Brooks Firetracker FT128 CIE - Alarm State; Disconnected State; High Current State; Normal State

Technical / Programming Manual
FT128 Rev 2.2
25
4.1.2.1 Normal State
This is the normal Zone Line Input state, i.e. no alarm, no fault, etc. and the nominal voltage
is 24 V
DC
20
. From this state any other state can be reached / activated.
4.1.2.2 High Current State
The maximum current consumption limit
21
for the Zone Line Input is exceeded, which is
indicating that e.g. too many alarm points are connected. This generates a fault condition
in FT128. From this state any other state can be reached / activated except the open circuit
state.
4.1.2.3 Alarm State
An alarm point (or more) on the zone line is in alarm state and the alarm limit
21
for the zone
line is exceeded, which activates fire alarm in FT128. In this state, the short circuit, open
circuit, high current and low voltage states cannot be reached / activated. After the alarm
reset, the Zone Line Input will return to the normal state.
4.1.2.4 Short-Circuit State
The short circuit current limit
21
is exceeded, indicating short-circuit on the zone line, which
normally generates a fault condition in FT128 but instead, a fire alarm can be activated, if
this option is selected via EBLWin.
4.1.2.5 Open Circuit State
The open circuit current limit
21
is passed, indicating very low zone line current consumption
or no current, i.e. the End-Of-Line device is not detected which generates a fault condition
in FT128. From this state any other state can be reached / activated.
4.1.2.6 Disconnected State
Via menu H8/S2 (Disconnect / Re-connect zone line), the Zone Line Input can be
disconnected
22
, i.e. there is no voltage on the zone line. From this state no other state can
be reached / activated.
4.2 8 Relays Expansion Board 4581
Up to four 4581 boards can be used, see Table 3, page 22.
Each board has to be programmed via EBLWin for an address, set via jumpers "JP2-
JP4" as shown in Table 4 page 23.
The 4581 board has eight programmable relay outputs (0-7).
Connections to "J1:1-16" and "J2" according to drawing F729.
Each output has to be programmed via EBLWin for the following:
 Type, i.e. output for Control, Alarm devices, etc.
 Output signal period (steady, pulse, delay, etc.)
 Logic, i.e. normally open (NO) or normally closed (NC) contacts
23
 Control expression (one or more trigger conditions)
For more information, see chapter “Output Programming”, page 81.
20
Allowed voltage 15-28 V
DC
.
21
This limit is dependent on the selected input mode.
22
This is indicated in FT128 by the LED "Disablements".
23
Relay contact ratings: Max. 2A @ 30 V
DC
.