Noby UK Noby-420 2-Zone User Manual

Page 9

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Noby-420 Installation & Programming Instructions Rev3

Page 9 of 12


NOBY-420 SPECIFICATION

Power Supply Unit

Value Unit

Comments

Mains Supply Voltage

230 +10% -6%

VAC

Mains Supply Frequency

50 / 60

Hz

Mains Power Rating

40

VA

Nominal Battery Voltage

24

volts

Regulated PSU charger voltage

27.3

volts

Regulated PSU charger current

• 20 minute rating
• continuous

1.5
1.0

A
A

Fused Outputs:
F1 Aux

24v

F2

Sounder 1 Circuit

F3

Sounder 2 Circuit

F4

Battery +’ve

F5

30VAC Transformer Secondary

1.0
1.0
1.0
3.0
2.0

A
A
A
A
A


F1A

20mm Quick Blow

F1A

20mm Quick Blow

F1A

20mm Quick Blow

T3A

20mm Slow Blow

T2A 20mm Slow Blow

Standby Battery Current:

60

mA

2 zone + 2 sndr EOL resistors fitted

Low Voltage Monitor

21.0

volts

Battery Capacity Monitor

Yes

10s load test every 12hrs

Zone Circuits

Value Unit

Comments

Detection Zones

2

No. Detectors Per Zone

20

based on 100uA per detector

End Of Line (EOL) Resistor

4700

ohms

Open Circuit Monitoring

R > 10,000

ohms

Short Circuit Monitoring

R < 150

ohms

Fire Alarm Detection

150 < R< 1600

ohms

Head Removal Monitoring

Yes

• requires schottky diode bases
• sampled at 60s intervals

Sounder Circuits

Value Unit

Comments

Sounder Circuits

2

Maximum No. Sounders Per Circuit

50

based on 20mA per sounder

Maximum No. Sounders Total

62

based on 20mA per sounder

End Of Line (EOL) Resistor

4700

ohms

Open Circuit Monitoring

> 10,000

ohms

Short Circuit Monitoring

< 1K

ohms

Fire Alarm DPDT Relay

1.0

A

rated at 1.0A/30Vdc per contact set

Signal Inputs

Value Unit

Comments

Class Change “CC”

200

kohm

24volt +’ve going signal

Fault Input

200

kohm

24volt signal (polarity programmable)

Cabinet

Value Unit

Comments

Dimensions (width x height x depth):

335 x 325 x 75

mm

1.2mm powder coated steel

Shipping Weight

4.2

kg








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