Gardner Denver
15 Base Load Sequencing (BLS) (Optional)
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15 Base Load Sequencing (BLS)
(Optional)
15.1 About Base Load Sequencing
The Base Load Sequencing feature is optional.
Base Load Sequencing has two functions:
One central superior controller (the master) is
utilised to control a group of compressors in order
to maintain the line pressure within a narrow
pressure band.
The master controller regularly changes the
priorities of the compressors in the group
ensuring that the running hours of all machines
are equal. This assists with scheduled
maintenance.
15.2 System Requirements
A communication module (RS485:3 module) must be
installed on the master GD Pilot TS controller, if it has
not been pre-installed ex-factory. For more information
see chapter 15.13.
15.3 General description
If the optional RS485:3 module is installed, the GD
PILOT TS can act as a base load sequencing master
device. Up to 3 slaves can be connected to the master
via a serial link.
Note
All slave compressors must be of the same type, i.e. all
or all
.
The following compressor group configurations are
supported:
Supported group configurations
Type
Description
FS
The fixed-speed master can control
up to 3
slaves.
The rated volume flow of each
compressor within the base load
sequencing group should be
approximately the same as the
master.
Single VS
compressors
The regulated-speed master can
control up to 3
slaves.
The rated volume flow of each slave
compressor should be equal to or
slightly less than the master.
Multi VS
compressors
The regulated-speed master can
control up to 3
slaves.
The rated volume flow of each
compressor within the base load
sequencing group should be
approximately the same as the
master.
15.4 Supported slave controllers
Supported electronic slave controllers are GD Pilot
MK, GD Pilot and GD Pilot TS having the minimum
required software version installed.
If it is necessary to connect any other compressor
controller, or a compressor with electro-mechanical
control, to the master, a device known as a Compressor
Module (STD) can be installed into the slave. This
compressor module controls the loading/unloading of
the compressor, monitors its status such as “Ready”
and “On-load” and is connected to the master via a
serial link. See chapter 15.14.
VS
VS
VS
VS
