Dwyer LCT316 - Manual (Page 2)

©Copyright 2009 Dwyer Instruments, Inc. Printed in U.S.A. 8/09 FR# R7-443676-00 Rev.1 (ECR# 25347)
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
Parameter Descriptions
Ut
= Time unit - Minutes (min) or Seconds (sec).
Top = Maximum Time Interval - For local starts via the set key.
Remote starts count down from this value.
Bc = Alarm - Buzzer sounds when the countdown expires or
is stopped by the user via the SET key.
Man = Manual Control - When the timer countdown is not
desired, the timer can be operated to open and close
the relay for indefinite periods of time. Switch the relay
output off and on by means of the SET key.
Programming Parameters
•
Press set for 8 seconds. The first parameter label is shown
on the display (Ut).
• Move to the desired parameter with the UP and DOWN keys.
• Press SET to view the value on the display.
• The value can be modified with the UP and DOWN arrows.
• Press SET to store the value and exit to next parameter.
• Press SET and DOWN at the same time to quit programming
or wait one minute and the display will automatically exit
programming mode.
If the timer is activated via digital input during a previously
running countdown, the timer will reset to the Top parameter and
initiate a new countdown.
Local Operation
The user can set and activate the timer using the front keys.
• During Standby mode, press SET and “0” will be shown on
the display.
• Modify the time interval with the UP and DOWN keys.
• Press SET to enter it and start the timer (close the relay
output).
• To deactivate the timer (open the relay output), hold SET
down for 1 second.
The time interval cannot exceed the pre-programmed “Top”
parameter.
Ut
Top
Bc
Man
Description
Time unit
Maximum time interval
Alarm
Manual control Range
Min/Sec
1 to 999
On/Off
On/Off Units
option
time unit
option
option
PARAMETERS
NOTICE
NOTICE
BUZZER
When the timer interval has expired, an internal buzzer will beep
two times. This double beep will only occur once.
LED INDICATIONS
Upper LED
Flashes during timer countdown.
Lower LED This indicates the system is in Manual Control
Mode.
DISPLAY MESSAGES
In normal operation, the countdown time will be shown on the
display.
• Run = Briefly displays when the timer is initiated.
• End = Briefly displays on the screen when the timer is
stopped or at the end of time cycle.
• Off = Standby Mode.
• On or Off = Displayed during manual control.
• Er
= Memory Error
MAINTENANCE
Upon final installation of the Series LCT316 Low Cost Digital
Timer, no routine maintenance is required. A periodic check of
system calibration is recommended. The Series LCT316 is not
field serviceable and should be returned if repair is needed (field
repair should not be attempted and may void warranty). Be sure
to include a brief description of the problem plus any relevant
application notes. Contact customer service to receive a return
goods authorization number before shipping.
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