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Summary of Contents for RLE Technologies SeaHawk LDRA6
- Page 1 LDRA6 USER GUIDE RLE TECHNOLOGIES...
- Page 2 ©2008 RLE Technologies 110046 Rev 1.6 (08/2008)
- Page 3 SEAHAWK LDRA6...
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Page 4: Technical Support
A request for assistance may be sent to support@rletech.com. Otherwise, please call us directly at: (970) 484-6510 - press “2” for technical support The following information is located on the bottom of each LDRA6 unit. Please have this information available whenever a technical support call is placed:... -
Page 5: Table Of Contents
Chapter 1: Product Overview ...2 1-1 Description ...2 1-2 LDRA6 Front Panel Indicators ...2 1-2.1 Zone LEDs ...2 1-2.2 Power LED...2 1-2.3 Audible Alarm...2 1-2.4 Quiet/Test/Reset Switch ...2 Chapter 2: Connections & Settings ...4 2-1 LDRA6 Board ...4 2-1.1 TB1 – Power ...5 2-1.2 POW1 –... - Page 6 Appendix A: Modbus Communications ... 16 A-1 Modbus Implementation of the LDRA6... 16 A-1.1 Modes of Transmission ... 16 A-1.1.1 Slave Address Field ... 16 A-1.1.2 Function Field ... 16 A-1.1.3 Data Field... 16 A-1.1.4 Error Check Field... 16 A-2 Packet Communications for the LDRA6... 17 A-2.1 Read Output Registers ...
- Page 7 User Guide: LDRA6 List of Figures and Tables LIST OF FIGURES AND TABLES Figure 1-1: LDRA6 Front Panel Indicators ...3 Figure 2-1: LDRA6 Board...4 Figure 3-1: Water Leak Detection Cable...9 Figure 3-2: Cable Installation Methods ...10 Table 1: Read Output Registers Packet Structure...17 Table 2: Output Registers...17...
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Page 8: Chapter 1: Product Overview
The LED that corresponds with the appropriate zone also illuminates and an audible alarm is activated. Each LDRA6 input can also be configured to detect a dry contact’s change of state (NO or NC) and annunciate the alarm on the front panel. -
Page 9: Figure 1-1: Ldra6 Front Panel Indicators
User Guide: LDRA6 Chapter 1: Product Overview Power LED Test / Reset/ Silence Switch Leak /Cable Detected LEDs Figure 1-1: LDRA6 Front Panel Indicators 970 484-6510 www.rletech.com... -
Page 10: Chapter 2: Connections & Settings
CHAPTER 2: CONNECTIONS & SETTINGS LDRA6 BOARD The LDRA6’s zone connectors, labeled TB2, are found at the bottom of the board on the double-stacked terminal block. The switches on the board are labeled SW1 and SW2. The unit has one dial, labeled R1, which is used to manually adjust the sensitivity for all zones. -
Page 11: 2-1.1 Tb1 - Power
2-1.1 TB1 – Power The LDRA6 connects to a 24VDC power supply using TB1, a two position connector labeled 24VDC. 2-1.2 POW1 – Power Power can also be supplied to the unit through POW1. This is a wall adapter plug connection. This also requires 24VDC. -
Page 12: 2-1.5 Tb6 - Summary Relay
TB6-3 Summary alarm normally closed (NC) 2-1.6 TB7 – RS485 Connection The LDRA6 can communicate with other devices through the RS485 terminal block. Wire as follows: TB7-1 + or A wire TB7-2 – or B wire TB7-3 Shield or GND wire www.rletech.com... -
Page 13: Sw1 - Relays And Alarm
SW1 - RELAYS AND ALARM 2-2.1 SW1, Position 1: Summary Relay Supervised / Unsupervised Configures the Summary Alarm relay as supervised or unsupervised. If a relay is supervised, the relay picks until power goes off or until an alarm is detected. The alarm then releases to announce a change in state. -
Page 14: 2-2.7 Sw1, Positions 7 And 8: Re-Alarm Time
Turn the dial counterclockwise to make the zone more sensitive. This means a leak will be reported for the zone when a small amount of water is present. This potentiometer can be overridden through the LDRA6’s craft port configuration for individual zones (see section 4-3.3 for details). -
Page 15: Figure 3-1: Water Leak Detection Cable
BEFORE YOU BEGIN The LDRA6 is a wall mounted device. To secure the device to the wall, first open the door of the enclosure. There are knockouts on the top and bottom of the enclosure. Remove as many as necessary. -
Page 16: 3-2.2 Recommended Cable Installation
If the cable is installed over an obstruction, clip the cable on both sides, as close to the obstruction as possible. Do not install the cable directly in front of an air conditioner. Allow a minimum of 6 feet (1.83m) between the unit and the cable. -
Page 17: Apply Power To The Unit
Once cable for all the desired leak detection zones has been connected to the unit, power may be applied. The LDRA6 operates on 24VDC power supplied by a wall adapter or a direct line. A power supply should be run to the location of the unit. -
Page 18: Chapter 4: Start-Up
