TESTO 6681 Profibus Instruction Manual page 33
Humidity transmitter
with profibus module testo 6610.
probes p2a software. parameterizing, adjusting and analyzing software
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Also See for 6681 Profibus:
- Instruction manual (154 pages) ,
- Instruction manual (85 pages) ,
- Instruction manual (100 pages)
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Use of relay as NC contact (NC = normally closed)
Alarm/status light
(example of installation)
250 V AC/DC, 3 A
The busy light (alarm/status light) is permanently on until the
relay opens or the circuit is interrupted. This circuit can
therefore be used to monitor the functionality of the alarm
circuit, as a cable break, for instance, is indicated by the busy
light going off.
Use of relay as NO contact (NO = normally open)
Alarm/status light
(example of installation)
250 V AC/DC, 3 A
testo 6681 Profibus
- 1.3 Commissioning 33
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