EarthLogger EL4+ User Manual
Page 6
Version 1.07
EarthLogger EL4+ User Manual v1.07.docx
© MRD Rail Technologies Pty Ltd
05Sep2018
COMMERCIAL IN CONFIDENCE ©2016 MRD RAIL TECHNOLOGIES PTY LTD WWW.MRD.COM.AU +61 7 3821 5151
2.
P
RODUCT
D
ESCRIPTION
EarthLogger monitors and records the Insulation
Resistance (IR) and or Voltage of up to four attached
circuits (Channels), and four MRD ELD devices. The
device can be setup to recognise when IR or Voltage
drifts out of the acceptable range, and to generate
alerts when such conditions occur.
EarthLogger includes an embedded Web Server able to
control the device, change configurations, and view
logged data.
I
NSULATION
M
ONITORING
EarthLogger alerts system operators if Insulation
Resistance falls below a user-selected trip value for
longer than a pre-set period. Alert devices are:
•
On-screen display
•
Illuminated LED
•
Relay operation to activate external
equipment
•
Communications using Ethernet or 3G/4G
•
SNMP trap notification
For each Channel, there are two User selectable
Insulation Resistance trip values, R
AN1
and R
AN2
,
referred to as Pre-Warning and Warning. The Pre-
Warning value must always be greater than the
Warning.
In the event of an alert, until Reset, the device will
(for the selected channel):
•
Continue to monitor and display the current
IR value
•
Display the highest recorded alert State
(Pre-Warning or Warning)
•
If the IR or Voltage falls below the Warning
level and continues beyond the Trip Delay period
o
Illuminate the corresponding LED
o
Activate Relay(s)
PreWarning and Warning have the following settable parameters:
•
Trip (Response) Value (k
)
•
Trip Delay (seconds)
•
Relay Activated (1 or 2)
•
Activated Relay State (Safe or Non-Safe)
Reset are done manually (on the device) or remotely, using the Web Server or a connected Reset switch.
