INSTRUCTIONS FOR THE LCR10 TEN INCH CIRCULAR CHART RECORDER LOVE ® April, 2003 LOVE CONTROLS 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.
Contents Chapter 1 Overview 1-1 General ......................................................................................3 1-2 Model Identification....................................................................3 Chapter 2 Installation 2-1 Unpacking ..................................................................................4 2-2 Mounting ....................................................................................4 2-3 Case Location....................................................
Chapter 1 Overview 1-1 General The LCR10 is a microprocessor based 10 inch circular chart recorder. Programmable alarm options combined with “ease of setup” provide the flexibility required for a multitude of recording applications. The Ink style LCR10 is the first recorder with “self documenting” configuration during initial setup. It can operate using standard or competitive charts.
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.
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) 355.60 (14.000) 90.07 (3.546) 17.45 (0.687) 355.60 (14.000) 302.41 (11.906) 320.68 (12.625) 90.07 (3.546) 320.68 (12.
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 specified 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.
2-5 Power Wiring The unit is supplied to operate at 110/220VAC 50/60Hz. Check that the installation voltage corresponds with the power rating indicated on the product label before connecting power to the unit. The recorder uses AC power when it is operating normally. The battery backup option will allow the recorder to operate for approximately 48 hours in case of a power loss.
2-6 Sensor Installation Guidelines Proper sensor installation can eliminate many problems in a control system. The probe should be placed so that it can detect any temperature change with minimal thermal lag. In a process that requires fairly constant heat output, the probe should be placed close to the heater. In a process where the heat demand is variable, the probe should be close to the work area. Some experiments with probe location are often required to find this optimum position.
1 J3 T/C Voltage/ Current 1 2 3 4 Optional Relay J1 1 J3 1 2 3 4 P2 1 J3 J1 1 J3 Relay 1 Optional Relay Connections Relay 2 RTD J5 P1 1 J2 1 J2 Note: Internal circuitry shown at right of terminations, external to the left. 1 2 3 4 (Connected to power input) Figure 2-3 Input/Relay wiring - PCB layout 2-7 Thermocouple Input Wiring Thermocouple input connections are shown in Figure 2-3.
2-8 RTD Input Wiring Two-wire RTD’s should be used in short lead lengths, if possible, for the purpose of accuracy. A 0.4 ohm lead resistance of a two-wire RTD will produce 1 degree C temperature error. RTD connection are shown in Figure 2-4, with the compensating lead connected to terminal 4. For twowire RTD inputs, terminals 2 and 4 should be linked. The three-wire RTD offers the capability of lead resistance compensation provided that the three leads are of same gauge and equal length.
2-11 Changing the Chart Press and releasethe CHANGE CHART button (#3), Figure 3-1 (pg. 14). The pen will move to the left of the chart and the LED begins blinking rapidly. Unscrew (counterclockwise) the chart “hub” knob at the center of the chart. Remove the old chart paper and position the new one so that the correct time line coincides with the time line groove on the left side of the chart plate. Refer to Figure 2-5 (pg. 13) for the location of the time line groove.
2-13 Pen Installation / Replacement Recorders that are equipped with fiber tipped cartridge pens will have a cartridge that is color coded “red”. The pen cartridge is securely fastened to the metal pen arm using a special “U” clip tab. For ease of replacement, it is suggested that the two (2) screws that hold the pen arm be loosened and the pen cartridge and metal pen arm be removed as an assembly. Refer to Figure 2-5, pg.13, for the location of the pen arm screws.
2-14 Battery Backup Having the 9 volt DC battery back-up in place, will allow the recorder to continue to function normally for approximately 48 hours in the event of a power failure. The battery strap and battery holder are located on the front of the chart plate (refer to Figure 2-5). In order to change the battery, you must open the recorder case door. Note: Use only NEW 9 volt alkaline replacement batteries.
Chapter 3 Programming 3-1 Recorder Setup In order to configure the recorder, you will need the recorder SET-UP CHART, P/N R18-270 for CCW rotation or P/N R18-272 for CW rotation. This chart contains the configuration categories for the recorder (Probe Input, Inner Chart Values, Outer Chart Values, Scale Units, Chart Rotation Speed, Input Averaging and Relay Opotions). 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Place the SETUP CHART on the recorder. Press and release the CHANGE CHART key (3).
3-2 Alarm Settings Alarm setpoint values are selected by positioning the pen to the actual value on the recording chart. Alarm settings can be changed or viewed after a CHART CHANGE, recorder setup, or during initial power up. To set the alarm setpoint during normal recording operation, complete the following steps. Press and release the CHANGE CHART key ( 3 on Figure 3-1). Wait until the pen moves off scale AND the LED stops flashing quickly and goes to a steady on.
Chapter 4 Calibration 4-1 Pen Arm Calibration Pen calibration is a two point calibration. To check and/or adjust the recording pen(s) calibration to the inner and outer graduations of the chart, Perform the following. 1. Remove power to instrument and remove the battery. 2. With all power removed, press and hold the CHANGE CHART key (3). While holding the CHANGE CHART key(3), re-apply power. Release key upon applying power, either AC or battery, which ever is convenient. 3.
4-2 Probe Offset Adjustment (pen offset) This recorder has been accurately calibrated at the factory. Before making any adjustments, this instrument should be in service for 24 hours. Thereafter, if any adjustment is required, perform the following procedure. 1. Place a Certified Test indicator alongside the recorder’s sensor probe in a monitored controlled condition. 2. Once the input has leveled out, compare the position of the pen on the recorder to the reading on the test device. 3.
Chapter 5 Specifications Input: Thermocouple: Type J, K, T, R, S, B. RTD: 100 Ohm Platinum DIN Curve (0.00385 ohms per ohm per degree C) Process: 0 to 5 VDC, 250 Ohms impedance. 4 to 20 mA across 250 Ohms. Cold Junction Accuracy: ±0.2°C @ 25°C ambient. Cold Junction Error: ±0.2°C @ 25°C ambient. Input Filtering: Programmable, 0, 2, 4, 8, 16, 32, 64, 128 seconds. Recording: Chart Size: 254 mm (10 inches) Recording Accuracy: ±0.5% of span (100 division span) Sensor Break: Full scale pen < 10 seconds.
Input Ranges Input Signals SENSOR TYPE RANGES Thermocouple J Thermocouple K Thermocouple T Thermocouple R Thermocouple S Thermocouple B RTD 100 Ohm Plt. DIN DC Voltage: 0 to 5 VDC, linear. DC Current: 4-20mA, linear. -130 to 760°C -130 to 1360°C -200 to 400°C 0 to 1650°C 0 to 1650°C 100 to 1824°C -210 to 440°C -202 to 1400°F -202 to 2498°F -328 to 752°F 32 to 3002°F 32 to 3002°F 212 to 3315°F -346 to 824°F 0 to 100% of the chart span. Chapter 6 Dimensions Dimensions are in millimeters (inches). 355.
7 - GREEN LED Troubleshooting Guide 7 - 1 LED LIGHT SEQUENCE GUIDE 1.) LED on steady and pen(s) within chart range, unit is recording normally. 2.) LED on steady and pen(s) above 100% ring indicates unit is in “CHART CHANGE” mode. Action: Press and release “CHART CHANGE” key to return to normal recording mode. 3.) LED flashing RAPIDLY and pen(s) within chart range indicates battery voltage is low. Action: Replace battery. 4.
