Noby UK Noby-21 - Manual

1F Mill Fold
Elland Road
Ripponden
HALIFAX
West Yorkshire
HX6 4DJ
www.noby.co.uk
[email protected]
Tel: +44(0)1422 823395
Fax: +44(0)1422 823661
The Noby-21 Relay Module is designed
for use in both 12v and 24v alarm
systems. The DPDT voltage-free contacts
permit switching of two independant
circuits. Bridging the two contact sets
together creates an effective single
contact with a switching capacity of up to 4
amps. An on-board LED displays the
activation state of the relay. Two adhesive
mounting pillars are supplied with the
Noby-21.
Typical applications include:
• switching high currents directly from
the battery (via an in-line fuse).
• signal isolation between various
parts of a system operating at
different voltage supplies.
Figure 1 illustrates a 2-wire connection which is suitable for most outputs capable of delivering in excess of 20mA.
Note that a link must be connected between the +’ve Vs terminal and the signal input as shown. The arrangement
shown in Figure 2 is applicable where only a weak signal output is available from by the alarm equipment. In this
case the Noby-21 is powered from an auxillary supply voltage, with the relay now being driven by the signal line.
THIS DEVICE IS NOT INTENDED FOR SWITCHING 230VAC OR OTHER DANGEROUS
VOLTAGES, AND ANY ATTEMPT TO DO SO MAY CREATE AN ELECTRICAL SHOCK HAZARD.
Technical Specification Value Unit
Absolute Maximum Supply Voltage 30 VDC
Supply Voltage Range 10 - 30 VDC
Operating Current: Vs = 12v
Vs = 24v
15
18
mA
Standby Current 0 mA
Relay Type DPDT
Contact Power Rating 60 VA
Contact Current Rating @28VDC 2.0 A
Maximum Contact Current 2.0 A
Isolation Voltage: coil to contacts
contacts to contacts
1000 VAC
Insulation Resistance: coil to contacts
contacts to contacts
> 1000 Mohm
Signal Input Resistance 4.7 kohm
Signal Input Operating Threshold > 4.0 V
Operating Status LED Yes
Coil Suppressor Diode fitted Yes
PCB Dimensions 55 x 30 mm
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0v 0v Vs Vs NC NC NO NO
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NC NC NO NO
Alarm Output
from 12v
24v equipment OR
Vs=12v 24v
Aux. Supply
OR
Link
0v Vs
Signal Output
from 12v
24v equipment
OR
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