Signal Outputs - Bühler technologies PCS.smart Guía Rápida

PCS.smart (+)
The heated line may only be connected to electricity directly
through the built-in socket in accordance with the specifica-
tions for the PCS.smart portable gas conditioning system.
DANGER
Electric voltage
Risk of electric shock
a) Always disconnect the unit from the mains before per-
forming work.
b) Secure the equipment from accidental restarting.
c) The unit may only be opened by trained, competent per-
sonnel.
d) Ensure the correct voltages supply.
e) An add-on sensor (Pt100) must be shielded.
The maximum power input of the consumer is 1600 W at a
voltage of 230 V and 800 W at a voltage of 115 V. The max-
imum current is 7 A.

4.4 Signal outputs

The device has various status signals (also see table "Descrip-
tion of signal outputs"). The maximum switching power of
the alarm outputs is 230 VAC/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 alarm
contact 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
will also be triggered via the alarm contact / status output
(S2) if moisture is still present in the conditioned sample gas
or a cable break is detected.
The temperature signal can be read via the panel plug (S3) us-
ing the M12x1 connector. This plug is located on the terminal
side.
BX464004 ◦ 08/2018
Description of signal outputs
Function / Description
contact type
Re- internal the follow-
gard- changeover ing device
ing contact: max. statuses
S2) 230 V AC / can be in-
150 V DC, 2 A, dicated via
50 VA two switch-
ing out-
puts:
Re- 4-20 mA ana- Signalling
gard- logue output of actual
ing (R <500 Ω) temperat-
Load
S3) ure (please
use shiel-
ded cables)
5 Operation and control
NOTICE
PCS.smart is a portal device which must always be operated
inside the original transport case. The side cover flaps must
be open during operation.
Only operate and transport the unit upright. Operating the
device with the cover flaps closed or outside the specifications
is prohibited!
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".
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: Error
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 °F) ->
Cooler
4 mA/ 2 V
T = 5 °C ≙ (41 °F) -> 9 mA/
Cooler
4,5 V
T = 60 °C ≙ (140 °F) ->
Cooler
20 mA/ 10 V
Bühler Technologies GmbH 13