© Danfoss | DCS (ms) | 2020.01
4 | AN19798642980802-000701
ENGLISH
Startup
When voltage is applied for the first time
the display on the ICAD (fig. 2) will alternate
between showing: Actual opening degree and
A1
.
A1
indicates an alarm which corresponds
to: No valve selected. See
Alarms
for further
information.
Please observe that when the correct valve is
entered in parameter
¡26
(see
Parameter list
)
an automatic calibration is carried out. I.e it is
not necessary to carry out another calibration in
parameter
¡05
.
During calibration “CA” will be flashing in the
display.
The ICAD will briefly display “CS” every time the
valve is going to close and reach 0%.
General Operation
ICAD is equipped with an MMI (Man Machine
Interface) from which it is possible to see and
change different parameters to adapt the ICAD
and the corresponding valve to the actual
refrigeration application. The operation of
parameters is done by means of the integrated
ICAD MMI (fig. 2) and consists of:
1
2
3
Down arrow push button (fig. 2, pos. 1)
decreases parameter number by 1 for each
activation
Enter push button (fig. 2, pos. 2)
Gives access to the
Parameter list
by
keeping the push button activated for 2
seconds. A
Parameter list
is shown below
(parameter
¡08
):
Gives access to change a value once the
Parameter list
has been accessed.
Acknowledge and save change of value of
a parameter.
To exit from the
Parameter list
and return
to the display of Opening Degree (OD) keep
the push button activated for 2 seconds.
Up arrow push button (fig. 2, pos. 3)
Increases parameter number by 1 for each
activation
Display (fig. 2, pos. 4)
Normally the Opening Degree (OD)
0 - 100 % of the valve is displayed. No
activation of push buttons for 20 seconds
means that the display will always show
OD. Like below:
Displays the parameter
Displays the actual value of a parameter.
Displays the status by means of text
(fig. 2, pos. 4).
Mod
represents that ICAD is positioning the
ICM, ICMTS or CVE valve according to an
analog input signal (Current or Voltage).
Low
represents that ICAD is operating the
ICM valve like an ON/OFF solenoid valve
with low speed according to a digital input
signal.
Med
represents that ICAD is operating the
ICM valve like an ON/OFF solenoid valve
with medium speed according to a digital
input signal.
Description
ICAD alarm
text
Definition of
event
Comments
No Valve type selected
A1
Alarm ON
At start-up
A1
will be displayed
Controller fault
A2
Alarm ON
Internal fault inside electronics.
Carry out:
1) Power OFF and Power ON
If A2 still active.
2) Make a Reset to factory setting
If A2 still active. Return ICAD to Danfoss
AI input error
A3
Alarm ON
Not active if
¡01
= 2, or
¡02
= 2
When
¡03
= 1 and AI A > 22 mA
When
¡03
= 2 and AI A > 22 mA
or AI A < 2 mA
When
¡03
= 3 and AI A > 12 V
When
¡03
= 4 and AI A > 12 V
or AI A < 1 V
Low voltage of fail safe
Supply
A4
Alarm ON
If 5 V < fail safe supply
<18 V. Enabled by
¡08
Check supply to ICAD
A5
Alarm ON
If supply voltage < 18 V
Calibration extended
failed
A6
Alarm ON
Check valve type selected.
Check presence of foreign body internally in valve
Internal temperature
alarm
A7
Alarm ON
Temperature for stepper motor component too high.
Ventilate/lower ambient ICAD temperature
A8
Alarm ON
Temperature for stepper motor component too high.
Ventilate/lower ambient ICAD temperature.
POM mode
(Preventive Operational
Mode)
A9
See
¡18
and
¡21
Only active if
¡16
= 1
If ICAD meets too high torque from ICM valve
(increased friction/sticking surfaces) ICAD automatic
goes into POM mode to overcome lost step.
(See
¡18
and
¡21
)
High
represents that ICAD is operating the
ICM valve like an ON/OFF solenoid valve
with high speed according to a digital input
signal. Like below:
Alarms
ICAD can handle and display different alarms.
If an alarm has been detected the display at
ICAD (fig. 2) will alternate between showing
actual alarm and present Opening Degree.
If more than one alarm is active at the same
time only the alarm with the highest priority
will appear.
A1
has the highest priority,
A9
the
lowest.
Any active alarm will activate the Common
Digital Alarm output (Normally Open).
All alarms will automatically reset them-selves
when they physically disappear.
Old alarms (alarms that have been active, but
have physically disappeared again) can be found
in parameter
¡11
.
Disposal Note
The Product contains
electrical components
And may not be
disposed together
with domestic waste.
Equipment must be separate collected with
Electrical and Electronic waste. According to
Local and currently valid legislation.
