Tyco F3200 - Page 119

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Document No: LT0255 F3200/NDU AS4428.1 Installation Manual
Applications
Issue 1.04 30 June 2004 Page 6-29
TERMINAL ISOLATED REPEATER (CONTINUED)
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 (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.
It 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 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)
Measurement Technology Ltd MTL5061 (dual channel)
FIG 6.4.3.3
F3200 WITH ZAU401 & 4 TERMINAL IS REPEATER
Programming & Limitations
The circuit should be programmed as Mode 1 (standard). Voltage bands B1 and B3 can be
left at default, though it is better to program B1 as fault.
Note that all
alarms from the ZAU401 will give voltage band B2 i.e. the FIP cannot
differentiate between short-circuiting MCP and detector operation, and voltage B1
represents a short on the circuit between the FIP and the ZAU401 (i.e. internal wiring fault).
1 BATT+
2 ZONE+
3 EOL+
4 EOL-
5 ZONE-
6 BATT-
T+ 3
TC 2
T- 1
ZAU401 (Rev 2)
(PA0838)
EOL* To P an e l
Zone Circuit
+
-
+
-
Panel
24V
{
KHD0_
OR
KFD0_
OR
MTL5061
+
-
Ex DETECTOR
EOL
3k9
5%
* EOL to suit Panel
SAFE AREA HAZARDOUS AREA
4-Terminal Isolatin
g
Repeater
Ex DETECTOR