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900 Series V5.0: Installation Guide, April 1999

6.2.4. Calculation

Table 8: Calculation formula

Calculation for minimum device voltage (vmin) under worst case
conditions:

Total current:

(sum of quiescent and alarm current)

Total resistance:

Loop voltage:

( e.g. FP1100/1200/2000 : 27.6 V )

Vmin

V — (I x R)

Vmin > =

17V — no zone monitoring units

Vmin > =

20V — with zone monitoring units

Summary of Contents for 900 Series

Page 1: ...900 Series Installation Guide Revision 5 1 February 2000 ...

Page 2: ...echnologies B V COPYRIGHT SLC Technologies B V 2000 All rights reserved SLC Technologies B V grants the right to reprint this document for internal use only SLC Technologies B V reserves the right to change information without notice ...

Page 3: ...utput unit IO950 15 3 3 3 Three channel input output unit IU922 15 3 3 4 Mini Switch Monitoring Unit II950 16 3 3 5 Mini Switch Monitoring Unit with an interrupter II951 18 3 3 6 Switch monitor II952 19 3 3 7 Switch monitor plus II953 20 3 4 DIN rail mounted units 21 3 4 1 Isolators 21 3 4 1 1 Dual isolator IU950D 21 3 4 2 Fire monitoring controllers 22 3 4 2 1 Zone monitoring unit II955D 22 3 4 2...

Page 4: ...2 900 Series V5 0 Installation Guide April 1999 6 2 2 Alarm current 37 6 2 3 Loop resistance 37 6 2 4 Calculation 38 Index 39 ...

Page 5: ...ircuit loop using digital communication The following sections describe the connection and addressing of Aritech Series 900 devices in a fire protection system 2 1 1 Product overview 9xx Series The following table lists the Aritech Series 900 devices described in this manual Table 1 Aritech Series 9xx products Product Series 900 Series 950 Series 950M Marine Series 970 Intrinsically Safe Series 99...

Page 6: ...itch Monitor Unit Discontinued II952 Switch Monitor Plus II953 Din rail mounted units Duel Isolator IU950D Zone Monitoring Unit II955D Sounder Control Unit IO956D 1 Output IO955D 1 I O IO950D Switch Monitor Unit II952D Switch Monitor Plus II953D Intrinsically safe accessories Protocol Translator 1 Channel PT971 Protocol Translator 2 Channel PT972 Zener Barrier GBX70 2 2 Addressing Universal addres...

Page 7: ... fire monitor and the fire monitor s electronic circuits read the address Pre printed and pre punched Universal Address cards are available in sets that save time and increase accuracy during commissioning Figure 1 Address setting for 950 970 990 Series fire monitors 3 STANDARD PRODUCTS 3 1 Installing bases and manual call points 3 1 1 Mounting bases 3 1 1 1 Bases for the 950 990 Series fire monit...

Page 8: ...itor When installing fire monitors in confined spaces allow 110 mm from the surface for fitting and removal The Aritech 950 Series mounting bases are designed such that the fire monitors do not fit the isolator mounting base and vice versa The Series 900 range of fire monitors also does not fit the base of other Aritech range of monitors 3 1 1 2 Bases for IU950 isolators DB951 Figure 2 Wiring diag...

Page 9: ...ED positive supply one terminal R Remote indicator LED negative supply one terminal Isolator bases are polarity sensitive and can be damaged if connected to a reverse polarity supply capable that can deliver in excess of 1 amp Observe the polarity markings indicated behind each supply terminal Figure 3 Wiring diagram for DB960 DB961 À Isolating base Â Typical loop wiring Ä Control panel loop drive...

Page 10: ...R2 will have the same polarity as L1 and L2 respectively Figure 4 Wiring diagram for DB950R After installing the relay base and all other devices connected to the fire system you need to in situ smoke or heat test the associated detector Check that the fire detection and alarm system and the system controlled by the relay operate correctly Repeat this test with the fire panel supplied only by its ...

