SF: P-area
SF: I-time
EF: P-area
EF: I-time
750Pa
8 s
750Pa
8 s
50 ... 9000 Pa
5 ... 100 s
50 ... 9000 Pa
5 ... 100 s
AH FAN CONTROLLED ACTUATOR SELECTION
EXHAUST CONTROLLED AH UNIT TUNING VALUES
EH-105 pressure controlled AH units have PI control.
The supply air and exhaust air units have their own tuning values.
Range:
Factory setting:
Setting the maximum change speed of the control message.
The minimum amount of time during which the message going to the
AC freq. converter can change 0…10 V. (at start-up, the AH unit is
immediately driven to a voltage equivalent to the minimum output).
AH-fans
No ContradAlrm
ContradictAlrm
Alarm delay
s
35
EH-105 gives a contradiction alarm in the following situations: Running information
connected to On/Off inputs is not received, even though the controller drives the AH unit to
the output in question.
Running information is received even though controls are not given to the AH unit.
Attention! Pump contradiction alarms are activated by connecting their running
information to the controller by On/Off inputs.
The controller does not give SF and EF contradiction alarms based on running
information. The controller only uses fan running information to change AH unit control
from idle-time to running time control.
Contradiction alarm delay. Running information must appear during alarm delay or the
controller will give a contradiction alarm. The setting rage of alarm delay is 0…200s. The
factory setting is 35 s.
Contradiction alarms for SF and EF fans
Select
Mainten.mode
Actuator alarm
Select
Mainten.mode
AHU stop alarm
Instr.
p.23
AHU start after
alarm is deactiv
Contr.acknowl.
Also remoteAck
Alarm selections are made here. Select when the AH unit can be restarted if the alarm
has shut down the AH unit and the cause for the alarm has been eliminated. Select
whether the alarm is acknowledged by the controller or whether it can be remotely
acknowledged.
The AH unit can start up if the cause for the alarm has been eliminated and the alarm
has been acknowledged by the controller.
Alarm acknowledgement sent from the monitor or via a GSM text message can also
start up the AH unit if the cause for the alarm has been eliminated. GSM
acknowledgement takes place by sending the alarm that has been received by the
mobile phone back to the controller as a text message.
AH start-up when the alarm disappears:
Alarm definitions: Actuators AH start-up
ContradictAlrm
No ContradAlrm
Contr.acknowl.
Also remoteAck
EH-105
AH CONTROLS
EH-105
Tuning values
Actuator selection
32
Tuning values
SF:
P-area
Pa
S
I-time
s
EF P-area
Pa
EF I-time
s
F:
:
:
750
8
750
8
C
Actuator
SF:0-10V/
s
EF:0-10V/
s
80
80
C
Cannot be selected in AC freq. converter controlled units
Instr.
p.23
When the controller stops/starts up the AH unit, start-up
information may leave/come after a delay because of e.g., the
ramp of an AC frequency converter controlled unit. The
controller waits the length of the alarm delay time for start-up
information to leave/come. If there is a contradiction between
control and start-up information for the entire set delay time, a
contradiction alarm goes off.
Alarm delay
