Panasonic 6295 - 5.2 INTRINSICALLY SAFE INSTALLATION

6295-6298 ENCLOSED HEAT DETECTOR - FIRE ALARM SOLUTIONS TECHNICAL DESCRIPTION
9
E+ E- B-
A+
A+ B- E+ E-
In2+
In2-
N.C.
N.C.
In1(+)
Z/In0(+)
Re1b
Re1a
In1(-)
Z/In0(-)
Re0b
Re0a
3
4
1+
2-
1
2
J2J1
2 (-)
1 (+)
5.2. INTRINSICALLY SAFE INSTALLATION (6295-6296)
Screen wire termination is not provided.
If cable screen is used, it should be connected to the closest earth point (protective earth) outside the
hazardous (Ex) area and should be capable of withstanding a test voltage (500 V AC) for one minute.
Do not clean by rubbing or with solvents to avoid electrostatic hazard.
Do not install in a continuous dust ow to avoid propagating brush discharges.
COM loop
24 V DC
Interconnecting cable
Hazardous (Ex) area
Zone line
Channel
Alternative A
Alternative B
Zone Zone
4461 2822
Exp. Board 4580
EX zone line input
Galvanic Isolator / Barrier unit **
A+, B-
Ui = 30 V
Ii = 40 mA
Ci = 3 nF
Li = 0 H
Uo<=Ui (=30V)
Io<=Ii (=40mA)
Co > = Ci x 5 (15nF)
Lo >= Li (0 H)
6295-62966295-6296
End-of-line device
**
Alternative A:
The conventional IS detectors are connected via a galvanic
isolator / barrier unit to an expansion board 4580 zone line
input.
The zone line input is programmed as:
Ex zone line input (EOL resistor).
End-of-line resistor 10K.
Alternative B:
The conventional IS detectors are connected via a galvanic
isolator / barrier unit to an addressable isolated zone
interface 2822 that is connected to an I/O unit 4461 zone line
input.
The I/O unit 4461 require an Addressable Isolated zone
interface 2822 with PCB 2823 revision ≥ 2.
End-of-line resistor 8K2 is supplied with 2822.