Power Electronics SD700 Series, Руководство по применению, Страница: 24 / 63

SD700
POWER ELECTRONICS
22
DESCRIPTION OF PROGRAMMING PARAMETERS
3.6. Group 25 – G25: Pump Control
Parameter group accessible always that 'G1.7 PROG = PUMPS'.
3.6.1. Pumps Program General Description.
The objective of this functionality is to achieve a comprehensive control of the pumping systems
using variable speed drives of SD700 Series, using in that cases the minimum peripheral devices
as possible. The program comprises all that options which allows controlling the process
correctly, avoiding the use of those external auxiliary devices such as timers, relays, PLC, etc.
This program has been thought to control the drive and additionally to control up to 5 auxiliary fix
pumps. Apart of this there is the possibility of using one of this pumps as Jockey pump (it will
operate only under very low demand conditions in case of the drive is in sleep mode) or one
pump can be used as Priming pump (it will operate to fulfil the aspiration pipe if the system
requires this function).
3.6.2. Operation modes.
There are three operation modes basically:

Manual Protected Mode : One of the digital inputs must be set as Automatic and a second
digital input must be set as Protected Manual. Both inputs must be closed to start. In this
operation mode the system protections are operative (for example, high pressure, cavitation,
etc.). A main speed reference source and an alternative speed reference source exist, they
are set by means of a digital input.

Manual Non Protected Mode : This is an operation mode thought for commissioning and
test of the system. It is not recommended for a normal operation since the protections are not
active. There are two possibilities of configuring this mode:
o
Manual non protected mode with exclusive control from the keypad.
o
Manual non protected mode controlled by the digital inputs.
A main speed reference source and an alternative speed reference source exist, they are set
by means of a digital input.

Pumps Mode : The drive will operate in regulation mode with all the available functions and
the protections will be operative.
3.6.3. General Descriptions of Protections.
In case of the pump program is active, the drive will function in three different ways depending on
the activated protections:

Faults of the Drive (Standard Program): Here we can find those trips of the drive or trips of
the installation that have been configured in the standard program of the drive. In case of any
of these conditions occur, the motor controlled by the drive will stop, followed by the fixed
pumps and the display will show the corresponding fault message.

Pause of the Pumps Program: Certain protections can be configured to stop the drive
temporary without tripping by fault. For all of them there is only one time to start after the
pause, and this time will start once the cause which provoked the pause disappears. The
protections which can be set in this way are:
o
High Pressure: Configurable at Pause mode or at Fault mode. If it is set as Pause, the
displayed message will be „HI PRESSURE PAUS‟ but if this is set to Fault, the message
will be „F66 HI PRESSURE‟
o
No Flow: Configurable at Pause mode or at Fault mode. If it is set as Pause, the
displayed message will be „NO PLOW PAUSE‟ but if this is set to Fault, the message will
be „F69 FLOW SWITCH‟