JOHNSON CONTROLS
248
FORM 201.23-NM2
ISSUE DATE: 09/25/2020
SECTION 8 - MICROPANEL
VSD DATA KEY
LD10605
VSD
DATA KEY
General
The VSD DATA key provides the user with displays of
VSD temperatures, voltages, currents, and other oper-
ating data. This key has multiple displays, which can
be seen by repeatedly pressing the VSD DATA or the
▲ or ▼ (ARROW) keys. An explanation of each mes-
sage is provided below.
VSD Data Key Operation
The first VSD DATA key press displays the actual VSD
Output Frequency and Command Frequency.
VSD FREQUENCY ACTUAL = XXX.X HZ
COMMAND = XXX.X HZ
The second key press of the VSD DATA key or the ▼
(ARROW) key displays the compressor % FLA and
“calculated” currents in amps for systems 1 and 2. The
“calculated” currents are approximate and some error
can be expected. Also keep in mind that measuring in-
verter PWM current is difficult and meter error can be
significant.
VSD COMP 1 = XXX AMPS = XXX %FLA
COMP 2 = XXX AMPS = XXX %FLA
For 3 and 4 compressor units only, the second key press
will display the following message for systems 1 and 3:
VSD COMP 1 = XXX AMPS = XXX %FLA
COMP 3 = XXX AMPS = XXX %FLA
For 3 and 4 compressor units only, the next key press
displays the compressor %FLA and currents for sys-
tems 2 and 4. 3 compressor units will have the 4th
compressor information blanked out.
VSD COMP 2 = XXX AMPS = XXX %FLA
COMP 4 = XXX AMPS = XXX %FLA
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