Related Manuals for PCE Health and Fitness LD120
Summary of Contents for PCE Health and Fitness LD120
- Page 1 LD120 LOOP DETECTOR WITH MODBUS COMMUNICATIONS USER MANUAL Tel: +27 (031) 7028033 P.O.Box 24 Fax: +27 (031) 7028041 STANFIELD 3613 Email: proconel@proconel.com SOUTH AFRICA Web: www.proconel.com 18/08/2005 V3.0...
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Page 2: Table Of Contents
TABLE OF CONTENTS AN OVERVIEW OF THE LD120 MODBUS SYSTEM ......3 LD120 HARDWARE ................5 SPECIFICATIONS ................5 WIRING....................6 DIAGNOSTICS ..................7 RELAY FUNCTIONALITY ..............8 LOOP INSTALLATION GUIDE .............. 8 DATA ADDRESSES................9 LD120 - S ( MODULE TYPE = 34) ..... 10... -
Page 3: An Overview Of The Ld120 Modbus System
1. AN OVERVIEW OF THE LD120 MODBUS SYSTEM The LD120 is a series of single channel inductive loop detectors. The use of microprocessor and surface mount technology enables a large number of functions to be incorporated into a small package. The LD120 is compatible with most single channel detectors on the market and is easy to set-up and install. - Page 4 Network Layout. The diagram below shows how the LD120 may be connected to a Modbus network. The LD120 can be placed on the network with other I/O products such as the popular MOD- MUX from Procon Electronics. A typical application is where a PC (Personal Computer) is connected to the Network.
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Page 5: Ld120 Hardware
2. LD120 HARDWARE 2.1 SPECIFICATIONS POWER REQUIREMENT: LD120 - 220VAC (+/- 15% ) 50Hz. LD121 - 110VAC (+/- 15%) 60Hz. LD122 - 12/24VAC/DC (+/- 15%). PRESENCE RELAY OUTPUT: This output has both a normally open and normally closed relay contact rated at 0.5A/220VAC. -
Page 6: Wiring
2.2 WIRING PRESENCE RELAY PULSE RELAY OUTPUT OUTPUT TWISTED LOOP LOOP INPUT CABLE LD120 220VAC / LD121 110VAC LD122 12-24VAC/DC POWER INPUT EARTH Comms (RJ45) – RS485 (LD120) Name Function Not used (no connect) + Line of 485 Comms - Line of 485 Comms Not used (no connect) View From Cable side of connector (Looking ‘into’... -
Page 7: Diagnostics
3. DIAGNOSTICS SYMPTOM POSSIBLE CAUSE SOLUTION The POWER LED is No power supply voltage on the Check that the power supply is correctly wired to not on. input. the detector. (PINS 1 and 2) The DETECT LED There may be a poor Check all wiring. -
Page 8: Relay Functionality
4. RELAY FUNCTIONALITY RELAYS VEHICLE NO VEHICLE LOOP FAULTY NO POWER PRESENT CLOSED OPEN CLOSED CLOSED PRESENCE OPEN CLOSED OPEN OPEN RELAY PULSE CLOSED OPEN OPEN OPEN PULSE RELAY PULSE OPEN CLOSED CLOSED CLOSED 5. LOOP INSTALLATION GUIDE 1. The detector should be installed in a waterproof housing as close to the loop as possible. 2. -
Page 9: Data Addresses
6. DATA ADDRESSES The data in the modules is stored in registers. These registers are accessed over the network using the MODBUS communication protocol. The MODBUS mode used is the RTU mode with the following set-up: BAUD RATE 9600 DATA BITS PARITY NONE STOP BITS... -
Page 10: Ld120 - Single Channel Detector ( Module Type = 34)
6.1 LD120 - Single Channel Detector ( MODULE TYPE = 34) Modbus Register Name High Access Comments Address Limit Limit 10001 Digital Input 1 Loop Fault Status. 10002 Digital Input 2 Loop Detect Status. 10003 Digital Input 3 Not used. - Page 11 40015 Mode 65535 bit 7 bit 6 bit 5 pulse relay (1=undetect,0=detect) bit 4 bit 3 pulse relay (1=modbus,0=detector) bit 2 pres relay (1=modbus,0=detector) bit 1 perm_pres (1=on,0=off) bit 0 40016 Detect 65535 ( X0.01%) Sensitivity 40017 Not Used 65535 40018 UnDetect 65535...