11. FINE ADJUSTMENT OF THE
TEMPERATURE MEASUREMENT
If necessary the temperature measurement
in the CMT can be adjusted. Range: -3.0°C to
+3.0°C in steps of 0.1°C.
1. Press the Menu button (
) to access the
menu system.
2. Step using the arrow buttons until "Adj" is
shown on the display.
3. Press Menu-Enter to adjust.
4. The actual compensation and temperature
now starts to flash and it is now possible to
adjust the compensation using the arrow
buttons. Confirm your selection with Enter
(
).
5. Use the arrow buttons to step and confirm
Exit-Menu to terminate and save setting.
12. SETTING TIMER FUNCTION
In the alarm applications (applications 6-9) it is
possible to set a delayed alarm period (0-120
minutes), factory setting: 0 minutes) e.g. in order
to defrost without activating the alarm.
In the application for the gutter thermostat (appli-
cation 10 and 11) an after-running time can be
set (0-120 minutes) to ensure de-icing.
1. Press the Menu button (
) to access the
menu system.
2. Step using the arrow buttons until
is
shown on the display.
3. Press Menu-Enter to adjust.
4. The actual time now starts to flash and it
is now possible to adjust the time. Confirm
your selection with Enter (
).
5. Use the arrow buttons to step and confirm
Exit-Menu to terminate and save setting.
13. DISPLAY EXAMPLE
Relay symbols in the display
The
1
symbol is shown in the display when relay
1 is calling for heating, cooling or is in an alarm
condition (depending on application selected).
The same is valid for the symbol for relay 2.
1 2
Relay 1
Relay 2
Display example application 5
The example below shows a 2-stage heat-
ing/cooling thermostat with set point values
of 23.0°C and 25.0°C. The temperature is now
22.1°C and relay 1 is activated.
The "less than" symbol "<" to the left of set point
value 1 indicates heating function: Relay 1 is
activated when the temperature is less than the
set point value (minus half the hysteresis).
The "greater than" symbol ">" to the left of set
point value 2 indicates cooling function: Relay 2
is activated when the temperature is greater than
the set point value (plus half the hysteresis).
Menu
<
°
C
1
>
Current
temperature
Greater than 25°C
plus ½ hysteres
= cooling activated
Less than 23°C
minus ½ hysteres
= heater activated
Current temperature
is 22,1°C = relay 1
(heating) is activeted
Display example application 8
The example below shows a 2-stage overheating
temperature alarm with alarm set point values of
40.0°C and 60.0°C. The temperature is now 49.1°C
and relay 1 is activated.
The "greater than" symbol ">" to the left of set point
values 1 and 2 indicates function for overheating
alarm: The relays go into alarm condition when the
temperature is more than the respective alarm set
point value (hysteresis is not used in alarm func-
tions).
Reset
Alarm
°
C
1
>
>
Current
temperature
Current temperature
is 49,1°C = relay 1 is
in alarm condition
-button is
now Reset
Greater than 40°C
= Relay 1 in alarm
condiction
Greater than 60°C
= Relay 2 in alarm
condiction
The text Alarm shows which
set point that is exeeded.
14. ERROR CODES
CMT has a monitor for the temperature sensor and
disconnects from heating or cooling in the event of
short-circuit or interruption in the sensor circuit. In
the case of interruption the display shows Er0 and in
the case of short-circuit Er1 is displayed.
Er0 Interruption in the sensor intake
Er1 Short-circuit in the sensor intake
Er2 Temperature out of range
Temperature/ohm table
Sensor type
Temperature
Ohm
Pt1000
0°C
20°C
40°C
1000
1078
1156
Pt 100
0°C
20°C
40°C
100
107,8
115,6
Ni1000
0°C
20°C
40°C
1000
1090,7
1185,7
NTC
(Calectro type
22/33/44/55/99)
0°C
20°C
40°C
37942
14871
6539
PTC
Calectro type 95)
0°C
20°C
40°C
1631
1915
2226
15. RESETTING FACTORY SETTINGS
In changes to or reselection of application set-
tings will revert to factory settings. The type of
temperature sensor and its possible fine-adjust-
ment will, however, not be affected. See section
7: Select Application/Function.
16. FIGURES
FIG. 1
45
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
60 86
52,5/3 mod.
54
29
19
11
59
FIG. 2
The relay outputs are shown in alarm/
no power on condition. Max 5A, 250V.
1
2
L
N
3
4
5
6
7
8
9
10 11 12
13 14 15 16
(+) (–)
230V AC
230V AC
Relay 1
Relay 1
Relay 1
Relay 2
Relay 2
Relay 2
Not used
Not used
T
emp. sensor
T
emp. sensor
Not used
Not used
24V AC/DC
24V AC/DC
FIG. 3
Heating
cable
Temperature sensor
CMT
Thermostat
N
S
Heating
cable
