Dwyer LCT316 User Manual
Bulletin PC-LCT316
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REMOTE
COUNTDOWN
INPUT
WIRING DIAGRAM
POWER
SUPPLY
OUT
OUTPUT
12
3
4
567
Series LCT316 Low Cost Digital Timer
Specifications - Installation and Operating Instructions
The Series LCT316 Low Cost Digital Timer provides accurate
countdown timing for a variety of applications. The timer can be
triggered remotely using the digital input terminals or locally via
the set button. Time intervals can be set up to 999 minutes or
seconds. The Series LCT316 has an internal buzzer to alert
when the time interval has expired.
INSTALLATION
NOTICE
Unit must be mounted away from vibration, impacts, water and
corrosive gases.
• Cut hole in panel 2.80 x 1.14 inches (71 x 29 mm).
• Apply silicone (or rubber gasket) around the perimeter of the
hole to prevent leakage.
• Insert unit into hole of panel.
• Slide removable fitting clips onto unit from the back until
secure to panel.
• Wiring diagram as seen in figure A is displayed on the top of
the unit.
SPECIFICATIONS
Operating Temperature Range: 32 to 158°F (0 to 70°C).
Control Output Ratings: Relay, SPST NO, 16A at 250 VAC
resistive.
Weight: 5.6 oz (158.8 g).
Status Light: LED shows time and operation.
Inputs: Digital input for start and reset.
Supply Voltage: 115 VAC, 230 VAC, 12 VAC/DC, 24
VAC/DC depending on model.
Power Consumption: 4VA.
Agency Approvals: CE, UR.
Figure A
Phone: 219/879-8000 www.dwyer-inst.com
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com
PARAMETERS
Description
Ut
Top
Bc
Man
Parameter Descriptions
Ut = Time unit - Minutes (min) or Seconds (sec).
Top = Maximum Time Interval - For local starts via the set key.
Bc = Alarm - Buzzer sounds when the countdown expires or
Man = Manual Control - When the timer countdown is not
Programming Parameters
• Press set for 8 seconds. The first parameter label is shown
• 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
NOTICE
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.
Time unit
Maximum time interval
Alarm
Manual control
Remote starts count down from this value.
is stopped by the user via the SET key.
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.
on the display (Ut).
or wait one minute and the display will automatically exit
programming mode.
Units
option
time unit
option
option
Range
Min/Sec
1 to 999
On/Off
On/Off
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.
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.
NOTICE
The time interval cannot exceed the pre-programmed “Top”
parameter.
©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: info@dwyer-inst.com
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