Dwyer LCR20 User Manual
INSTRUCTIONS FOR THE
LCR20 TEN INCH
CIRCULAR CHART RECORDER
LOVE CONTROLS
LOVE
®
April, 2003 Page 1 of 20 LCR20 IOM
a Division of Dwyer Instruments, Incorporated
PO Box 338 Michigan City, IN 46361-0338
(800) 828-4588 (219) 879-8000 FAX (219) 872-9057
❍
❍
www.love-controls.com
❍
Contents
Chapter 1 Overview
1-1 General ......................................................................................3
1-2 Model Identifi cation....................................................................3
Chapter 2 Installation
2-1 Unpacking..................................................................................4
2-2 Mounting ....................................................................................4
2-3 Case Location............................................................................5
2-4 Wiring Precautions.....................................................................6
2-5 Power Wiring..............................................................................7
2-6 Sensor Installation Guidelines ...................................................8
2-7 Thermocouple Input Wiring........................................................9
2-8 RTD Input Wiring .....................................................................10
2-9 Linear DC Input Wiring.............................................................10
2-10 Alarm Relay Wiring ................................................................10
2-11 Changing the Chart ...............................................................11
2-12 Marking Systems ...................................................................11
2-13 Replacement of Pen ..............................................................12
2-14 Battery Backup ......................................................................13
Chapter 3 Programming
3-1 Recorder Setup........................................................................14
3-2 Alarm Settings .........................................................................15
Chapter 4 Calibration
.......................................................................................................16
Chapter 5 Specifi cations
.......................................................................................................18
Chapter 6 Dimensions
.......................................................................................................19
Chapter 7 Green LED Troubleshooting Guide
.......................................................................................................20
LCR20 IOM Page 2 of 20 April, 2003
Chapter 1 Overview
1-1 General
The LCR20 is a microprocessor based 10 inch circular chart recorder.
Programmable alarm options combined with “ease of setup” provide the
fl exibility required for a multitude of recording applications.
The Ink style LCR20 is the fi rst recorder with “self documenting”
confi guration during initial setup. It can operate using standard or
competitive charts. The battery backup feature provides up to 48 hours of
recording in the event of a power loss, providing an additional degree of
protection for customer processes.
A unique setup template provides the user with an “on the spot” manual.
This setup template will also self document the current setup for quick
review by an operator.
These units are powered by a fi eld selectable 110/220VAC 50/60Hz.
supply. A 9 Volt battery allows for operation for up to 48 hours if the main
power supply fails. Standard inputs are programmable for thermocouple
types J, K, T, R, B and S as well as 4-20mA or 0-5 VDC.
Optional alarm relay is available and programmable for low, hi, or band in
latching or non-latching operation.
High accuracy, maximum fl exibility, fast response and a simple interface
are the main benefi ts of the LCR20 recorder.
1-2 Model Identifi cation
LCR20 -
Rotation:
1 = Counterclockwise
2 = Clockwise
Outputs:
0 = None
1 = 1 Relay (Pen 1)
2 = 2 Relays (1 for each pen)
April, 2003 Page 3 of 20 LCR20 IOM
Enclosure:
1 = Standard
2 = NEMA 4X
3 = Platen Mount
Chapter 2 Installation
Dangerous voltages capable of causing serious injury or death
are sometimes present in this instrument.
Before installation or beginning any troubleshooting procedures,
the power to all equipment must be switched off and isolated.
More than one power disconnect may be required.
Units suspected of being faulty must be disconnected and
removed to a properly equipped workshop for testing and repair.
Component replacement and internal adjustments must be made
by a qualifi ed maintenance personnel only.
To minimize the possibility of fi re or shock hazards, do not expose
this instrument to rain or excessive moisture.
Do not use this instrument in areas under hazardous conditions
such as excessive shock, vibration, dirt, moisture, corrosive
gases or oil. The ambient temperature of the areas should not
exceed the maximum rating specifi ed in Chapter 5.
2 - 1 Unpacking
Upon receipt of the shipment remove the unit from the carton and inspect
the unit for shipping damage.
If any damage due to transit , report and claim with the carrier. Write down
the model number, serial number, and date code for future reference when
corresponding with our service center. The serial number (S/N) and date
code (D/C) are labeled on the box and the platen of the unit. Make sure
that all items are accounted for:
1: Battery (for battery backup)
2: Installation manual
2 - 2 Case Location
Upon unpacking, fi nd a suitable location to mount the recorder before
wiring power to the unit.
Select a location that is well lighted, free form dust, dirt, or corrosive
fumes. The recorder should not be located near any sources of heat or
be subjected to sudden or extreme temperature changes. It should be
mounted on a rigid support that is not subject to vibration.
LCR20 IOM Page 4 of 20 April, 2003
2-3 Mounting
Make panel cutout to dimension shown in Figure 2-1.
Install both mounting clamps and insert the case into the panel cut out.
Dimensions are in millimeters (inches).
355.60
(14.000)
334.95
(13.187)
90.07
(3.546)
17.45
(0.687)
355.60
(14.000)
302.41
(11.906)
90.07
(3.546)
355.60
(14.000)
320.68
(12.625)
320.68
(12.625)
Figure 2-1
April, 2003 Page 5 of 20 LCR20 IOM
2-4 Wiring Precautions
Before wiring, verify the label for correct model number and options.
Switch off the power when checking.
Care must be taken to ensure that maximum voltage rating specifi ed
on the label are not exceeded.
It is recommended that power of these units to be protected by fuses
or circuit breakers rated at the minimum value possible.
All units should be installed inside a suitably grounded metal
enclosure to prevent live parts being accessible from human hands
and metal tools.
All wiring must conform to appropriate standards of good practice and
local codes and regulations. Wiring must be suitable for maximum
voltage, current, and temperature rating of the system.
Take care not to over-tighten the terminal screws.
Unused control terminals should not be used as jumper points as
they may be internally connected, causing damage to the unit.
Verify that the ratings of the output devices and the inputs as specifi ed
in Chapter 5 are not exceeded.
Electric power in industrial environments contains a certain amount of
noise in the form of transient voltage and spikes. This electrical noise
can enter and adversely affect the operation of microprocessor-based
controls. For this reason we strongly recommend the use of shielded
thermocouple extension wire which connects the sensor to the unit. This
wire is a twisted-pair construction with foil wrap and drain wire. The drain
wire is to be attached to earth ground at the sensor end only.
LCR20 IOM Page 6 of 20 April, 2003
Loading...