Bühler technologies RC 1.2 Rack Kurzanleitung Seite 15

RC 1.2 Rack, RC 1.2+ Rack
Condensate lines must always be installed with a slope and a
minimum inside diameter of DN 8/10 (5/16").
4.3 Electrical connections
The operator must install an external separator for the device
which is clearly assigned to this device.
This separator
• must be located near the device,
• must be easy for the operator to reach,
• must comply with IEC 60947-1 and IEC 60947-3,
• must separate all live conductors and the status output,
and
• must not be attached to the power feed.
The power supply line of the device must be protected accord-
ing to the specifications in the technical data.
WARNING
Hazardous electrical voltage
The device must be installed by trained staff only.
CAUTION
Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
WARNING
High voltage
Damage to the device in case of insulation testing
Do not proceed insulation tests with high voltage to the
device as a whole!
Insulation test
The device is equipped with extensive EMC protection. If insu-
lation tests are carried out the electronic filter devices will be
damaged. All necessary tests have been carried out for all con-
cerned groups of components at the factory (test voltage 1 kV
or 1.5 kV respectively, depending on the device).
If you wish to carry out the insulation test by yourself, please
test only separate groups of components.
Disconnect the compressor, the fan, the heating or the peri-
staltic pumps, respectively, and then carry out the insulation
tests.
Connection via plug
The device is equipped with a plug according to EN 175301-803
for power supply and signal output. The following are the pin
assignments, with the numbers corresponding to those on the
plugs.
The supply line cross-sections must be suitable for the rated
current. Use a maximum line cross-section of 1 mm² (AWG 17)
and a maximum line cross-section of 1.5 mm
cable diameter of 8–10 mm (0.31–0.39 inches).
BX450040 ◦ 07/2025
pin assignment
The clamping range has a diameter of 8–10 mm.
4.4 Signal outputs
At the top of the device there is a 12-pole terminal block
providing various status signals.
The maximum supply voltage is 30 V AC / 60 V DC.
A Status output humidity
(residual moisture) (op-
tion)
B Cooler status output (ex-
cessive or insufficient
temperature)
C Analogue temperature
output (4–20 mA) (op-
tion)
4.4.1 Signalling via the display
The front foil contains three LEDs:
Colour
Red
Yellow
Green
The OP and S2 LEDs indicate the device status in the same way
as the status output S2, B.
4.4.2 Humidity status output (A)
The maximum switching capacity of the status output is
30 V AC / 60 V DC, 1 A.
The status output (S2, A) indicates when residual moisture is
still present in the conditioned sample gas or if a cable break
2
(AWG 16) and a
is detected at the humidity sensor. The signalling does not dis-
tinguish between humidity sensor 1 or 2.
D Device ground: Connec-
tion of the shield for the
4-20 mA signal line
E Digital output (option)
Marking Function
S2 High/low temperature, device error
S1 ---
OP Normal operation
Bühler Technologies GmbH
power supply
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