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Summary of Contents for MRD Rail Technologies EarthSense ESM1
- Page 1 ESM1 User Manual v1.12 © MRD Rail Technologies Pty Ltd ESM1 User Manual ESM1-A AC Power Supply ESM1-B DC Power Supply Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151...
- Page 2 +61 7 3821 5151 Email support@mrd.com.au www.mrd.com.au Downloads User Manual www.mrd.com.au/dl/esm1–UM.pdf Datasheet www.mrd.com.au/dl/esm1-DS.pdf Installation Guide www.mrd.com.au/dl/esm1-IG.pdf Wiring Diagram www.mrd.com.au\dl\001.pdf Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151...
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Page 3: Table Of Contents
MODBUS Protocols ....................17 Connection diagram ....................18 6. APPENDICES..................19 Technical Datasheet....................20 Warranty ........................ 21 Wiring Diagrams ....................22 Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 4: Introduction
Reset are done manually (on the device) or remotely (using RS485 or a connected reset switch), or the device can be configured to Auto-Reset if the IR increases above the Warning value. Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 5: Application Notes
Baud rate (from Preset List) • Parity (None, Even, Odd) Sections 4.7, 5.1 and 5.2 provide guidance for RS485 connection and configuration. Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 6: Notes On Trip Delay, Hysteresis And Automatic Reset
Insulation Resistance rises above the relevant hysteresis level. The diagram below shows the ESM1 response characteristic, assuming Trip Delays are zero. Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 7: User Authentication
• Connect supply voltage to A1 & A2. DC supply must observe polarity Power Supply • Use an in-line 2A fuse Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 8: Optional Connections
To implement this, use a separate test earth stake, and connect to terminal TE. Connect the main earth to terminal 3.4 AC B ESM1-001 ONNECTION IAGRAM 3.5 DC B ESM1-001 ONNECTION IAGRAM Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 9: Setup And Operation
Device has failed Self-Test (see LCD display) BLUE Self-Test in Progress, or Device is in SETTINGS mode PURPLE Firmware Upgrade in progress Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 10: Default Settings
Relay Type: Normally Open • RS485 ID: 1 • Baud Rate: 19200 • Parity: None • Other Auto-Reset: Off Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 11: Basic Operation
G), or via the left push button. The reset option will not appear unless the earth leakage is removed. It is possible to reset from the alarm stage back to the warning stage. Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 12: Self-Test
1. Latching test does not occur at initial Power Supply connection 2. Note: Insulation Monitoring does not occur or continue if the device fails the Self-Test. Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 13: Passwords (Authentication)
Try Again • SAVE the New Password when prompted • A splash page confirms successful change Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 14: Warning Settings
• Press to toggle the Relay choice. • The Warning may activate the same relay as the Alarm. Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 15: Alarm Settings
to toggle the Relay choice. • The Alarm may activate the same relay as the Warning if required. Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 16: Relay States
(Set individual digits) Baud rate 2400; 4800; 9600; 19200; 38400; 115200 (Select from list) Parity Odd; Even; None (Select from list) Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 17: Rs485 Communications
Parity setting 0: None 1: odd 2: even 40005 Holding Factory Reserve Factory Reserve 40006 Holding Factory Reserve Factory Reserve Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 18: Connection Diagram
© MRD Rail Technologies Pty Ltd 5.2 C ONNECTION DIAGRAM Note: Earth Cable Shield AT ONE POINT ONLY End of Manual Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 19: Appendices
EarthSense ESM1 Page 19 Version 1.12 04/02/2025 ESM1 User Manual v1.12 © MRD Rail Technologies Pty Ltd 6. A PPENDICES Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 20: A1 Technical Datasheet
Page 20 Version 1.12 04/02/2025 ESM1 User Manual v1.12 © MRD Rail Technologies Pty Ltd A1 T ECHNICAL ATASHEET Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 21: A2 Warranty
EarthSense ESM1 Page 21 Version 1.12 04/02/2025 ESM1 User Manual v1.12 © MRD Rail Technologies Pty Ltd A2 W ARRANTY Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151... -
Page 22: A3 Wiring Diagrams
IAGRAMS • 2-wire DC • 3-Wire DC • 2 Wire AC • 4 Wire AC • 3 Wire AC Commercial in Confidence © MRD Rail Technologies Pty Ltd, 235 South St, Cleveland QLD 4163 Australia www.mrd.com.au +61 7 3821 5151...
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