Carel easy User Manual

29
ENG
easy/easy compact/easy split +030220791 - rel. 3.2 - 13.07.2010
4.12 Rapid parameter set selection (EZY)
The easy, easy compact and easy split controllers feature the EZY
parameter (on the compact models, this is called EY), which is used to
quickly choose a list of parameters, with corresponding values, for the
control of the refrigeration system.
By setting parameter EZY=1, 2, 3, 4, one of the 4 lists made up of a
maximum of 25 parameters (for the lists see par. “5.9 Table of EZY
parameter sets” page 36). The values in the chosen list overwrite the
corresponding operating parameters.
Note:
• to restore the selected rapid parameter set at any time, turn the
controller o and on again, while holding SET. The display shows
“CE” to indicate that the selected rapid set (EZY= 1, 2, 3, 4) has again
overwritten the operating parameters, thus restoring the original set
of parameters;
• to restore all the parameters and return to the original default values
(factory settings), turn the controller o and on again while holding
DOWN and SET, until the display shows “CF”. Use this procedure with
extreme care, as it may compromise the fundamental control settings;
• EZY=0 brings no change;
• on the thermometer models (PJEZM*), the EZY parameter (EY for the
easy compact models) is not featured.
4.13 Other settings
The operation of the device is completed by a series of additional
functions, such as the assignment of a supervisor serial network address,
the con guration of the AUX relay, the enabling of the keypad and the
buzzer.
H0: serial address
Assigns the instrument an identi cation address for connecting to a
supervisory or telemaintenance system (def. H0=1).
H1: AUX output con guration
Establishes the operating logic of the auxiliary relay; in particular de nes
whether it is used as an alarm output or as an auxiliary output linked to
the digital input. On easy split models there are also the light and second
compressor outputs, with or without rotation.
H1= 0 no function associated with the output
H1=1 alarm output: norm. energised (relay de-energised with
alarm)
H1=2 alarm output: norm. de-energised (relay energised with
alarm)
H1=3 AUX output related to Dig. in.
- easy, easy compact : A4 = [6/7/8];
- easy split: A4 = [6/7/8/10/11];
Dig. in. OPEN = AUX de-energised
Dig. in. CLOSED = AUX energised + LED “AUX” display”
H1=4 light output (easy split only): the light can be switched on
pressing the corresponding button from the keypad or
when opening the door if the door switch is activated with
light management (see parameter Ado)
H1=5 second compressor output in parallel (easy split only):
the output is activated a few seconds after the activation of
the  rst compressor (delay = c11). The second compressor
observes the protection times c0, c1, c2, c3 for the  rst
compressor;
H1=6 second compressor output with two step control without
rotation (easy split only): the second compressor is called
when the temperature measured by the room probe
deviates by more than half the di erential (rd/2) from the
set point;
ON
OFF
ON
OFF
CP1
t
t
CP2
AMB_T
t
St
St+rd
St+rd/2
St
CP1
t
ON
OFF
rd/2 rd/2
CP2
ON
OFF
D
D
Fig. 4.o
Key
AMB_T Control probe CP2 Compressor 2
CP1 Compressor 1 rd Di erential
t time St Set point
H1=7 second compressor output with two step control with
rotation (easy split only). The roles of main and secondary
compressor alternate following each shutdown, so that
when next started (stopped) the output not involved in
the previous start (stop). will be activated (deactivated).
Both the compressors must observe the protection times
c0, c1, c2 and c3.
Examples of operation:
ON
OFF
REQ2
t
t
CP1
CP2
REQ1
t
t
ON
OFF
ON
OFF
OFF
ON
example 1
Fig. 4.p

Carel easy Specifications

General

Brand	Carel
Model	easy
Category	Thermostat
Language	English