4-1
Chapter 4 SET UP PROCEDURE
This chapter describes a simple step by step set up procedure of FRENIC-Ace for solar pumping application.
Please refer to:
-
chapter 2 for detailed information about installation and wiring
-
chapter 3 for the information about the operation of the keypad
-
chapter 5 for detailed description of the function codes.
In order to set up FRENIC-Ace for solar pumping application, please proceed with the following step by step
procedure:
1. Install the inverter as described in chapter 2 of this manual.
2. Set up the motor parameters and, whenever possible, execute the auto tuning procedure. If the
motor is already coupled with the load (pump) please execute static auto-tuning (P04=1). If the
motor can be dismounted from the load please execute dynamic auto-tuning (P04=2), which
measures more motor parameters than the static auto-tuning (for details, please refer to chapter 5).
Some functions like the dry pump detection and low power detection will work with the best
accuracy only if the motor parameters are correctly set.
3. Set up the parameter F02 (Operation method) to 1 (External signal).
4. Set up the parameter H11 (Deceleration mode) to 1 (Coast to a stop).
5. Set the PID control related parameters:
o
J01 (Mode selection) to 2 (inverse operation)
o
J02 (Remote command) to 1 (PID process command 1)
o
J06 (Feedback filter) to 0.0s (No filter).
6. Set up the following parameters related to the PV panel specifications:
o
Function code U126 (PV panel open circuit voltage) is used to set the PV panel open circuit
voltage
o
Function code U127 (PV panel MPP voltage) is used to set the PV panel MPP voltage
7. Set up the following parameters related to the MPP search (tracking) function:
o
Function code U121 (Enable MPP search) must be set
to “1.00” to enable the MPP search
function
o
Function code U135 (Voltage/PID set point increase/decrease step for MPP search) to set the
set point increase/decrease at each step of the MPP search function.
8. Set up the parameters related to the sleep function:
o
Function code J15 (Sleep frequency) to set the minimum frequency level to keep running,
because the pump is not anymore effective when rotating at lower speeds than the value set in
this function code. This setting depends mainly on the pump specifications.
o
Function code U134 (Power level to keep running) to set the minimum power level to keep
running. If the power level is very small, it means that the pump may not be effective anymore.
This setting depends mainly on the pump specifications.
It is important to note that it is not compulsory to set both parameters. The inverter can use either the
sleep frequency or the minimum power as the stop (sleep) criteria. In other words, it is not required to
fulfill both conditions.
Do not change the value of function code J17 from factory default value, otherwise it would interfere
with the sleep and wake up functions.
9. Set up the following parameters related to the wake up function:
o
Function code U131 (DC link voltage level to start) to set the minimum voltage level of the PV
panel (DC link) to allow the operation of the inverter. This parameter is very important to avoid
that the inverter (pump) starts operation when there is not enough available power from the PV
panel. The value of this parameter can be set from PV panel specification or from tests at very
low irradiance conditions (for example during sunset).
Do not change the value of function code J17 from factory default value, otherwise it would interfere
with the sleep and wake up functions.
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