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AQUALEAK 10K, Инструкция по установке и эксплуатации

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10K manual 

 

 

 

 

Issue 1.0, 31st July 2019 

 

Page 31 

•

 

Each SD-Z simulates 50 feet (15.24 m) of cable. 

•

 

Each X-Connector (XCON) simulates 150 feet (45.72 m) of cable. 

8.

 

Divide the Leg 2 resistance by the total length of cable. This value is the resistance of 
the cable installed on your system in Ohms per foot. This Ohms per foot value is for 
your reference only (the Ohms per foot value will have a decimal point in it, and you 
cannot write a number with a decimal point to register 40008). Record this value. 

9.

 

Multiply the value in Ohms per foot by 1000. This will give you the value in milliOhms 
per foot. This milliOhms per foot value is your end result, and the number you will 
write to Modbus register 40008. Record this value. 

10.

 

Access your Modbus-enabled system. Write the milliOhms per foot resistance value to 
the Aqualeak 

10K’s Modbus register

 40008. 

Example 

 

•

 

The Leg 2 resistance reading on the system is 2091 Ohms. 

•

 

The system has: 

•

 

400 feet of sensor cable. 

•

 

1 X-Connector, which simulates 150 feet (45.72 m) of sensor cable. 

•

 

4 SD-Zs which simulate 50 feet (15.24 m) of cable each, for a total simulation of 
200 feet (61 m) of sensor cable.  

•

 

Therefore, system-wide, there are 750 feet of actual and simulated cable. 

•

 

Divide 2091 Ohms by 750 feet of cable. You get a resistance of 2.788 Ohms per 
foot. 

•

 

Multiply 2.789 Ohms per foot by 1000 to get 2788 milliOhms per foot. 

•

 

Access Modbus register 40008 and record the new milliOhms per foot value, 2788. 

 

 

 

Содержание 10K

Страница 1: ...TION LTD 11 Forest Gate Pewsham Chippenham Wilts SN15 3RS Tel 44 0 1249 715698 www aqualeak com Email sales aqualeak com AQUALEAK 10K Water Leak Detection system Installation and Operation Manual Issue 1 0 July 2019 ...

Страница 2: ... incidental or consequential damages in connection with the furnishing performance or use of this manual Copyright Aqualeak 2019 All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the express prior written permission of the copyright holder Contac...

Страница 3: ...mences make sure that the mains power is isolated by a competent person and a Lock Out and Tag Out procedure has been followed Prove the mains supply is de energised with a suitable multi meter which has been checked with a proving unit Death personal injury and or damage to persons and or property may result if this is not observed LIST OF ABBREVIATIONS Below is a list of standard abbreviations u...

Страница 4: ...ing Diode Lsb Least significant bit M Metre min minutes mm millimetre Msb Most significant bit msec milli second Nm Newton metre No Number PSU Power Supply Unit RTU Remote Terminal Unit sec seconds VAC Volts Alternating Current VDC Volts Direct Current W Watts ...

Страница 5: ...cations ports 15 JMP Termination Jumper 17 Select Alarm Options 17 Enable and Disable the Audible Alarm 17 Set the Re Alarm interval 17 Connect the Leak Detection Cable 18 Connect lengths of sensor cable 18 Secure sensor cable to the floor 19 Applying power to the Aqualeak 10K 20 Test the System 21 OPERATION 22 Front Panel Controls and Display 22 Manage Alarms 24 General Guidance 24 Contamination ...

Страница 6: ...Communications connections 16 Figure 12 DIP Switch settings for Communications Baud Rate 16 Figure 13 DIP Switch settings for Communications Address 17 Figure 14 DIP Switch 8 SW 1 Audible Alarm Settings 17 Figure 15 DIP Switch 4 SW1 Re Alarm Interval 18 Figure 16 Sensor cable 18 Figure 17 Example of sensor cable routing in large data centre 19 Figure 18 Securing the sensor cable 20 Figure 19 Aqual...

