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For stand alone units, alarm inputs must be connected to the alarm panel outputs. An eight way (three way for –24V) 
terminal block (TB1) is provided for connection of the alarm inputs.

For 11zstu, alarm inputs for channels 9, 10, 11 and AC Fail are made at the terminal block TB1 on the expansion board. 
Connections for alarm inputs 9, 10, 11 and AC Fail are made to terminals marked 9 though 12 of TB1 respectively. The 
connections are made in exactly the same way as for alarm inputs 1 to 8.

Alarm Inputs

For plug-in units, connections to the alarm panel are made by the two connectors which protrude through the base. 

When fitting the unit, check that SK1 pins 1 to 8 and SK2 pins 9 to 16 correspond to pins 1 to 8 and 9 to 16 on the 

alarm panel.
The signal present on each pin is as follows:

 

SK1  

Function  

SK2  

Function

 

Pin 1  

Alarm Input 1 

 Pin 9  

+12V

 

Pin 2  

Alarm Input 2  

Pin 10 

 0V

 

Pin 3  

Alarm Input 3  

Pin 11  

Not Used

 

Pin 4  

Alarm Input 4 

Pin 12  

+5V

 

Pin 5  

Alarm Input 5 or 7 (see below)  

Pin 13  

Not Used

 

Pin 6 

Control Output  

Pin 14 

 Alarm Input 6

 

Pin 7  

Not Used 

Pin 15  

Line Fault (output)

 

Pin 8 

Low battery (input)  

Pin 16  

Alarm Input 8

Alarm 5 can be transmitted as either channel 5 or channel 7. This is achieved by fitting LK2 in either position 5 or 7. This 
link is not fitted on the stand alone units, as alarms 5 and 7 can be transmitted independently.

Summary of Contents for 3GSTU-12V

Page 1: ...User Installation Guide 3G STU LPS 1277 Issue 3 Cert No 1270a...

Page 2: ...ves by compliance with safety speci cations EN60950 User Safety EN41003 Network Safety 89 336 EEC Electro Magnetic Compatibility Directive as amended by 92 31 EEC by compliance with EMC speci cations...

Page 3: ...Line and Earth 11 Mains Fail 12 Tamper 12 Power Connection 12 Alarm Inputs 13 Output Relays 14 Control Output 14 Return Path Signalling Output RPS 14 Line Fault Output 15 Telephone Line Selection LK1...

Page 4: ...Introduction...

Page 5: ...ailure may not be immediate or catastrophic Electro Static Discharge ESD can cause hidden damage to components which will a ect their reliability It is recommended that precautions are taken against d...

Page 6: ...minals The power supply relay outputs and alarm inputs are connected by means of hard wiring to the terminal blocks on the 3GSTU 3GSTU 24V Has the same functionality as the 3GSTU 12V but operates from...

Page 7: ...following alarm panels Scantronic 4700 9100 9600 9800 9500 II via adapter board Scantronic 808 806 840I Castle Care Tech 2300 2500 2700 2900 Modern Alarms 3000 3200 3400 11zstu The 11 Zone STU consis...

Page 8: ...3GSTU 24x 22 2 V 0 2 V The 3GSTU PLI variant supply requirements are 12V Supply Voltage 10 V DC to 15 V DC 12V Supply Current 80 mA typ 12V Supply Ripple noise 200 mV p p max 5V Supply Voltage 4 75 V...

Page 9: ...r must ensure that the rating of the power supply is greater than the combined rating of the STU and any other apparatus drawing power from the power supply The STU supply requirements are detailed on...

Page 10: ...Installation...

Page 11: ...ied or positive removed Note for a 3GSTU PLI plug in variant all alarm inputs must be positive applied with the exception of alarm input 4 which must be positive removed d The type of line connection...

Page 12: ...n and connect it to the terminal marked The other end of this cable must be connected to a good electrical earth Failure to t an earth cable will prevent proper operation of the unit and will invalida...