Page 11: ...001000 50 0100110 92 0011101 9 1001000 51 1100110 93 1011101 10 0101000 52 0010110 94 0111101 11 1101000 53 1010110 95 1111101 12 0011000 54 0110110 96 0000011 13 1011000 55 1110110 97 1000011 14 0111000 56 0001110 98 0100011 15 1111000 57 1001110 99 1100011 16 0000100 58 0101110 100 0010011 17 1000100 59 1101110 101 1010011 18 0100100 60 0011110 102 0110011 19 1100100 61 1011110 103 1110011 20 00...

Page 12: ...he Series 950 loop In clear air the receiver registers all the light sent by the transmitter If smoke from an incipient fire is present it rises and obscures the light to a certain extent The decrease in the amount of light registered by the receiver causes the beam detector to change to the alarm state The detector compensates for signal drift and if the limit of compensation has been reached a f...

Page 13: ... extra wiring is necessary Simple alignment During commissioning it is necessary to align the transmitter and receiver so that the beam is correctly projected at the receiver As the beam is invisible the alignment procedure has been traditionally complicated However the detector makes alignment simple a high brightness LED behind the receiver lens flashes while the transmitter is being aligned Onc...

Page 14: ...es with a capacitor to the zone output The capacitor must not exceed 50 µF nominal and must be connected as shown 3 2 3 Loop powered sounder AS950 The Series 950 loop sounder has an output of 85 dB A at 1 meter It is used with Series 950 analogue addressable fire monitors You can use 20 sounders on a Series 950 loop in 85 dB mode Series 950 loop sounders are designed to comply with BS5839 Part 1 1...

Page 15: ...g Each sounder must be connected in series with a polarising diode if this is not pre fitted in the unit 5 Connect the fault inputs to the contacts from the local power supply as shown in the Figure 8 If the fault input is not used link fault COM to fault N C as shown in the figure using a wire link Do not connect the local supply directly to the fault supply inputs To fault monitor the local supp...

Page 16: ...iver or similar tool Please refer to section 3 2 3 3 1 Single channel output unit IO955 Figure 9 Single channel output unit Eight terminals are provided Four for the loop connections incoming and outgoing with two for the positive supply One for the relay pole One for the normally open contact One for the normally closed contact One unused terminal Relay output 1 A 30 V max 30 V AC or DC N C COM N...

Page 17: ...e channel input output unit IU922 There are 26 terminals Four for the loop connections incoming and outgoing Four for the power supply in and out Three sets of six terminals each providing One relay pole One normally open contact One normally closed contact One logic input One supply out Series 950 loop Relay output 1 A 30 V Max 30 V AC or DC 20 kOhm EOL 4 7 kOhm N O input contact L1 ve L2 ve Opti...

Page 18: ...pply in ve supply out ve line out ve line in ve line out ve line in LED 1 O P LED 2 I P LED 3 O P LED 4 I P LED 5 O P LED 6 I P Addressing switch Custom chip Relay 3 Relay 1 Relay 2 TB1 24 VDC is required to activate the inputs Connect Ve supply out to local input 1 2 or 3 A 24 VDC power supply is required to operate the I O unit Maximum input resistance 100 kOhm Maximum input capacitance 200 nF 3...

Page 19: ...or short circuits 4 A software controlled remote indicator alarm LED output is supplied Connect an external LED to the remote outputs During installation the device should be correctly orientated if the LED needs to be visible The LED output drives a standard Aritech remote indicator Fire contacts Red Black Yellow Green Violet White Remote LED LINE 2 LINE 1 20 kOhm 10 1 3 W 1 kOhm fire contact Fir...

Page 20: ...t negative for consistency 3 There are two wiring options for the Mini Switch Monitor as shown in Figure 13 Connect the switch contacts to the switch inputs as desired Installing the 20 kOhm end of line resistor enables the switch inputs to be monitored for open or short circuits 4 A software controlled remote indicator alarm LED output is supplied Connect an external LED to the remote outputs Dur...

Page 21: ...e external switch connection and two unused connections Figure 14 Wiring diagram for the Switch Monitor Unit To install the switch monitor 1 Mount the Switch Monitor Unit The Series 950 switch monitor is not designed for outdoor use unless it is mounted in a suitable weatherproof enclosure 2 Connect the communication line to the L1 and L2 inputs The inputs are unpolarised but it is recommended to ...

