Digital Outputs - Carel ir33+ small wide User Manual

ENG
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 off , 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 ope- Algorithm Description
ning the door
0 off normal
on extended open-close-open-close
1 off extended open-close-open-close
on normal
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 ope- Algorithm Description
ning the door
0 off normal
on extended open-close-open-close
1 off normal
on normal
See the table at the start of this paragraph for details on the activation/
deactivation logic.
14 = Door switch with fan off 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
c0 Compressor, fan and AUX start delay at power
on
c1 Minimum time between successive compres-
sor starts
c2 Minimum compressor off time
c3 Minimum compressor on time
ir33plus +0300028EN rel. 1.1 - 05.05.2017
open-close
open-close
Tab. 5.j
open-close
open-close
open-close
Tab. 5.k
Def Min Max UOM
0 0 15 min
0 0 15 min
0 0 15 min
0 0 15 min
Tab. 5.l
•
c0: when the controller is powered on, the compressor, evaporator
fans and auxiliary relay in neutral zone control ('H1'=11 or 'H5'=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
c11 Second compressor start delay
•
c11 defi nes the activation delay between the fi rst and second
compressor (or between the fi rst and the second compressor step).
ON
STEP1
OFF
ON
STEP2
OFF
POWER_ON
c0
Key
Step1 Compressor step 1
Step2 Compressor step 2
t time
Functions assigned to AUX1/AUX2
Outputs AUX1 and AUX2 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
H1 AUX1 output confi guration
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
H5 AUX2 output confi guration
See H1
28
Def Min Max UOM
4 0 250 s
c1
c3 c2
c11
Fig. 5.h
Def Min Max UOM
1 0 13
3 0 13
Tab. 5.m
t
-
-
Tab. 5.n