Страница 7: ... presence of water and other liquids If a leak is detected an alarm is activated the distance to the leak is displayed and the Aqualeak 10K can report the presence of the leak to a Building Management System BMS Aqualeak 10K is a single zone system designed for continuous operation with minimal human intervention In operation the Aqualeak 10K continuously monitors the sensor cables connected to it...

Страница 8: ...0 m 8200 ft Only use the recommended type of sensor cable supplied by Aqualeak in conjunction with the 10K Although not normally installed spot detectors may be used with the 10K Contact Aqualeak for more details Distance Read Leak Detection When the Aqualeak 10K s circuitry measures a current in excess of the user defined leak threshold the unit s microprocessor computes the distance to the leak ...

Страница 9: ...oller and the associated Power Supply Unit PSU They are mounted on a standard DIN rail inside the back box of the 10K casing To the left of the PSU are DIN rail mounted terminal blocks for the mains supply live neutral and Earth connections The 10K Controller contains two circuit boards The top circuit board houses the operational controls and displays The lower circuit board houses connectors for...

Страница 10: ...g additional items which are sold separately 1 A sensor cable Aqualeak recommends that only the orange coloured sensor cable Part No SCTDM designed to be used with the Aqualeak 10K is used If the recommended sensor cable is used any length of sensor cable up to a maximum length of 2500 m 8200 ft may be linked to the 10K 2 J clips used to secure the sensor cable to floors etc The number of J clips ...

Страница 11: ...ve Max Relay output AC 250 VAC 8 A resistive Relay minimum load 10 mA 5 VDC Sensor cable Only use the recommended orange coloured sensor cable Leader cable 4 57 m EOL terminator required for sensor cable Maximum length 2500 m Minimum length 10 97 m Detection accuracy 0 6 m 0 5 of sensor cable length Detection repeatability 0 6 m 0 25 of sensor cable length Detection response time 5 to 990 sec Sele...

Страница 12: ...age that is dangerous to life Before work commences make sure that the mains power is isolated by a competent person and a Lock Out and Tag Out procedure has been followed Prove the mains supply is de energised with a suitable multi meter which has been checked with a proving unit Death personal injury and or damage to persons and or property may result if this is not observed 1 If not already don...

Страница 13: ...ly Unit 10 Leader cable 3 Earth bus bar 11 Sensor cable 4 EIA 485 Comms Port 12 End Of Line EOL terminator 5 Neutral bus bar 13 Earth terminal block 6 EIA 485 Comms Port 14 Neutral terminal block 7 10K Controller 15 Live terminal block 8 Relay Output TB1 Figure 4 Electrical connections to Aqualeak 10K ...

Страница 14: ...6 General DIP Switch settings 3 Use DIP switch 5 on the SW1 DIP switch block to configure this relay as latched or unlatched An unlatched alarm resets itself once a detected leak or cable problem has been resolved A latched alarm must be manually reset even if the detected leak or cable problem is no longer present Figure 7 SW1 DIP Switch 5 Latched or Unlatched Alarms TB2 Leader Cable A 4 57 m sec...

Страница 15: ... in feet or meters 2 Aqualeak s orange sensing cable Part No SCTDM has a resistance of 2 8 Ohms per foot Set DIP switch 7 in block SW1 to the appropriate resistance per foot value Figure 10 SW1 DIP Switch 7 Ohms per foot resistance TB3 and TB4 Input Power and EIA 485 communications ports NOTE When delivered the Aqualeak 10K already has in place the internal power connections between the terminal b...

Страница 16: ...rk 5 If you are installing more than one Aqualeak 10K use the appropriate pinouts of TB3 and TB4 to create a daisy chained Modbus connection 6 A grounded shield contact is provided for connection to a shielded cable If the shield contact is used verify the power connector is properly grounded and that there is no voltage potential between units on the Modbus network Figure 11 TB3 and TB4 Power Sup...