Page 22: ... switch contacts to the switch inputs The switch input is monitored for open or short circuits 4 A software controlled remote opto isolated output is supplied Before connecting a beam detector or similar device first check to see if the device has a factory fitted Apollo compatible connection for the reset If not you must devise a circuit for remote resetting of the beam detector The circuit diagr...

Page 23: ...sitive A maximum of 20 Series 950 detectors can be installed between isolators Under normal operating conditions there is a low impedence between IN and OUT terminals of each isolator channel so that power and signals are passed to the next base in line If a short circuit or abnormally low impedance occurs across the loop the fall in voltage is sensed and the isolator isolates the negative supply ...

Page 24: ...and ancillary devices The zone monitor latches in the alarm state Use a 6 2 kW end of line resistor to monitor cables for open and short circuit faults Alternatively you can use an active end of line monitor in conjunction with diode bases and a capacitor of up to 50 µF fitted at the zone monitor wiring terminals The zone monitor is fitted with a bi directional short circuit isolator and is unaffe...

Page 25: ... 2 Alarm conditions are latched internally by the zone monitor You therefore must reset the alarm even if non latching conventional detectors are used 3 The zone monitor can be used to power and control intrinsically safe detectors via safety barriers with resistance values between 300 Ohm and 350 Ohm To use the Zone Monitor with intrinsically safe devices cut the wire link near the DIL switch Ref...

Page 26: ... IO956D Function The Series 950 DIN rail sounder control unit is used to control the operation of a zone of externally powered sounders and to report their status to the analogue control equipment Figure 21 Wiring connections Sounder control unit DIN mount Features The sounder control unit allows sounders to be operated continuously or be pulsed 1 second on 1 second off Sounders can be operated in...

Page 27: ...is required to disable the fault LED Set each of the other seven segments to 0 or 1 using a small screwdriver or similar tool refer to Table 2 DIL address settings Group address setting In group mode the Sounder Control Unit responds to an additional address called the group address which simultaneously activates groups of Sounder Control Units Individual units continue to respond to their own add...

Page 28: ...rent by using the DIL switch 3 4 3 2 Input output unit IO950D Figure 23 Wiring connections I O unit DIN mount N O COM NC Series 950 loop Line 1 and Line 2 are polarity insensitive but it is recommended to keep L1 negative for consistency Relay ON Relay output 1 A AT 30 V Max 30 VAC or DC Relay ON Switch closed Fault Series 950 loop Optional monitoring of an external voltage 1 V LOGIC 0 1 V LOGIC 1...

Page 29: ... monitors the state of one or more single pole volt free contacts connected on a single pair of cables and reports the status to analogue control equipment Figure 24 Wiring connections Switch Monitor DIN mount The Switch Monitor provides four input states to the control equipment Normal Fault Pre alarm and Alarm These are derived from the switched resistive values shown in Figure 24 The switch mon...

Page 30: ...ntrol equipment Normal Fault Pre alarm and Alarm It has a red LED to indicate an alarm and a yellow LED to indicate a fault condition Select the 30 second delay by using the eighth bit of the DIL switch Electrical considerations The Series 950 DIN rail Switch Monitor Plus is loop powered and operates at 14 28 VDC The Switch Monitor Plus accepts a maximum line resistance of 50 kOhm The end of line ...

Page 31: ...vices covers their characteristics as components of an intrinsically safe system and indicates that they can be used with a margin of safety in such systems The precise way to connect and configure the system is covered by an additional system certification The system parameters given below detail cable parameters and permissible configurations of monitors manual call points and safety barriers th...

Page 32: ...above must be marked in accordance with BS5501 Part9 EN50 039 The marking must include at least ApolloXP95 I S Fire Detection System BASEEFA No Ex94C2444SYST In safe area standard applications it is normal practice to connect the wiring as a loop with both ends terminated at the control panel In the event of an open circuit fault it is then possible to drive both ends simultaneously In a hazardous...

