Signal Outputs - Bühler technologies TC-Standard (+) X2 Guía Rápida

TC-Standard (+) X2
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!
Electric strength test
This device is equipped with extensive EMC protection. The
necessary tests were carried out at the factory (test voltage
2.1 kV or 2.55 kV DC depending on approval).
If you wish to check the electric strength again yourself, you
can do so on the entire unit. Only test the device with the spe-
cified values using direct current voltage. Testing the electric
strength with alternating current voltage will damage elec-
tronic components. The recommended voltage in this case is
2.1 kV DC, 2 s. Disconnect all supply lines from the device be-
fore testing. Power can be supplied via the mains connection.
Connection via plug
The device is equipped with connectors according to EN
175301-803 for mains and status output. If the cables are
mounted properly, they cannot be interchanged. Please make
sure that the connectors are remounted correctly after con-
necting the cable. The following figures show the pin assign-
ment with respect to the numbers printed on the connector.
The supply line cross-sections must be suitable for the rated
current. Use a maximum line cross-section of 1.5 mm²
(AWG 16) and a cable diameter of 8 - 10 mm (0.31 - 0.39 inch).
Plug numbering
Alarm contact S2 *
*
* When using an alarm contact, connect to ≥ 33 V AC or
≥ 70 V DC PE voltage.
The clamping area is 8 - 10 mm (0.31 – 0.39 inches) in dia-
meter.
14 Bühler Technologies GmbH
Electric supply S1
115/230 V (24 V DC)
(+24 V)
(-24 V)
Analogue output S3
1 - N/C
2 - N/C
3 - GND
4 - 4-20 mA out
5 - shield

4.4 Signal outputs

The device provides different status signals. The maximum
switching load of the alarm outputs is limited to
250 V AC/150 V DC, 2 A, 50 VA each.
An alarm is triggered by the alarm contact/status output (S2)
if the temperature of the cooler is outside the specified limits.
It does not indicate if the alarm was triggered due to excess
temperature or insufficient temperature.
The front film has three LEDs:
Colour Marking Function
Red S2 High/low temperature, device error
Yellow S1 ---
Green OP Normal operation
The LEDs OP and S2 indicate the device status similar to S2.
If the option "temperature signal" is built in, the unit has a
signal output via the analogue output to indicate the actual
cooler temperature.
When the moisture detector (optional) is installed, an alarm is
activated by the alarm contact/status output (S2) if the mois-
ture is still present in the prepared sample gas. Thereby, no
distinction is made between the alarm/cable break triggered
by moisture detector 1 or 2. This information is displayed by
an error message instead.
The temperature signal can be read via the panel plug (S3) us-
ing the M12x1 connector. This plug is located next to the mois-
ture detector connectors at the top of the cooler.
BX440023 ◦ 12/2020