Nivetec Echo Smart Series, Руководство по эксплуатации и установке

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10.2.
Troubleshooting
The following recommendations address the most often encountered troubleshooting
needs with the EchoSmart equipment. If the described procedure does not resolve the
problem, contact Entech Design for further assistance.
10.2.1. Comm Error Message
A Comm Error message indicates that communication between the Controller and
Sensor(s) has been interrupted for an extended period of time. Verify that the
sensor associated with the alarm is properly powered and that all sensor and
communication cables are connected correctly.
In the case of a Wireless Field Network of Sensors, consider metal structures,
cabinets and mounting fixtures that may intervene in the path of the RF signal.
Contact Entech Design for corrective actions that may be necessary.
10.2.2. Echo Loss Message
An Echo Loss message indicates that the instrument does not have a signal that is
reliable for measurement. This can occur as a result of the sensor not being
submerged in water or as a result of an abnormal process condition (sludge level
too near the sensor, excessive off-gassing, unsettled suspended solids in the
supernatant, or material or bubbles collecting on the face of the sensor
) . It can also
be the result of incorrect operating parameters installed in the sensor.
Corrective action includes a physical inspection of the sensor(s) and process to
determine whether any of the above referenced conditions exist. If a Wiper Sensor
is in use, confirm that the wiper arm is in place and that the wiper turns when (1)
power is cycled, (2) the sensor Reboot command is called, or (3) the Wiper Timing
setting is changed.
Check instrument parameters. Confirm that the Tank Depth, Zero Adjust, Min
Range and Max Range settings are correct and that Auto Gain is ON. Contact
Entech Design for information regarding other parameter settings that may require
adjustment.
10.2.3. Validating Message
Validating
is the “handshake” process that occurs when an EchoSmart Controller
initiates communication with the sensor(s). This takes place when the Controller is
initialized or when a sensor is manually added to the sensor database. This step is
normally completed rapidly and may not be noticed by the user. If the Validating
message continues for an extended period of time, there is a communication
problem that may require corrective action (See Sec. 10.2.4).
10.2.4. Validation Failure Message
If a sensor does not validate as expected, the Controller has been unable to
communicate with the sensor, and the Validation Failure message will be displayed.
Check all sensor and network cabling and connections and re-check main power to