NatComm Multiple Input Unit User manual

MULTIPLE INPUT UNIT
Accessory for the Talking Display Unit
Multiple Input Unit
User Guide
For Technical Assistance
Please Phone: [phone]

Page 2 National Communications
DESCRIPTION
Our MULTIPLE INPUT UNIT (MIU) accessory has been designed to
allow up to 12 separate switches or sensors to be connected to the one
Talking Display Unit (TDU).
The Talking Display Unit (TDU) can then play one of up to 12 separate
messages, held in its memory, depending on which MULTIPLE INPUT
UNIT sensor has been triggered.
This means that :
Sensor 1 when triggered will cause Message 1 to play
Sensor 2 when triggered will cause Message 2 to play
Sensor 3 when triggered will cause Message 3 to play
Sensor 4 when triggered will cause Message 4 to play
Sensor 5 when triggered will cause Message 5 to play
Sensor 6 when triggered will cause Message 6 to play
Sensor 7 when triggered will cause Message 7 to play
Sensor 8 when triggered will cause Message 8 to play
Sensor 9 when triggered will cause Message 9 to play
Sensor 10 when triggered will cause Message 10 to play
Sensor 11 when triggered will cause Message 11 to play
Sensor 12 when triggered will cause Message 12 to play
Each Sensor Trigger will cause the appropriate message to play, as
indicatedabove.
The TDU can only play one message at one time.
While the TDU is playing a message, the default settings of MIU allow
it to detect further triggering by the attached sensors and it will hold in
buffer up to 10 separate further triggers.
Then when each message is complete, the MIU will instruct the TDU to
play the message corresponding to the next triggering action.
MIU is provided with a TWO YEAR FACTORYWARRANTY.

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DESCRIPTION Cont.
During Message play MIU can be configured to handle further sensor
triggerring in 3 separate modes :
MODE 1 (Default Mode) MIU will STORE up to 10 further triggers and
then instruct TDU to play these Messages in trigger order. This is the
defaultmode.
MODE 2 - MIU will IGNORE any further triggering while playing a
Message. Triggering will only take place when a Message is NOT
PLAYING.
MODE 3 - MIUwill INTERRUPTan existingMessage. Inthissituationa
trigger during Message Play will cause the existing Message to STOP
and the NEW MESSAGE WILL PLAY.
The appropriate MIU Triggering Mode is set by REMOVING JUMPER
CONNECTORS which are linking PINS that are accessed through a
small hole located on the underside of MIU (see below).
Note : Jumpers are not in order
To Set MODE 1 - Leave all 3 JUMPERS in place.
To Set MODE 2 - Remove JUMPER 1.
To Set MODE 3 - Remove JUMPERs 1 and 2.
Jumper 1
Jumper 3
Jumper 2

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MODEL TABLE
The MULTIPLE INPUT UNIT (MIU) accessory is available in 6
separate configurations :
MIU-4 - Provides input capability for up to 4 (N.O. sensors)
MIU-4a - Provides input capability for up to 4 (N.C. sensors)
MIU-8 - Provides input capability for up to 8 (N.O. sensors)
MIU-8a - Provides input capability for up to 8 (N.C. sensors)
MIU-12 - Provides input capability for up to 12 (N.O. sensors)
MIU-12a - Provides input capability for up to 12 (N.C sensors)
N.O. = For use with Normally Open switches (standard version).
N.C. = For use with Normally Closed switches (alternative version).

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INSTALLATION
SwitchesorSensorsconnect totheMULTIPLEINPUTUNITviaafemale
DB25connector.
A separate male DB25 connector, with exposed terminals is supplied
withthis unitto allowdirect solderconnection ofcables leadingto each
sensor.
Each sensor has been allocated two specific pin positions and should
be connected to the DB25 connector as per the diagram and table on
page 7.
Sensors can be located up to 100m from the MIU unit, or greater than
100m from the MIU if low resistance wiring is used.
Communication:BetweentheMULTIPLEINPUTUNIT andtheTALK-
INGDISPLAYUNITisachievedviaastandard3pairtelephonecable.A
short 3 pair telephone cable is supplied with the MIU. This can be
substituted if necessary with any 3 pair cable with a length up to 100m.
Power:fortheMIUissuppliedfromtheTALKINGDISPLAYUNITviathe
same 3 pair cable.
Note: a separate power adaptor jack has been fitted to the MULTIPLE
INPUTUNITtoallowfordirectconnectionofanoptional12VACor12VDC
input(minimum300mA, polarityindependent).
This additional power input will only be required under the following
circumstances :
1) To provide power for the attached sensors, where additional
accessoryunitssuchastheSPEAKERSWITCHINGUNITorAUDIO
SWITCHING UNIT are also used in the same application.
2) Where PIR’s are used with the MULTIPLE INPUT UNIT AND the
completesystemistobe rundirectfroma12Vbatterysource.Inthis
situation, the 12V battery source should be fed to the TDU and the
MIU.
Theuseofthe optional12VACor12VDCinputwillpreventpossibilityof
‘Brown Out’ of one or more of the accessories or sensors.

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SENSOR DETAILS
Switches for use with the MIU can be Normally Open (standard model) or
Normally Closed (alternative model). See models on page 4.
1. NORMALLY OPEN SWITCHES donot needanymodification.
2.NORMALLYCLOSEDSWITCHES
SWITCHES for use with the MIU Alternative Version need to be “normally
closed”and alsoneed tobe modifiedwithacurrentlimitingresistor,as per
the diagram below :
PIR SENSORS needtohave1k resistorsfitted asper thediagram below:

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DB25 PIN OUT TABLE
1niP desUtoN
2niP -1hctiwS 41niP +1hctiwS
3niP -2hctiwS 51niP +2hctiwS
4niP -3hctiwS 61niP +3hctiwS
5niP -4hctiwS 71niP +4hctiwS
6niP -5hctiwS 81niP +5hctiwS
7niP -6hctiwS 91niP +6hctiwS
8niP -7hctiwS 02niP +7hctiwS
9niP -8hctiwS 12niP +8hctiwS
01niP -9hctiwS 22niP +9hctiwS
11niP -01hctiwS 32niP +01hctiwS
21niP -11hctiwS 42niP +11hctiwS
31niP -21hctiwS 52niP +21hctiwS

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SPECIFICATIONS
Dimensions(all in mm) :106 (W) x 106 (D) x 43 (H)
Weight :220g
Optional Power Supply :240VAC to 12VAC or 12VDC
Power Connector :2.5mm barrel connector
Power Consumption :Idle - 0.5 Watts
Communications Port :RJ 11 6 pin
Multiple Sensor Input Port :DB25 Female
C-Tick Compliance :Supplier Number N782
WARRANTY
This device is guaranteed against defects from workmanship for a period
of two years (24 months) from the date of purchase.
In the event of failure, you should return the product, along with proof of
purchase date, and a written statement about the nature of the problem.
The obligation is solely to repair or replace the product. The warrantor
is not liable for any incidental or consequential damages due to such
defects.
This Warranty shall not apply to any unit which has been subject to
alteration, modification, abuse, negligence, accident, external voltage/
lightning surge or used in any manner contrary to these instructions.
The user is responsible for freight costs to the repair point. The warrantor
will be responsible for freight costs in returning this unit back to the
user.
Damage caused to this device or attached equipment, by lightning strikes
or over voltage surge is not covered under this warranty.
CASE SEALED AT FACTORY
OPENING THE CASE VOIDS THE WARRANTY