Walchem WebMaster ONE Instruction Manual page 90

Hand Time Limit
Type in the text box the maximum number of minutes that the relay can be activated in the Hand
mode. Any value between 1 and 1440 is acceptable.
Click on the "Submit" button to save the changes.
Output Mode
Click on the radio buttons to manually control the relay. The normal selection will be Auto, where
the controller uses the various set points to open and close the relay. You can force the relay closed
regardless of the set points by selecting Hand, or force the relay open regardless of the set points
by selecting Off.
If you select Off, the relay will not activate again until either Hand or Auto is selected (or if power
is cycled)! If you select Hand, the relay will activate until either Auto or Off is selected, or until
the Hand Time Limit (programmed in the next menu) expires or until the controller power is
cycled.
The Off mode is handy to prevent the relay from activating while you are changing set points. The
Hand mode is handy to be able to test the pump or valve, wiring, etc without needing to change set
points.
Event Log
Click on the link to view the event log. The event log contains the date and time of each relay
activation and deactivation, as well as the state of each Interlock, Level Switch, or Generic digital
input.
Type of Event
Relay output
Interlock DI
Level Switch DI
Generic DI –
Alarm selected
Generic DI – No
Alarm selected
A window will open to ask if you would like to open the file or save it to disk. Select the method
you would like to use. The file is .csv (comma separated variable) file that will open in a
spreadsheet such as Excel.
Status to generate a '1' in the log
Relay activated
In the Interlock state as defined in
the Interlock page
In the Low Alarm state as defined
in the Level Switches page
In the Alarm state as defined in the
Generic Inputs page
Switch closed
Status to generate a '0' in the log
Relay not activated
In the non-Interlock state as defined in
the Interlock page
In the Normal state as defined in the
Level Switches page
In the Normal state as defined in the
Generic Inputs page
Switch open
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