EVCO c-pro mega RACK - Manual (Page 78)

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL
Page 78
Switch off : C12 . … C4 . C3 . C2 . C1
3) FIFO + time of operation
This type of rotation functions by considering the number of operating hours for each compressor.
Startup will switch on the compressor with the least operating hours, while shut down will switch
off the compressor with the most operating hours.
In the case where a selection must be made between compressors with the same number of hours,
then a FIFO rotation is implemented, so as to thus guarantee rotation of the configured compressors.
The same rules described previously are also valid for FIFO rotation.
Example 1
Switch on : C1(3 hours) . C2(3 hours) . C3(3 hours) . C4(3 hours)
Switch off : C1(3 hours) . C2(3 hours) . C3(3 hours) . C4(3 hours)
Example 2
Switch on : C1(1 hour) . C2(3 hours) . C3(3 hours) . C4(5 hours)
Switch off : C4(5 hours) . C2(3 hours) . C3(3 hours) . C1(1 hour)
Time based rotation seeks to balance the number of operating hours of the compressors present in
the system.
4) LIFO + time of operation
This type of rotation functions by considering the number of operating hours for each compressor.
Startup will switch on the compressor with the least operating hours, while shut down will switch
off the compressor with the most operating hours.
In the case where a selection must be made between compressors with the same number of hours,
then a LIFO rotation is implemented, so as to thus guarantee rotation of the configured
compressors.
Example 1
Switch on : C1(3 hours) . C2(3 hours) . C3(3 hours) . C4(3 hours)
Switch off : C4(3 hours) . C3(3 hours) . C2(3 hours) . C1(3 hours)
Example 2
Switch on : C1(1 hour) . C2(3 hours) . C3(3 hours) . C4(5 hours)
Switch off : C4(5 hours) . C3(3 hours) . C2(3 hours) . C1(1 hour)
Time based rotation seeks to balance the number of operating hours of the compressors present in
the system.
Please note. If the type of rotation is changed with the machine running, it is necessary to switch
the machine off and then on in order to avoid malfunctions.
6.4.4 Increment management
Incrementing a compressor means distributing the overall load over several increments, thus
improving operation and reducing the number of startup operations, in order to prolong the lifespan
of the mechanical device.
The program is capable of managing up to 12 incremented compressors (with appropriate
limitations), or up to 12 non-incremented compressors.