20030516
User’s Manual
12
STAR FINGER007
4. INSTALLATION REQUIREMENTS
Installing the
FINGER007
is a relatively easy task. It can be installed with common hand tools and readily available
communications wire. This section provides information about wiring, wire runs and other information to make the
installation quick and easy.
4.1 WIRE/CABLE
Good electrical connections will minimize the line losses and avoid damages to the
FINGER007
control electronics.
Use good quality and proper thickness of wire with durable insulation such as vinyl or PVC. It may be faster and
much economical to run multiple, twisted pair cable rather than individual pairs. The following cable and wire
thickness from the Belden Master Catalog 885 are adequate for the most
FINGER007
applications. These are
offered as a reference only.
Belden No. 9745 3 twisted pairs, 22 AWG, 7/30 stranded, unshielded, PVC insulation and jacket,
14.7 ohms/1000 feet (about 300meter).
Belden No. 9750 3 twisted pairs, 20 AWG, 10/30 stranded, unshielded, PVC insulation and jacket,
10.3 ohms/1000 feet (about 300meter).
Belden No. 8303 3 twisted pairs, 22 AWG, 7/30 stranded, shielded, overall foil/braid shield, PVC insulation and
jacket, 14.7 ohms/1000 feet (about 300meter).
CONDUIT
The
FINGER007
does not normally require conduit. However, some location may require conduit for wire
protection. Check installation requirements and specifications for your site.
COMMUNICATIONS WIRING
FINGER007 communication is required for using twisted pair wires.
RS232C : 15 meters RS422 : 1200 meters
POWER WIRING
Wires supplying power to
FINGER007
may be either twisted or non-twisted pairs. Select the proper wire size to
minimize line losses.
OTHER WIRING
Other wiring not mentioned above may be twisted or non-twisted pair wires. This would include wires to door
contact sensors, door lock devices and other auxiliary devices. Wire runs should dictate the wire size used.
CAUTION
: Install a surge absorber or reverse surge protector(diode) at any relay contact that switches DC
voltages to an inductive load.
EARTH GROUND
The
FINGER007
must be properly grounded to the earth for safety reasons and to prevent damage to
the micro-electronics due to electrostatic discharges. The
FINGER007
must be connected to earth
ground either through conduit, if used, or through a separate ground wire.
On-site connection to earth ground can be accomplished through:
A earth ground rod, A metal water pipe, The building’s structural steel, A ground grid
