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Ampcontrol CSM Pty Ltd - 

ABN 35 000 770 141

 

ECD User Manual 

Rev 3 – March 2020  

 

ECDB005R0

 

13/03/2020 13:12

 

 

Page 

17

 of 21

 

7

 

OPERATION SUMMARY  

7.1

 

DIP Switches Configuration 

7.1.1

 

Remote Start

 

Switch Position 

Function

 

Off (left) 

Remote Start disabled. 

A remote start button (with a 100Ω

 resistor) must not be installed 

On (right) 

Remote Start Enabled. 

A remote start button (with a 100Ω

 resistor) must be installed 

 

7.1.2

 

Latching

 

Switch Position

 

Function

 

Off (left) 

Latching mode disabled. Trips will be automatically reset after the fault has been cleared. 

On (right) 

Latching mode enabled. Trips must be manually reset after the fault has been cleared. 

 

7.2

 

Rotary Switches Configuration 

7.2.1

 

Trip Level selection

 

 

The user can select the trip level via one of the rotary switches at the front of the unit. The trip level represents the threshold 

for the series resistance. If the resistance is measured to be greater than this threshold 

±3Ω

, a trip will occur. The allowed 

values for the trip level setting are 1

0Ω, 15Ω

, 

20Ω, 25Ω

, 3

5Ω, and

 

45Ω.

 

 

The shunt resistance trip level is fixed at 1.2

5kΩ

. A trip will occur if the pilot to earth resistance is detected to be below 

this level. 

 

7.2.2

 

Trip Time Selection 

 

The user can select the trip time via one of the rotary switches at the front of the unit. The trip time represents the delay 

after which a trip condition has occurred when the ECD relay will de-energise. The allowed settings for the trip time are 

5

0ms, 100ms, 200ms, 300ms, 400ms, and 

5

00ms. 

 

7.3

 

Indication LEDs 

7.3.1

 

Status (Green) 

LED state 

Indication 

Off 

Power Off 

Flashing

 

Power is ON and ECD is running (relay contacts switched to the non-default state) 

On 

Power is ON but ECD is not running (relay contacts in the default state) 

 

7.3.2

 

Healthy (Green)

 

LED state

 

Indication

 

Off 

Pilot is not healthy (series resistance above the selected setting or shunt resistance below 

1.25kΩ)

 

Flashing

 

N/A 

On 

Pilot is healthy (series resistance below the selected setting and shunt resistance above 

1.25kΩ)

 

 

 

 

Summary of Contents for ECD

Page 1: ...ECD Earth Continuity Protection Relay User Manual Ex ia I 20 C Ta 65 C IECEx TSA13 0004X Part Number 166351 Revision 3 March 2020 Designed and manufactured in Australia by Ampcontrol CSM Pty Ltd ...

Page 2: ... that follows and inform other operators CAUTION This safety alert symbol identifies important information to be read in order to ensure the correct sequence of work and to avoid damage or even destruction of the equipment and reduce any potential risk of injury or death to the personnel Supplementary information not directly affecting safety or damage to equipment Carefully read the message that ...

Page 3: ...d and is believed to be entirely reliable with all of the necessary information included AMPCONTROL PTY LTD reserves the right to make changes to any products described herein to improve reliability function or design and reserves the right to revise this document and make changes from time to time in content hereof with no obligation to notify any persons of revisions or changes AMPCONTROL PTY LT...

Page 4: ...2 Electrical Connections 12 5 COMMISSIONING AND CALIBRATION 14 5 1 Earth Continuity Test Series Resistance 14 5 2 Earth Continuity Test Shunt Resistance 14 5 3 Remote Start Function 14 6 AS NZS 2081 PROTECTION FUNCTION EARTH CONTINUITY 15 6 1 Series Resistance 15 6 2 Shunt Resistance 15 6 3 Remote Start 16 6 4 Latching mode 16 6 5 Manual reset procedure 16 7 OPERATION SUMMARY 17 7 1 DIP Switches C...

Page 5: ...used within the design parameters The instructions within this manual must be observed as an aid towards achieving maximum safety during operation The owner user is responsible for observing the following instructions 1 1 1 Changes to Equipment Changes in the design and modifications to the equipment are not permitted Unauthorised changes made to the hardware or operating firmware will void the ma...

Page 6: ... or less and an earth fault clearance time of less than 1s Alternatively a 3A external fuse rated to system voltage can be installed between the relay s pilot terminal and the pilot conductor The ECD relay must be located in a non hazardous safe area The ECD IS earth connection is critical to the IS protection and must be infallibly connected to the system earth This must be done with a minimum of...

Page 7: ...hem especially if the wrappings are to be discarded 2 2 Inspection Equipment that is found to be damaged or has been modified away from its published specification must not be used Please contact Ampcontrol if the equipment is suspected to be different than that ordered or if it does not match the published specifications 2 3 Storage after Delivery When the equipment is not to be installed immedia...

Page 8: ...design It is important to understand how the ECD is intended to interact with other equipment within a system For safe and reliable use it is crucial that neither the ECD s logical operation nor its signalling be compromised by incompatibilities with connected equipment 3 1 4 Modifications of any form to the ECD relay are prohibited The ECD as supplied has been designed and manufactured to comply ...

Page 9: ...tions require the Pilot terminal to be positioned at the top while others require the Pilot terminal to be positioned at the bottom For this reason the ECD relay is supplied with a second loose label with inverted text This allows for easier identification and reading of the Relay s status when installed upside down To install apply the new label directly over the existing label Figure 1 Inverted ...

Page 10: ...The relay contains an internal IS barrier Key Features Compact size DIN rail mounted Simple wiring and installation 6 settings for trip time 6 settings for trip level AS NZS 2081 2011 Compliant IEC 60079 Certification SIL2 Capable See appendix B Typically the ECD relay will be connected to the pilot conductor of a trailing or reeling cable With the pilot conductor terminated to earth through a dio...

