Pulsar Measurement FlowCERT, Инструкция по эксплуатации

Страница: 90 / 143

FLOWCERT LITE (UL) INSTRUCTION MANUAL
90
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, 223, 233, 243, 253 – Relay Setpoint 1
This parameter determines the ‘ ON ’ point of the pump.
P214, 224, 234, 244, 254 – Relay Setpoint 2
This parameter determines the ‘ OFF ’ poin t of 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.
P215, 225, 235, 245, 255 – 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, 229, 239, 249, 259 – Relay Max Rate
This parameter will allow a pump to be switched at a pre-determined Rate
of change of Level , irrespective of th e “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 energis ed 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.