22
Installation and Maintenance Instructions
Model G-SND Global Series Sounder
Wiring the Ex de Models
CIRCUIT BOARD DAMAGE: The DC sounders are polarity
sensitive, and MAY BE DAMAGED by incorrect electrical
hookup. When connecting the DC sounder to the voltage supply
lines, POLARITY MUST BE OBSERVED. In addition, damage will
result if the voltage rating of the particular model is exceeded by
more than 10 percent.
To wire the Ex de models:
1.
Unscrew the four M4 socket-head cap screws and remove
the terminal box cover.
2.
Strip the wire insulation 8 mm to 9 mm (0.33 in).
NOTE:
When using more than one single or multiple strand
lead, the connection into either side of any terminal must be
joined in a suitable manner, e.g. two conductors into a single
insulated crimped bootlace ferrule.
3.
To connect wires, press the pushbutton on the terminal block
with a Phillips screwdriver and insert the wire into the round
opening. Release pushbutton to make connection.
4.
Follow the instructions starting below for your line voltage and
continue to Step 5 on page 25. Refer to Figure 6 on page 15
for the voltage selector switch and page 20 for the tone chart.
Figure 8 Connections for DC or AC Ex d e sounder
Alt04
Alt03
Alt01
L1/+
L2/-
Alt02
Alt04
Alt03
Alt01
L1/+
L2/-
Alt02
