S-Klima CompTrol, Техническое руководство

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74 CompTrol Interface V4.0.x | Issue 21-05-2021 | 1000932
Program 9 – direct frequency request with cascading
15 Program 9 – direct frequency request with cascading
15.1 Description
The compressor frequencies of two outdoor units can be adjusted via an analog signal from an
external controller. Direct frequency request is available with the following unit series from
Mitsubishi Heavy Industries:
●
FDS series
●
S series
Direct frequency request with cascading is not available with KX and SX series air conditioning
units.
There are two options for using cascading:
●
Cascading without signal overlap
●
Cascading with signal overlap
For program 9, two CompTrol Interface expansion modules are required. The analog input X3-S
on each of the CompTrol Interfaces requires an isolation amplifier. The isolation amplifiers are not
included and must be provided by the customer.
In addition, the digital inputs can be used to switch on Cooling or Heating modes and to adjust the
fan speed.
The functions of forced mode and inversion of digital outputs can optionally be used.
The indoor unit can be switched on or off using remote ON/OFF.
The operating, compressor, heating, or defrost signals are emitted via the digital outputs. In the
event of a system error, an alarm signal is emitted via a digital output.
15.2 Configuring the CompTrol Interface for program 9
IMPORTANT
●
If you switch from program 8, 9, or 10 to programs 0 and 2 to 7 without cutting the power first,
the control behavior of the air conditioning system will be adversely affected.
●
Disconnect all components of the air conditioning system from the electrical supply before
switching from program 8, 9, or 10 to programs 0 and 2 to 7. Then restart all the components
of the air conditioning system (indoor units, outdoor units, CompTrol Interface, wired remote
control, heat exchanger connection module, etc.).
Note
●
Only set DIP switches when they are disconnected from the electrical supply. Changed set -
tings only reliably become effective after a system restart. An exception here are DIP switches
S2-7
and
S2-8
, which govern the behavior of the 7-segment display. These DIP switches for
display behavior can also be set during ongoing operation.
●
When reading the current DIP switch positions, bear in mind the horizontal installation posi -
tion of the CompTrol Interface! The ON switch setting is the one closest to the center of the
expansion module.
●
Set inoperative DIP switches to OFF .