ControlMaster CM30, CM50 and CMF310
Universal process controllers,
1
/
4
,
1
/
2
DIN and fieldmount
7 Advanced Level
82
IM/CM/ED–EN Rev. X
…Functions / …Bank Control
…Bank Control
Using
First In First Out
(
FIFO
) and
Rotate
modes on a 3 pump system
Bank
S
ize
Select the number of stages (pumps) required for the application from
2
to
6
or
Off
.
Off
disables the
Bank Control
functionality.
Control
S
ource
Select the analog signal to act as the control signal for the bank control.
This is normally the Process Variable (PV) for most pump control applications.
S
tage 1 (6)
Off Trip
Select the
Control Source
value (PV) at which the output (pump) is turned off.
On Trip
Select the
Control Source
value (PV) at which the output (pump) is turned on.
Output
Select the initial output (relay or digital output) that the output is assigned to by
default (for example, when
FIFO
or
Rotate
mode is not in operation).
Schedule
Select the wear levelling schedule required:
Off
– the output is not controlled by the bank schedule.
The state of the output is controlled entirely by its associated trip points.
FIFO
– the output is controlled according to the
FIFO
schedule mode.
Rotate
– the output is controlled according to the
Rotate
schedule mode.
P1
P2
P3
4 m
3 m
2 m
1 m
First In First Out (FIFO)
Level
P1
P2
P3
Level
P1
P2 P3
Seq. 1
1.3 m
Seq. 6
2.2 m
Seq. 2
2.2 m
Seq. 7
0.8 m
Seq. 3
3.6 m
Seq. 8
1.8 m
Seq. 4
4.3 m
Seq. 9
0.8 m
Seq. 5
2.8 m
Seq. 10
1.8 m
Rotate Pump Cycling
Level
P1
P2
P3
Level
P1
P2 P3
Seq. 1
1.3 m
Seq. 6
2.2 m
Seq. 2
2.2 m
Seq. 7
0.8 m
Seq. 3
3.6 m
Seq. 8
1.8 m
Seq. 4
4.3 m
Seq. 9
0.8 m
Seq. 5
2.8 m
Seq. 10
1.8 m
On trip
at 4 m
Off trip
at 3 m
On trip at 1.5 m
Off trip at 1 m
Pump 2
Pump 3
Pump 1
On trip
at 3.5 m
Off trip
at 2.5 m