Carel SmartCella User Manual

25
ENG
“SmartCella manual” +0300084EN - rel. 1.2 - 28.03.2017
12 = Auxiliary output
Set H1 and/or H5 = 2 to activate the auxiliary output.
See the table at the start of this paragraph for details on the activation/
deactivation logic.
13 = Door switch with compressor and fan o , light not managed
Operation is similar to A4=5, with the diff erence that the light output is
not modifi ed.
Note: the light management algorithm depends on parameter Ado
– “Light management with door switch” (masked parameter accessible
from VPM).
Ado Light when opening the door Algorithm Description
0off normal open-close
on extended open-close-open-close
1off extended open-close-open-close
on normal open-close
Tab. 5.i
If the digital input is selected to not manage the light (A4, A5, A9 =13 or
14), the algorithm is modifi ed as follows:
Ado Light when opening the door Algorithm Description
0off normal open-close
on extended open-close-open-close
1off normal open-close
on normal open-close
Tab. 5.j
See the table at the start of this paragraph for details on the activation/
deactivation logic.
14 = Door switch with fan o only, light not managed
Operation is similar to A4=9, with the diff erence that the light output is
not modifi ed.
Note: the light management algorithm depends on parameter Ado,
as shown in the previous table.
See the table at the start of this paragraph for details on the activation/
deactivation logic.
5.3 Digital outputs
The parameters in question concern the minimum on or off times of the
same output or diff erent outputs, so as to protect the loads and avoid
swings in control.
Important: for the times set to become immediately operational,
the controller needs to be switched off and on again. Otherwise, the
timers will become operational when the controller is next used, when
the internal timer is set.
Relay output protectors (parameters c7,c8,c9)
Par. Description Def Min Max UOM
c0 Compressor, fan and AUX start delay at power
on
0015min
c1 Minimum time between successive
compressor starts
0015min
c2 Minimum compressor off time 0 0 15 min
c3 Minimum compressor on time 0 0 15 min
Tab. 5.k
• c0: when the controller is powered on, the compressor, evaporator
fans and auxiliary relay in neutral zone control (‘H1’=11) are started
after a delay (in minutes) equal to the value assigned to this parameter.
The delay is used to protect the compressor against repeated starts in
the event of frequent power failures;
• c1 defi nes the minimum time between two consecutive starts of the
compressor;
• c2 defi nes the minimum compressor off time;
• c3 defi nes the minimum compressor on time;
Other relay output protectors (parameter c11)
Par. Description Def Min Max UOM
c11 Second compressor start delay 4 0 250 s
Tab. 5.l
• c11 defi nes the activation delay between the fi rst and second
compressor (or between the fi rst and the second compressor step).
c1
ON
OFF
ON
OFF
t
STEP1
STEP2
c3 c2
c11
c0
POWER_ON
Fig. 5.h
Key
Step1 Compressor step 1
Step2 Compressor step 2
t time
Function assigned to AUX
Outputs AUX can be assigned diff erent functions, such as alarm signal,
auxiliary output, light output, pump down valve, condenser fan, reverse
output with neutral zone, second compressor, second compressor with
rotation. For details, see the chapter on control.
Par. Description Def Min Max UOM
H1 AUX output confi guration 1 0 13 -
0 = normally energised alarm
1 = normally de-energised alarm
2 = auxiliary
3 = light
4 = auxiliary evaporator defrost
5 = pump down valve
6 = condenser fan
7 = delayed compressor
8 = auxiliary with deactivation when OFF
9 = light with deactivation when OFF
10 = no function
11 = reverse with neutral zone
12 = second compressor step
13 = second compressor step with rotation
Tab. 5.m

Carel SmartCella Specifications

General

Brand	Carel
Model	SmartCella
Category	Controller
Language	English