Carel Heos, User Manual

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20
ENG
Heos +0300078EN - rel. 1.6 - 23.11.2017
Cold room maintenance
The logic is the same as the door switch, and activation is as follows:
•
Door opens: stop control in the same way as the door switch.
•
Door closed again: ignored
•
Door opened again: control resumes, same as when closing the door
switch
•
Door closed again: ignored
Showcase cleaning
When the contact closes, control stops, while the lights and probe alarms
are enabled. When the contact opens again, or after a maximum time
(parameter bA1 - screen Df01), control resumes.
On screen Df02, a second type of logic can be set for the digital input. If
set to Y, it works as described above. If set to N, the function is activated
by pressing the button, and is deactivated after the timeout set for Df01.
Inverter alarm
This has the same functions as the remote alarm, and is connected to the
inverter alarm output.
Lights
Lights On/Off , if the lights are controlled by time band, or day/night
status, this function has higher priority.
6.3 Analogue outputs
Heos features three analogue outputs (0-10 V), which can be associated
with the following functions.
List of selectable functions
Par. Description
/LA EC evaporator fans
/Lb Anti-sweat heaters
/Lc Water control valves (not enabled)
/Ld Condenser pump (not enabled)
/LE Auxiliary output (not enabled)
/LF Water-cooled condenser output
/LG Air-cooled condenser output
6.4 Digital outputs
Heos features eight digital outputs, confi gurable as shown in the
following table.
List of selectable functions
Par. Description
/EA Fans 1 (default DO6)
/Eb Fans 2
/EC Lights (default DO7)
/Ed Defrost heaters (default DO8)
/EE Alarms
/EF Auxiliary output
/EG Anti-sweat heaters
/EM Liquid injection solenoid
/EN Curtain contact
/Eo ON/OFF Compressor
/Er Inverter valve output
/ES Fan/condenser output
/Et Compressor output 1
/Eu Compressor output 2
/EV Compressor output 3
/EW Compressor output 4
/EX Compressor output 5
/EY Dual temperature valve output
Normally de-energised/normally energised alarm
A relay confi gured as an alarm may be set as:
normally de-energised: the relay is energised when an alarm occurs;
normally energised: the relay is de-energised when an alarm occurs.
Note: operation with the relay de-energised when an alarm occurs
ensures maximum safety when the alarm is due to a power failure or
disconnection of the power cables.
6.5 Control
There are various modes for controlling air temperature for the
conservation of foodstuff s in cold rooms and showcases. The following
fi gure shows the position of the intake probe Sr and the outlet probe
Sm. The virtual probe Sv is a weighted average of these two, based on
parameter /4, according to the following formula:
Sv =
Sm • (100 - /4) + Sr • (/4)
100
Par. Description Def U.M. Min Max
/4 Virtual probe composition
(weighted average Sr, Sm) 0 % 0 100
For example if /4=50, Sv=(Sm+Sr)/2 represents the average value of the air
temperature.
Example: vertical showcase
Waterloop
Sv = (Sm+Sr)/2
Sm
Sr
Fig. 6.a
Key
Sm Outlet probe Sr Intake probe Sv Virtual probe