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The fourth parameter, and the fifth parameter for each relay set the
pump “ON” and “OFF” points, which are entered in Measurement units
P104. For pump down the “ON” is set higher than “OFF”. For pump up
then “ON” is set lower than “OFF”. See the appropriate pump duty,
function table (P212, 222, 232, 242, 252) for further information.
P213, P223, P233, P243, P253 - Relay Setpoint 1
This parameter determines the “ON” point of the pump.
P214, P224, P234, P244, P254 - Relay Setpoint 2
This parameter determines the “OFF” point for the pump.
When a relay is being used for a pump by time function, then the sixth
parameter will determine the maximum time the pump will be allowed to
run before it is switched off and the next pump takes over.
P215, P225, P235, P245, P255 - Relay Setpoint 3
This parameter determines the Maximum Time the pump will be allowed to
run before being switched “OFF” and is entered in minutes.
The pump will switch off either at its “OFF” level Relay Setpoint 2 (P214,
224, 234, 244, 254) or its Maximum Run Time Relay Setpoint 3 (P215,
225, 235, 245, 255), whichever occurs first.
P219, P229, P239, P249, P259 - Relay Max.Rate
This parameter will allow a pump or general control relay 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 or general control 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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