Installation
12 - EN
VA Master FAM540
CI/FAM540-X1
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3.4.2 Analog indicator with transmitter with/without LCD display
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The electronic indicator with intelligent microprocessor converter is
designed for 2-wire operation. An optional LCD display enables users
to make local adjustments based on new measurement parameters.
For models with LCD display, ABB recommends that you use a bar
graph scale to avoid differences between a product scale and the
flowrate shown on the display.
G00453
Fig. 10
Product highlights
•
Display can be added later.
•
Electronic min/max device alarms or pulse output.
•
Configuration using HART communication via handheld terminal
or DSV401 (SMART VISION).
•
Measurement parameters can be made at any time (pressure
and temperature influence, density, units, etc.).
Design with LCD display:
•
flowrate and flow totalizer value display.
• Menu-guided
configuration.
•
Configuration using a magnet stick without opening the housing.
G00548
5
2
1
3
4
Fig. 11: Display with control buttons and magnet stick markings
1
Control button
◄
2
Control button
▲
3
Control button
▼
4
Control button
►
5
Position for magnet stick operation
Note:
When the housing cover is open, the EMC protection is suspended.
Replacing the electronic unit
The electronic unit can be replaced in the event of a malfunction.
Settings are updated immediately when the device is turned on.
LCD display
High contrast LCD display provides real-time flowrate and totalized
flow.
Use 4 control buttons on device or externally via magnet stick with
closed housing.
Enter information in the plain text dialog screen of the LCD display or
by digital communication using HART protocol.
Current output terminals 31 / 32
The auxiliary power is connected to these terminals (10 ... 46 V DC).
The 4 ... 20 mA output signal is also routed over these terminals.
In addition, terminals 31 / 32 support digital communication. An AC
signal is superimposed on the analog output signal.
Programmable output terminals 41 / 42
The programmable output can be assigned a variety of functions.
The following options can be selected via the "Prog Output" software:
1.
Pulse output
The scaled pulse output (passive) can be designed either as a
NAMUR contact (DIN
19234) or standard optocoupler
(U
H
= 16 ... 30 V DC). The internal resistance for an open contact
> 10 k
Ω
NAMUR. The pulse width can be configured between
5 ... 256 ms, but with max. 50% of the period. Max. frequency f
max
=
50 Hz.
2.
General Alarm
The error status for the meter and min/max alarms are collected and
output. Configurable as normally closed or normally open contacts.
3.
Max-Min alarm
Configurable as normally closed or normally open contacts.
4.
No function (factory default)
This output has no function.
The following limits apply:
Max. allowable switching current 15 mA
Min. output voltage U
S
2 V DC
U
S
= Voltage for auxiliary power source
Damping
Configurable from 1 ... 100 s, corresponds to 5
τ
.
Low flow cutoff
0 ... 5% for current and pulse output.
Function tests
Function tests can be used to test individual internal components. For
commissioning and inspection, the current output can be simulated to
match selected flowrates (manual process control). The binary output
can also be controlled for functional checks.
Current output for alarm
Set the current output in case of alarm using the menu item "I out at
Alarm" to 21 ... 23 mA (NAMUR NE43).
