Wilo DD-I, Installation And Operating Instructions Manual

Page: 148 / 196

en Configuration
148 WILO SE 2020-12
6.6.2 Emerged Operation
The motor winding is equipped with temperature monitoring. This monitoring enables
the pump to carry out non-immersed operation without reaching the max. winding
temperature. The temperature is measured using Pt100 sensors.
ƒ
Enable
Switch function on and off.
Factory setting: Off
ƒ
Restart Hysteresis
Temperature difference to the temperature limit beyond which the pump is
switched on again.
NOTICE! Required for "Two-point controller" operating mode
only!
Factory setting: 5 °C
Input: 1 bis 20 °C
ƒ
Temperature Limit
The temperature limiter is activated once the set temperature limit has been
reached.
Factory setting: Ex works warning threshold for winding temperature
Input: 40 °C to ex works shutdown temperature of the winding
ƒ
Operating Mode
Factory setting: On/Off
Input: On/Off (two-point controller) or PID
–
On/Off (two-point controller)
Pump is switched off once it reaches the set temperature limit. The pump
switches back on as soon as the winding temperature has once again dropped by
the set hysteresis value.
–
PID
In order to prevent the pump being shut down, the motor speed is controlled as a
function of the winding temperature. The motor speed is reduced as the winding
temperature increases. This enables a longer pump operation.
6.6.3 Operating Mode (Pump)
ƒ
Operating Mode Selection
Specify in which operating mode the pump is being used.
Factory setting: Off
Input: Auto, Manual or Off
–
Off
Pump off.
–
Manual
Switch on pump by hand. The pump runs until the "Off" button has been clicked
or the switch-off level has been reached.
NOTICE! Enter a frequency for the duty point for manual operation! (See menu:
"Function Modules ➜ Operating Mode ➜ Frequency in Manual Mode")
NOTICE! "LSI" system mode: manual operation is only possible if the master
operating mode is "off"!
–
Auto
Automatic operation of the pump.
"LPI" system mode: Setpoint specification using primary control.
"LSI" system mode: Setpoint specification by the system master.
ƒ
Frequency in Manual Mode
Frequency set point for the duty point in
manual operation .
Factory setting: 0 Hz
Input: 25 Hz to max. rated frequency according to the rating plate
6.6.4 Clog Detection
The pump is equipped with an algorithm that can detect clogging in the hydraulics. The
basis for the algorithm is a deviation of the rated power from the reference curve. The
reference curve is calibrated during a
“learning phase” . The conditions for the clogging
detection are saved in the “Settings” .