F3200/NDU AS4428.1 Installation Manual
Document No: LT0255
Applications
Page 6-30
5 July 2016
Issue 1.22
6 TERMINAL ISOLATED REPEATER (CONTINUED)
3.
The maximum resistances shown for the fire wire circuits must include both cable
and fire wire (see Table 6.4.2 and associated note 2).
4.
The letter in ( ) after the cable length, and the value in ( ) under the cable length
specify which parameter out of capacitance (C), inductance (L) and resistance (R)
provides the limitation, and what the maximum value is.
5.
The (M) after a detector quantity indicates the maximum quantity allowed per circuit.
6.
The maximum allowable detector quiescent (or 2 second switch on) current is 3.5mA
(only relevant to R24BEx).
6.4.3.3
4 TERMINAL ISOLATED REPEATER WITH ZONE ADAPTOR UNIT
ZAU401
With the addition of the ZAU401 Zone Adaptor Unit Rev 2 (PA0838), a lower-cost 4-terminal
isolating repeater can be used with the F3200 panel.
The ZAU401 can be thought of as a single zone circuit module that can be added to a panel
to make it compatible with a wider range of detectors
– in particular when using IS repeaters.
It can support up to 2mA of quiescent detector current and normally uses a 3k9 5% EOL
resistor.
Wiring of the ZAU401 and the isolating repeater to the panel is shown in Fig 6.4.3.3.
Note that only one ZAU401 can be connected to each of the panel’s zone circuits.
The following 4-terminal isolating repeaters can be used to connect the ZAU401 to an IS
detection circuit. Note that dual channel repeaters have two separate repeaters, and can
connect two circuits with two ZAU401s. Detector quantity and circuit lengths are 6 shown in
Table 6.4.4.
Pepperl & Fuchs
KHD0-ICS/Ex 1.51 (single channel)
Pepperl & Fuchs
KHD0-ICS/Ex 2.51 (dual channel)
Pepperl & Fuchs
KFD0-CS-Ex 1.51P (single channel)
Pepperl & Fuchs
KFD0-CS-Ex 2.51P (dual channel)
FIG 6.4.3.3
F3200 WITH ZAU401 & 4 TERMINAL IS REPEATER
1 BATT+
2 ZONE+
3 EOL+
4 EOL-
5 ZONE-
6 BATT-
T+ 3
TC 2
T- 1
ZAU401 (Rev 2)
(PA0838)
EOL*
To Panel
Zone Circuit
+
-
+ -
Panel
24V
{
KHD0_
OR
KFD0_
OR
MTL5061
+
-
Ex DETECTOR
EOL
3k9
5%
* EOL to suit Panel
SAFE AREA HAZARDOUS AREA
4-Terminal Isolating
Repeater
Ex DETECTOR
