MRD EarthSense ESM1 Installation Manual

Insulation monitor

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ESM1 Installation Guide

1. I

NTRODUCTION

There are two ESM1 variants, identical other than power supply needs



ESM1‐A AC Power Required (85‐264 Volts AC, 50‐60Hz)



ESM1‐B DC Power required (9.6‐36 Volts)

This document provides basic information on the installation and connection of

the EarthSense ESM1 Insulation Monitor to an IT system. Complete

information on setup and specification is available from

www.mrd.com.au/dl/esm1‐UM.pdf

The ESM1 features a daylight readable LCD, and all functions can be accessed

and controlled using the two button interface. The current button function is

identified using on‐screen labels, and the menu system is simple to operate

and provides guidance and feedback. Depending on experience and

knowledge, it is possible to install the ESM1 without consulting the manual.

2. P

RODUCT

The ESM1 monitors the Insulation Resistance (IR) of an attached circuit and

alerts system operators if the IR falls below a user‐selected trip value for longer

than a pre‐set period. Alert devices are:



On‐screen display and LED colour/flash



Relay activated devices and External communication using RS485.

There are two User selectable trip values, R

and Alarm. In the event of an alert, until Reset, the device will:



Continue to monitor and display the current IR value



Display the highest recorded alert State (Warning or Alarm)



Display the lowest IR value recorded



Count and Display the number of hours since alert started



Change LED colour and Activate Relay(s) (If the alert state

continues beyond the Trip Delay period)

Warning and Alarm have the following settable parameters:



Trip (Response) Value (k) and Trip Delay (seconds)



Relay Activated (1 or 2) and Activated State ( Normally Open or

Closed)

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.

3. CE

ECLARATION OF

View the CE Declaration of Conformity at http://www.mrd.com.au/dl/esm1‐DoC.pdf

EarthSense ESM1 Insulation Monitor

ESM1 Installation Guide PRINT VERSION.docx

ESM1-A AC Power Supply

ESM1-B DC Power Supply

ESCRIPTION

and R

AN1

ONFORMITY

Commercial in confidence

, referred to as Warning

AN2

Version 1.30

12Sep2017

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Summary of Contents for MRD EarthSense ESM1

