LB-762 Controller Installation Manual
LAB-EL
Rozdział 3
Connectors description
3.1
Mains supply
Mains supply connector is described as
AC 230V
and is in the middle of the lower edge of the regulator’s main plate. The
regulator IS NOT equipped with its own power supply switch, what means that an external mechanism must be provided
for mains power supply shutdown.
Connection contacts are described as
N
and
L
, what means Neutral (zero wire, blue color) and Live (phase wire, brown color).
Maintaining appropriate sequence of connecting wires N and L is not vital for correct operation of the machine, however, it
is highly recommended owing to preservation of the convention and elegance of the installation.
3.2
Earthing
Connector of earth is described as
EARTH
and is located on the left side of the mains supply connector.
Earthing should be running in a separate, dedicated cable in color green-yellow (in accordance with appropriate standards),
with eye tip phi 4mm, screwed down in the regulator to the screw clamp EARTH and connected outside to the respective
earth.
Caution
To ensure safety of use, proper operation of the regulator and immunity to interference, it is necessary to ensure
appropriate connection of the earth clamp!
IT IS NOT allowed to connect the earth clamp to contact N of the power supply connector ! Separate earthing is
required.
3.3
Measurement probes
LB-762 regulator is equipped with a number of inputs, ensuring attachment of the following probes:
• 2 psychrometers,
• 4 temperature probes of air-conditioning tunnel,
• 6 base temperature probes,
• 1 extra universal temperature probe.
3.3.1
Psychrometers
LB-762 regulator may cooperate directly with two psychrometers. When connected only to one psychrometer, it is used for
measurement of temperature and humidity in the cultivation hall. The second psychrometer may be used also for measurement
of temperature and humidity in the hall - in such case the regulator averages results from both measuring points, providing
greater independence of measurement from the gradient of temperatures and humidity in the cultivation hall. The second
psychrometer may also be used for other purposes, such as e.g. measurement of air parameters on the outlet of air-conditioning
tunnel. The basic psychrometer should be connected to input #1.
Psychrometer connectors are marked as:
•
PSYCHROMETER #1
,
•
PSYCHROMETER #2
.
Each of the psychrometers is attached using three wires:
•
DRY
- dry thermometer,
•
GND
- common wire (ground),
•
WET
- wet thermometer.
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