Introduction, Electrical connection, 1 terminals – Tecfluid AMM For 6000 Series User Manual
Page 4: 1 introduction, 2 electrical connection
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1 INTRODUCTION
The limit switch 60-AMM allows to adjust the actuation of an electric contact in a desired
point within the scale of a 6000 series flowmeter.
The working principle is by means of a micro-switch actuated by a magnetic field.
The flow variations move the float into the metering tube. The float, as it passes through
the point where the 60-AMM limit switch is, by means of magnetic coupling acts on a
rotating system that presses the micro-switch lever changing its position.
The micro-switch position is maintained until the float passes in the opposite direction
through the point where the limit switch is, changing back to its original state.
2 ELECTRICAL
CONNECTION
For the electrical installation it is recommended to use multiple conductor cables with
individual cable sections in the order of 0.25 to 0.5 mm
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in order to make it easier to connect.
Individual cables should not be used as they will impair the IP-65 rating of the cable gland.
Before starting the installation, check that the cable to be used are the right size for the cable
gland on the connector, this will guarantee the instrument will stay water tight.
Peel the outside insulation to free the inner cables. It is recommended to tin the ends of
the wires to avoid loose ends.
To help in the wiring of the equipment, the description of the terminals is marked on the
printed circuit next to the terminal strip. Pass the cables through the cable gland and screw
in the cables in their positions. Once the wiring is finished make sure that the cables are well
gripped by the cable gland to maintain the ingress protection degree.
Before connecting the power supply, you must be sure that the Voltage and current values
are the correct for the installation. These values are indicated on the label of the limit
switch.
2.1 Terminals
In the female connector (A):
Terminal 1:
Common
Terminal 2:
NO
Terminal 3:
NC
Earth terminal: Earth
Terminal 2 is the normally open contact when
the float is below the limit switch or flow rate
detector.
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