3.10 INTEGRAL SEQUENCING
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| Lead Compressor | |||||
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| 1 0 0 |
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| Off | |||||
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| P S I |
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| Total Compressors | ||||||||||
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| Ready To Start |
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| 2 |
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| STATUS |
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| MAIN MENU |
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| SELECT |
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Integral Sequencing is set up using the INTEGRAL SEQUENCING screen. A description of integral is in section 7.0. The name and value of each of the integral sequencing setpoints as listed in the right hand column can be seen by moving the list up and down using the arrow buttons.
3.10.1Lead Compressor- The choices for this setpoint are On, Off, Always, and Never. On, means the compressor is the lead unit. Off, means the compressor is not the lead unit, but it could become the lead unit. If Always is selected, the compressor is the lead unit and it will not transfer the lead to another compressor. Never, means the compressor is not the lead unit and will never become the lead unit. The operator must set one unit (and only one) to On or Always to start integral sequencing.
3.10.2Total Compressors- This is the total number of compressors in the integral sequence. This setpoint must be set to the same number on each compressor.
3.10.3Compressor Address- This is the address of the compressor in the integral sequence. No two compressors can have the same address. Two compressors with the same address will cause communication failures.
3.10.4Load Delay Time- This is the number of
seconds the lead compressor will wait for the package discharge pressure to start rising after issuing a load command to another compressor. If the package discharge pressure has not started rising at the end of this time period, the lead compressor will load the next compressor in the sequencer.
INTEGRAL SEQUENCING | RANGE | STEP | UNIT | |
Lead Compressor | On/Off/Always/Never |
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Total Compressors | 2 to 4 |
| 1 | |
Compressor Address | 1 to Total Compressors | 1 | ||
Load Delay Time | 10 to 60 |
| 1 | SEC |
Lead Change - Hours | 0 to 750 |
| 1 | HRS |
Lead Change - Day | Sun to Sat, Daily, Week | 1 | DAY | |
| Day, Week End |
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Lead Change - Time | 00:00 to 23:59 |
| 1 | TIME |
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3.10.5Lead Change - Hours- This is the number of hours the compressor will operate as the lead unit. Once a compressor has operated as the lead for this number of hours, it will transfer the lead to the next compressor in the sequence. This setpoint does not apply to a unit where the lead compressor is set to always or never. If this setpoint is set to 0, the next 2 setpoints will determine when the lead is transferred.
3.10.6Lead Change - Day & Lead Change - Time- These two setpoints are used together. If the Lead Change - Hours setpoint is set to 0, these two setpoints will be used to determine when the compressor will transfer the lead to the next compressor in sequence. Lead Change - Day is the day of the week that the compressor will transfer the lead. Lead Change - Time is the time of the day that the compressor will transfer the lead.
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