Grundfos Hydro 2000 F, Инструкция по установке и эксплуатации

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3.1.12 Reduced operation
Operation with PFU 2000 RAM / PMU 2000 settings:
If reduced operation is activated, a number of pumps, but not in-
dividual pumps, can be defined as pumps ready for operation.
The system performance is restricted to the set number of
pumps.
Reduced operation is activated if the PFU 2000 input 4 is set to
“reduced op” (display 222) and the input 4 contact is closed.
The number of pumps required to run when reduced operation is
activated is set in the display appearing after display 222.
The setting range is from one pump to the number of pumps con-
nected to the zone less one.
Application: Emergency power operation with a limited perform-
ance.
The default setting is 0.
Operation with PFU 2000 EPROM settings:
The default setting is 0.
3.1.13 Pump priority
Operation with PFU 2000 RAM / PMU 2000 settings:
The set “pump priority” (display 227) determines the operating
priority of the pumps connected to a zone.
Pumps with the highest priority are switched on first. Pumps with
the lowest priority are switched off first.
Pumps of equal priority and equal size are subject to:
First in, first out.
The setting range is 1 (highest priority) to 8 (lowest priority).
In systems type MFH, all pumps must be set to the same priority.
Different settings will be ignored.
The default setting is 1.
Operation with PFU 2000 EPROM settings:
The default setting is 1.
3.1.14 GRUNDFOS BUS
The GRUNDFOS BUS protocol must be observed in the system
configuration, mainly if various controllers are connected via a
GRUNDFOS BUS.
Fig. 13
Possible number of pumps in a zone and on a BUS: 1 to 8.
Pump numbers in a zone or on a BUS: 1, 2, 3, 4, 5, 6, 7, 8.
Number of zones: 1 to 8.
Zone names: A, B, C, D, E, F, G, H.
It is possible to give the zones specific names.
Number of PFU 2000 units in a zone: 1 or 2.
Number of PFU 2000 units on a BUS: 1 to 8.
If more than one PFU 2000 are used in a zone, this must be taken
into account when setting the DIP switches in the PFU 2000.
If more than one booster set, e.g. three booster sets, are con-
nected via a GRUNDFOS BUS, the numbering of the pumps, i.e.
from 1 to 8, must be made on the GRUNDFOS BUS level.
For further information, see section
6.3.1 PFU 2000 DIP switch settings and
List of Control Parameters.
Zone A
4 pumps
Zone B
3 pumps
Zone C
1 pump
Zone
Pump
number
1 2 3 4 1 2 3 1
BUS
Pump
number
1 2 3 4 5 6 7 8
PCU 2000
PMU 2000
PFU 2000
1 2 3 4
ZONE A
PFU 2000
5 6 7
ZONE B
PFU 2000
8
ZONE C
no. 3 no. 2 no. 1
GRUNDFOS BUS
Example of units connected via GRUNDFOS BUS
TM
00
27
44
02
94