Pub. 42004-553A
Model 379-003 E3 IP MRM (Monitored Relay Module) Station
Page 3 of 4
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-553A.docx
07/20
Installation
CAUTION
—
Do not install this equipment in hazardous areas. Disconnect power before
installing or removing the MRM.
Mounting
The Model 379-003 E3 IP MRM station enclosure is not supplied with conduit or cable gland holes.
1.
Drill or punch openings, at the required locations, before mounting the enclosure.
•
Separate cable entries for power, Ethernet, and input wiring are typically required (see the Wiring
section).
•
Use caution when drilling or punching the enclosure to avoid damaging internal components.
•
Bottom cable entry is recommended to prevent moisture from entering the enclosure and dripping
onto the terminals or circuit boards.
2.
Mount the enclosure to a suitable surface using appropriate (customer-supplied) hardware (see Figure
1 for mounting hole dimensions).
3.
Remove the shipping tie-wrap securing the PCBA to the mounting Snaptrack.
Wiring
The IP MRM station requires 120 to 230 V ac, 50/60 Hz power and an Ethernet connection to the
Elemec3
IP Controller. Connect the eight relay outputs and input contact circuits as needed. Refer to
Pub. 502-20-0672-001 ISS 4 for detailed information on input/output circuits, input/output circuit
connections, and input/output configuration.
Power
Connect 120 to 230 V ac power to terminal block
TB22
, at the top of the panel (see Figure 1).
WARNING
—Ensure proper grounding to protective earthing.
Terminal
TB22-3
provides earth ground termination.
Table 1.. AC Power Termination
Function
Terminal Block
Wire Color
AC Line (hot)
TB22-1
Black
Neutral
TB22-2
White
Ground
TB22-3
Green/yellow
Ethernet Connection
Plug the Category 5 or better Ethernet cable with RJ45 plug from the E3 network into the RJ45 jack,
located on the CPU PCBA (see Figure 1).