Technical Manual
5054 Rev 0
For Firmware V2.0.x
4
A termination resistor 120R has to be connected in the last unit on the RS485 bus. In 5054
units, this is done via jumper "J7" or “J3”. ("J7" shunted = the termination resistor is
connected.)
1.2 Power supply
The three tables below are some examples of the minimum cable length and type
requirements to use in display unit wiring.
1.2.1 Joint communication and power supply in twisted pairs, shielded,
RS485-cables
Cable (nearest size)
Type
Distance to unit
Belden 1419A, 2pr
1 pair of Communication & 1 pair of power
150 m
Belden 1420A, 3pr
1 pair of Communication & 2 pairs for power
300 m
Belden 1421A, 4pr
1 pair of Communication & 3 pairs for power
450 m
Belden 1212F, 4pr
1 pair of Communication & 3 pairs for power
400 m
1.2.2 Separate communication cable
Communication Cable
Type
Distance to unit
Belden 1419A, 2pr
1 pair of Communication (RS485)
1200 m
Belden 1421F, 4pr
1 pair of Communication (Cat5e F/UTP)
1200 m
Belden 7703NH, 1pr
1 pair of Communication (LonWorks)
1200 m
Note
: Maximum cable length for communications is 1200 m irrespective of the cable type. Brooks
recommend to use higher gage shielded cables for communications e.g. 0.7 mm² or 1.0 mm².
1.2.3 Separate power supply cable
Power Cable
Type
Distance to unit
Belden 5120UL, 14#
1 pair for power supply (Fire Alarm 14#)
1600 m
Belden 5220UL, 16#
1 pair for power supply (Fire Alarm 16#)
1000 m
Draka ELQYB, 2x1
1 pair of power supply (COM-loop)
500 m
Note
: As the limitation for communication cable length is max 1200 metre, it is recommended to
use 1.5mm² for the power supplied to display units.
The display unit has two screw terminal blocks for cable connections.
Note
: The current consumption of 5054 units is higher than the older style 1728 or 1736. Current
calculation must be performed based on the number of units that can be connected to the FDCIE.
The FDCIE can supply power to a maximum of 4 display units, additional units require external
power supply.
1.3 USB Interface
The display unit is equipped with an USB interface (X2) to directly download the firmware
and file system to the display unit via EBLWin.