7
95-8576
3.3
Check all field wiring to be sure that the proper
2.
connections have been made.
Important
Do not test any wiring connected to the detector
with a meg-ohmmeter. Disconnect wiring at
the detector before checking system wiring for
continuity.
Make the final sighting adjustments and ensure that
3.
the mounting bracket hardware is tight.
EOL Resistors (Not Used with EQp Model)
To ensure that the insulating material of the wiring terminal
block will not be affected by the heat generated by EOL
resistors, observe the following guidelines when installing
the resistors.
Required EOL resistor power rating must be 5
1.
watts minimum.
NOTE
EOL resistors must be ceramic, wirewound
type, rated 5 watts minimum, with actual power
dissipation not to exceed 2.5 watts.
Resistor leads should be cut to a length of
2.
approximately 1 1/2 inches (40 mm).
Bend the leads and install the EOL resistor as
3.
shown in Figure 6.
Maintain a 3/8 inch (10 mm) minimum gap between
4.
the resistor body and the terminal block or any
other neighboring parts.
NOTE
All cable entry devices and blanking elements shall
be certified to “E-generation” or “ATEX” standards,
in type of explosion protection increased safety
“e” or flameproof enclosure “d” (as applicable),
suitable for the conditions of use and correctly
installed. They shall maintain the degree of
ingress protection IP66 for the apparatus. Unused
apertures shall be closed with suitable blanking
elements.
Figure 4—X3302 Terminal Block
9
8
7
6
5
4
3
2
1
19
18
17
16
15
14
13
12
11
4-20 mA +
4-20 mA –
4-20 mA + REF
4-20 mA – REF
COM FIRE
COM FIRE
N.O. FIRE
N.O. FIRE
N.C. FIRE
N.C. FIRE
COM FAULT
COM FAULT
N.O. FAULT
N.O. FAULT
24 VDC +
24 VDC +
24 VDC –
24 VDC –
24 VDC –
29
28
27
26
25
24
23
22
21
SPARE
SPARE
COM AUX
N.O. AUX
N.C. AUX
RS-485 A
RS-485 B
MAN
Oi
B2061
Figure 5—X3302 Wiring Terminal Identification
11
12
13
14
15
16
17
18
19
BULKHEAD
3/8 INCH (10 MM) GAP MINIMUM
A2126
Figure 6—EOL Resistor Installation