Make sure the RS-232 port is connected to a PC or terminal with a straight through cable. When the LDRA6 is powered up, the boot ROM and flash program code are verified. Output similar to the screen displayed below should appear on the terminal or terminal emulation software. -
Page 19: Function Commands
The first value displayed is the value read from R1, the sensitivity dial on the LDRA6 board. Each zone is displayed in the format x: yyy/zzz, where x is the zone, yyy is the value currently being used for sensitivity (in micro amps read by the sensing cable, yyy can range from 25 to 300), and zzz is the manually entered value through the craft port (factory default is 0). -
Page 20: 4-3.4 E - View Eeprom Data
To override the manual sensitivity dial setting, enter a new value for each desired zone. Using a value of 0 will enable desired zone to use manual sensitivity dial setting. Use the format sensX/yyy to override a zone’s setting. Example: sens1:300 sets Zone 1 to a sensitivity of 300 micro amps. Type sens and press Enter again to viewing the Leak Zone Sensitivity settings after entering new value displays the following: Pot:25 1:300/300 2:25/0 3:25/0 4:25/0 5:25/0 6:25/0 4-3.4... -
Page 21: 4-3.10 T - Toggle Modbus Trace On/Off
4-3.10 t – Toggle Modbus Trace On/Off t will toggle Modbus tracing with packet viewing from the RS485 port over the RS232 port. This is a command for advanced diagnostic purposes only. 4-3.11 z – Display Leak Zone Readings z will display the present Leak Detection Cable readings. The Leak Zone table will display the reading for each leg of cable and the present leakage current reading for each zone. -
Page 22: Appendix A: Modbus Communications
The LDRA6 is capable of communicating via the half-duplex RS485 serial communication standard. The LDRA6 is configured to act as a slave device on a common network. The RS485 medium allows for multiple devices on a multi-drop network. The LDRA6 is a slave only device and will never initiate a communications sequence. -
Page 23: Packet Communications For The Ldra6
PACKET COMMUNICATIONS FOR THE LDRA6 A-2.1 Read Output Registers To read the LDRA6 parameter values, the master must send a Read Output Registers request packet. The Read Output Registers request packet specifies a start register and the number of registers to read. The start register is numbered from zero (40001 = zero, 40002 = one, etc). -
Page 24: A-2.2 Read Input Registers
A-2.2 Read Input Registers To read the LDRA6 input values, the master must send a Read Input Registers request packet. The Read Input Registers request packet specifies a start register and the number of registers to read. The start register is numbered from zero (30001 = zero, 30002 = one, etc). -
Page 25: A-2.3 Present Single Register
A-2.3 Present Single Register To set a LDRA6 parameter value, the master must send a Preset Single Register request packet. The Preset Single Register request packet specifies a register and the data to write to that register. The register is numbered from zero (40001 = zero, 40002 = one, etc). -
Page 26: Rtu Framing
For address’s 128-191, set SW1-7 to off, #8 to on, then subtract 128 from the address and use the table. For address’s 192-254, set SW1-7 & 8 to on, then subtract 192 from the address and use the table. RTU FRAMING The example below shows a typical Query/Response from a LDRA6 module. Slave Functions... -
Page 27: Modbus Mirroring
A-4.1 To use the EIA-485 Modbus mirroring feature set the address on the master LDRA6 to address 255 and then set the address on the slave LDRA6 to 1. The Master unit will then repeat (mirror) any zone alarms that come into the Slave Unit. When using this feature none of the local Alarm/Zone inputs will work on the Master unit, The Master unit is only a repeater for the single slave unit being used. -
Page 28: Appendix B: Troubleshooting
APPENDIX B: TROUBLESHOOTING Trouble No Power Power On LED is Not On Cable Fault on Zone(s) Leak Detected on Zone(s) www.rletech.com Check Power Supply Check for supply power at TB1 pins 1 and 2 on the bottom right hand corner of PCB. -
Page 29: Appendix C: Technical Specifications
APPENDIX C: TECHNICAL SPECIFICATIONS Power Inputs Water Leak Detection Cable Cable Input Maximum Length Detection Response Time Outputs Relays Communications Ports RS232 RS485 Protocols Terminal Emulation (RS232) Modbus (RS485) - Optional Alarm Notification Audible Alarm Front Panel Interface LED Indicators Push Buttons Operating Environment Temperature... - Page 30 FO R T C O L L IN S C O 9 70 4 84- 6 51 0 9 70 4 84- 6 65 0 F A X WWW .R LET EC H .COM...
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