Raychem nVent RMM2-E User Manual

RMM2-E

TRACE-HEATING REMOTE MONITORING MODULE
EXTERNES BEHEIZUNGS-ÜBERWACHUNGSMODUL
MODULE DE SURVEILLANCE À DISTANCE POUR TRAÇAGE ÉLECTRIQUE

МОДУЛЬ ДИСТАНЦИОННОГО КОНТРОЛЯ ЭЛЕКТРООБОГРЕВА

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INSTALLATION INSTRUCTIONS

Description

The nVent RAYCHEM Remote Monitoring
Module (RMM2-E) is part of the 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
RAYCHEM NGC-30 or NGC-40 controller using
a single RS-485 cable.
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

WARNING:

This component is an electrical device. It must be
installed correctly to ensure proper operation and
to prevent frozen pipes, shock or fire. Read and
carefully follow all the installation instructions.

Approvals

RMM2-EX-E:

Hazardous Areas

II 3 G/D T=70°C EExn R II T6

(Ta –20°C to +60°C)
Baseefa03ATEX0739

TC RU C-BE.ИМ43.B.01764

2Ex nR II T6 Gc IP66
Ta -55°C…+60°C

ООО “ТехИмпорт”

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.

Non-Hazardous Areas

RTD and RS-485 circuitry
are isolated from power
mains circuitry by protective
separation.

Tools Required

• 7 mm flat-blade screwdriver

• 3 mm flat-blade screwdriver

• wire stripper/cutter

• 27 mm spanner (for M20 glands)

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Specifications

Supply voltage (nominal): 115/230 Vac, ±10%, jumper selectable, 50/60 Hz
Power consumption: 2,5 VA
Ambient operating range: –40°C to +60°C
–20°C to +60°C (Exn enclosure and glands)
Relative humidity: 5 to 95%, noncondensing
Temperature sensors: 3-wire RTD (Pt 100)

Temperature coefficient: per IEC 751-1983 (100 Ω at 0°C)
Sensor connections: Can be extended with a 3-core shielded cable of 20 Ω max. per

conductor (e.g., 150 m with 3 x 1.5 mm2 cable)
RS-485 connections: Shielded, single twisted pair, max. 1200 m
Replaceable fuse: F 200 mA/250 V, Wickmann part number 19370-034-K (FAST BLOW)

Installation materials (not supplied)

Fasteners

4 screws for 6.5 mm holes for mounting enclosures

Pt 100 temperature sensors (RTDs)

MONI-PT100-NH Temperature sensor for non-hazardous areas with M20 cable gland
MONI-PT100-EXE Temperature sensor for hazardous areas

Remote Monitoring Module (RMM2-E)

1

Fuse (200 mA, 250V)

2

Terminals for power input with provision for

daisy chaining

3

Voltage selector jumpers

4

Terminals for RS-485 bus

5

LEDs which indicate communications

activity

6

LED which indicates power to the

RMM2-Eunit

7

Rotary switch (16 position) to assign

RS-485address

8

Terminals for RTD lead wires

9

Shorting block to select RS-485

terminationmode

60 mm

42 mm

15

mm

75

mm

125 mm

0

Install per nVent RMM2 Instructions Manual nVent Montage- und
Betriebsanleitung beachten Suivre attentivement les intructions
d’installation de nVent

60 mm

42 mm

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mm

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Overview of Installation Procedure for the RMM2-EX-E

A. Mount RMM2-EX-E enclosure and install cables.
B. Connect power and earth wiring and select voltage operating range.
C. Connect RTD cables to the RMM2-EX-E.
D. Select RS-485 address for the RMM2-EX-E and connect the RS-485 bus cables.

Note: Installation to be performed by suitable trained personnel.
Note: Keep the Remote Monitoring Module clean and dry prior to installation to avoid damage to

internal components.

Note: 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

2

.

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.

0

91

160

110

260

240

6.5

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B. Connect Power and Earth Wiring and

Select Voltage Operating Range

3. Select the voltage operating range

Connect the supplied wire jumpers to the
appropriate terminals to select input voltage.
The RMM2-E is supplied jumpered for 230 volts.

4. Connect wiring from power source to

designated terminals on RMM2-E.

Use only copper conductors. Connect power
cable wires to the terminals marked L1 and L2 on
the RMM2-E. 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

2

. (0,2 - 4 mm2 solid wire)

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

2

solid or stranded wires.

Jumpered
for 115V

Jumpered
for 230V

0

2

0

3

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C. Connect RTD Cables to the RMM2-E

The RMM2-E 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 RMM2-E.

Note: Resistance of lead wires from each RTD
must not exceed 20 Ω (e.g. 150 m with
3 x 1,5 mm

2

cable).

0

8

RMM2-E
terminal no.

