Cable Connections - Pfannenberg BExCS110-05D-P Instruction Manual

The following table shows the input current taken by the various
combined sounder beacons and shows the maximum voltage at
which the combined sounder beacons can be operated:
Nominal
Model No. I/P Volt-
age
BExCS110-05D-P
12Vdc
DC012
BExCS110-05D-P
24Vdc
DC024
BExCS110-05D-P
48Vdc
DC048
BExCS110-05D-P
115Vac
DC115
BExCS110-05D-P
230Vac
AC230
Sounder Section
The input current to the sounder section will vary according to
the voltage input level and the frequency of the tone selected.
The current levels shown above are for the 440Hz Continuous
tone @ nominal input voltage.
Beacon Section
The input current to the beacon section will vary according to the
voltage input level. The current levels shown above are for nom-
inal input voltage.
9) Selection of Cable. Cable Glands, Blanking
Elements & Adapters
When selecting the cable size, consideration must be given to
the input current that each unit draws (see table above), the
number of combined sounder beacons on the line and the length
of the cable runs. The cable size selected must have the neces-
sary capacity to provide the input current to all of the combined
sounder beacons connected to the line.
For ambient temperatures over +40ºC the cable entry tempera-
ture may exceed +70ºC and therefore suitable heat resisting ca-
bles and cable glands must be used, with a rated service tem-
perature of at least 110ºC
The dual cable gland entries have an M20 x 1.5 entry thread. To
maintain the ingress protection rating and mode of protection,
the cable entries must be fitted with suitably rated ATEX certified
cable glands and/or suitably rated ATEX certified blanking de-
vices during installation according to EN / IEC60079-14.
If a high IP (Ingress Protection) rating is required then a suitable
sealing washer must be fitted under the cable glands or blanking
plugs.
For use in explosive dust atmospheres, a minimum ingress pro-
tection rating of IP6X must be maintained.
The BEx combined sounder beacon range can be supplied with
the following types of adapters:
M20 to ½" NPT
M20 to ¾" NPT
M20 to M25
It is important to note that stopping plugs cannot be fitted onto
adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated and ATEX certi-
fied adapters.
Pfannenberg GmbH · Werner Witt-Straße 1 · D-21035 Hamburg · Tel.: 040/7 34 12-0 · www.pfannenberg.com
05/2021
Max.
Sounder Beacon
I/P
Current Current
Volts
195mA 750mA 14V
265mA 300mA 28V
130mA 180mA 54V
110mA 140mA 126V
56mA 55mA 253V
10) Earthing
Both AC and DC combined sounder beacon units must be con-
nected to an earth. The units are provided with internal and ex-
ternal earth terminals which are both located on the terminal
chamber section of the unit.
Internal
Earthing
2-off M20
Cable En-
tries
Fig. 3 Internal View of Cover
When using the internal earth terminal ensure that the stainless
steel M4 flat washer is between the incoming earth wire and the
enclosure.
Internal earthing connections should be made to the Internal
Earth terminal in the base of the housing using a ring crimp
terminal to secure the earth conductor under the earth clamp.
The earth conductor should be at least equal in size and rating
to the incoming power conductors.
External earthing connections should be made to the M5 earth
stud, using a ring crimp terminal to secure the earth conductor to
the earth stud. The external earth conductor should be at least
4mm² in size.

11) Cable Connections

The combined sounder beacon unit BExCS110-05D has sepa-
rate printed circuit boards in the sounder and beacon sections.
The terminals for the sounder are on the printed circuit board in
the sounder section and the terminals for the beacon are on the
printed circuit board in the beacon section (see figures 4a, 4b,
6a and 6b). See section 7 of this manual for access to the enclo-
sure. See section 12 and 13 for AC and DC wiring diagrams re-
spectively.
Wires having a cross sectional area between 0.5 mm² to 2.5mm²
can be connected to each terminal way. If an input and output
wire is required the 2-off Live/Neutral or +/- terminals can be
used. If fitting 2-off wires to one terminal way the sum of the 2-
off wires must be a maximum cross sectional area of 2.5mm².
Strip wires to 8mm. Wires may also be fitted using ferrules. Ter-
minal screws need to be tightened down with a tightening torque
of 0.45 Nm / 5 Lb-in. When connecting wires to the terminals
great care should be taken to dress the wires so that when the
cover is inserted into the chamber the wires do not exert excess
pressure on the terminal blocks. This is particularly important
when using cables with large cross sectional areas such as
2.5mm².
12) AC Wiring
A 2-way terminal block is provided on the AC Sounder for power.
There are 1-off Live and 1-off Neutral terminals in total. A 3-way
terminal is provided for stage switching. There are 1-off stage 2,
1-off stage 3 and 1-off common terminals in total. A 4-way
Page 11 / 16
Internal
Bonding
Wire Ter-
minal
30080-014a