PULSAR MEASUREMENT
87
Pumps
P210, 220, 230, 240, 250 = 2 (Pump)
When a relay is being used for a
pump
function, the
second parameter
determines the
pump duty
that will be used to determine the operating
cycle.
P211, 221, 231, 241, 251
–
Relay Function
This parameter defines which
pump duty
the relay should respond to as
follows:
PUMP DUTY
DESCRIPTION
0 = Off (Default)
Relay is always de-energised
1 = Fixed duty assist
All pumps are used to assist each other (run at
the same time) and each pump has its own
setpoints. (P2
1
3, 2
2
3, 2
3
3, 2
4
3, 2
5
3 & P2
1
4, 2
2
4,
2
3
4, 2
4
4, 2
5
4).
2 = Fixed duty backup
If a pump fails to meet the demand (due to
malfunction, intake blockage etc.), then it is
stopped, and another pump shall take over. Each
pump has its own setpoints. (P2
1
3, 2
2
3, 2
3
3,
2
4
3, 2
5
3 & P2
1
4, 2
2
4, 2
3
4, 2
4
4, 2
5
4).
3 = Alternate duty assist
All pumps are used to assist each other (run at
the same time). Each pump has its own
setpoints, (P2
1
3, 2
2
3, 2
3
3, 2
4
3, 2
5
3 & P2
1
4, 2
2
4,
2
3
4, 2
4
4, 2
5
4) but each time all pumps have
stopped, the setpoints are sequentially rotated
between the pumps to ensure equal pump use.
4 = Alternate duty backup
If a pump fails to meet the demand (due to
malfunction, intake blockage etc.), then it is
stopped, and another pump shall take over. Each
pump has its own setpoints, (P2
1
3, 2
2
3, 2
3
3,
2
4
3, 2
5
3 & P2
1
4, 2
2
4, 2
3
4, 2
4
4, 2
5
4) but each
time all pumps have stopped, then the setpoints
are sequentially rotated between the pumps to
ensure equal pump use.