1

2

3

4

5

6

7

8

Piping drawing
identification

Description or location

6. Connect lead wires from each RTD to the
selected RMM2-E terminal block

The RMM2-E has 8 terminal blocks to connect
lead wires from 8 RTDs. Each RTD connection
is numbered; the number identifies the RTD, and
determines the order in which the RAYCHEM
NGC system displays the RTD measurement.
Therefore, order the RTD connections in a manner
that makes the RAYCHEM NGC system display
most meaningful.
The RMM2-E cover shows the correct wiring
arrangement for the RTD wires. With RAYCHEM
RTDs, connect the two RTD lead wires of the

same colour to the terminals marked “-“ and

connect the RTD lead wire that is a different
colour to the + terminal.

7. If RTD-shield is not earthed elsewhere,
connect shield to earth terminal.

8. Record the location/identification for

eachRTD.

Because the RMM2-E terminal connection
number identifies the RTD in the RAYCHEM
NGC system, it is important to record the
location of each RTD. Use the space below to
record the connections, and label the RMM2-E
or its enclosure with this RTD identification
information.

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D. Select RS-485 Address and Connect the

RS-485 Bus Cables

9. Select the RS-485 address for the

RMM2-Eunit.

Each RMM2-E connected to a RAYCHEM NGC
control and monitoring system must have a
unique address; if two RMM2-E’s are assigned the
same address, communication faults will result.
To ensure that you assign a unique address to
each RMM2-E unit, do the following:

• Review the RAYCHEM NGC system layout; if a
layout document does not exist, create one. If
it has not already been done, assign an RS-485
address to each RMM2-E (up to 16) connected
to the RAYCHEM NGC system.

• If you are adding one or more RMM2-E units to
an existing RAYCHEM NGC network, confirm
that the RS-485 addresses for existing RMM2-E
units correspond to the system layout. See
for details the programming guide of the
RAYCHEM NGC system.

By checking the RS-485 addresses on an existing
system, you can avoid potential conflicts that
would be confusing and time consuming to
troubleshoot otherwise.
Record the RS-485 address selected for the
Remote Monitoring Module you are currently
installing, and label the exterior of the enclosure
with the address assigned to the RMM2-E.
For reference, here are the 16 possible RS-485
addresses: (0 -15 HEXADECIMAL)

0 1 2 3 4 5 6 7

8 9 A B C D E F

10. Set the RS-485 address for the RMM2-E unit
using the rotary switch provided

Take of the lid and use a flat-blade screwdriver to
rotate the RS-485 address switch to the desired
position. The single character visible on the
switch indicates the RS-485 address assigned.

0

7

6

0

11. Connect the RS-485 bus

Note: Do not make connections to the RS-485

bus while it is connected to an operating
RAYCHEM NGC network. Damage and/or alarms
could result.
The RS-485 bus allows units with unique
addresses to be connected together along a
common bus. To add a new unit to the network,
simply connect the RS-485 bus from the last unit
to the new one, or insert the new unit between
two existing units on the bus. The order in which
units are attached to the RS-485 bus does not
matter. There are just two constraints on the
RS-485 network:

• Each RMM2-E must be assigned a unique

address

• The RS-485 bus must be a continuous string

from the first network device to the last
RMM2-E in the system.

Note: The RS-485 bus operates at 5 V, and
equipment connected to it could be damaged by
exposure to higher voltages. Take precautions to
avoid exposing the RS-485 wiring to discharge of
static electricity or other sources of high voltage
potential; in particular, avoid contact with the
power supply wiring.

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The RMM2-E has two sets of terminals for
connections to the RS-485 bus. One terminal
block allows the RMM2-E to connect to the
RS-485 bus, the second allows a continuation of
the bus to other RMM2-E units on the network.
Observe polarity, which is indicated on the
RMM2-E. Connect the incoming RS-485 bus to

the set of terminals marked “IN”, observing the

polarity noted on the cover of the RMM2-E; use

the terminal marked “S” for the shield of the

RS-485 cable. Connect the continuation
of the RS-485 bus to the set of terminals marked

“OUT” in the same manner (not required for the

last RMM2-E in the network).
Important: Do not connect the shield of the
RS-485 cables to the enclosure’s grounding
terminal. Connect the shield only to the RMM2-E
terminals provided. To avoid the potential
for spurious ground loops, the RS-485 cable
shield should be connected to ground only in
the RAYCHEM unit. For the last RMM2-E in the
network, terminate the RS-485 bus by removing
the shorting block on jumper location J17 from
2–3 and placing it across pins 1–2.

