Museum Technology Source 4321 Count Down Timer - Manual (Page 3)

1 4
RUN READY RUN
POWER
MUSEUM TECHNOLOGY SOURCE MOVEL 4321 TIMER
POWER ON
LAMP
DISPLAY DUPLICATES
REMOTE READOUT
IN "SET" MODE USE
TO INCREMENT TO
DESIRED TIME UP TO SET
TIME, DOWN
FOR NORMAL
OPERATION LIGHTS
WHEN
READY FLASHES
WHILE
COUNTING
FRONT PANEL, 4321 COUNT DOWN TIMER
POWER IN
15 vdc
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
REAR PANEL, 4321 COUNTDOWN TIMER
FRONT AND REAR VIEWS
4321 COUNT DOWN TIMER
MUSEUM TECHNOLOGY SOURCE INC
323 Andover St Wilmington MA 01887
+
GND 4 3 2 1
+12 VDC GROUND
DATA + DATA -
INCREMENT
SET
ALL MODES: RELAY OUTPUT PULSES AT ZERO
DISPLAY DRAWS 600 MA MAX
DATA IS RS-485
MAY 20 1999
0 0 0 0 COUNT STARTS WITH MOMENTARY CONTACT ACROSS START TERMINALS.
ADDITIONAL START CONTACTS IGNORED.
0 0 1 1 SAME AS ABOVE EXCEPT ADDITIONAL START COMMAND WHILE COUNTING
WILL CAUSE DISPALY TO REVERT TO PRESET NUMBER
0 0 0 1 DISPLAY COUNTS DOWN CONTINUOUSLY
0 0 1 0 DISPLAY COUNTS DOWN AS LONG AS CONTACT
IS MAINTAINED ACROSS START TERMINALS
DIP SWITCH MODE SETTINGS 0 = DOWN 1 = UP
Revised July 9 2001 800-729-6873 fax 978-657-7132
www.museumtech.com