Bühler technologies ModbusRTU TC-MIDI, Инструкция по установке и эксплуатации, Страница: 16 / 55

TC-MIDI (+)
Description of signal outputs
Function/contact type Description
Regard-
ing S2) internal changeover con-
tact: max.
250 VAC/150 VDC, 2 A,
50 VA the following device statuses
can be indicated via two
switching outputs: 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 at actual temperature within the
alarm thresholds
With moisture detector option
Contact between 3 and 2 closed (alarm)
– The moisture detector registers residual humidity 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
Regard-
ing S3) 4-20 mA analogue output
(R
Load
<500 Ω)
Signalling of actual temper-
ature T
cooler
= -20 °C ≙ (-4 °F) -> 4 mA/ 2 V
T
cooler
= 5 °C ≙ (41 °F) -> 9 mA/ 4.5 V
T
cooler
= 60 °C ≙ (140 °F) -> 20 mA/ 10 V
Regard-
ing S4) Digital output Modbus RTU (RS-485) Interface default values
Baudrate – parity – stop bit:
19200 – Even – 1
Default ID: 10
The bus lines are not internally terminated.
14 Bühler Technologies GmbH BE440016 ◦ 07/2022