Page 68 - catalogue-2024

Energy Quality

Alarm Annunciators / DKM-208 / DKM-224

DKM-208 / DKM-224

ALARM ANNUNCIATORS

The DKM-0224 is a 24 channel, 144x144mm alarm annunciator, designed to
be used in energy and automation systems. Optically isolated digital inputs
are equipped with noise suppressing 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 DIP Switches placed on
the back panel.

ALARM LEDS
FAST FLASH: at the first detection of the fault or if fault
is detected at LED steady on condition.
SLOW FLASH: activated when the ACK (alarm
acknowledge) pushbutton is pressed and if the fault
signal is still active.
STEADY ON: activated if the fault signal disappears at
SLOW FLASH condition. Alarm led will fast flash fast if
fault signal reoccurs.
LED OFF: the alarm led turns off when RESET
pushbutton is pressed and fault signal is not present
RELAY OUTPUTS
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. The HORN RELAY can be
made active/passive by holding pressed the HORN
button for 3 seconds.
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 the wathcdog relay turns off.

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