Page 13: ...ed at the beginning of the Installation section the power supply must be totally powered down switch o mains and disconnect the battery before making these connections For 3GSTU 12V units connect a 12...

Page 14: ...e two connectors which protrude through the base When tting the unit check that SK1 pins 1 to 8 and SK2 pins 9 to 16 correspond to pins 1 to 8 and 9 to 16 on the alarm panel The signal present on each...

Page 15: ...uch as a bell the device should be suppressed using a suitable protection diode Control Output The Control Output is a general purpose output which is controlled by the Alarm Receiving Centre It may b...

Page 16: ...d to normal phone lines PSTN mode should be used This mode monitors the DC line voltage and triggers the Line Fault output within 100 seconds of a line break For STUs connected to private wires RedDIR...

Page 17: ...Installing the NVM...

Page 18: ...re Once tted the NVM can be re programmed after careful removal using an IC extractor If the unit has already been commissioned see the note on page 4 The STU and alarm system must be totally powered...

Page 19: ...5 Negative Applied Positive Applied 6 Disabled Enabled AC Fail 7 Negative Applied Positive Applied 8 Disabled Enabled Remote Programming Once installed the NVM can be re programmed remotely by the ARC...

Page 20: ...screen displays MASTER NONE COPY 9314 C46 Press and the screen displays SIMPLE 8400 8440 9056 PROGRAMMING Press once or twice for 7300 until the screen displays READ MODIFY COPY SOCKET DATA Press and...

Page 21: ...nergised when the landline has failed press If it is to be not energised when the landline has failed press 1 0 or 1 0 or Press to advance the address display to YES 0 0 3 3 If the Telephone Line Type...

Page 22: ...advance the address display to YES 0 0 3 4 For all variants Press 0 Press in sequence The address display changes to A 4 7 D 0 0 4 7 0 YES 6 7 5 Key in the rst two digits of the hard ID press yes and...

Page 23: ...osing channel 1 8 0 0 7 0 Use keys to to designate alarm pins that are enabled A state of 1 means the pin is enabled and a state of 0 means the pin is disabled For re stu channels 4 to 8 must be disab...

Page 24: ...ce for each unacknowledged alarm on pins 1 to 8 1 to 11 for11zstu and is then o for a few seconds STU Status LED Meanings The status of the 3GSTU is indicated on the LEDs in priority order highest rst...

Page 25: ...the number of alarms triggered If during the commissioning procedure power to the STU is interrupted even momentarily the above procedure will have to be repeated Testing the System Once the STU has...

Page 26: ...n all of the above tests have been successfully completed all the alarm triggers should be removed and the ARC asked to acknowledge all of the unacknowledged alarms The STU red LED should be o and the...

Page 27: ...d an audible chirp used to transmit alarm messages and check for the presence of the STU These chirps will not normally be heard but they can occasionally occur as the telephone handset is lifted This...

Page 28: ...PSTN Yes 0 dB 6 dB 32 00110010 PSTN Yes 0 dB 9 dB 42 01000010 PSTN Yes 3 dB 3 dB 52 01010010 PSTN Yes 3 dB 6 dB 62 01100010 PSTN Yes 3 dB 9 dB 72 01110010 PSTN Yes 6 dB 6 dB 82 10000010 PSTN Yes 6 dB...

Page 29: ...tus LED is o or the number of ashes of the red LED stays the same The green STU Status LED intermittent ash a An alarm previously transmitted on the same channel has not been acknowledged by the ARC b...

Page 30: ...y low condition Possible mains failure or faulty battery No activity on the STU no LEDs on The power is o Check for 12V dc at TB3 V with respect to TB3 0V Regular chirps are heard every 2 to 3 minutes...

Page 31: ...ut more about Redcare call us free on 0800 800 628 or email redcare bt com British Telecommunications 2017 Registered o ce 81 Newgate Street London EC1A 7AJ Registered in England no 1800000 Never comp...

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