INSTALLATION MANUAL LC 200 Electronic Overload Guard Software versione PW0501 R 0.3
CONTENTS MAIN FEATURES LC 200 TECHNICAL FEATURES Page 2 SYMBOLS Page 3 WARNINGS Page 3 IDENTIFICATION DATA PLATE Page 3 WIRINGS POWER SUPPLY Page 4 LOAD CELLS WIRING Page 4 LOGIC INPUT WIRING Page 5 RELAY OUTPUTS WIRING Page 5 RS485 SERIAL WIRING Page 5 RS232 SERIAL WIRING Page 6 (OPTIONAL) ANALOG OUTPUT WIRING Page 6 SUMMARY OF WIRINGS Page 7 Page 1
LC 200 TECHNICAL FEATURES Power supply 12-24 Vac / Vdc 15 % Power consumption 4 VA Isolation Class III Operating temperature (outside air) -10 C to +60 C (relative humidity: < 85% non-condensing) Storage temperature -20 C to +70 C Weight display Status LED s Keyboard 6 digit red LED s, 7 segments, 14 mm. high 5 red LED s Ø 3 mm (3 LED s used for relay output status) 4 keys (tactile feedback) Overall dimensions 115 mm x 93 mm x 65 mm (L x H x D) Mounting DIN rail profile DIN rail frame material Polyammide 6.6 UL 94V-0 self-extinguishing Connections Pull-out terminal blocks, pitch 5.08 mm Load cells (Max. 4): Input sensitivity 0.02 V / count Linearity < 0.01% of full scale Temperature drift < 0.001% of full scale / C A/D converter resolution 24 bit Input signal range From -3.9 mv/v to +3.9 mv/v Digital filter 0.1 Hz to 10 Hz, selectable Weight decimal digits 0 to 3 decimal digits Zero and Full Scale calibration Data sheet or Dead weight Load cells cable fail check Logic outputs (alarms) Logic input Serial port Baud rate Max. cable length 2 relays (N.O. contact). 1 relay (N.O. & N.C. contacts). Contact rate: 24 Vdc/Vac 0.5 A N 1, optoisolated, dry contact Rs232 or Rs485 Up to 115 kbps (default 9600 b/s) 15m (Rs232) - 1000m (Rs485) Analog output (optional) Voltage: 0 10 V / 0 5 V Current: 0 20 ma / 4 20 ma Impedance Voltage: min. 10K Current: max. 300 Resolution 16 bits Linearity 0.03% of full scale Temperature drift 0.001% of full scale / C Calibration method Digital (via keyboard) Programme code memory Data memory Conformity to Standards 32 Kbytes FLASH re-programmable on board via RS232 2 Kbytes EN61000-6-2, EN61000-6-3 for EMC EN61010-1 for Electrical Safety Page 2
SYMBOLS A list of the symbols used in the manual to attract the reader s attention follows below:! Caution! Specialized personnel only must perform this operation Read the following instructions carefully i Further information WARNINGS An isolation switch must be installed near the instrument in order to be able to cut the power supply at any time i Environmental pollution degree: 2 REMARKS This manual aims to use texts and figures in order to provide the operator with instructions and information about the basic criteria for the installation and correct use of the instrument. Specialized personnel should only install the instrument, after having read and understood this manual. By specialized personnel, we mean personnel who, due to specific training and professional experience, have been expressly authorized by the system safety manager to carry out the installation. Do not power the instrument with voltage outside the limits specified in the characteristics. The user is responsible for ensuring that the installation conforms to relative current regulations. In the case of anomalies, contact the nearest Service Centre. Any unauthorized attempt at dismantling or modifying the instrument will void the warranty and relieve the Manufacturer of all responsibility. The appliance has been designed and manufactured for use in weighing and dosage processes. Any improper use will relieve the Manufacturer of all responsibility. IDENTIFICATION DATA PLATE It is important to provide these data when requesting information or instructions regarding the instrument, along with the program number and the software version which are shown on the manual cover and are displayed when the instrument is switched on. PAVONE SISTEMI mod. LC200 s.n. 2008/0382 Page 3
