Emerson Vilter MicroVission - Configuring Sequencing Table on Compressor; Walk-Through of Sequencing Loading and Unloading

D − 6
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3
Appendix D • Compressor Sequencing Setup
Conguring Sequencing Table on
Compressor
Compressor name in Equipment will be updated when
new device is added from Device List page 3.
Assign Priority for the compressor.
Auto sequencing can be started (from the any one of
the compressors) by selecting the green Unit Start but-
ton and pressing the “Auto Seq” button. Before Starting
Auto Sequence other compressors should be started in
Auto Seq Standby by selecting the green Unit Start but-
ton and pressing the “Seq Stand-By” button.
Walk-Through of Sequencing Loading and
Unloading
(Assume Suction Pressure Control)
Example:
Pressure control setpoints for setpoint 22 psig,
Comp Sequencing Control Mode – Suction Pressure
Suction pressure control setpoint = 22 psig
Start Offset = 6 psig
Start Timer = 90 sec
Stop Offset = 6 psig
Stop Timer = 90 sec
Compressor Control screen settings:
Load Offset = 2 psig
Load Interval = 20 sec
Unload Offset = 2 psig
Unload Interval = 20 sec
Priority settings:
Compressor Sequencing Table on page 1 has below
settings.
Sequencing Loading mode operates in the following
way:
Once table is congured Comp2 and Comp3 are placed
in auto seq stand-by mode by pressing “Seq Stand-By”
button from start menu, then start sequencing by press-
ing “Auto Seq” button in Comp1. Refer Figure D-4.
Equipment IP Address Priority Status
Comp1 192.168.1.95 1
Comp2 192.168.1.96 2
Comp3 192.168.1.97 3
Figure D-4. Compressor(s) Started in Sequencing