nVent RAYCHEM RMM2-E Installationsanleitung Seite 4

ENGLISH
EN
WARNING: This component is an electrical device. It must be
DE
installed correctly to ensure proper operation and to prevent
frozen pipes, shock or fire. Read and carefully follow all the
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installation instructions.
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Special conditions for safe use:
All unused entry holes must be sealed using the scheduled cable
gland and stopping plug. Consider the effects of direct heating on
the exterior of the enclosure and the impact this may have on the
internal temperature rise.
Specifications
Supply voltage (nominal):
Power consumption:
Ambient operating range:
Relative humidity:
Temperature sensors:
Temperature coefficient:
Sensor connections:
RS-485 connections:
Replaceable fuse:
Installation materials (not supplied)
Fasteners
4 screws for 6.5 mm holes for mounting enclosures
Pt 100 temperature sensors (RTDs)
MONI-PT100-NH
MONI-PT100-EXE
Installation Instructions
Description
The nVent RAYCHEM Remote Monitoring Module (RMM2-E) is
part of the nVent RAYCHEM NGC control and monitoring system.
The RMM2-E accepts inputs from up to 8 RTDs (3 wire Pt 100
temperature sensors) measuring pipe or ambient temperature in
a trace heating system. Up to 16 RMM2-E units communicate with
a nVent RAYCHEM NGC-30 or NGC-40 controller using a single
RS-485 cable.
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4 nVent.com/RAYCHEM
115/230 Vac, ±10%, jumper
selectable, 50/60 Hz
2,5 VA
–40°C to +60°C
–20°C to +60°C
(Exn enclosure and glands)
5 to 95%, noncondensing
3-wire RTD (Pt 100)
per IEC 751-1983 (100 Ω at 0°C)
Can be extended with a 3-core
shielded cable of 20 Ω max.
per conductor (e.g., 150 m with
3 x 1.5 mm cable)
2
Shielded, single twisted pair,
max. 1200 m
F 200 mA/250 V, Wickmann part
number 19370-034-K (FAST BLOW)
Temperature sensor for non-hazardous areas
with M20 cable gland
Temperature sensor for hazardous areas
For technical assistance, call your local nVent representative or
the nVent service center listed on the last page.
Parts (supplied)
• RMM2-E without enclosure
• RMM2-E Trace-heating Remote Monitoring Module
• Replacement fuses
• Jumper for voltage selection
• Label
Hazardous area unit (RMM2-EX-E)
• RMM2-EX-E Trace-heating Remote Monitoring Module
• Exn R II T6 glassfibre-reinforced polyester enclosure
• 12 Ex e M20 glands for power cable
(6 to 12 mm cable diameter) with mushroom stopping plugs
• Replacement fuses
• Jumper for voltage selection
Overview of installation procedure for the RMM2-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 RMM2-E is used for DIN-rail installation in a local
customised 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
A. Mount enclosure and install cables
1. Select a suitable location for the RMM2-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.
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