the fan set point (
FS P
) temperature. EMS controllers run the evaporator fan, even if the cooler door
is opened, and continues to run the evaporator fan until reaching the set point (
S P
) temperature.
For more information about the parameters used in
evaporator fan management
:
l
See "Fan cycle off (FCF)" on page 74
l
See "Fan cycle on (FCO)" on page 74
l
See "Fan set point (FSP)" on page 69
l
See "Set point (SPC or SPF)" on page 67
5.3
Lights management
In the saving mode, the cooler lights are usually off.
For marketing purposes, light delay (
L d
) can keep the cooler lights on for a short period after the EMS
controller switches to the
saving mode
.
Marketing mode (
Ar
) can keep the lights on for the duration of the
saving mode
.
For more information about the parameters used in
lights management
:
l
See "Marketing mode (Ar)" on page 78
l
See "Lights delay (Ld)" on page 72
5.4
Alarms
For alarm conditions, the EMS controller displays the appropriate alarm code and, optionally, sounds
an alarm buzzer.
Buzzer enable (
b0
) defines whether to sound a warning buzzer for alarm conditions.
Buzzer duration (
b1
) defines the duration of the buzzer for alarm conditions.
Note:
l
For door open alarms, the buzzer sounds regardless of the buzzer enable (
b0
) setting.
For more information about the parameters used in
alarms
:
l
See "Buzzer enable (b0)" on page 75
l
See "Buzzer duration (b1)" on page 76
5.5
Compressor management
EMS controllers manage the compressor to maintain the product temperature between the set point
(
S P
) temperature and the set point (
S P
) plus differential (
dI F
) temperature in the
ready mode
or
between the saving set point (
S S P
) temperature and the saving set point (
S S P
) plus the saving dif-
ferential (
S d
) temperature in the saving mode.
To ensure that the pressures within the refrigeration system have time to equalize during com-
pressor off-cycles, the compressor rest time (
rt
) defines the minimum time that the compressor can
be switched off.
Compressor manufacturers usually recommend a minimum compressor rest time.
The compressor rest time (
rt
) helps to avoid the following:
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