Ametek DMS-3K Installation & Operation Manual page 80

Distributed monitoring system
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determine the relay coil state (energized or de-energized when normal). Energized is
used as a failsafe mode, so that a loss of power would have the same condition as an
alarm. This output is typically used with 8RR, 16RR, 5 PR, 8PR and I/R modules, but
can be used for 8 I/O and 16 O modules.
• H
Horn
This output is used to activate a horn from a group of inputs. The horn will operate in
conjunction with the operating sequence selected. (clears with silence and acknowledge
pushbuttons) There are additional settings to select the priority of this horn (from 1-3)
when multiple horns are provided in a system to avoid the sound of multiple horns going
off simultaneously. The Horns selected as 1 will have priority over the horns selected as
2 or 3. If an alarm horn is activated as a priority 2 and a priority 1 horn turns on, the
priority 2 horn will turn off. Horns selected with priority 0 have no priority over other
horns. The horn can be configured with an automatic silence feature configured for 0-300
seconds. This output is typically used with 8RR, 16RR, 5 PR and I/R modules. In many
cases, the digital output from the 8 I/O and 16 O modules is used for a Horn output
which is connected to the Power Supply Regulator Horn Input which can provide a
higher powered relay output.
• CH
Clear Horn
This output is used to activate a 'clear horn' from a group of inputs configured with a
Ringback operating sequence. (clears with silence and acknowledge pushbuttons)
When used in a Ringback operating sequence, the 'clear horn' sounds when an input
returns to normal. There are additional settings to select the priority of this 'clear horn'
(from 1-3) when multiple 'clear horns' are provided in a system to avoid the sound of
multiple horns going off simultaneously. The 'clear horns' selected as 1 will have priority
over the 'clear horns' selected as 2 or 3. If a 'clear horn is' activated as a priority 2 and a
priority 1 'clear horn' turns on, the priority 2 'clear horn' will turn off. Clear horns selected
with priority 0 have no priority over other horns. The horn can be configured with an
automatic silence feature configured for 0-300 seconds. This output is typically used with
8RR, 16RR, 5 PR and I/R modules. In many cases, the digital output from the 8 I/O and
16 O modules is used for a Horn output which is connected to the Power Supply
Regulator Horn Input which can provide a higher powered relay output.
• RP
Group Reflash Pulse
This output is used as a common alarm relay to present the status of multiple inputs. It
will follow the status of all the inputs selected so if one input in the group is in alarm, the
relay will operate. Whenever there is a new alarm in that group, the contact will pulse
open for a half second and remain closed until all alarms in the group return to normal.
The Reflash Output needs to be enabled with a check box in the RFL Out box. There is a
setting to determine the relay coil state (energized or de-energized when normal).
Energized is used as a failsafe mode, so that a loss of power would have the same
condition as an alarm. This output is typically used with 8RR, 16RR, 5 PR and I/R
modules, but can be used for 8 I/O and 16 O modules.
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