Setup, Analog Input; Setting Of Date And Time; Multi-Pump Setup" ("Setup Of Multi-Pump System") - Grundfos CRE Installation And Operating Instructions Manual

8. Select electrical input signal according to the sensor
specifications.
9. Set the desired setpoint.
10. Set the gain and integral time of the controller. See the section
on controller settings.
11. Check the summary of settings and confirm them by pressing
[OK].
Related information
8.1 "Setpoint"
8.4 "Control mode"
8.5 "Analog inputs"
8.11 "Controller" ("Controller settings")

8.42 "Setup, analog input"

Pump variant
CME
CRE, CRIE, CRNE, CRKE, SPKE, MTRE
This menu is only available in the advanced operating panel.
This menu guides you through the following:
"Setup, analog input"
• "Analog inputs" 1 to 3. See the section on analog inputs.
• "Pt100/1000 input" 1 and 2. See the section on Pt100/1000
inputs.
• "Adjusting the setpoint". See the section on setpoint.
• "Summary".
Related information
8.1 "Setpoint"
8.5 "Analog inputs"
8.6 "Pt100/1000 inputs"

8.43 "Setting of date and time"

Pump variant
CME
CRE, CRIE, CRNE, CRKE,
SPKE, MTRE
This menu is only available in the advanced operating panel.
Whether this menu is available or not, depends on the functional
module fitted in the pump:
Function (terminal)
"Setting of date and time"
1) See the section on the identification of functional module.
This menu guides you through the following:
• "Select date format". See the section on setting the date and
time.
• "Set date". See the section on setting the date and time.
• "Select time format". See the section on setting the date and
time.
• "Set time". See the section on setting the date and time.
Related information
3.2.2 Identification of functional module
8.27 "Date and time" ("Set date and time")
56
"Setup, analog
input"
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"Setting of date and time"
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1) 1)
FM 200 FM 300
(standard) (advanced)
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8.44 "Multi-pump setup" ("Setup of multi-pump
system")
Pump variant
("Setup of multi-pump system")
CME
CRE, CRIE, CRNE, CRKE,
SPKE, MTRE
The multipump function enables the control of two pumps
connected in parallel without the use of external controllers. The
pumps in a multipump system communicate with each other via the
wireless GENIair connection or the wired GENI connection.
You can set a multipump system via the master pump, that is the
first selected pump.
If two pumps in the system are configured with an outlet-pressure
sensor, they can all function as master pumps and take over the
master pump function if the other should fail. This provides
additional redundancy in the multipump system.
The multipump functions are described in the following sections.
8.44.1 "Alternating operation"
Alternating operation functions as a duty/standby operating mode
and is possible with two pumps of the same size and type
connected in parallel. The main purpose of the function is to ensure
an even amount of running hours and to ensure that the standby
pump starts if the duty pump stops due to an alarm.
Each pump requires a non-return valve in series with the pump.
You can choose between two alternating operating modes:
• "Alternating operation, time" Change from one pump to the
other is based on time.
• "Alternating operation, energy" Change from one pump to the
other is based on energy consumption.
If the duty pump fails, the other pump starts.
8.44.2 "Backup operation"
Backup operation is possible with two pumps of the same size and
type connected in parallel. Each pump requires a non-return valve
in series with the pump.
One pump is operating continuously. The backup pump is operated
for a short time each day to prevent seizing up. If the duty pump
stops due to a fault, the backup pump starts.
8.44.3 "Cascade operation"
Cascade operation is only available in CRE and CME pumps on
request. Contact Grundfos for further information.
Cascade operation is possible with up to four pumps of the same
size and type connected in parallel. Each pump requires a non-
return valve in series with the pump.
Up to 4 pumps can be operating continuously depending on
consumption. Pumps will be cut in and cut out to ensure a constant
controlled value, for example, constant pressure, and to ensure a
high system efficiency and an even amount of running hours.
8.44.4 "Alternating operation, time"
The interval of alternation between the two pumps. The function is
only available in alternating operation.
8.44.5 "Time for pump changeover"
Time of day for a pump changeover to take place. The function is
only available in alternating operation.
8.44.6 "Sensor to be used"
Defines the sensor to be used for controlling the pump system. If a
sensor is placed in a way that enables it to measure the output from
all pumps in the system, for example, in the manifold, then select
"Master pump sensor".
"Multi-pump setup"
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