Power Input And Power Consumption; Operating Hours; Lubrication Status Of Motor Bearings (Only 11-22 Kw); Time Till Relubrication Of Motor Bearings - Grundfos CRE Installation And Operating Instructions Manual

9.2.5 Power input and power consumption

Tolerance: ± 10 %
This display shows the actual pump input power from the mains
supply. The power is displayed in W or kW.
The pump power consumption can also be read from this display.
The value of power consumption is an accumulated value
calculated from the pump's birth and it cannot be reset.

9.2.6 Operating hours

Tolerance: ± 2 %
The value of operating hours is an accumulated value and cannot
be reset.

9.2.7 Lubrication status of motor bearings (only 11-22 kW)

This display shows how many times the motor bearings have
been relubricated and when to replace the motor bearings.
When the motor bearings have been relubricated, confirm this
action in the INSTALLATION menu. See 9.3.14 Confirming
relubrication/replacement of motor bearings (only 11-22 kW).
When relubrication is confirmed, the figure in the above display
will be increased by one.
9.2.8 Time till relubrication of motor bearings (only 11-22 kW)
This display shows when to relubricate the motor bearings.
The controller monitors the operating pattern of the pump and
calculates the period between bearing relubrications. If the
operating pattern changes, the calculated time till relubrication
may change as well.
The displayable values are these:
• in 2 years
• in 1 year
• in 6 months
• in 3 months
• in 1 month
• in 1 week
• Now!
9.2.9 Time till replacement of motor bearings (only 11-22 kW)
When the motor bearings have been relubricated a prescribed
number of times stored in the controller, the display in section
9.2.8 will be replaced by the display below.
This display shows when to replace the motor bearings. The
controller monitors the operating pattern of the pump and
calculates the period between bearing replacements.
The displayable values are these:
• in 2 years
• in 1 year
• in 6 months
• in 3 months
• in 1 month
• in 1 week
• Now!

9.3 Menu INSTALLATION

9.3.1 Control mode

Without sensor
(uncontrolled)
Select one of the following
control modes (see fig. 18):
• Controlled
• Uncontrolled.
If the pump is connected to a bus, the control
Note mode cannot be selected via the R100. See
section 14. Bus signal.

9.3.2 Controller

E-pumps have a factory default setting of gain (K
time (T ). However, if the factory setting is not the optimum
i
setting, the gain and the integral time can be changed in the
display below.
• The gain (K ) can be set within the range from 0.1 to 20.
p
• The integral time (T ) can be set within the range from 0.1 to
i
3600 s. If 3600 s is selected, the controller will function as a P
controller.
• Furthermore, it is possible to set the controller to inverse
control, meaning that if the setpoint is increased, the speed
will be reduced. In the case of inverse control, the gain (K
must be set within the range from –0.1 to –20.
With pressure sensor
(controlled)
Select one of the following
control modes (see fig. 18):
• Controlled
• Uncontrolled.
) and integral
p
)
p
19