Description Of Functions - Buhler TC-Kit Manual Del Usuario

TC-Kit (+)
Description of signal outputs
Function / Description
contact type
internal the following
changeover device
contact: max. statuses can
250 V AC/150 be indicated
V DC, 2 A, via two
50 VA switching
outputs:
4-20 mA ana- Signalling of
logue output actual tem-
(R <500 Ω) perature
Load
(please use
shielded
cables)
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
After starting the cooler, the software version will be dis-
played, followed by the block temperature. The display S2 will
stay on until the block temperature has reached the preset
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 item "Troubleshooting".
Please refer to the data sheet for performance data and max-
imum ratings.
When starting for the first time, optional equipment pur-
chased separately must be registered once. The options heat
exchanger material, analog output and moisture detector
must be configured, tested and registered in the menu.
16 Bühler Technologies GmbH
Contact between T6 and T7 on
the power board closed (alarm)
• No mains voltage and/or ac-
tual temperature outside
the alarm thresholds
Contact between T5 and T6 on
the power board closed (OK)
• Mains voltage attached +
actual temperature within
the alarm thresholds
With moisture detector option
Contact between 6 and 7 closed
(alarm)
• The moisture detector re-
gisters residual humidity in
the sample gas or cable
break: Error message
Contact between 5 and 6 closed
(OK)
• no residual moisture in
measuring gas / no cable
break
With temperature signal option
T = -20 °C ≙ (-4 °F) -> 4 mA/
Cooler
2 V
T = 5 °C ≙ (41 °F) -> 9 mA/
Cooler
4,5 V
T = 60 °C ≙ (140 °F) -> 20 mA/
Cooler
10 V

5.1 Description of functions

The cooler is controlled by a microprocessor.
The programmable display shows the block temperature in
the selected display unit (°C / °F) (factory preset °C). Applica-
tion-specific settings can easily be configured guided by the
menu, using the 5 buttons. For one, this applies to the target
outlet dew point, which can be set from 2 to 20 °C (36 to 68 °F)
(factory setting 5 °C/41 °F).
And then the warning thresholds can be adjusted for low and
excess temperature. These are set relative to the outlet dew
point τ setting.
a
For the low temperature the range is τ
imum 1 °C cooling block temperature), for the excess temper-
ature the range is τ +1 to +7 K. The factory settings for both
a
values are 3 K.
The flashing display as well as a red LED on the display mod-
ule along with the status relay indicate the conditions are be-
low or above the configured warning range (e.g. after switch-
ing on).
The outputs are:
A potential-free status output. The relay is activated when the
block temperature is within the target range. The output also
serves as collective alarm for device faults, moisture ingress,
etc.
A switched output for connecting a gas pump. The output
uses the same relay as the status output. This output can only
be used for pumps designed for 24 VDC operating voltage.
Another relay output is available for switching up to two peri-
staltic pumps. The pumps are supplied with the mains voltage
and can be shut off via the device menu for maintenance pur-
poses.
The TC-Kit can optionally be configured for connecting a
heated line, which can be either self-regulating or a heated
line regulated by the cooler.
Operation via 115 VAC/230 VAC and using the regulator for a
heated line requires the optional expansion module.
-1 to - 3 K (at a min-
a
BX440028 ◦ 10/2020