Tables
A Table stores the parameters under which the compressor system is operating when the Table is selected.
You can make use of up to 6 Tables.
Use the button left of the Table indication to edit its parameters:
Use the Save button to store the set parameters:
A Table can be selected:
• Via Scheduling
• Via a Digital Input (DI2) - when DI2 is set high, a specified Table will be used regardless of Scheduling
The parameters
• PH: High pressure set point of the compressor system
• PL: Low pressure set point of the compressor system
• Pm: Minimum pressure warning level.
• xx: (for instance in the above illustration: "Compressor_1") Compressor xx priority setting
The “Maximum” pressure fault level is set separately from the Table selection.
To explain what the Priority functionality provides, first have a look at Duty level and Rotation event.
What is the Duty Level of a Compressor, what is a Rotation event
At any moment in time, every compressor has a unique Duty level, which – supposing we have 4 compressors – are indicated with "A" to "D".
There:
• A is the first compressor (referred to as “Duty” compressor) to be used
• B is the second one (“Standby” compressor) to be used
• C is the third one (“Second Standby” compressor) to be used
• D is the fourth one (“Third Standby” compressor) to be used
As an example: suppose A and B are in use and the air demand is rising to a level where an extra compressor is required to meet the demand, C will be added.
Over time, the allocation of compressors to duty level can change. Refer to such change as a Rotation event.
What are Priorities
These are used to further refine Rotation events.
Each compressor can be assigned a priority, 1 being the highest priority.
Priority level can go from 1 up to the amount of compressors in the system, it can also be set to “Unavailable”.
In that case (Unavailable), the compressor will never be used.
The compressor(s) with a higher priority will always be used before compressor(s) with a lower priority.
As an example, suppose:
• Compressor 1: priority 1
• Compressor 2: priority 1
• Compressor 3: priority 2
• Compressor 4: priority 2
Related Articles
Input Output Configuration
The metacentre Core has 2 digital inputs and 1 digital output. This page allows to configure what the inputs and outputs are used for. DI1 used as Remote Start/Stop Options: • Enabled • Disabled Supposing the is set "Enabled", when the level on the ...Schedules
Use the Save button to store the set parameters: This page allows to set up Schedules. If digital input DI2 is used for Table selection, the Scheduling mechanism is overruled. On the dashboard, the Schedule parameter must be set "On" to allow the ...Metacentre P4: Factsheet
See attachments tab to download.Metacentre V4: Factsheet
See attachments tab to download.Metacentre VX: Factsheet
See attachments tab to download.