confirmed with û.
5.3 Menu
Description Parameter name
Menu Level Switch points
Switch point 1:
Switch point 1 On ..................... ............ SP1 On
Switch point 1 Off ..................... ............ SP1 Off
Switch point 1 Delay ................. ............ SP1 Delay
Switch point 1 Function ............ ............ SP1 Function
Switch point 2:
Switch point 2 On ..................... ............ SP2 On
Switch point 2 Off ..................... ............ SP2 Off
Switch point 2 Delay ................. ............ SP2 Delay
Switch point 2 Function ............ ............ SP2 Function
Menu Level Input
Damping ................................... ............ Damping
Offset correction ....................... ............ Offset correction
Zero-point window .................... ............ Zero-point window
Menu Level Measuring
Measuring range start .............. ............ Meas. range Start
Measuring range end ............... ............ Meas. range. End
Measuring range unit ................ ............ Unit
Measuring range limit ............... ............ Limit
Menu Level Output
min. output .............................. ............ min. Output
max. output .............................. ............ max. Output
Error signal ............................... ............ Error signal
Menu Level Function
The menu will change depending on the entered value, linear,
square rooted or table:
(a) Value = linear:
Function: ............................ ............ linear
(b) Value = square rooted
Function: ........................... ............ Square rooted
Measuring range decimal places ..... Decimal places MB
Start of measuring range .... ............ MB-start
End of measuring range ..... ............ MB-end
Measuring range unit ......... ............ Unit MB
(c) Value= Table
Function: ........................... ............ Table
Measuring range decimal places ..... Decimal places MB
Start of measuring range .... ............ MB-start
End of measuring range ..... ............ MB-end
Measuring range unit ......... ............ Unit MB
Number of pair(s) ............... ............ Number of pairs
Depending on the input followed by :
Pair 1 ........................... ............ Value pair 1
Pair 2 ........................... ............ Value pair 2
Pair 3 ........................... ............ Value pair 3
•
•
Pair n ........................... ............ Value pair n
Menu Level Display
Colour ....................................... ........... Colour
(a) The menu changes for the value Auto1:
Red-green switchover ......... ........... Red-green switcho.
Green-red switchover ......... ........... Green-red switcho.
Hysteresis........................... ........... Hysteresis
Delay ........................... ........... Delay
Colour ........................... ........... Colour
(a) The menu changes for the value Auto2:
Red-yellow switchover ........ ........... Red-yellow switcho.
Yellow-green switchover ..... ........... Yellow-green switcho.
Green-yellow switchover ..... ........... Green-yellow switcho.
Yellow-red switchover ......... ........... Yellow-red switcho.
Hysteresis........................... ........... Hysteresis
Delay ........................... ........... Delay
Colour ........................... ........... Colour
Lighting time ............................. ........... Lighting
Contrast .................................... ........... Contrast
Bar chart ................................... ........... Bar chart
Menu Level System
Language switchover ................ ........... Language
Device information .................... ........... Software Info
Device information .................... ........... Config Info
Operating time/switch cycles ..... ........... Statistics
Access control .......................... ........... Password
Data backup ............................. ........... Load config.
Data backup ............................. ........... Save config.
5.3.1 Menu Level Switch points
The two switching outputs are configured by four
parameters respectively.
For the switch point 1 these are
Accordingly for switch point 2:
SP1 On defines the activation point, SP1 Off the
deactivation point of switch output 1. The values are
shown in the valid unit and set accordingly. The
values are shown in the valid unit and set accordingly.
Together, the two parameters determine the switch
function of switch output 1:
If SP1 Off < SP1 ON, the output switches on, if the
measured value exceeds SP1 ON. It is only
switched off again if the measured value SP1 Off is
undercut (hysteresis function).
If SP1 On = SP1 Off, the output switches on if the
measured value exceeds SP1 On and off if the
measured value undercuts SP1 Off.
If SP1 Off > SP1 ON, the output switches on, if SP1
On < Measured value < SP1 Off applies (window
function).
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