VLT® 7000 Booster
Parameter
settings
# Display option 100% Capacity 200% Capacity 300%Capacity
1 R73 @100% R74
@200%
1 pump controlled by
relay R73
1pumpcontrolledbyrelay
R74
2 R73 100% R74,75
200%
1 pump controlled by
relay R73
2 pumps controlled by
relay R74, R75
3 R73,74 100% R75
300%
2 pumps controlled by
relay R73, R74
1pumpcontrolledby
relay R75
4 R73,74 100 75,76
300
2 pumps controlled by
relay R73, R74
2pumpcontrolledby
relay R75, R76
5 R73 @100% 1 pump controlled by
relay R73
6 R73, R74 @100% 2 pumps controlled by
relay R73, R74
7 R73-R75 @100% 3 pumps controlled by
relayR73,R74,R75
8 R73-R76 @100% 4 pumps controlled by
relay R73, R74, R75,
R76
9 R73-R77 @100% 5 pumps controlled by
relay R73, R74, R75,
R76, R77
10 R73-R78 @100% 6 pumps controlled by
relay R73, R74, R75,
R76, R77, R78
11 2 PUMPS:R71-R74
100%
2 pumps controlled by
relay R71, R72, R73,
R74
12 3 PUMPS:R71-R76
100%
3 pumps controlled by
relay R71, R72, R73,
R74, R75, R76
13 4 PUMPS:R71-R78
100
4 pumps controlled by
relay R71, R72, R73,
R74, R75, R76, R77,
R78
The lead pump is always a 100% capacity pump
and is always part of the system. The lead pump is
not mentioned in the table, for the choices (# 1-10)
related to Fixed lead pump control.
■ Quick menu 19 Par. 702 Staging bandwidth %
Par. 702 Staging bandwidth %
(STAGING BANDW%)
Value:
1 - 100% (100% = Off)
✭ 5%
Function:
In cascade control systems, to avoid frequent switching
of fixed speed pumps, the desired system pressure
is typically kept within a bandwidth rather than at
a constant level. The Staging bandwidth (SBW)
is programmed as a percentage of the setpoint
(desired pressure). For example, if the setpoint is 5
bar and the SBW set at 10%, a system pressure
between 4.5 and 5.5 bar is tolerated. No staging or
destaging will occur within this bandwidth.
Description of choice:
Set the staging bandwidth percentage to
accommodate system pressure fluctuation.
MG.70.A1.02 - VLT is a registered Danfoss trademark
99
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