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Mains Power Up 

1)

 

With no external connections made to the PSU, connect the mains input wires to the terminal block, 

ensuring that the mains isolator (disconnect device) is open

. Fasten wiring in place with cable tie to 

saddle. 

Note: Equipment must be earthed. 

2)

 

Apply mains input. Confirm that all LED indicators flash on briefly proving integrity of indicating circuits. 

Ensure that the green Mains LED then stays illuminated and that the yellow Fault LED flashes after 

approximately 3 s (indicating a disconnected battery). 

3)

 

Disconnect the mains power. 

Load Output and Remote Signalling 

4)

 

Connect the EPS and GEN PSU Fault outputs to the appropriate inputs of control equipment if remote fault 

monitoring is required. 

5)

 

Connect the load (output) wiring as shown in Figure. 3. Cable tie to saddle provided (adjacent to exit 

hole). 

 

Figure 3 - Connections 

Battery Select 

 

  

 Mains ON 

 

Diagnostic LED 

Fault LED 

L E N 

Mains 

 

Temperature 

Sensor connect 

 

+  - 

To Load 

 

6)

 

Re-apply mains. Verify that the green Mains LED illuminates and the yellow Fault LED flashes after 

approximately 3 s (disconnected battery). 

7)

 

If connected, verify that the EPS Fault monitor shows a 

closed 

contact and the GEN PSU Fault monitor 

shows an 

open 

contact. 

8)

 

Perform a full functional test of system including full alarm condition. 

9)

 

For 17 Ah batteries fit the link to the Battery select pins as indicated, for 7 or 2.1 Ah batteries remove link, 

as shown in Figure 3. 

 

Figure 4 – Terminal labels 

 

 

 

 

 

 

 

 

 

Standby Battery 

LOAD FUSE 

2.5 Amp 

BATT FUSE 

2.5 Amp 

 

 

 

 

+ - | + -  |Temp| GEN  EPS 

Load |  Batt |sense|  Fault 

 

10)

 

Mount the appropriate batteries as shown above. Where a dual box solution is used all cabling between 

the two boxes should be routed to use separate case entry/exit holes from other cabling and use suitable 

bushes to protect the cables

C

OMMISSIONING

 

www.acornfiresecurity.com

www.acornfiresecurity.com

Summary of Contents for STX2402 Series

Page 1: ...relay fault output signal i loss of mains and ii battery fault charger fault and loss of output In addition there is an optional plug in serial interface that can provide diagnostic and fault reportin...

Page 2: ...I 2 x 17 Ah 12 V PS12170 NP17 12I Battery Charging Constant current bulk charging to 80 capacity within 24 hours Float charging to 100 within 48 hours Eco charging and check every 24 hours for up to 8...

Page 3: ...tion Mains present Battery healthy None OPEN CLOSED Standby Mode Mains lost Battery driving load Investigate loss of mains CLOSED OPEN Fault Present Blown fuses Battery fault Internal fault Investigat...

Page 4: ...lled no further than 10cm from the CIE and close coupled byconduit This unit must be fed from a mains power source having a separate approved disconnect device and fitted with a fuse or other over cur...

Page 5: ...eing used to power the CIEdirectly 8 Fix to wall or other structure in correct orientation i e with hinge on left hand side using screws of sufficient size and length through the mounting holes 9 Prot...

Page 6: ...hole Figure 3 Connections Battery Select Mains ON Diagnostic LED Fault LED L E N Mains Temperature Sensor connect To Load 6 Re apply mains Verify that the green Mains LED illuminates and the yellow Fa...

Page 7: ...t the green Mains LED illuminates and the yellow Fault LED extinguishes 18 If connected verify that the EPS Fault monitor shows a closed contact and the GEN PSU Fault monitor shows a closed contact 19...

Page 8: ...batteries must be removed and disposed separately via an appropriate approved battery disposal route in accordance with all national and local regulations Package used batteries safely for onward tra...

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