Ramps; Standstill Heating; Alarm Handling; Motor Bearing Monitoring - Grundfos TPE2 D Manual Del Usuario

17.25 "Ramps"

Pump variant
TPE3 (D)
TPE2 (D)
The ramps determine how quickly the motor can accelerate and
decelerate, during start/stop or setpoint changes.
You can set the following:
• acceleration time, 0.1 to 300 seconds
• deceleration time, 0.1 to 300 seconds.
The times apply to the acceleration from 0 rpm to fixed maximum
speed and the deceleration from fixed maximum speed to 0 rpm.
At short deceleration times, the deceleration of the motor may
depend on load and inertia as there is no possibility of actively
braking the motor.
If the power supply is switched off, the deceleration of the motor
only depends on load and inertia.
Speed
Rated
Maximum
Minimum
Initial ramp
Ramp-up
Fig. 68 Ramp-up and ramp-down
Factory setting
See section 35. Factory settings.

17.26 "Standstill heating"

Pump variant
TPE3, TPE3 D
TPE2, TPE2 D
You can use this function to avoid condensation in humid
environments. When you set the function to Active and the pump
is in operating mode Stop, a low AC voltage will be applied to the
motor windings. The voltage is not high enough to make the
motor rotate but ensures that sufficient heat is generated to avoid
condensation in the motor including the electronic parts in the
drive.
Remember to remove the drain plugs and fit a cover
over the motor.
For further information, see section
Factory setting
See section 35. Factory settings.

"Ramps"

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Time
Final ramp
Ramp-down

"Standstill heating"

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8.9 Outdoor installation.

17.27 Alarm handling

Pump variant
TPE3, TPE3 D
TPE2, TPE2 D
The alarm handling determines how the pump must react in case
of a sensor failure.
Inputs
"Analog input 1" "Warning": no change of operation.
Stop: an alarm is given, and the pump stops.
"Analog input 2"
Min.: an alarm is given, and the pump
"Analog input 3"
reduces speed to minimum.
"Built-in
Max.: an alarm is given, and the pump
Grundfos
increases speed to maximum.
sensor"
"User-defined speed": an alarm is given,
and the pump runs at a speed set by the user.
"Liqtec input"

17.28 Motor bearing monitoring

Pump variant
TPE3, TPE3 D
TPE2, TPE2 D
You can set the motor bearing monitoring function to these
values:
• Active
• Not active
When the function is set to Active, a counter in the controller will
start counting the mileage of the bearings.
The counter continues counting even if the function is changed to
Not active, but a warning is not given when it is time for
replacement.
When the function is changed to "Active" again, the accumulated
mileage is again used to calculate the replacement time.
Factory setting
See section 35. Factory settings.
Alarm handling
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Alarm handling

Motor bearing monitoring

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