Wiring The Ex D Models; 24 Vdc Models - Federal Signal Global G-STR Instrucciones De Instalación Y Mantenimiento

This section has wiring instructions for the three flameproof models:
• G-STR 24 Vdc
• G-STR 120 Vac
• G-STR 220-240 Vac
Ex d units are supplied with a six-position, PCB mounted, screw- terminal block.
The maximum wire gauge is 4.0 mm
or higher. Use only stranded cable to terminate the beacon. The cross-sectional
area of the primary earth (ground) must equal the cross-sectional area of the
phase conductor.
Cable termination for these models should be in accordance with specifications
applying to the application. It is recommended that all cables and cores should
be fully identified. Use the appropriate cable gland for the application. Gland
entry threads are M20-1.5 x 6H.
Tools needed:
• 1.5 mm A/F hexagon key
• 2 mm flat-tip screwdriver
• No. 1 Phillips screwdriver
• Wire stripper

Wiring the Ex d Models

To wire the Ex d models:
1.
Unscrew the M3 hex set screw on the side of the housing one full turn.
2.
Remove the lens cover from the housing by turning the cover counter-
clockwise. Three 120-degree spaced reliefs are provided for a 3/8 in spanner
wrench if needed. If the cover will not unscrew, back out the set screw a few
additional turns.
3.
Loosen the captive Phillips screw retaining the printed circuit board (PCB).
4.
Slide out the PCB until the terminals clear the housing. Strip the wire
insulation 8 mm (0.31 in). Maximum screw-tightening torque is 0.6 N•m (5
in-lb).

24 Vdc Models

a.
See Figure 6. Connect the positive (+) power source wire to the
terminal-block screw marked +.
b.
Connect the negative (–) power source wire to the terminal block screw
marked –.
c.
Connect the earth ground wire to the terminal block pole marked
-GND.
Installation and Maintenance Instructions
Model G-STR Global Series Strobe Beacon
(12 AWG). The wire must be rated 97 °C
2
13