Conair GB, WSB manual

The last digit determines the adjustment rate. Zero in the last position means make the full adjustment immediately. Any value from 1 to 9 indicates the percentage adjustment that will be made each cycle when the level sensor condition changes.

See RHL below for examples.

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RHL (LEVEL SENSORS are required for this parameter to work) (Use only if you have regrind level sensors fitted)

RHL instructs the controller to change the regrind setting of one selected regrind component if optional level sensors in the regrind hopper indicate high or low conditions. The component to be changed is determined by the first digit of the ROV parameter above.

NOTE: The component being controlled is ALWAYS automatically assigned to the bottom set of thumbwheel switches.

If set to all zeros (RHL 00000), then this parameter is ignored. ROV alters the way RHL is interpreted.

If the last digit of ROV = 0, (ROV x0000), then RHL numbers indicate NEW settings that are to be run when regrind level is high or low.

If the last digit of ROV = 1 to 9 (ROV x0001) to (ROV x0009), then RHL indicates upper and lower regrind usage limits only, and regrind usage will be adjusted slowly, to these limits, based on the ROV number.

IF ROV equals zero (ROV 10000):

In this (and all) examples, ROV is selecting component 1 as the controlled component. (ROV 10000)

If RHL is set to any value, the first 3 digits of the parameter indicate a new Regrind setting to use when the material level is ABOVE the HIGH level sensor; (sensor is covered). The last 2 digits indicate a new setting to use if material level is BELOW the LOW sensor; (both High and Low sensors are uncovered).

In other words, RHL allows the selection of a percentage that is HIGHER then normal, and a percentage that is LOWER then normal. NORMAL is what you put on the bottom thumbwheel switch.

Sensors are assumed to be covered when NO signal is returned. If a sensor is unplugged from the controller, it is read as "covered".

If you only have ONE SENSOR, it must be used as a HIGH level sensor. The absence of a sensor is read as a covered sensor; so the absence of the high sensor would signal the system to run at the high setting all the time. This would not be acceptable. The absence of the LOW sensor simple prevents the system from ever thinking it is very low. This is acceptable.

With a high level sensor only, the system switches between the NORMAL thumbwheel setting and the HIGH setting indicated by the first 3 digits of the parameter. The last 2 digits have no effect, since a LOW condition is never detected.

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