EarthLogger EL4+ User Manual
Page 9
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
C
ONNECTORS
BOTTOM Connectors
No.
Name
Description
Legend
#1
AC
AC Supply voltage input
85-264V AC, 50-60Hz
DC
DC Supply voltage input
120-370V DC
#2
AC
AC Supply voltage input
85-264V AC, 50-60Hz
DC
DC Supply voltage input
120-370V DC
#3
Det. Earth
Main earth
#4
Test Earth
Use for testing earth integrity.
Connect to #3 ‘Det.Earth’ if not required
#5
CH-1 AC/DC
Channel 1 AC/DC busbar
#6
CH-1 AC/DC
Channel 1 AC/DC busbar
#7
CH-2 AC/DC
Channel 2 AC/DC busbar
#8
CH-2 AC/DC
Channel 2 AC/DC busbar
#9
CH-3 AC/DC
Channel 3 AC/DC busbar
#10
CH-3 AC/DC
Channel 3 AC/DC busbar
#11
CH-4 AC/DC
Channel 4 AC/DC busbar
#12
CH-4 AC/DC
Channel 4 AC/DC busbar
TOP Connectors
No
Name
Description
Legend
#13
RLY-1
–
COM
Relay-1 Common Contact
#14
RLY-1
–
NO/Front
Relay-1 Normally Open/Front Contact
#15
RLY-1- NC/Back
Relay-1 Normally Closed/Back Contact
#16
RLY-2
–
COM
Relay-2 Common Contact
#17
RLY-2
–
NO/Front
Relay-2 Normally Open/Front Contact
#18
RLY-2
–
NC/Back
Relay-2 Normally Closed/Back Contact
#19
RS485-GND
RS-485 Ground. Internally connected
digital signal ground
#20
RS485-B
RS-485 comms.
#21
RS485-A
RS-485 comms.
#22
Reset
Remote Reset. Momentarily link terminal
#22 & #23 to clear fault
#23
Reset-GND
Remote Reset Ground. Internally
connected digital signal ground
ANT
ANT
Antenna of 3G modem
LAN
LAN
Ethernet RJ45 connector
USB
USB
USB host connector