Electrical Connections; Signal Outputs - Bühler technologies TC-Double Guía Rápida

TC-Double (+)
The gas inputs are marked in red.
On glass heat exchangers the correct position of the seal is im-
portant when connecting the gas lines (see image). The seal
consists of a silicone ring with a PTFE sleeve. The PTFE side
must face the glass thread.
Glass
PTFE

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.
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.
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.
12 Bühler Technologies GmbH
Plug numbering
Alarm contact S2
The clamping areas for S1 and S2 are 8-10 mm in diameter.

4.4 Signal outputs

The device has various status signals (also see table Signal
outputs [} 12]). 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 in block 1 is outside the specified limits. It
does not indicate if the alarm was triggered due to excess
temperature or insufficient temperature.
Description of signal outputs
Function / Description
contact type
Re- internal the following
gar changeover device
d- contact: statuses can
ing max. be indicated
S2) 230 V AC / via two
150 V DC, switching
2 A, 50 VA outputs:
Re- 4-20 mA Signalling of
gar analogue actual tem-
d- output perature in
ing (R <500 Ω block 1 (please
Load
S3) ) use shielded
cables)
Electric supply S1
Analogue output S3
1 - N/C
2 - n/c
3 - GND
4 - 4-20 mA out
5 - shield
Contact between 3 and 2
closed (alarm)
• No mains voltage and/or
actual temperature out-
side the alarm
thresholds
Contact between 3 and 1
closed (ok)
• Mains voltage attached
+ actual temperature
within the alarm
thresholds
With temperature signal op-
tion
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
BX440021 ◦ 06/2017