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This parameter determines the “OFF” point for the pump.
The sixth parameter will determine the service ratio that will be used to
switch the pump, when pump duty selected is a Service Ratio duty.
P211, 221, 231, 241, 251 = 6, 7 or 9 (Service ratio)
P215, P225, P235, P245, P255 - Relay Setpoint 3
This parameter determines the Service Ratio in values of %. See the
appropriate pump duty function, table (P211, 221, 231, 241, 251), for
further information.
P219, P229, P239, P249, P259 - Relay Max.Rate
This parameter will allow a pump to be switched at a pre-determined Rate
of change of Level, irrespective of the “ON” level setpoint P213, 223, 233,
243, 253. Once a pump relay has been switched “ON” by the pre-
determined Rate of Change, it will remain energised until the level reaches
the “OFF” level setpoint P214, 224, 234, 244, 254.
Max. Rate is entered in Measurement Units (P104) per minute and can be
entered as either positive (increasing level) or negative (decreasing level)
values.
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