!
AVAILABLE IN 5 VDC AND 10 to 30 VDC VERSIONS
!
0.3" (7.6 mm) HIGH, 6 DIGIT DISPLAY
!
BI-DIRECTIONAL TIMING
!
DISPLAY SCROLLING (SELECTABLE)
!
SOLID-STATE CURRENT SINKING OUTPUTS
!
PROGRAMMABLE TIMED OUTPUTS
!
REMOTE RESET CAPABILITY
!
SIMPLIFIED FRONT PANEL PROGRAMMING
!
ABILITY TO LOCK OUT FRONT PANEL FUNCTIONS
!
ON-LINE SELF-TEST
!
SEALED FRONT PANEL CONSTRUCTION (NEMA 4X/IP65)
!
NON-VOLATILE MEMORY (E
2
PROM)
!
4 TIME RANGES
0.01 SECONDS
0.01 MINUTES
0.001 SECONDS
0.001 MINUTES
DESCRIPTION
The LNXNT presettable Timer is an economical and reliable solution to dual
preset level timing requirements. This unit features current sinking input
configurations, programmable timed outputs, non-volatile memory, and many
other features that satisfy most dual preset timing applications.
The LNXNT Timer has two main timing actions, Reset to Zero
(RTZ)
and
Reset to Preset (
RTP
). There are sixteen modes of operation.
All parameters are programmed through the front panel buttons. The LNXNT
Timer has an internal non-volatile memory device which eliminates the need for
battery back-up. When power is removed or interrupted, this device maintains all
data set-ups necessary for system operation. A Program Disable terminal is
provided, which prevents accidental changes or tampering by unauthorized
personnel to the presets or timed output values. The front panel reset button can
be enabled or disabled by a rear panel DIP switch. This timer has an on-line self-
test, which can be run at any time without losing time or missing a preset value.
Power, input, and output connections are made via fixed terminal blocks at
the rear of the unit. DIP switches at the rear of the unit are used to set the input
configuration and the desired mode of operation.
The LNXNT Timer has a sealed high impact plastic bezel and meets NEMA
4X/IP65 specifications for wash-down and/or dust, when properly installed.
SAFETY SUMMARY
All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Do not use this unit to directly command motors, valves, or other actuators
not equipped with safeguards. To do so, can be potentially harmful to persons
or equipment in the event of a fault to the unit.
SPECIFICATIONS
1.
DISPLAY
: 6-digit, 0.3" (7.6 mm) high LCD display.
2.
POWER REQUIREMENTS
: 25 mA @ 5 VDC (±5%) or
25 mA @ 10 to 30 VDC.
Power supplies must be Class 2 or SELV rated.
3.
RUN INPUT
: Accepts switch contact closures and NPN Open Collector
outputs and similar types of current sinking sensors.
V
IL
= 0.5 V max., internally pulled up to 5 VDC through a 10 K
Ω
resistor
(I
SNK
= 0.5 mA). Response time = 1 msec.
(This unit operates with VCM E
through H modules)
4.
TIME ACCURACY
: ±0.01%
5.
TIME RANGES:
Time
Max. Display
0.01 sec
9999.99
0.001 sec
999.999
0.01 min
9999.99
0.001 min
999.999
6.
CONTROL INPUTS:
Activate low (V
IL
= 0.5 V max.), internally pulled up
to 5 VDC through a 10 K
Ω
resistor (I
SNK
= 0.5 mA).
Remote Reset
: Response time = 10 msec. A low resets the unit and
deactivates outputs.
Program Disable
: A low inhibits the changing of presets and timed outputs,
as well as testing outputs in self-test.
MODEL LNXNT - SHORT CASE DUAL PRESET TIMER
DIMENSIONS In inches (mm)
Note: Recommended minimum clearance (behind the panel) for
mounting clip installation is 2.7" (68.6)H x 4.0" (101.6)W.
CAUTION:
Read complete instructions prior to
installation and operation of the unit.
Bulletin No. LNXNT-B
Drawing No. LP0308
Released 9/02
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion-controls.com
1
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
