wtw TresCon UNO A111, Руководство по эксплуатации

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TresCon UNO Operation
5 - 47 ba43134e08 05/2017
5.3.8 Relays as indicator contacts
If a relay is used as an indicator contact, a relay action is carried out
(
Open , Close ) if the monitored event occurs.
This function is suitable, e.g. for the monitoring of errors on the analyzer
modules. If an event takes place, the relay works as an indicator con-
tact.
Note
For monitoring functions, use the relay preferably as a normally closed
relay (see section 5.3.1). In the case of an error, the relay opens. As a
result, the monitoring function operates even if, e.g. the supply voltage
fails.
You can use the relay as an indicator contact for the following events:

Alarm: Lack of sample
Relay is activated if there is a lack of sample

Alarm: Container empty
Relay is activated if the container is empty

Alarm: Replenish container
Relay is activated if the fluid level in the container falls below 10 cm

Alarm: Malfunction
Relay is activated if a malfunction of any kind occurs

Measurement value valid
Relay is activated as long as the measured value is valid

Calibration running
Relay is activated when the analyzer module is in the calibration
mode

Measurement running
Relay is activated when the analyzer module is in the measuring
mode

Permeate state
If a permeate switch is installed, the relay is activated at the same
time as the three/two way valves of the permeate switch
Note
The messages, Lack of sample, Container empty/Fill container, can
only be output if the fluid level measurement and overpressure measu-
rement is active (see the M
AINTENANCE
chapter in the relevant sections
of the analyzer module in this operating manual).
Settings
Setting Selection/Values Explanation
Action Normally closed
Normally open Relay action (see
section 5.3.1)