nVent RAYCHEM RMM3-EX-E Bedienungsanleitung Seite 5

The communication settings can be changed when required.
Please contact nVent for further details.
For more information on setting the RMM3 / RMM3-24VDC
Modbus addresses, see RMM3 Installation Manual.
Installation procedure for the RMM3(-24VDC)-EX-E
Warning:
• Installation to be performed by suitable trained personnel.
• Keep the Remote Monitoring Module clean and dry prior to
installation to avoid damage to internal components.
• When RMM3 is used for DIN-rail installation in a local
customized panel or enclosure, must be added 10 earth
terminals for earthing of RTD's and power cables. Terminals
should accept wires from 0.2 to 4 mm
Mount enclosure and install cables
1. Select a suitable location for the RMM3-EX-E / RMM3-24VDC-
EX-E enclosure.
The enclosure is suitable for use in Zone 2 areas. Do not
mount in Zone 1 or Zone 0 areas. For installations in Zone 1
areas, contact nVent. Use the dimensions to locate mounting
holes for the enclosure. Mount the enclosure using suitable
screws (hole diameter 6 mm).
2. Install cables
Install power cable(s), RS-485 cable(s) and RTD cables into
enclosure using glands supplied. Keep stopping plugs in
unused entries.
Connect power and earth wiring and select voltage operating
range
3. RMM3: Select the voltage operating range.
Connect the supplied wire jumpers to the appropriate
terminals to select input voltage. The RMM3 is supplied
jumpered for 230 volts.
4. Connect wiring from power source to designated terminals on
RMM3.
Use only copper conductors. Connect power cable wires to the
terminals marked L1 and L2 on the RMM3. If power is being
daisy chained, be sure to maintain polarity of
L1 and L2 wiring for incoming and outgoing wires. The
terminals accept stranded wires from 0.2 – 2,5 mm
(0,2 - 4 mm solid wire)
2
5. Connect earth wiring.
Connect the earth wire(s) to the earth terminals mounted
on the DIN rail. The terminals accept 0,8 - 2,5 mm
stranded wires.
Connect RTD cables to the RMM3
The RMM3 has terminals for 8 three-wire, RTDs (Pt 100
temperature sensors, to IEC 751); do not use other types of RTDs.
Select RTDs appropriate for the usage:
• MONI-PT100-NH Temperature sensor for non-hazardous areas
• MONI-PT100-EXE Temperature sensor for hazardous areas
Install each RTD in accordance with the installation instructions
shipped with it, and run the RTD lead wires to the RMM3.
Note: Resistance of lead wires from each RTD must not exceed
20 Ω (e.g. 150 m with 3 x 1,5 mm
.
2
.
2
solid or
2
cable)
2
3
T
Jumpered
for 115V
2
T
nVent.com/RAYCHEM
EN
DE
FR
RU
Jumpered
for 230V
N N
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