36 LonTalk Communication Interface • ACC-SVN100A-EN
Network Variable and Configuration Property Definitions
This variable is used to relay information about which compressors on the chiller are
running.
nvoCurrentX
Current per line—compressor X,* UNVT_3phase_current
nvoCurrentA
nvoCurrentB
nvoCurrentC
nvoCurrentD
nvoCurrentE
nvoCurrentF
These network variables provides a measurement of the three-line currents at
compressor X (*where X = A, B, C, D, E and/or F, depending on the network variable, in
amperes and/or in %RLA). There are separate network variables for each compressor.
Structure definition
Bit position Description
Bit 0 Compressor A exists (1 = Yes)
Bit 1 Compressor B exists (1 = Yes)
Bit 2 Compressor C exists (1 = Yes)
Bit 3 Compressor D exists (1 = Yes)
Bit 4 Compressor E exists (1 = Yes)
Bit 5 Compressor F exists (1 = Yes)
Bits 6–7 Not used
Bit 8 Compressor A running (1 = On)
Bit 9 Compressor B running (1 = On)
Bit 10 Compressor C running (1 = On)
Bit 11 Compressor D running (1 = On)
Bit 12 Compressor E running (1 = On)
Bit 13 Compressor F running (1 = On)
Bits 14–15(LSB) Not used
Structure definition
Field in structure Description
SNVT_amp_ac L1 current (Amps)—compressor X
SNVT_amp_ac L2 current (Amps)—compressor X
SNVT_amp_ac L3 current (Amps)—compressor X
SNVT_lev_percent L1 current (%RLA)—compressor X
SNVT_lev_percent L2 current (%RLA)—compressor X
SNVT_lev_percent L3 current (%RLA)—compressor X
Note: X = A, B, C, D, E, and/or F, depending on the network variable.
