EMKO EPC-3 - Alarm Types and Differential Alarm Logic; Alarm Type List; Differential Alarm Logic

5.4.11.2 ALARM TYPES
ALARM SET VALUES
ABSOLUTE MIN: 0.0°C
ABSOLUTE MAX: 99.0°C
DIFFERENTIAL: 0.0°C
TYPE :NONLATCH
ALARM STATUS 1
ABSOLUTE MIN :OFF
ABSOLUTE MAX :OFF
DIFFERENTIAL :OFF
ALARM1 :OFF
NEGATIVE PRESSURE:OFF
HUMIDITY SENSOR :OFF
NO ENOUGH FEED :OFF
1. ABSOLUTE MIN alarm:
If Temperature(NOTE1) is lower than ALARM SET VALUES ABSOLUTE MIN
value for more than a minute ALARM STATUS 1 ABSOLUTE MIN is switched ON.
EPC has 10 different alarm types. These are listed below;
1- ABSOLUTE MIN alarm,
2- ABSOLUTE MAX alarm,
3- DIFFERENTIAL alarm,
4- ALARM1,
5- NEGATIVE PRESSURE alarm,
6- HUMIDITY SENSOR alarm,
7- NO ENOUGH FEED alarm,
8- ROOM1 OFL alarm,
9- ROOM2 OFL alarm,
10- OUTSIDE OFL alarm.
NOTE1:
If VENTIL. PARAMETERS PAGE SENSOR parameter is ROOM1;
Temperature = ROOM1 sensor’s temperature,
If VENTIL. PARAMETERS PAGE SENSOR parameter is ROOM2;
Temperature = ROOM2 sensor’s temperature,
If VENTIL. PARAMETERS PAGE SENSOR parameter is ROOM1&2;
Temperature =( ROOM1 sensor’s temperature + ROOM2 sensor’s temperature) / 2.
NOTE2:
If curve is enabled;
Settemp= HOUSE TEMP from curve.
Min.Vent= MIN. VENT from curve.
Max.Vent=MAX. VENT from curve.
If curve is disabled;
Settemp= SET VALUES PAGE TEMP.HOUSE.
Min.Vent= SET VALUES PAGE VENT. MIN.
Max.Vent= SET VALUES PAGE VENT. MAX.
2. ABSOLUTE MAX alarm:
If Temperature(NOTE1) is higher than ALARM SET VALUES ABSOLUTE MAX
value for more than a minute ALARM STATUS 1 ABSOLUTE MAX is
switched ON.
3. DIFFERENTIAL alarm:
First situation;
If outside temperature is lower than Settemp(NOTE2) plus SET VENTILATION PAGE VENTILATION8
and if Temperature (NOTE1) is higher than Settemp(NOTE2) plus SET VENTILATION PAGE VENTILATION8
plus ALARM SET VALUES DIFFERENTIAL for more than a minute ALARM STATUS 1
DIFFERENTIAL alarm is switched ON.
ON
OFF
Process Value [°C]
(NOTE1)
Settemp
(NOTE2)
DIFFERENTIAL
ALARM
SET VENTILATION PAGE
VENTILATION8
ALARM SET VALUES
DIFFERENTIAL
ALARM SET VALUES
DIFFERENTIAL
Outside
temp.
ON
OFF
Process Value [°C]
(NOTE1)
Settemp
(NOTE2)
DIFFERENTIAL
ALARM
SET VENTILATION PAGE
VENTILATION8
ALARM SET VALUES
DIFFERENTIAL
ALARM SET VALUES
DIFFERENTIAL
Outside
temp.
(Outside temp.<=ALARM SET VALUES ABSOLUTE MAX and
Second situation:
If the outside temperature is lower than or equal ALARM SET VALUES PAGE ABSOLUTE MAX and
if Temperature (NOTE1) is higher than the outside temperature plus
ALARM SET VALUES PAGE DIFFERENTIAL for more than a minute
ALARM STATUS PAGE 1 DIFFERENTIAL alarm is switched ON.
(Outside temp.<=Temperature (NOTE1) + SET VENTILATION PAGE VENTILATION8)
Outside temp.>Temperature (NOTE1) + SET VENTILATION PAGE
VENTILATION8)
ALARM SET VALUES ABSOLUTE MAX
ALARM STATUS 2
ROOM1 OFL :OFF
ROOM2 OFL :OFF
OUTSIDE OFL :OFF
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