red lion LIBC Series Manual

Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net
MODEL LIBC - LIBRA SERIES COUNTERS (LCD & LED)
DESCRIPTION
The Libra Series of presettable counters is an economical and reliable solution
to one or two preset level requirements. The LIBC1 and LIBC1E are the single
preset versions and the LIBC2 and LIBC2E are the dual preset versions. All four
units have a solid-state output and a Form C relay output for each preset. These
units feature input configuration programmability, a full complement of control
inputs, programmable timed outputs, non-volatile memory, and many other
features which will satisfy most any single or dual preset level requirement.
The Libra counters have two main counting actions, Reset to Zero (RTZ) and
Reset to Preset (RTP). With RTZ, the counter resets to zero and counts up (if
UP/DN terminal is at high level) and activates the outputs when the preset
value(s) are reached. When RTP is used, the unit starts at the preset value and
counts down (if the UP/DN terminal is at low level) and activates the output
when zero is reached. For the 2-preset version, the count starts at preset 2 and
counts toward zero. Output 1 fires when preset 1 value is reached and output 2
fires when the count reaches zero. There are eight modes of operation for the
single preset unit and sixteen modes of operation for the dual preset unit.
The timed output is programmed through the front panel buttons and can be
programmed from 0.01 sec. to 99.99 sec. (The unit's timed output is set at the
factory to be 0.1 sec.) The Libra counters have an internal non-volatile memory
CAUTION: Read complete instructions
prior to installation
and operation of the unit.
DIMENSIONS In inches (mm)
For Sales and Support, Contact Walker EMD • Toll-free: (800) 876-4444 • Tel: (203) 426-7700 • Fax: (203) 426-7800 • www.walkeremd.com
CAUTION: Risk of electric shock.
Note: Recommended minimum clearance (behind the panel) for
mounting clip installation is 2.7" (69 mm) H X 4.5" (114 mm) W.
1
ABILITY TO LOCK OUT FRONT PANEL FUNCTIONS
q
SEALED FRONT PANEL CONSTRUCTION (NEMA 4/IP65)
q
ONE OR TWO PRESET VERSIONS
q
0.5" HIGH LIQUID CRYSTAL DISPLAY OR 0.4" HIGH LED DISPLAY
q
ACCEPTS INPUT COUNT RATE UP TO 2500 CPS
q
BI-DIRECTIONAL COUNTING
q
SOLID-STATE CURRENT SINK OUTPUT(S)
q
FORM C RELAY OUTPUT(S)
q
PROGRAMMABLE TIMED OUTPUT (0.01 sec to 99.99 sec.)
q
SIMPLE FRONT PANEL FOR PROGRAMMING EASE
q
FRONT PANEL PROGRAMMABLE DECIMAL POINTS
q
MEETS DIN PANEL MOUNT SPECIFICATIONS
q
REMOTE RESET CAPABILITY
q
NON-VOLATILE MEMORY (E
q
ON-LINE SELF-TEST
q
device which eliminates the need for battery back-up. When input power is
removed, this device will maintain all data necessary for system operation. A
Program Disable terminal is available, which is used to prevent accidental
changes or tampering by unauthorized personnel to the preset(s) or timed output
value(s). The front panel reset button can also be enabled or disabled by a rear
panel DIP switch. These counters also have an on-line self-test, which checks
all display driver and micro-processor hardware. The self-test can be run at any
time without losing counts or missing a preset value.
Power, input, and output connections are made via removable terminal strips
located at the rear of the unit. These strips can accept one #14 AWG stripped
wire. DIP switches at the rear of the unit are used to program the input
configuration and to set the desired operating modes.
The Libra Series counters have a metal die-cast front bezel, which is sealed,
and meets NEMA 4/IP65 specifications for wash-down and/or dust when
properly installed. Mounting clips are provided for easy panel installation.
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.
Bulletin No. LIBC-J
Drawing No. LP0103
Released 10/04
2
PROM)