CompTrol Interface V4.0.x | Issue 21-05-2021 | 1000932 93
Program 10 – direct frequency request with the CompTrol Master
16.5 Analog input
Note
●
When running program 10, also set DIP switch
SW4-3
on the outdoor unit PCB of the FDC
outdoor unit to
ON
(see FDC series Technical Manual).
●
If there is no input voltage, e.g. due to a broken wire or open input, a frequency of 0 Hz is
transferred.
●
Analog input
X3-S
is inactive in program 10.
Schematic diagram:
Compressor frequency control via a bus signal
The diagram below charts the control behavior of one CompTrol Interface expansion module for
actuating an outdoor unit with a maximum frequency
f
max Heating
of 75 Hz. The compressor fre-
quency is controlled by the analog signal and depends on the outdoor unit model set via DIP
switches
S1-5
and
S1-8
. The compressor frequencies
f
min
,
f
max Heating
, and
f
max Cooling
are
permanently set for the outdoor unit in question.
Figure 22: Compressor frequency control via a bus signal
16.6 Digital input assignment in program 10
Digital inputs
X2a-D1, X2a-D2, X2b-D3, X2b-D4, X2c-D5,
and
X2c-D6
are inactive in program 10.
Summary of Contents for CompTrol
Page 125: ......