Page 11: ...m Figure 2 ECD enclosure dimensions 4 1 2 Mounting arrangement The ECD enclosure is designed be mounted on a standard 35mm DIN rail The IS connections are located at the top of the enclosure and the non IS connections power and user inputs and outputs are located at the bottom of the enclosure The fascia of the relay includes two 2 adjustable DIP switches and two 2 rotary switches for configuratio...

Page 12: ...MINATION EARTH BAR Figure 3 ECD Typical Electrical Application The table below lists the terminal connections into the ECD relay Terminal Label Description 1 RST Reset 2 Power Supply Positive 3 Power Supply Negative 4 NC1 Relay Output Normally Closed Contact 1 5 NO1 Relay Output Normally Open Contact 1 6 COM1 Relay Output Common Contact 1 7 NO2 Relay Output Normally Open Contact 2 8 COM2 Relay Out...

Page 13: ...ing mode after the fault has been cleared The reset input has no affect in non latching mode The Reset input should be connected to the ECD s terminal via a normally open switch with a minimum rating of the supply voltage 4 2 5 Relay Contacts The default position of the relay contacts Normally Open or Normally Closed is described on the ECD front label and Figure 3 The relay contacts will change s...

Page 14: ...o ensure the integrity of the pilot earth loop Series resistance measurement and shunt resistance measurement 5 1 Earth Continuity Test Series Resistance The series resistance measurement can be verified by installing a resistor which is a minimum of 3Ω above the selected trip level or creating an open circuit in series with the pilot conductor and verifying that the ECD relay trips within the sel...

Page 15: ...it the length of cable that the relay can drive 6 1 Series Resistance The ECD relay measure the series resistance of the pilot earth loop by applying a positive voltage to the pilot conductor and measuring the pilot current If the series resistance is detected to be above the user selected level the ECD de energises its output relay and the LEDs on the front panel will indicate an open circuit fau...

Page 16: ... must be released within 15s or Start Button timed out trip will occur The start timed out fault is automatically reset once the start resistor is detected A manual reset is not required 6 4 Latching mode Latching mode can be selected via the DIP switches at the front panel When a fault occurs in latching mode the trip will be latched preventing the ECD from starting even if the fault is cleared u...

Page 17: ...ed to be greater than this threshold 3Ω a trip will occur The allowed values for the trip level setting are 10Ω 15Ω 20Ω 25Ω 35Ω and 45Ω The shunt resistance trip level is fixed at 1 25kΩ A trip will occur if the pilot to earth resistance is detected to be below this level 7 2 2 Trip Time Selection The user can select the trip time via one of the rotary switches at the front of the unit The trip ti...

Page 18: ... be flashing together and the measurements can no longer be trusted A power cycle is needed to reset this state If this happens repetitively please contact Ampcontrol as the unit may be damaged The ECD continuously checks the health of its internal circuitry If these checks fail the ECD will show an internal fault by flashing all LEDs and returning the relay contacts to the default position 7 5 St...

Page 19: ...ations have been carried out to installed equipment 8 1 2 Hands On Detailed Inspections A more detailed inspection would include all of the elements of a visual inspection plus some checks that cover the integrity of connections fixtures and fittings In addition to basic visual observations more detailed integrity checks would involve Verify that equipment housings wall boxes and other mechanical ...

Page 20: ...d the Lo is 1 or it can have the above Lo as a lumped value provided the Co is 1 Optionally the load can have the full value of Co and Lo if distributed as in a cable When Pilot Earth Line is not considered intrinsically safe Im 5 25A for 1s Environmental Conditions Temperature Range 20 C Ta 65 C Supply Voltage 24V Model 24Vdc 20 5W 48V Model 48Vdc 20 5W Relay Contacts Contacts 2 x NO 1 x NC 2 x C...

Page 21: ...005R0 13 03 2020 13 12 Page 21 of 21 10 EQUIPMENT LIST Part Number Description 163554 ECD 24VDC IS 163555 ECD 48VDC IS Accessories 141479 P SUPPLY 24V 1A DIN MOUNT 115119 MODULE PTB PILOT TERMINATION FOR ECB D M 169732 RES 100R 5W 1 NA Normally Open Reset Button Contact Ampcontrol ...

Page 22: ...APPENDIX A DRAWINGS ...

Page 23: ...Ampcontrol CSM Pty Ltd ABN 35 000 770 141 ECD User Manual Rev 3 March 2020 ECDB005R0 13 03 2020 13 12 Page 2 of 2 ...

Page 24: ...APPENDIX B APPROVALS ...

Page 25: ...Ampcontrol CSM Pty Ltd ABN 35 000 770 141 ECD User Manual Rev 3 March 2020 ECDB005R0 13 03 2020 13 12 Page 2 of 6 ...

Page 26: ...Ampcontrol CSM Pty Ltd ABN 35 000 770 141 ECD User Manual Rev 3 March 2020 ECDB005R0 13 03 2020 13 12 Page 3 of 6 ...

Page 27: ...Ampcontrol CSM Pty Ltd ABN 35 000 770 141 ECD User Manual Rev 3 March 2020 ECDB005R0 13 03 2020 13 12 Page 4 of 6 ...

Page 28: ...Ampcontrol CSM Pty Ltd ABN 35 000 770 141 ECD User Manual Rev 3 March 2020 ECDB005R0 13 03 2020 13 12 Page 5 of 6 ...

Page 29: ...Ampcontrol CSM Pty Ltd ABN 35 000 770 141 ECD User Manual Rev 3 March 2020 ECDB005R0 13 03 2020 13 12 Page 6 of 6 ...

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