Page 33: ... The panel software should limit the maximum number of LEDs that can be illuminated simultaneously and in practice it is this parameter that causes the real limit on circuit loading The design of the LED drive circuits in the monitors is such that the addition of a remote LED will not increase the current drain on the circuit and remote LEDs can therefore be ignored in loading calculations Further...

Page 34: ...eration even with long safe area cables and below average loop voltages Aritech strongly recommends that these conditions are maintained wherever possible If cable runs are short or a small number of Intrinsically Safe spurs are involved it will be possible to work with higher cable capacitance Higher current loading will then be required to maintain pulse shapes Further guidance on these cases ca...

Page 35: ...eries analogue addressable fire panels the GBX70 galvanically isolating barrier must therefor be used Galvanically isolated barriers also known as transformer isolated barriers differ from conventional shunt zener barriers in that they provide electrical isolation between the input safe area and the output hazardous area This is achieved by the use of a DC to DC converter on the input side This is...

Page 36: ...bases The base for the intrinsically safe range is not identical to that for the standard range This ensures that standard monitors cannot inadvertently be fitted to an intrinsically safe system For full details of the Series 950 address mechanism refer to section 3 2 Fire monitoring controllers It has three double terminals and one single terminal L1 Line in and out double terminal L2 Line in and...

Page 37: ...nits The voltages mentioned only refer to the minimum DC voltage level The AC voltage level must be maintained at 5 V to 9 V above the DC level The calculation procedure and expressions shown in the following paragraphs give a rough method of checking whether the DC conditions are satisfied The calculations are for DC voltages only It cannot be assumed that AC voltage levels are acceptable if the ...

Page 38: ... 0 00075 Optical DP951 0 00034 DP971 0 00034 DP991 0 00065 Heat DT952 0 00025 DT953 0 00027 DT972 0 00025 DT992 0 00075 Multi sensor DP951T 0 0005 DP991T 0 00075 Isolator IU950 0 00012 IU950D 0 000047 DB960 0 000047 DB961 0 000047 MCP DM960 0 00023 DM970 0 00023 DM990 0 00060 Loop powered beam detector FD950 TX 0 010 FD950 RX 0 006 Zone monitor II955 0 004 II955D 0 004 Loop powered sounder AS950 0...

Page 39: ...inductance and capacitance RESISTANCE Device Code Resistance No Total Ohm Panel source FP1100 FP1200 FP2000 10 00 1 10 00 Isolators IU950 0 2 IU950D 0 2 DB960 0 2 DB961 0 2 Cable µF R mH Core to core Core to sheath No Total Ohm 2L1 0 MICC 0 017 Note Resistance in Ohm m core 2L1 5 MICC 0 011 0 534 0 19 0 21 Inductance in mH km 2L2 5 MICC 0 1168 Capacitance in µF km FP200 1 0 0 0181 FP200 1 5 0 0121...

Page 40: ...lation formula Calculation for minimum device voltage vmin under worst case conditions Total current I sum of quiescent and alarm current Total resistance R Loop voltage V e g FP1100 1200 2000 27 6 V Vmin V I x R Vmin 17V no zone monitoring units Vmin 20V with zone monitoring units ...

Page 41: ...952D switch monitor description 27 wiring connections 27 II953 switch monitor plus 20 II953D switch monitor plus wiring connections 29 II953D switch monitor plus description 28 II955 zone monitoring unit description 12 wiring diagram 12 II955D zone monitoring unit 22 Input output units description 14 mini switch monitoring unit II950 16 mini switch monitoring unit with interupt II951 18 single cha...

Page 42: ...14 Sounder circuit controller IO956 installing 13 wiring diagram 13 Sounder control unit IO956D description 24 Switch monitor II952 installing 19 wiring options 19 Switch monitor II952D description 27 wiring connections 27 Switch monitor plus II953 circuit for remote resetting 20 installing 20 wiring options 20 Switch monitor plus II953D description 28 Three channel input output unit IU922 wiring ...

Page 43: ...900 Series V5 1 Installation Guide February 2000 41 ...

Page 44: ...14 3259 999 2 ...

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