Electrical Connection; Analog Display With / Without Limit Signal Transmitter - ABB VA Master FAM540 Inbetriebnahmeanleitung

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3.4

Electrical connection

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A magnet in the float translates the height of the float as a meas-
urement for the flow to the decouple-proof magnet follower system of
the flowmeter, which is directly connected to the indicator pointer.
For analog indicators, the flowrate is shown on the scale. For
displays with intelligent dual wire converter, the indicator position is
measured directly at the axis. A standard eddy-current brake is used
to dampen indicator vibrations and ensure outstanding readability.
The indicator/converter unit is attached to the flowmeter with two
screws in a reproducible manner. To facilitate installation, the
indicator can be removed. A model plate on the flowmeter bracket
allows you to assign the meter unique identifier.
3.4.1 Analog display with / without limit signal
transmitter
The mechanical analog indicators are available with or without limit
signal transmitter. The limit signal transmitters are housed on an
alarm module that can be subsequently added. It is available as
single (min. or max. alarm) or dual alarm.
Fig. 6
Product highlights
• Limit signal transmitter can be added via compact slide-in
module.
• The position of the limit signal settings is visible externally.
• Limit signals can be set on the scale.
• Decouple-proof and hysteresis-free magnet follower system.
• Meter conforms to NAMUR Recommendations NE43, NE53,
NE107
• Install and deinstall the secondary portion on the primary
flowmeter without opening the indicator housing.
• Reproducibility ± 0.25 % of scale end value.
Fig. 7: Alarm module
CI/FAM540-X1
Fig. 8: Standard eddy-current brake
Version with limit signal transmitter
The alarm signal is triggered when the contact disc enters the slot
initiator (contact opens). The alarms can be shifted without
repositioning or removing the scale and are visible from the front.
Operating mode
Reproducibility
Nominal voltage
Operating voltage
Switching frequency, max
An isolated switch amplifier is required for limit signal
transmitters:
Type
KFD2-SR2-Ex1.W
No. D163A011U03
KFA5-SR2-Ex1.W
No. D163A011U01
KFA6-SR2-Ex1.W
No. D163A011U02
G00452
KFD5-SR2-Ex2.W
No. D163A011U06
KFA5-SR2-Ex2.W
No. D163A011U04
KFA6-SR2-Ex2.W
No. D163A011U05
The isolated switch amplifiers from Pepperl & Fuchs are provided as
examples; other amplifiers can also be used.
Terminal connection diagram
Functional ground
Fig. 9
1 Max. limit signal transmitter
2 Min. limit signal transmitter
3 Isolated switch amplifier
F Flowmeter
G00465
VA Master FAM540
Installation
G00466
bistable
± 0.5 % of scale end value
8 V DC (Ri approx. 1 kΩ)
5 ... 25 V DC
3 kHz
Auxiliary power Channel
24 V, DC 1
115 V, AC 1
230 V, AC 1
24 V, DC 2
115 V, AC 2
230 V, AC 2
EN - 13