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Document No: LT0122 F3200 Installation & Programming Manual
Applications
Issue 2.7 5 July 2001 Page 9-27
6 TERMINAL ISOLATED REPEATER (CONTINUED)
Notes
1. Circuit lengths quoted are from the isolator to the EOL. An extra 50 Ohms of cable
from the FIP to the isolator is also allowed (1.5km of 1.0mm², 1.1km of 0.75mm²).
The length quoted is the maximum for the corresponding quantity of detectors.
2. Cable resistance shown is for the circuit, ie. both cables in the pair. The value of 34Ω
per km (return) is used for 1 mm².
3. The maximum resistances shown for the fire wire circuits must include both cable
and fire wire (see Table 9.4.2 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).
7. The C23BEx detector (old type) would be compatible but has not been tested in this
configuration.
9.4.3.3 4 TERMINAL ISOLATED REPEATER WITH ZONE ADAPTOR UNIT
ZAU401
With the addition of the ZAU401 Zone Adaptor Unit (PA0838), lower-cost 4-terminal isolating
repeaters 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.
The ZAU401 can support up to 2mA of quiescent detector current and uses a 3k9 5% EOL
resistor.
Wiring of the ZAU401 and the isolating repeater to the panel is shown in Figure 9.4.3.3.
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).
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)
Measurement Technology Ltd MTL5061 (dual channel)