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TM293 MEDC DB3BM UL Technical Manual
Sounder/Horn – dB3BM uL
TM293.A August 2022 www.eaton.com
3.0 INSTALLATION
The unit is mounted via 2 off Ø23/64” (Ø9mm) fixing
holes in the U-shaped stirrup/mounting bracket. If
required, the unit can be initially placed via the Ø33/64”
(Ø13mm) central hole in the stirrup. The unit can then
be rotated to the required position and fixed via the
other holes.
If ordered with the unit, a swivel mounting bracket option
is available to allow further rotational adjustment to
the unit.
The fixing holes have been designed to accept a Ø5/16”
(M8) screw or bolt.
Warning
– Use a support system which has sufficient
wind load strength to comply with the applicable codes
and standards. To prevent the collection of dust and
foreign objects it is recommended that the horn is
mounted horizontally or pointing downward.
Warning
– The drilling of field wiring threaded entries is
not permitted.
Access to Terminals
The cover is secured with 6 off M5 cover screws (4.0mm
A/F hexagon key). Once the cover fixings are unscrewed,
the cover can be lifted away from the enclosure to gain
access to the interior. The cover fixings are captive and
will remain in the cover.
It is intended that the conductors used for supply and
earth connections of the unit shall be 2.5mm² (14AWG).
For supply connections be aware that cable temperature
rise may be up to 30K.
Once termination is complete, carefully replace the
cover assembly back onto the body, avoiding damage to
the mating surfaces. Tighten the cover screws evenly.
Ensure the O-ring is seated correctly on the cover during
re-assembly. Ensure the required maximum gap of
0.025mm is maintained between the cover and the base
once assembled. To maintain the IP rating of the unit, the
recommended torque on the cover screws is 26.5 lbf-in
3.0Nm.
AC input wiring details (Types 1 & 2)
•
Type 1:
Connect the live and neutral supply wires to the
terminals as detailed in the wiring diagram. The unit will
be supplied with the link between R1 and R0 fitted to
the terminals. When power is applied to the unit, the
stage 1 tone will be produced as selected on the 5- way
DIP switch.
•
Type 2:
Connect the live and Neutral supply wires to
the terminals as detailed in the wiring diagram. The unit
will be supplied with no link fitted between R1 and R0.
Connect wires and remote switches to terminals R0,
R1 and R2 as shown. When power is initially applied
to the unit, no tone will be produced. When the switch
connected to R1 is closed, the stage 1 tone will be
produced as selected by the 5-way DIP switch on the
electronics assembly. When the switch connected to R2
is closed, the pre-selected tone for stage 2 is produced.
See tone table 2 for details of pre-selected tones.
ote:
N
Closing both switches will produce no tone.
Wiring details
The unit is available in a number of basic configurations:
Type 1:
AC input, single stage.
Type 2:
AC input, dual stage with voltage-free stage
selection.
Type 3:
DC input, up to 3 user selectable stages
without monitoring.
Type 4:
DC input, up to 2 user selectable stages with
EOL / monitoring (standard configuration).
Type 5:
DC input, up to 3 user selectable stages
with optional EOL / monitoring (alternative
configuration).
Type 6:
DC input, 5 user selectable stages with voltage
free stage selection with or without
monitoring.
