DKM-0224 User Manual V-1.0
(11.08.2016)
-1-
DKM-0224
ALARM ANNUNCIATOR
The DKM-0224 is an 24 channel, 144x144mm
alarm annunciator designed to be used in energy
and automation systems.
Optically isolated digital inputs are equipped with
noise cancelling filters and are capable of
operating smoothly in high electrical noise
environments. The detection delay of inputs are
adjustable between 2 and 500ms.
The module features 3 relay outputs rated at
5Amp. Relays provide Horn, Bell and Internal
Failure functions. An additional buzzer is provided
inside the unit for audible alarms.
The unit features ultra-bright, bicolor (red-green)
led indicators. Alarms may be assigned to
different priority levels in order to reduce
confusion.
Using front panel pushbuttons, alarms may be
acknowledged and reset, the unit tested.
The configuration of the module is performed with
jumpers placed on the back panel. Additional
programming may be performed from the front
panel or through programming software.
The isolated RS-485 MODBUS RTU
communication port is free from ground potential
differences and allows safe transfer of measured
parameters to automation and monitoring
systems.
It is possible to monitor the module and keep
records with Datakom software.
The supply input is isolated from other terminals.
The module has two supply versions being 19-
150V-DC or 85-305V-AC (88-400V-DC).
When the unit detects a fault signal from an input,
the related alarm led becomes active.
FAST FLASH:
At the first detection of the fault.
SLOW FLASH:
Activated when the ACK(alarm
acknowledge) pushbutton is pressed and if the
fault is still active.
STEADY ON:
Activated if the fault signal
disappears at SLOW FLASH condition.
LED OFF:
The alarm led turns off when RESET
pushbutton is pressed and fault signal is not
present.
When a fault signal is detected, the internal
buzzer turns on with a period of 1 second. If ACK
pushbutton is pressed, the buzzer turns off. If
ACK is not pressed within 1 minute, then it
switches to slow sound mode (beeps once every
10 seconds.)
HORN RELAY:
If any “red” alarm led turns on,
then the horn relay will also turn on. The relay
turns off when ACK pushbutton is pressed.
BELL RELAY:
If any “green” alarm led turns on,
then the bell relay will turn on. The relay turns off
when ACK pushbutton is pressed.
WATCHDOG RELAY:
At startup the relay turns
on. If the board fails, then it turns off.
HORN/BELL LED:
If the HORN relay turns on,
the “red” led turns on. If the HORN relay is not on
and if the BELL relay is on, then the “green” led
turns on. If both relays are off then the led is off.
SAFE/FAIL LED:
If an internal fault condition is
detected at self-test, then this led will turn on
“red”, else it turns on “green”.
DESCRIPTION
FEATURES
