(((ELKRON))) - CT10-M / CT11-M
9
5.2 DESCRIPTION OF THE INPUTS
IN1 and IN2 ALARM INPUTS
• There are
2
single-shot alarm inputs.
• They can be programmed as
N.O.
-
N.C
. -
TERMINATED
or
NOT USED
(see “Instal-
lation menu”).
• The inputs can be programmed individually as
24h/24h
(always active and instanta-
neous)
or subjected to ON status
of the communicator (TC command, see IN3).
• An input subjected to ON status (AND TC) can be programmed as INSTANTANEOUS or
TIMED (5sec./15sec./30sec./60sec./90sec).
IN3 INPUT (TC)
• IN3 input is configured as a TC (Trigger Control) command. It can be programmed as
N.O., N.C. or TERMINATED. IN1 and IN2 switching will not be recognised and the alarm
communication procedure will not be activated if level +12Vdc (TC ON) is present on
IN3. If on the other hand the level is 0Vdc (TC OFF), the switching of inputs IN1 and IN2
will generate a cycle of telephone calls. This operation can be useful if the communicator
is connected to an Elkron alarm control unit with a TC programmed output that by
default provides a high level (+12V) when the system is off and a low level (0V) when it
is active. Connect input IN3 to output TC of the Elkron control unit to automatically
enable/disable alarm transmission according to the active/inactive status of the control
unit.
• A later transition from ON to OFF of the TC command, i.e. following a new activation of
the system, will cause the “alarm memory” to be cleared.
• NOTE: Conventionally, condition
0V = TC OFF
and
+12V = TC ON
is provided when
the TC input is programmed as N.O. (normally closed).
5.3 DESCRIPTION OF THE OUTPUTS
U1 and U2 FAILURE OUTPUTS
• These electrical outputs are dedicated to signalling FAILURES. They normally output a
+12Vdc signal, which is down when the output is signalling. Two types of failures are
controlled, namely “TECHNICAL FAILURES” and “TELEPHONE FAILURES”.
•
Output U1
is dedicated to “technical” failures. It switching indiscriminately for:
-
No power supply
or external power supply under the minimum stated value for
longer than 2 hours (terminals 6 and 7).
-
Low battery,
i.e. power under a threshold of
10.8Vdc
for longer than 120 seconds.
- No power supply/power back and low battery events are managed in the following
way:
1. No Power supply: the “POWER SUPPLY/BATTERY” LED on the front panel goes out
after approximately 10 seconds. After a 2 hour time-out, U1 switches to blackout
and makes the technical failure calls to the enabled telephone numbers (voice and/or
text message).
2. Power supply back: the “POWER SUPPLY/BATTERY” LED lights up after approximately
10 seconds and U1 is reset. No calls are made.
3. If the battery power drops under the 10.8V threshold, the “POWER SUPPLY/BATTERY”
LED will blink, the U1 output will switch to low battery and the technical failure calls will
be made. U1 will be reset when power supply comes back but the “POWER SUPPLY/
BATTERY” LED will continue blinking to indicate that the low battery event has been
detected. This LED is switched of manually by clearing the System Status menu
memory. Note that low battery status can only be detected during a no power
supply.
Specific calls with dedicated voice message can be associated to telephone
failuSpecific calls with dedicated voice/text message can be associated to technical
failures.
