The Odyssey Intelligent smoke and heat detectors all fit the Odyssey Intelligent standard base (200-111).
The base is a zero insertion force base with dual finger receptacles of stainless steel into which the detector terminals slide. Cable connections of up to 2.5mm diameter are made via captive cable clamps.
There are four double terminals and one single one.
The remaining single terminal is isolated and can be used to provide continuity of an earth or shield.
Universal address cards, known as XPERT cards are supplied with all bases.
The base has a ‘one way only’ fit and detectors can be locked into the base by a grub screw.
The Isolating Base (200-113) senses and isolates short circuit faults on loops and spurs.
The base is loop–powered, polarity sensitive and accepts the XPERT card to set the associated device address.
In short-circuit conditions the integral yellow LED is illuminated. The detector associated with the base remains active under short- circuit conditions.
Power and signals to the affected section are restored automatically when the fault is cleared.
The Isolating Base is intended for use with equipment using the squarewave communication protocol.
Under normal conditions, a low impedance is present between the –IN and –OUT terminals of the base, so that power and signals pass to the next base in line. If a short-circuit or abnormally low impedance occurs, the fall in voltage is sensed and the base isolates the negative supply in the direction of the fault. The isolated section is tested using a current pulse every five seconds. When the short-circuit is removed, the power will automatically be restored.
If it is a requirement that no device is lost in the event of a single short-circuit fault, every detector should be fitted to an isolating base.
In applications where it is not necessary to use an isolating base for each detector, up to twenty detectors or equivalent surge current may be installed between isolating bases.
‘Standalone’ isolators, which have their own bases, may be used instead of isolating bases. The isolators are wired to a loop between detectors or other devices
All detectors in the Odyssey conventional range fit into standard mounting bases. The bases are of 100mm diameter and have five terminals marked according to their function: Line 1 in, line 1 out, line 2 in and out, remote indicator negative, earth.
Detectors are polarity insensitive, so that identification of positive and negative lines is only required.
if a remote LED is fitted. An earth connection is not required for either safety or correct operation of detectors. The earth terminal is provided for tidy termination of earthed conductors or cable screens and to maintain earth continuity where necessary. Bases have a wide interior diameter for ease of access to cables and terminals and there are two slots for fixing screws at a spacing of 51 to 69mm. Detectors fit into bases one way only and require clockwise rotation without push force to be plugged in.
Odyssey Conventional Base Range
The Odyssey Say-Wire Base, 200-302, is designed to allow Odyssey detectors to be used in `Say-Wire' detection and alarm systems and can only be used in conjunction with a Say-Wire compatible control panel.
The base incorporates a circuit which detects the removal of a detector head. If a detector is removed from the base, the control panel will give a fault signal.
Odyssey Relay Bases are primarily intended for use with control units using 4-wire detector supply and alarm initiating circuits. Where local codes allow, they may also be used in 2 and 4-wire circuits to provide volt-free control signals to an auxiliary system such as an automatic door closer.
They are not suitable for use in systems where it is specified or required that operation of the auxiliary system shall be fail-safe and must not be used with any other type of detector.
The Standard Odyssey Relay Base, 200-303, provides one set of volt-free, changeover (form C) contacts that change state when the detector signals an alarm.
The Odyssey Sounder Base is a high -efficiency conventional alarm sounder incorporating a base for the Odyssey conventional range of detectors. The product offers 32 tones which are shown in table3.
The sounder base can be secured to a conduit box, a sounder ceiling plate, or surface mounted. Sounder Bases should be located to ensure correct operation of the detector in accordance with the detector manufacturer's recommendations and local regulations or codes of practice.
Note: The sounder is classified as a Type A device according to EN54-3, le, is suitable for indoor use only.
The sounder base is designed so that separate detector and sounder circuits can be connected. The sounder circuit is connected using the PCB mounted 4-way terminal block. The detector circuit is connected using the terminals marked L1 1N, Ll OUT and L2 around the rim of the base in the same way as a standard detector base. Two separate earth terminals are provided to allow the screen termination of earth conductors to maintain continuity between cables that contain an earth conductor. As this product is designed for use on conventional systems with separate detector and sounder circuits, the earths should not be connected together.