98 Default control connections
Application control PCP/ESP
This default connection scheme is used for PCP/ESP application. Pump speed
reference is constant and selectable through parameter 74.05 Speed ref source.
The application works through Ext1 and Ext 2 control locations.
The start/stop signal is connected to digital input DI1. The reset is determined by
digital input DI2. Klixon temperature sensor is connected to input DI3. Input DI4 is
responsible for pressure protection. Pressure limits and temperature limits are set
through corresponding parameters, as well as protection modes.
PT100 source feedback goes through input AI1 scaled. AO2 is used for feeding
excitation current. Pressure feedback source goes through AI2 scaled as a current
signal in the range of 020 mA.
Default parameter settings for the PCP/ESP
Below is a listing of default parameter values that differ from those listed for the
factory macro in Parameter listing (page 105).
Parameter
PCP/ESP control default
No. Name
20.01 Ext1 commands In1 Start
20.06 Ext2 commands Not selected
74.01 Pump enable Enable
74.02 Run-time hours reset source No
74.05 Speed ref source AI1 scaled
76.01 Pressure protection function Disable
76.02 Pressure protection latching Non latching
76.03 Digital feedback source enable FALSE
76.04 Digital feedback source FALSE
76.05 Analog feedback source enable FALSE
76.06 Analog feedback source Zero
76.07 Analog feedback limit 0.00 kPa or psi
76.08 Analog feedback limit delay time 0.000 s
79.01 Temperature protection function No
79.02 Temperature protection device Klixon
79.03 Klixon signal source FALSE
79.04 PT100 source Zero
79.05 PT100 exitation source Zero
79.06 PT100 internal selection 9.10 mA
79.07 Number of PT100 sensors in series 1
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