2 | RS8EU702 |
Introduction
Application
Complete refrigeration appliance control with great exibility to
adapt to all types of refrigeration appliances and cold storage
rooms.
• For cooling with brine
• For use with a thermostatic expansion valve.
Advantages
• Energy optimisation of the whole refrigeration appliance
• One controller for several dierent refrigeration appliances
• Integrated display at the front of the controller
• Quick set-up with predened settings
• Built-in data communication
• Built-in clock function with power reserve
Principle
The temperature in the appliance is registered by one or two
temperature sensors which are located in the air ow before the
evaporator (S3) or after the evaporator (S4) respectively. A setting
for thermostat, alarm thermostat and display reading determines
the inuence the two sensor values should have for each indi-
vidual function.
In addition product sensor S6, which can be optionally placed in
the appliance, can be used to register the temperature near the
required product in a certain place within the appliance.
The temperature of the evaporator is registered with the S5 sensor
which can be used as a defrosting sensor.
In addition to the output for the solenoid valve, the controller has
5 relay outputs which are dened by the use selected – the indi-
vidual usage options are described in detail on page 12.
Functions
• Day/night thermostat with ON/OFF or modulating control
• Product sensor S6 with separate alarm limits
• Switch between thermostat settings via digital input
• Start of defrost via schedule, digital input or network
• Natural, electric or hot gas defrost
• Stop of defrost on time and/or temperature
• Coordination of defrost across several controls
• Pulsing of fans when thermostat is satised
• Case cleaning function for documentation of HACCP procedure
• Rail heat control via day/night load or dew point
• Door function
• Control of two compressors
• Control of night blinds
• Light control
• Heat thermostat
• Factory calibration that will guarantee a better measuring accu-
racy than stated in the standard EN 441-13 without subsequent
calibration (Pt 1000 ohm sensor)
• Integrated MODBUS communication with the option of mount-
ing a LonWorks, DANBUSS or Ethernet communication card
Appliance examples
Contents
Introduction ....................................................................................................... 2
Operation ............................................................................................................ 4
Applications .....................................................................................................12
Survey of functions ........................................................................................15
Operation ..........................................................................................................26
Menu survey .....................................................................................................28
Connections .....................................................................................................32
Data .....................................................................................................................34
Ordering ............................................................................................................35
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