Страница 17: ...or if it s not the last unit in the daisy chain leave the jumper where it is If your unit is the last device in a daisy chain move the jumper so it is over the two pins nearest the end of the board SELECT ALARM OPTIONS Enable and Disable the Audible Alarm The audible alarm is disabled by default To modify this setting adjust switch 8 on DIP SW1 as shown in the following illustration Figure 14 SW1 ...

Страница 18: ...leak 10K Connect lengths of sensor cable Connect the sensor cable s as follows 1 Unscrew the end of line EOL terminator from the end of the leader cable 2 Attach the first length of sensor cable to the leader cable Insert the male pins into the female connector and twist the collar on the female side of the connector to secure Figure 16 Sensor cable 3 Route the sensor cable according to your cable...

Страница 19: ...nsor cable to the floor Aqualeak recommend that sensing equipment is installed with maintenance in mind Sensing equipment SHOULD NOT be installed in inaccessible areas and should always be retrievable for maintenance Secure the sensor cable to the floor with either J clips Aqualeak Part No JC or one of the other approved methods shown in Figure 18 Available from Aqualeak and designed specifically ...

Страница 20: ...other nonconductive adhesive to help secure the J clip to the floor CAUTION INCORRECT OPERATION Do not install the sensor cable directly in front of an air conditioner Allow a minimum of 1 3 to 1 8 m between the air conditioner and the cable If the cable is too close to the air conditioning unit s air stream the moisture from the humidifier may cause false leak readings If the cable must be instal...

Страница 21: ...est Reset button twice to verify the length of installed sensor cable If the length displayed is different from the actual length installed consult Page 33 for troubleshooting information TEST THE SYSTEM NOTE If the Aqualeak 10K is already connected to a BMS or NMS notify monitoring personnel before you begin testing the system 1 To verify the Aqualeak 10K s accuracy test three points within the l...

Страница 22: ...ed together to convey device status and information regarding detected leaks and cable faults A blue button is used to cycle the 4 character LED silence the audible alarm and reset the alarm 1 Four character LED display 4 DIP switch SW2 Modbus Configuration 2 LED s 5 Test Reset Alarm Silence push button 3 DIP Switch SW1 Configuration Settings Figure 19 Aqualeak 10K controls and indicators ...

Страница 23: ...isplays cbr Yellow LED Cable contamination 4 character LED displays the distance to the contamination Green LED Power On Ft Green LED Measurements are made in feet m Green LED Measurements are made in meters µA Green LED Microamps of current on cable amperage is displayed on 4 character LED Test Reset Alarm Silence push button Blue Push Button In normal operating conditions the button functions in...

Страница 24: ...p cross reference the distance with the plan map 4 Fix the problem fix the leak then dry the area and the section of cable involved in the leak replace broken cable clean contaminated cable Contamination Alarm Guidelines If the sensor cable is in a contamination alarm state check the following 1 Verify that the cable is at least 1 3 m away from any air conditioning unit 2 If there is dirt grit or ...

Страница 25: ... 13 W2 DIP Switch Settings for Communications Address on page 17 for more specific information Function Field The function field is one byte in length and tells the Aqualeak 10K which function to perform Functions 03 Read 4xxxx output registers and 04 Read 3xxxx input registers are supported by the Aqualeak 10K Data Field The length of the data field varies depending on the function The data field...

Страница 26: ...put Registers Packet Structure Read Registers Request Packet Read Registers Response Packet Slave Address 1 byte Slave Address 1 byte 03 Function code 1 byte 03 Function code 1 byte Start Register 2 bytes Byte count 1 byte of registers to read 2 bytes First register 2 bytes CRC Checksum 2 bytes Second register 2 bytes Cry Checksum 2 bytes The Aqualeak 10K Output Registers are defined in Table 5 Ta...

Страница 27: ...lue 4 Minimum 25 Maximum Default 12 0 65535 40008 Resistance per Foot Milliohms of resistance of installed leak detection cable This value is set here and can also be read through register 30008 2000 3500 milliOhms foot or 3500 4240 milliOhms foot to convert this value to Ohms foot divide the number by 1000 0 65535 40009 AC Rejection Frequency Used by ADC to reject AC powerline frequencies Needed ...

