1592001850 XC660D GB r3.4 04.09.2017.docx XC660D
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3. General description
The XC660D is designed to manage both compressors and fans in a condensing system such as
a pack. The compressors can be scroll or Stream, simple or multistage.
It’s possible to manage up to 2 suction circuits with a common condenser.
Control is by means of a neutral zone and is based on the pressure or temperature sensed in the
LP suction (compressors) and HP (condenser) circuits. A special algorithm
balances the run hours
of the compressors to distribute the work load uniformly.
The controllers can convert both LP and HP pressures and displays them as temperatures.
The front panel offers complete information on the system’s status by displaying the suction and
condenser pressure (temperatures), the status of the loads, possible alarms or maintenance
conditions.
Each load has its own alarm input that is able to stop it when activated. To guarantee the total
system’s safety, there are also two inputs for low and high pressure switches: when these are
activated, the system is stopped.
By means of the HOT KEY the controller can be easy programmed at power on.
The controller can be connected to the X-WEB, controlling and monitoring system, thanks to the
RS485 serial output, using the standard ModBus RTU protocol.
4. PROBES RELATED TO THE XC660D
4.1 PP07, PP11, PP30 PP50: 4÷20mA pressure transducers
NAME
CABLE LENGTH
RANGE
DIXELL CODE
PP07
2,0MT
-0,5+7bar rel FE
BE009302 00
PP11
2,0MT
-0,5+7bar rel FE
BE009302 07
PP30
2,0MT
0+30 bar rel FE
BE009302 04
PP50
2,0MT
0+50 bar rel FE
BE009002 05
4.2 NP4-67: pipe mounting temperature probe
The NP4-67
temperature probe
can be used on the discharge line
to
monitor
the
discharge
temperature of the Digital Scroll
compressor.
NP4-67
1.5MT NTC probe
Measurement range: -40+110°C,
Cable 1,5mt
Code BN609001 52
Summary of Contents for XC660D
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