Page 1 EarthSense ESM1 Insulation Monitor Version 1.30 12Sep2017 ESM1 Installation Guide PRINT VERSION.docx Commercial in confidence ©MRD Rail Technologies Pty Ltd ESM1 Installation Guide ESM1-A AC Power Supply ESM1-B DC Power Supply 1. I NTRODUCTION There are two ESM1 variants, identical other than power supply needs  ESM1‐A AC Power Required (85‐264 Volts AC, 50‐60Hz)  ESM1‐B DC Power required (9.6‐36 Volts) This document provides basic information on the installation and connection of the EarthSense ESM1 Insulation Monitor to an IT system. Complete information on setup and specification is available from www.mrd.com.au/dl/esm1‐UM.pdf The ESM1 features a daylight readable LCD, and all functions can be accessed and controlled using the two button interface. The current button function is identified using on‐screen labels, and the menu system is simple to operate and provides guidance and feedback. Depending on experience and knowledge, it is possible to install the ESM1 without consulting the manual. 2. P RODUCT ESCRIPTION The ESM1 monitors the Insulation Resistance (IR) of an attached circuit and ...
Page 2 P2 4. I NSTALLATION NSTALLATION OTES  Refer to Wiring Diagram ESM1‐0001  DO NOT connect devices in parallel  Extra care is required when connecting Bus cables to the device. DO NOT allow Bus Connector wires to touch any terminal other than L1 and L2: the device will be damaged  MRD recommends that device is connected to de‐activated bus  Use appropriate Personal Protective Equipment when handling live connections OUNTING TO  The device snap fits to a standard 35mm DIN Rail   Hook the internal hook over one edge of the DIN rail  Rotate the unit toward the DIN Rail until the black clip snaps over the  edge of the rail  To remove the ESM1 from the rail, use an insulated flat blade screwdriver to release the clip: Insert the screwdriver into the gap  between clip and body and rotate until the clip releases the rail.
Page 3 P3 ESM1‐0001 US ONNECTION IAGRAM ESM1‐0001 US ONNECTION IAGRAM RS485 ONNECTIONS ...
Page 4 P4 6. S ETUP AND PERATION Note: Refer to the User Manual for Detailed Instructions. NTERFACE 6.1.1 LCD Screen Other than in Self‐Test mode, the screen is divided into Title Bar zone; Settings zone; Button Label zones. The current button function is indicated on‐screen. The on‐screen menus require single button presses. All menus, option  lists, and value selectors are ‘circular’: repeated pressing of  or will continuously scroll through the options. Note: There are no “Back” or “Undo” options. If an error is made use   to advance through the menu until a Do‐Not‐Save or Exit opportunity appears. The device always requests confirmation before saving changes. 6.1.2 Buttons B1 Label Action B2 Label Action   Highlights the next item in the menu Select the highlighted item Changes the highlighted value by 1 or SETTINGS ...
Page 5 P5 A Self‐Test takes less than 30 seconds. The Self‐Test displays a message if a failure occurs, while continuing background self‐testing until the error state is removed. All configured relays latch following self‐test completion, enabling time to inspect relay operated equipment. Press RESET to release latching. The latching test does not occur at initial power connection. Note: Insulation Monitoring does not occur or continue if the device fails the Self‐Test. ) ASSWORDS UTHENTICATION If enabled, a password authenticates users and enables them to change any device setting. Without a password, user access is limited to viewing the device settings. 6.3.1 Factory Password The Factory Password is set to 674; it cannot be changed, and is required to change the User Password. 6.3.2 Authentication (User Password ON/OFF) Authentication may be turned ON or OFF as required. This typically occurs if the operator is repeatedly accessing the device settings during testing, or if the System Operator has reduced security requirements. The Factory Default Setting is Authentication OFF, and no User Password exists. 6.3.3 User Password The User Password can be changed only if the existing User Password is known; otherwise, the User Password Recovery feature must be used. 6.3.4 Recovery from Lost User Password The device can recover from a lost User Password using the Factory Password. To replace a lost User Password: go to the Pwd Recovery page. The device will provide instructions and feedback. 6.3.5 Entering or Changing Password Values Passwords are stored as three‐digit codes, not numbers. If a mistake is made or if you accidently enter the Change page,  use  and  to advance to the “Try Again?” page. Function Comments Sample Pages  Instructions are on‐screen Enter or ...
Page 6 P6 ARNING ETTINGS The Warning response has three user settable parameters, Recommended Setting (IEC60364‐5‐53) noting that the Trip Value must be higher than the Alarm Set the Warning value to about 100/V (Bus). For value. If you wish to set the Trip Value lower than the current example, if the Bus Voltage is 600V, initially set the Alarm Trip Value, reduce the Alarm value first. Warning to 100x600= 60000 =60k Parameter Options/Comments Sample Pages Activate SETTINGS>Warnings>Warning>CHANGE Warning  Enter Password if requested Settings  The screen displays all current settings  Parameters become selectable. Warning Range: 001 – 999 k Trip Value,  Must be greater than the Alarm Trip Value  Set individual digits  Use to cycle through individual digits.  Use to select the next digit. ...
Page 7 P7 ELAY TATES Relay 1 and Relay 2 can be set to Normally Open or Normally Closed, as required by connected equipment. Note: The Relays fitted to this device Open when the power supply is disconnected. When power is connected, the device reads the stored Relay State setting from memory, and restores this state. This process takes ~300ms i.e. both Relays will be in the Open State for the first ~300ms following supply power connection. Equipment connected to a Normally Closed relay must be configured to compensate for this temporary Open Relay state. The device Self‐Test and Reset functions do not affect the Relay States. Parameter Options/Comments Sample Pages Activate SETTINGS>Warnings>Relay States>CHANGE Relay  Enter Password if requested States  Parameters become selectable  The screen displays all current settings o N/O = Normally Open o N/C = Normally Closed  Use  to highlight Relay to change, or Exit Change  Press to Select Relay  Use  to toggle between Relay States States ...
Page 8 P8 Warranty Congratulations on choosing an MRD EarthSense ESM1. MRD Products are designed and manufactured to the highest standards, and backed with a TWO YEAR Warranty covering materials or manufacturing defects, commencing on the date of customer receipt. Please record your product details below. Model Serial Number Date of Purchase F.PWD Supplier 674 ESM1- _____ __ __ __ __ __ __ __ __ /__ __/20__ __ Conditions MRD warrants your new ESM1 Insulation Monitor shall be free of material or manufacturing defects and shall operate as designed, when installed, used, and maintained according to the ESM1 Installation Guide, Technical Data Sheet, and User Manual. This warranty does not cover:  Normal wear and tear  Problems not caused by materials or manufacturing defects ...