INSTRUMENT POWER SUPPLY The power supply must be wired to terminals 14 and 15. The power supply cable must be channelled separately from other power supply cables with different voltages, from the load cells cables and I/O cables. Power supply : 12 to 24 Vdc/Vac 15 % 4VA CONNECTION ON THE 15 PINS PULL-OUT TERMINAL BLOCK 14. + 15. - LOAD CELLS WIRING The load cell cable must not be channelled with other cables (i.e. outputs connected to remote switches or power supply cables), but must follow its own route. Any cable extension must be carefully shielded and the color code must be respected The extensions on the load cells cable must be soldered, unless a summing junction box is used. The load cell cable shouldn t have more conductors than those effectively used (4 or 6). In case of a 6 wires cable, in which only 4 are used (excitation + and -, signal + and -), connect the sense + and - wires to the respective polarities of the excitation wires. A maximum of 4 x 350-ohm load cells can be connected to the instrument in parallel. The load cell excitation voltage is 5 Vdc and is protected against a temporary short circuit. The instrument s input signal range requires the use of load cells with sensitivity from 1 mv/v to 3 mv/v. The load cell wires must be connected to terminals 1 to 6 of the 6 pins pull-out terminal block. Connect the shield of the load cell cable to the excitation (pin #1). 4 WIRES CONNECTION Signal - 1. EXCITATION - 2. EXCITATION + 3. Connect to terminal #2 4. Connect to terminal #1 5. SIGNAL - 6. SIGNAL + Excitation + Signal + Excitation - 6 WIRES CONNECTION Signal - 1. EXCITATION - 2. EXCITATION + 3. SENSE + 4. SENSE - 5. SIGNAL - 6. SIGNAL + Excitation + Sense + Signal + Sense - Excitation - Page 4
LOGIC INPUT WIRING The digital input is electrically isolated from the instrument through an opto-isolator. The digital input connection cable must not be channeled with power supply cables Use the shortest possible connection cable The digital input activates by connecting pin 12 to pin 13. Instrument 12 Autotare (pulse) 13 RELAY OUTPUTS WIRING The 3 relays have separated commons. The contacts rate is 24 Vdc/Vac 0.5 A. LC 200 internal relay contacts R1 R2 R3 18 19 20 21 22 23 24 Common relay output 1 N.O. contact relay output 1 Common relay output 2 N.O. contact relay output 2 Common relay output 3 N.O. contact relay output 3 N.C. contact relay output 3 RS485 SERIAL WIRING The cable must not be channeled with other cables (i.e. power supply cables), but must follow its own route. Instrument 10 11 TX/RX + TX/RX - Page 5
RS232 SERIAL WIRING For the serial connection use a shielded cable, making sure that only one of the two shield ends is grounded. If the cable has more conductors than those used, connect the free conductors to the shield. The length of the RS232 cable cannot exceed 15 meters (50 feet) (EIA RS-232-C standards); for longer distances the RS485 output must be used. The cable must not be channeled with other cables (i.e. power supply cables), but must follow its own route The PC must comply with the EN 60950 standards. The diagram below shows the connection of the instrument to a PC COM port with a 9 pin connector: Instrument PC 7 8 9 TX RX GND RX TX GND 2 3 5 9 pin Sub-D connector (OPTIONAL) ANALOG OUTPUT WIRING When having this hardware configuration, the instrument gives an opto-isolated analog output. The analog output can be selected as Voltage or Current. Features: Voltage analog output: 0 to 5 V or 0 to 10 V Minimum load: 10 kώ Current analog output: 0 to 20 ma or 4 to 20 ma Maximum load: 300 Ώ! Use a shielded cable for the analog output connection, making sure that only one of the two shield ends is grounded. The analog transmission is particularly sensitive to electromagnetic disturbances. We therefore recommend to use the shortest possible cable length and channel the cable separately from power cables. Instrument 16 17 + - Analog output The analog output is normally set in voltage or current in the factory as requested by the client. It is however possible to change this setting by moving a soldered jumper present on the instrument main board (S117). S117: VOLT or ma versions VOLT selection ma selection Page 6
SUMMARY OF WIRINGS PIN 6 Pin pull-out terminal block 1 Load cell Excitation - 2 Load cell Excitation + 3 Load cell Sense + 4 Load cell Sense - 5 Load cell Signal - 6 Load cell Signal + NUM. 18 Pin pull-out terminal block 7 TX (RS232) 8 RX (RS232) 9 GND (RS232) 10 TX/RX + (RS485) 11 TX/RX - (RS485) 12 Logic input 13 Logic input 14 + ~ 15 - ~ Dry contact Power supply 12 to 24 Vdc/Vac +/- 15% 16 Analog output + (V or ma) 17 Analog output - 18 Common Relay Output 1 19 N.O. contact Relay Output 1 20 Common Relay Output 2 21 N.O. contact Relay Output 2 22 Common Relay Output 3 23 N.O. contact Relay Output 3 24 N.C. contact Relay Output 3 Connect the shield of the load cell cable to the excitation (pin #1). The serial and analog output cables shield must be grounded at one end only. Page 7
PAVONE SISTEMI S.R.L. Via Tiberio Bianchi 11/13/15, 20863 Concorezzo (MB), ITALY T 0039 039 9162656 F 0039 039 9162675 W en.pavonesistemi.it Industrial Electronic Weighing Systems since 1963