Grundfos UPE 32-80 - Page 13

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6.7.2 Bus module
The bus module enables serial communication with
the pump via an RS-485 input. The communication is
carried out according to the Grundfos bus protocol,
GENIbus, and enables connection to the Grundfos
Pump Management System 2000, a building man-
agement system or another type of external control
system.
Via the bus signal, it is possible to remote-set pump
operating parameters, such as desired head, tem-
perature influence, operating mode, etc. At the same
time, the pump can provide status information about
important parameters, such as actual head, actual
flow, power input, fault indications, etc.
For further details, consult the operating instructions
for the Grundfos Pump Management System 2000 or
contact Grundfos.
Note: When a bus module is fitted to the pump, the
number of settings available on the pump control
panel and via the R100 will be reduced.
The pump head and control mode can only be set via
the bus signal. The pump control panel or the R100
can only set the pump to max. curve and to stop.
However, an R100 is required if a number is to be al-
located to the pump. See also section 7.8 Priority of
settings.
In addition to the RS-485 input, the bus module has
three inputs for external signals for the forced-control
functions:
• Start/stop of pump.
• Max. curve duty.
• Min. curve duty (night-time duty).
If the pump has been forced-controlled to for in-
stance max. curve duty, the light fields on the pump
will indicate “max. curve”, see section 7.3.1 Setting
to max. curve duty.
Note:
• If no external on/off switch is connected, the con-
nection across terminals 7 and 8 should be main-
tained.
• All cables used must be heat-resistant up to at
least +85°C.
• All cables used must be installed in accordance
with EN 60 204-1.
Wiring diagrams of bus module:
Fig. 17
UPE 25-40, 25-40 A, 25-60, 25-60 A, 32-40 and
32-60 with MB 40/60
Fig. 18
UPE 25-80, 32-80, 40-80 and 50-80 with MB 80
• Wires connected to
- inputs 7 to 10 and
- supply terminals
must be separated from each other and
from the supply by reinforced insulation.
• All leads connected to a terminal block
must be tied up at the terminals.
TM00 4474 3394TM00 4476 3394
Maks. kurve
Start/stop
Maks.Min.Stop
98710
Min. kurve
(Natsænkning)
AY
BUS
B
546
4
5
6
7
8
9
10
Start/stop
Min. curve
(night-time duty)
Max. curve
Max.
Min. kurve
(Natsænkning)
Maks. kurve
Start/stop
10
AY
BUS
B
546
Maks.Min.Stop
98710
6
5
4
7
8
9
Start/stop
Min. curve
(night-time duty)
Max. curve
Max.