cmt-24/230v universal thermostat

CMT-24/230V UNIVERSAL THERMOSTAT
with 10 selectable functions and multi-voltage: 24V AC/DC and 230V AC.
TECHNICAL DATA
24V AC ±10%, 24V DC ±5%
and 230V AC ±10% 50-60 Hz
250V ~ 5 A resistive loading,
potential-free alternating
4W
-99 to +600°C
0 to +40°C
Pt1000 (factory setting),
Pt100, Ni1000, NTC (Calectro
type: 22/33/44/55/99) and
PTC (Calectro type: 95)
0-15°C in stages of 0.2°C
DIN rail, Norm-enclosure
52.5x86x59 mm
240 g.
IP20
Supply voltage:
Relay outputs:
Power consumption:
Temperature range:
Ambient temperature:
Selectable temp.sensors:
Switching differential:
Installation:
Dimensions WxHxD:
Weight:
Enclosure class:
DIMENSIONS
(mm)
9 10 11 12
13 14 15 16
45 60 86
1 2 3 4
5 6
8
19
29
11
59
WIRING DIAGRAM
6
7
8
9
10 11 12
13 14 15 16
230V AC
Relay 1
Relay 1
Relay 1
Relay 2
Relay 2
Relay 2
Not used
Not used
Not used
24V AC/DC
5
Not used
4
24V AC/DC
3
Temp. sensor
2
Temp. sensor
N
230V AC
(+) (–)
L
1
The relay outputs are shown in alarm/
no power on condition. Max 5A, 250V
FUNCTION
CMT can be powered by 24V AC/DC via plinth 15-16 or
230V AC via plinth 1-2. CMT has two alternating potential-free
relay outputs (5A, 250V) and has an adjustable hysteresis
(switching differential) which is centred over the reference
value.
CMT carries out a self-test during start-up and following
change of temperature sensor. Three bars blink at the lower
part of the display. Once the self-test has finished the actual
temperature will be displayed. In the case of temperature sensor interruption the code Er0 is displayed and in the case of
short-circuit Er1 is displayed.
The reference value for relay 1 is shown in the upper left-hand
corner, and for relay 2 in the upper right-hand corner of the
display. The 'less-than' symbol (<), to the left of the reference
value, indicates that the relay is calling for heat (or starts an
alarm) when the temperature is lower than the reference value.
The 'greater-than' symbol (>) indicates that the relay is calling
for cooling (or starts an alarm) when the temperature is higher
than the reference value.
54
52,5/3 mod.
FEATURES
• Multi-voltage 24V AC/DC and 230V AC.
• 10 different selectable functions.
1-stage heating thermostat
1-stage cooling thermostat
2-stage heating thermostat
2-stage cooling thermostat
2-stage heating and cooling thermostat
1-stage cooling thermostat with low temperature
alarm
1-stage heating thermostat with overheating alarm
2-stage overheating alarm
High and low temperature alarm
Gutter thermostat
• Very easy configuration
• Backwards compatible with Calectro's other
thermostats
• 2 alternating potential-free relays
• Display
• Adjustable hysteresis 0-15°C
• Built-in timer function
• Fine-adjustment of the temperature measurement
CMT has an adjustable hysteresis (switching differential)
which is centred over the reference value. The factory setting
for the heating thermostat is 0.6°C and for the cooling thermostat 1.0°C. No hysteresis is used in alarm functions.
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.
In the alarm applications (applications 6-9) it is possible to set
a delayed alarm period (0-120 minutes). for example to be able
to defrost without activating the alarm. In the application for the
gutter thermostat (application 10) an after-running time can be
set (0-120 minutes) to ensure de-icing.
Phone: +46 31-69 53 00 Fax: +46 31-29 32 91 info@calectro.com www.calectro.com
CMT-24/230V UNIVERSAL THERMOSTAT
with 10 selectable functions and multi-voltage: 24V AC/DC and 230V AC.
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 alarm applications
(applications 6-9) the relays are deactivated (alarm sets off) in
the event of sensor failure. In application 10 (gutter thermostat)
the relays call for heating in the event of sensor failure, to counteract the formation of icicles.
For further information and settings refer to the installation
instructions accompanying the product.
USE
CMT is a universal thermostat with 10 built-in and selectable
functions.
Appl. 1
1-stage heating thermostat
Appl. 2
1-stage cooling thermostat
Appl. 3
2-stage heating thermostat
Appl. 4
2-stage cooling thermostat
Appl. 5
2-stage heating and cooling thermostat
Appl. 6
alarm
1-stage cooling thermostat with low temperature
Appl. 7
1-stage heating thermostat with overheating alarm
Appl. 8
2-stage overheating alarm
Appl. 9
High and low temperature alarm
Appl. 10
Gutter thermostat
INSTALLATION
CMT is mounted on a DIN rail and is adapted to Norm enclosures.
MAINTENANCE
CMT is maintenance-free.
ORDERING EXAMPLE
Article number
CMT-24/230V
CTS-BC-50-PT1000
CTS-RW-PT1000
CTS-OW-PT1000
ETUK-1
Description
Multi-thermostat
Temperature sensor, 50mm bulb 1.5m
Temperature sensor, room installation
Temperature sensor, outdoors/industry
IP55 norm enclosure, 3 modules
Phone: +46 31-69 53 00 Fax: +46 31-29 32 91 info@calectro.com www.calectro.com
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