4321 typical installation – Museum Technology Source 4321 Count Down Timer User Manual
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4
UP
SET
RUN
READY
RUN
POWER
MUSEUM TECHNOLOGY SOURCE MOVEL 4321 TIMER
POWER IN
12 VDC
1 2 3 4
1 2 3
1 2
TO DISPLAY
RELAY OUT
START
TO DISPLAY:
1 +12 VDC
2 GROUND
3 DATA +
4 DATA -
RELAY OUT
NORM OPEN AND
NORM CLOSED
CONTACTS
TO START EXTERNAL
DEVICE AT END OF
COUNT
START TERMS
MOMENTARY
CONTACT STARTS
COUNTDOWN
DIP SWITCHES TO
SELECT VARIOUS
OPERATING
MODES
PLUGGABLE TERMINAL BLOCKS
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POWER SUPPLY
OPTIONAL SECOND DISPLAY
DISPLAY
DEVICE TO BE
STARTED
(VIDEO, AUDIO ETC)
START SWITCH
2 PAIR CABLE
POWER AND DATA
FRONT PANEL
REAR PANEL
4321 TYPICAL INSTALLATION
Museum Technology Source Inc.
15 VDC @900 mA
Note: If distance between Control Box and Display
causes excessive voltage drop, a local power
supply for the display may be used. The Control Unit
provides 15 VDC, and the Display requires at least 12 VDC,
allowing for a 3 volt drop in wiring.
The local power supply should provide at between 12 and 17 VDC
at 500 mA.
Revised July 9 2001
4321_install.fcw
323 Andover St Wilmington MA 01887
800-729-6873 fax 978-657-7132
www.museumtech.com