CALECTRO CTA-24/230V Installation Instructions

CTA-24/230V INSTALLATION INSTRUCTIONS
ENGLISH
2-stage overheating alarm.
Multi-voltage: 24V AC/DC and 230V AC
WARNING: IMPORTANT
!
INFORMATION
CONCERNING
ELECTRICAL SAFETY
AND ENVIRONMENT
The product may incorporate lethal volt-
age. The product's enclosure is not intend-
ed to be opened. At 230V AC supply volt-
age the product shall be powered via a
proximally mounted disconnection device
marked: "Disconnection device for ther-
mostat CTA". The product's relay switch
can be energised with 230V which must
be disconnected prior to conducting main-
tenance work. The product is intended for
outdoor use. The product shall not be sub-
jected to liquids or moisture. The outside of
the product can be cleaned using a slightly
moist cloth rag. The product is intended for
installation on a DIN rail / Norm enclosure
in an area protected from the public.
INDEX
1. Technical data
2. Function
3. Use
4. Installation
5. Maintenance
6. Buttons and menu system
7. Selection of temperature sensor type -
factory setting: Pt1000
8. Setting of reference values
9. Fine-adjustment of the temperature meas-
urement
10. Setting of timer function
11. Display example
12. Error codes and temperature/ohm table
13. Figures
14. Menu system – overview/quick menu
Calectro AB Phone: +46 31-69 53 00 info@calectro.com www.calectro.com
1. TECHNICAL DATA
Supply voltage:
24V AC ±10%,
24V DC ±5% and
230V AC ±10% 50-60 Hz
Relay outputs: 250V ~ 5SnnbA resistive
loading, alternating
potential-free
Power consumption: 4W
Temperature range: -99 to +600°C
Ambient temperature: 0 to +40°C
Selectable
temp.sensors:
Pt1000 (factory setting),
Pt100, Ni1000,
NTC (Calectro type:
22/33/44/55/99) and
PTC (Calectro type: 95)
Temperature range for
different sensor types:
Pt1000:
-99 to +600°C
Pt100: -99 to +600°C
NTC: -10 to +125°C
PTC:
-25 to +110°C
NI1000: -30 to +125°C
Mounting: DIN rail, Norm-enclosure
Dimensions WxHxD: 52.5 x 86 x 59mm
Weight: 240 g.
Enclosure class:
IP20
2. FUNCTION
CTA is a 2-stage overheating alarm in which 2 differ-
ent alarm temperatures can be set. When the sensor
temperature exceeds alarm temperature 1, relay 1 is
deactivated (alarm condition). The same is valid for
alarm temperature 2 and relay 2.
In the event of alarm the relay(s) are locked in the
alarm condition until the Reset button has been
depressed. If the alarm condition reverted to "normal
temperature" when the Reset button was depressed,
the relay is reset and the central button reverts to the
Menu function.
If the alarm condition persists after the Reset but-
ton has been depressed the relay will not be reset,
however the central button reverts to Menu function
for 5 seconds in order to allow settings in the menu
system.
The reference values and alarm temperatures can
always be adjusted even during an alarm condition.
See section 8.
The relays are activated in energised normal condi-
tion and are deactivated in the event of an alarm or
power loss. In the event of an alarm "ALARM" is dis-
played under the respective alarm temperature that
has been exceeded.
CTA monitors the temperature sensor and deacti-
vates the alarm relays in the event of short-circuit or
interruption in the sensor circuit.
CTA also has an adjustable alarm delay time (0-120
minutes), with a factory setting of 0 minutes.
CTA can be powered by 24V AC/DC via plinth 15-16
or 230V AC via plinth 1-2. CTA has two alternating
potential-free relay outputs (5A, 250V). During start-
up and when replacing a temperature sensor CTA
conducts a self-test. 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
interruption to the thermometer sensor the display
shows Er0 and in the case of short-circuit Er1 is dis-
played.
EN
3. USE
CTA is an electronic overheating temperature
alarm used for monitoring rising temperatures.
Possible uses are, for example, as a fire protec-
tion alarm in ventilation plants, or as an over-
heating guard.
4. INSTALLATION
CTA is designed for mounting on a DIN rail and is
adapted for Norm enclosures.
5. MAINTENANCE
CTA is maintenance-free.
6. BUTTONS AND MENU SYSTEM
▲ = Step up in the menu / increase value - Keep
the button depressed and the alarm temperature
counts up rapidly.
▼ = Step down in the menu / decrease value -
Keep the button depressed and the alarm tem-
perature counts down rapidly.
= Is a multi-function button whose current
function* is shown in the display beside the but-
ton.
* Central button functions:
• Exit Menu = Exit the menu
• Menu = Enter the menu or select application
• Enter = Confirm setting
• Reset = To reset relay after alarm
Exit
Menu
Enter
Reset
The menu system consists of the following sub-
menus:
1. Selection of temperature sensor
2. Fine-adjustment of the temperature meas-
urement
3. Timer functions
4. End the menu system
7. SELECTION OF TEMPERATURE
SENSOR
CTA can be connected to several different types
of temperature sensor: Pt100, Pt1000, Ni1000
and the ETF series for Calectro's NTC and PTC
sensors. Pt1000 is the factory set sensor type.
2. Press the Menu button ( ) to access the
menu system
3. The actual type of temperature sensor will
be displayed.
4. Press Menu-Enter to change the type of