7 Operation
58 of 68
Calio
1157.821/04-EN
7.3.6 Ramps
During normal operation the motor responds to a setpoint change of the pump
controller with maximum dynamic. To prevent pressure surges this dynamic is limited
while the pump set is started up / stopped or when the pump controller changes the
setpoint in large increments. The ramps' dynamic is set via the KSB ServiceTool. The
ramps' function and settings are described in the KSB ServiceTool supplementary
operating manual.
7.3.7 Deblocking the impeller
Function
The pump is started up at maximum torque to remove any mechanical blocking
which may occur (at the impeller or motor shaft). The pump's current input is limited
in this case (protective function). If the blocking cannot be removed, the pump will
stop the start-up attempt, and error code E04 will be displayed. After a short interval
the pump will try to start up again. The start-up attempts are limited to 24 hours.
Once the pump has started up successfully, it will acknowledge the error message;
error code E04 will disappear from the display.
Settings
None
7.3.8 Temperature monitoring
To protect the motor against overheating a sensor monitors the winding
temperature If the temperature enters the critical range, the motor outputs
warning E05 and the maximum permissible speed is limited. The speed limit settings
are described in the KSB ServiceTool supplementary operating manual.
7.3.9 Monitoring equipment
The pump set checks that the following values are observed:
▪
Minimum/maximum flow rate
▪
Fluid temperature
The monitoring options
flow rate limit (Flow Limit)
and
high fluid temperature
can
be enabled via the KSB ServiceTool. The functions and settings are described in the
KSB ServiceTool supplementary operating manual.
7.3.10 Saving data
Function
The operating data of the pump are saved. Data storage will be maintained also
when the pump is stopped or de-energised. When the pump is started up again, it
will be operated with the data and duty point that were active before the pump was
last stopped.
Settings
None