Page 4 Issue 4: June 93
AC IN: These are connected to the mains transformer via the two AC leads, (their
polarity is not critical).
AUX +/-: These provide auxiliary power for PIRs and other devices within the protected
area. The system current consumption can be determined by measuring the
voltage across the two test pads located between the terminal blocks for circuit
1 and circuit 2. Multiply the reading by 10 (eg. 30mV 300mA, 75mV
750mA) to give the current reading. The output is protected by a 1A fuse [FS1],
located near the terminal blocks (see Fig 1). Failure of [FS1] is indicated as a
tamper.
NOTE: THE TOTAL POWER CONSUMPTION MUST NOT EXCEED 750mA.
CIRCUITS 1-5: The zones can be wired using any combination of two different zone wiring
methods, called DOUBLE POLE (4 wire) or END OF LINE RESISTOR (2 wire).
- DOUBLE POLE: This is the conventional wiring method using
two wires for the alarm loop (wired across the [ZONE] terminal
blocks) and two for the tamper loop (wired across the [TAMP]
terminal blocks) (see Fig 2).
- END OF LINE RESISTORS: This method uses resistors on the
detection circuit, one (4K7) fitted across
each
alarm contact and
the other (2K2) in series with the loop at the furthest point (End
of Line). The 2 wires are connected between the outer terminal
blocks of the [ZONE] & [TAMP] connections, (see Fig 2).
The maximum number of detection devices connected to any zone is ten.
EXIT
TERM: This feature is required in some Police force areas and consists of a normally
open" push button positioned outside the last exit, used to finalise the setting
procedure. The Exit Terminator may be used with Timed Exit (when the
system will set within 5 seconds of pressing the button) or Last Exit setting
procedures (the button must be pressed after the Final Exit has been
operated), and can be programmed to Chime thereby acting as a door bell
when the system is unset. (See PROGRAMMING).
If shorted on power up, the panel will "factory reset", i.e. the factory default
settings will be loaded and any previously programmed data will be lost. The
Exit Terminator uses a single conventional wiring loop (i.e. no resistors) and
tamper protection is provided by the Aux Tamper loop, (see Fig 2).
KEY SW/F.EXIT This input can have one of two functions depending on how the system is
programmed:
KEYSWITCH - A "normally open" keyswitch can be connected to the control panel for
setting, part setting and unsetting the system. When the system is unset,
operating the switch will initiate the setting sequence and, when Set, the same
action unsets the system. Any combination of keyswitch or keypad can be used
in the setting/unsetting sequence; for example the system could be set using
the keyswitch and then unset via the keypad or visa versa. To determine the
operation of the keyswitch ,see PROGRAMMING.
The keyswitch may be of either the spring return momentary action type, or a
standard keyswitch with the key captive in the closed position.
