Signal Outputs - Bühler technologies TC-Standart Guía Rápida

TC-Standard (+)
CAUTION
Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
Connection via plug
The device is equipped with connectors according to DIN
43650 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 connecting the
cable. The following figures show the pin assignment with re-
spect to the numbers printed on the connector.
Plug numbering Electric supply S1
115/230 V (24 V DC)
Alarm contact S2
The clamping area has a diameter of 8-10 mm.

4.4 Signal outputs

The device provides different status signals. The maximum
switching load of the alarm outputs is limited to 250 VAC/DC,
1 A each.
Alarm is set if the actual temperature of the cooler is higher or
lower than the preset alarm limits. The signal does not distin-
guish if the alarm is caused by to high or to low temperature.
When the moisture detector (optional) is installed, an alarm is
activated if the moisture 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.
If the option "temperature signal" is installed, the actual tem-
perature of the connector is provided as an analogue signal.
(Option "moisture detector" includes the option "temperature
signal".) The signal is provided via connector S2 (M12x1). This
port is placed next to the connectors of the moisture detector
on top of the cooler.
12 Bühler Technologies GmbH
(+24 V)
(-24 V)
Analogue output S3
1 - N/C
2 - n/c
3 - GND
4 - 4-20 mA out
5 - shield
Description of signal outputs
Function / Description
contact type
Re- internal the follow-
gard- changeover ing device
ing contact: max. statuses can
S2) 230 V AC / be indicated
150 V DC, 2 A, via two
50 VA switching
outputs:
Re- 4-20 mA ana- Signalling
gard- logue output of actual
ing (R <500 Ω) temperat-
Load
S3) ure (please
use shielded
cables)
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
After switching on the cooler the block temperature will be
displayed. The display will flash until the block temperature
has reached the preset target value (± adjustable alarm
range). The status contact is in the Alarm position.
Once the target temperature range has been reached, the
temperature will continuously be displayed and the status
contact switches over.
If the display flashes during operation or an error message ap-
pears, please refer to bullet "Troubleshooting".
Please refer to the data sheet for performance data and max-
imum ratings.
Contact between 3 and 2
closed (alarm)
• No mains voltage and/
or actual temperature
outside the alarm
thresholds
Contact between 3 and 1
closed (ok)
• Mains voltage attached
+ actual temperature
within the alarm
thresholds
With moisture detector op-
tion
Contact between 3 and 2
closed (alarm)
• The moisture detector
registers residual hu-
midity in the sample
gas or cable break: Er-
ror message
Contact between 1 and 3
closed (ok)
• no residual moisture in
measuring gas / no
cable break
With temperature signal
option
T = -20 °C -> 4 mA / 2 V
Cooler
T = 5 °C -> 9 mA / 4.5 V
Cooler
T = 60 °C -> 20 mA / 10 V
Cooler
BX440017 ◦ 03/2017