The Patol 1200 Series of equipment is specifically designed for use by OEMs such that fire control functions may be integrated into multi-discipline system configurations and/or incorporated into special application control panels with a cohesive and rational approach.

The 1200-HCM is a DIN rail mounting control module providing the necessary functionality to realise a basic fire protection scheme with the minimum of additional components. The module accommodates a single detection (trigger) circuit, monitored sounder & extinguishant actuation outputs, an auxiliary fault monitoring circuit, and volt free fire contacts.

Connections are provided for user specified control panel fascia indicators and controls, together with a composite Fire/Warning/Reminder audible device. The primary features of the unit are:-

• DIN Rail Mounting - OEM Designer's 'building block'


• Detection circuit - open & short circuit fault monitored.


• Sounder circuit - fuse protected - open & short circuit fault monitored.


• Actuator output - fuse protected - open circuit fault monitored.


• Fire contacts - two sets - volt free change over.


• Fascia annunciator connections - Fire, Common Fault, System On, Audible.


• Flashing Indicator / Audible annunciation sequences.


• Control switch connections - Sounder Activate, Lamp Test, Accept, Reset.


• Supply & Auxiliary fault signal inputs - Common fault (healthy) output.


• Extinguishant actuation inhibit switch.


• Module mounted diagnostic LEDs & control push-buttons.

Application

The unit is primarily intended for use where there is a requirement to integrate a limited fire protection function into a larger control equipment scheme, or in specialist applications where parameters, such as environmental conditions, require a control cabinet design that is not readily accommodated by commercially available fire alarm panels.
The 1200-HCM is particularly suited for incorporation into control schemes where the protected aspect is all, or a portion, of that equipment its self.
The DIN rail mounting construction of the module permits design engineers to treat the unit, in respect of the internal configuration of industrial type control panels, in an identical manner to other DIN rail mounting devices such as relays, PLCs, process monitoring modules etc.
Similarly, the associated panel fascia mounted indicators and controls may be user chosen to meet any application specific requirements, and to provide a cohesive operator presentation in respect of other system control surface lamps and switches.
The unit operates from a nominal 24 Vdc supply and whilst the module may be readily employed in conjunction with a dedicated fire alarm PSU/Charger/Battery (suitable devices are available from Patol), the system can also be configured such that overall system supplies can be utilised. This at the designer's discretion  based on the specification / requirement of any particular application.
The 1200-HCM operates with industry standard smoke/heat detectors, break glass units, sounders, beacons, extinguishant actuators, etc.
Whilst the unit is primarily intended for special fire protection applications that by their very nature are likely to be outside the scope of National Standards, the design of the the module in respect of it's monitoring specification and operation is such that schemes compliant with the principle requirements of BS-5839 can be realised.

Configuration

Figure 1 shows a block schematic of a typical system which sub-divides into four principal aspects. -  The 1200-HCM unit including it's integral diagnostic LEDs and maintenance controls, a display fascia fitted with user specified operational indicators and controls, an appropriate power supply, and the protection equipment (detectors, sounders, extinguishant mechanism, shutdown network etc.).
For clarity the diagram shows a simplified logical flow arrangement. The operational sequences of signals, indications and alarms are more refined than depicted and are defined in the text of the Operation section following.

Operation

A  primary feature of the unit is that flashing indicator, new fault notifications, & staged audible warning states are sequentially annunciated. The following details typical operation :-

FIRE ALARM
Fire Detection Initiated
Trigger Circuit  I/P

• Module Red Fire LED  Flashing


• Fire Lamp Output  Flashing


• Actuator Output ON


• Fire Sounder Output ON


• Fire Relay Contacts Abnormal


• Module Audible  Continuous


• Composite Audible Output Continuous

• Module Red Fire LED Steady


• Fire Lamp Output Steady


• Fire Sounder Output OFF


• Module Audible Bleep ¤


• Composite Audible Output Bleep ¤

FAULT WARNINGS
A Fault Warning is Initiated on any of :-

• Detector  Removed


• Detector Cable O/C or S/C fault


• Sounder Cable  O/C or S/C fault


• Sounder Circuit Fuse Ruptured


• Actuator Device Element O/C


• Actuator Cable O/C fault


• Actuator Inhibit Switch INHIBIT position


• Actuator Circuit Fuse Ruptured


• AUX Fault Signal Abnormal


• AUX Fault Signal Cable O/C or S/C fault


• Supply/Charger Fault Signal Abnormal


• Supply/Charger Signal Cable O/C or S/C fault

* Module Diagnostic LED for each basic condition.

Connections

Sounder Circuit  (Terminals 1 & 2)

Sounder (beacon) devices should be polarised types of nominal 24 Vdc operation. The units should be wired in parallel and the circuit terminated with a 4K7 EOL. (Max load < 0.5 Adc)

Supply Fault Signal (Terminal 19)

The input signal may be directly connected to a PSU TTL output ( Normal - High ) where the TTL & PSU output 0 V are common.
It is recommended that the TTL device o/p is loaded with a 100R resistor in order to both monitor & protect the o/p device & TTL supply.
Volt free contacts may also be employed in conjunction with a 2K4 EOL.
(n/c series contact  -  n/o shunt contact)

Common Signal (Terminal 21)

The output is an open collector type signal which is On (Low) in the Normal state, Off (Open) in the Fault state. The output may be employed with a normally energised relay coil, or to directly signal TTL etc.

General - For other connections see Fig. 2:-

Electrical connections are made via compression leaf screw terminals:-

General Specification

Sounder circuit:-
  O/C & S/C Fault Monitored
  Reverse polarity relay switched
  Fuse protected 500 mA

Actuator circuit:-
  Chemical protractor (METRON) compatible
  O/C element/cct. fault monitored
  Monitoring current < 7 mA
  27R actuator current limit resistor
  Relay switched - 500 mA fuse

Fire Contacts:-
  2 off - volt free change over
  Rated 1 A - 30 V dc

Control Inputs:-
  Accept / Silence
  Reset
  Lamp Test
  Sounder Test
  Switch Low - 0 Vdc common -ve

Lamp Outputs:-
  Fire Indicator
  Common Fault Indicator
  System On Indicator
  100 mA  low switch common +ve

Audible Output:-
  Fire - Continuous signal
  Fault / Reminder - Pulsed signal
  50 mA  low switch common +ve

Supply Fault :- 
  0/C-S/C fault monitored (input signal)
  TTL (5V - 0V) signal compatible
  N/O or N/C contact with 2K4 EOL

Auxiliary Fault:- N/O or N/C signal contact
  0/C-S/C fault monitored 4K7 EOL

Supply Voltage:- 21 - 29.5 Vdc

Supply Current-
  45 mA Quiescent @ 28 V (module only)
  140 mA Max (Alarm & Test)

Mounting:-
  DIN Rail - 35mm
  Asymmetric or  Symmetric

Connections:- Screw terminals

Weight:-  0.5 Kg (nominal transport)

Indications:-  (Module LEDs)
  Fire - Red LED
  Detector Fault - Yellow LED
  Actuator Fault - Yellow LED
  Auxiliary Fault - Yellow LED
  Supply Fault - Yellow LED
  Sounder Fault - Yellow LED
  System On - Green LED

Integral Controls:-
  Accept/Silence push-button
  Reset push-button
  Lamp Test push-button
  Actuation Inhibit switch

Common Signal:-
  Healthy Output (Not Fault)
  50 mA  low switch common +ve

Trigger circuit:-
  0/C-S/C fault monitored 4K7 EOL
  Fault < 50R < Alarm < 1K6 (nom)
  Fault < 2mA < Normal (nom)