Страница 28: ...0K Input Registers are defined in Table 7 Table 7 Input Registers Register Name Description Units Range 30001 Status Bit level status None 0 65535 30002 Leak Distance Location of leak Ft Decimeters 0 65535 30003 Units Unit of measure 0 Meters 1 Feet 0 65535 30004 Leak Current Leakage current on cable A 0 65535 30005 Cable Length Installed cable length Feet Decimeters 0 65535 30006 Leg1 Res Resista...

Страница 29: ...eters 0 0 9999 9 Table 8 Status Flags Register 30001 Bit Description 00 1 Leak detected 01 1 Cable break detected 02 1 Contamination detected 03 1 Summary alarm 04 15 Spare RTU FRAMING The example below shows a typical Query Response from an Aqualeak 10K Table 9 Response sample Slave Address Function Code Count Bytes of Data Register Data Register Data Register Data CRC 16 CRC 126 Msb Lsb Msb Lsb ...

Страница 30: ...o the cable during installation 4 If the cable is older and the amperage reading is above 15 A clean the cable A mild dish detergent solution removes most dirt Isopropyl alcohol is also an effective cable cleaner 5 Sensor cable has a resistance For example Aqualeak s orange cable has a resistance of 2 8 Ohms per foot A system s actual resistance will rarely be exactly 2 8 Ohms per foot but it will...

Страница 31: ...oot value is your end result and the number you will write to Modbus register 40008 Record this value 10 Access your Modbus enabled system Write the milliOhms per foot resistance value to the Aqualeak 10K s Modbus register 40008 Example The Leg 2 resistance reading on the system is 2091 Ohms The system has 400 feet of sensor cable 1 X Connector which simulates 150 feet 45 72 m of sensor cable 4 SD...

Страница 32: ...ce reading on the Aqualeak 10K to a reference plan or map if available to ensure the Aqualeak 10K displays the correct leak location See page 30 for more information about calibrating the sensor cable 4 Dry the sensor cable and verify that the Aqualeak 10K returns to normal 5 Remove the End of Line terminator EOL 6 Confirm the cable break cbr alarm on the Aqualeak 10K 7 Re install the EOL 8 Verify...

Страница 33: ...rminator and the Aqualeak 10K If you do not find a faulty section of cable and the cable break alarm does not clear go to step 4 4 If the sensor cable is all functional the leader cable may be damaged or faulty To test the leader cable power down switch off the Aqualeak 10K Remove the four position terminal block marked Cable from the unit Remove the four leader cable wires going into the terminal...

Страница 34: ...ion alarm 1 Unless an obvious contaminate can be found to clear a contamination alarm the sensor cable must be removed from its installation and cleaned Usually thecable can be cleaned by pulling it through a clean damp rag You can also wipe the cable with isopropyl alcohol 2 If the sensor cable is contaminated by oil glycol or chemicals the cable can be washed Remove the cable from its installati...

Страница 35: ...rmed using the DIP switches on the front panel If the Aqualeak 10K is to be connected to a Modbus equipped monitoring system some of the configuration can be performed using the registers Pages 12to 21 describe how to install and configure the Aqualeak 10K and refers to specific DIP switch settings where appropriate Information about Modbus communications can be found in pages 25 to 31 A1 DIP SWIT...

Страница 36: ...y 2019 Page 36 A2 SW1 DIP SWITCH SETTINGS DIP switch 1 manipulates basic configuration settings on the Aqualeak 10K Dip switch 3 in SW1 is unused and should remain in the OFF position Figure A2 SW1 DIP Switch configuration settings ...

Страница 37: ...lows for the communications you plan to employ A3 1 Configure the Aqualeak 10K for Modbus Communications The Modbus address should be a number between 1 and 254 Adjust the individual switches until their sum equals the Modbus address Figure A3 shows the values of the DIP switches on the SW2 block as well as two examples of how the DIP switches would be set for specific unit addresses Figure A3 SW2...

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