A-alarms are always sent immediately, e.g., as a text message via a GSM phone or via
the bus to the monitor. In addition, a local alarm can be received via the alarm relay
(e.g., a buzzer) Class A alarms are listed below.
.
EH-105
EH-105 has very diverse alarm functions for special situations. The causes for
the alarms depend on what functions have been taken into use. In the event of an
alarm, the controller gives an alarm and a message appears on the display. The
alarm relay contact also closes. The alarms are grouped into classes A and B
depending on whether the alarm is sent as a text message immediately or
whether it is timed.
Select
Measurements
AHU oper.contr.
Settings
Supply air info
AHU output info
Connection info
ControlOperMode
Clock functions
Alarms
Language/kieli
Alarms
Alarm history
B-alarm transf.
ON
_ _
OFF
_ _
08:00
MoTuWeThFr
16:00
MoTuWeThFr
Risk of Freez!
06.02.02 16:00
Meas. 5
7°C
Rad. ret.wat
Filter alarm!
02.12.01 20:00
Meas. 10
Supply filt.PDS
The controller sends B alarms to a GSM phone according to the clock
program made here. The clock program principle is outlined on pages
14-15.
In the example above, B alarms are transferred during work-
days between 8:00 - 16:00.
Note! In the event of a B alarm, the alarm
relay can not be active if SMS transfer has been blocked.
Overheating alarm
Temp.relay alarm
ALARMS
Alarm transfer on
Alarm transfer off
B-alarm transf.
ALARM DISPLAY:
Risk of Freez!
31.07.02 16:20
Meas. 5
6°C
Rad. ret.wat
Type of alarm
Alarm information measurement line and measurement
information at the time of the alarm
Name of alarm
Freezing risk!
Radiator ret. wat
Radiator return water temperature is below the ”Freeze risk”
value (see p. 37). The controller shuts down the AH unit.
Supply or exhaust air temperature is above the ”Fire risk”
value (see p. 24). The controller shuts down the AH unit.
AH unit heating's circulating pump's temperature relay
alarm. The controller shuts down the AH unit.
STOP command for the AH unit from the external
emergency STOP switch connected to the controller.
Smoke alarm information (open switch) shuts down the AH
unit (electrically heated AH units do not have post ventilati-
on). In the event of an alarm the dampers remain in the
selected position.
Fire risk!
Supply temperat.
Exhaust temp.
Heating pump
Pump alarm
Heating pump
Running information is not received from the AH unit heating's
circulating pump. The controller shuts down the AH unit. The
pump alarm is not given and the AH unit is not shut down if
the controller has shut down the heating pump.
When the
controller is starting the pump, pump alarm can start 10
s after the control command at earliest
Electric heater overheating protection gives an alarm (close
switch). The controller shuts down the AH unit. Possible
acknowledgement also from the electric heater.
Electric heater
Smoke alarm
Sensor fault
Alarm!
Alarm!
Radiator ret.wat
Emergency- STOP!
Err appears in place of the setting to indicate a sensor
fault.
In the event of a radiator's return water sensor fault
alarm the controller shuts down the AH unit.
"Supply temp” sensor fault. The controller shuts down the
AH unit.
A- ALARMS
Time alarm was given
Hint !
Hint !
The alarm history
contains the last 10 alarms: the
time the alarm was given, the
type of alarm, the measurement
channel and the measurement
value at the time of the alarm.
Alarm name
:
Alarm type:
Explanation:
R1 R2
16
Supply temperat.
A- ALARMS
Pressure alarm!
Alarm!
AH-networkWater
ElHeatEmrgS
Alarm indicating positive or negative water pressure in the
AH heating network.
The alarm shuts down the AH unit when the electric heater
emergency protection has been triggered.
R3