OR

NGC-30 via UIT2 NGC-40 via Bridge module

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MONTAGEANLEITUNG

Beschreibung

Das nVent RAYCHEM Überwachungsmodul
(RMM2-E) ist Teil des RAYCHEM NGC Steuer-,
Regel- und Überwachungssystems. An ein
RMM2-E können bis zu 8 Widerstands­Temperatursensoren (Pt 100- Sensor in 3-Leiter­Technik) angeschlossen werden, welche die
Temperaturen der beheizten Oberflächen oder
die Umgebungstemperaturen im Heizsystem
erfassen. Das Steuer- und Überwachungsgerät
RAYCHEM NGC-30 oder NGC-40 kann mit bis
zu 16 RMM2-E-Modulen über ein RS-485-Kabel
kommunizieren.
Wenden Sie sich für weitere technische
Unterstützung wenden Sie sich bitte an die für Sie
zuständige nVent-Vertretung.

Lieferumfang

RMM2-E (ohne Zusatzgehäuse, für den Nicht­Ex-Bereich)

• RMM2-E Externes Beheizungs-Überwachungs-

modul

• Ersatzsicherungen

• Brücken (Jumper) für Spannungswahl

• Aufkleber

RMM2-EX-E (mit Zusatzgehäuse, für
Ex-Bereiche)

• RMM2-EX-E Externes Beheizungs-

Überwachungs modul

• EExn R II T6 glasfaserverstärktes

Polyester-Gehäuse

• 12 Stück M20 Kabelverschraubungen in

Eex e-Ausführung mit Blindstopfen
(für Netzkabel, RS-485-Leitung
und Sensorleitungen, 6-12 mm
Leitungsdurchmesser)

• Ersatzsicherungen

• Brücken (Jumper) für Spannungswahl

WARNUNG:

Bei diesem Gerät handelt es sich um eine
elektrische Vorrichtung. Für den einwandfreien
Betrieb und zur Vermeidung gefrorener
Rohrleitungen, elektrischer Schläge oder
Brände muss das Gerät fachgerecht installiert
werden. Lesen Sie alle Installationsanweisungen
sorgfältig durch und befolgen Sie diese.

Zulassungen

RMM2-EX-E:

Ex-Bereiche:

II 3 G/D T=70°C EExn R II T6
(Ta –20°C to +60°C)
Baseefa03ATEX0739

TC RU C-BE.ИМ43.B.01764

2Ex nR II T6 Gc IP66
Ta -55°C…+60°C

ООО “ТехИмпорт”

Besondere Bedingungen für den

sicherenEinsatz:

Alle nicht verwendeten Öffnungen müssen
mithilfe der vorgesehenen Kabelverschraubung
und des Blindstopfens verschlossen werden.
Auch ein potenzieller Temperaturanstieg
im Gehäuseinneren aufgrund direkter
Wärmeeinwirkung auf die Gehäuseaußenseite
muss berücksichtigt werden.

Non-Hazardous Areas

Die Sensor- und RS-485
Stromkreise sind von den
Netzstromkreisen durch
Schutzvorrichtungen getrennt.

Erforderliches Werkzeug

• 3 mm Schlitz-Schraubendreher

• 7 mm Längsschlitz-schraubendreher

• Abisolierzange/Cutter

• 27 mm Maulschlüssel
(für M20 Verschraubungen)

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Technische Daten

Betriebsspannung: AC 115/230 V, +/- 10%, 50/60 Hz, mit Brücke (Jumper)

wählbar 50/60 Hz
Eigenverbrauch / Nennleistung: 2,5 VA
Einsatztemperaturbereich: –40°C bis +60°C
–20°C bis +60°C (Exn-Gehäuse und Blindstopfen)
Relative Luftfeuchtigkeit: 5 bis 95 %, nicht kondensierend
Temperatursensoren: Pt 100-Temperatursensor in 3-Leiter-Technik

Temperaturkoeffizient: gemäß IEC 751-1983 (100 Ω bei 0°C)

Sensoranschlüsse: Können mit einem 3-adrigen geschirmten Kabel von max.

20 Ω pro Leiter (z.B. 150 m mit einem 3 x 1,5 mm2 -Kabel)

verlängert werden
RS-485-Anschlüsse: Geschirmte, verdrillte 2-Ader-Leitung, max. 1200 m
Ersatzsicherung: F 200 mA/250 V, Wickmann-Ersatzteilnummer

19370-034-K (flink)

Installationsmaterial (im Lieferumfang nicht enthalten)

Halterungen

4 Schrauben für 6,5-mm-Bohrungen zur Gehäusemontage

Pt 100-Temperatursensoren

MONI-PT100-NH Temperatursensor für Nicht-Ex-Bereich mit M20-

Kabelverschraubung
MONI-PT100-EXE Temperaturesensor für Ex-Bereiche (EEx e II T6, Zone1) mit

M20-Kabelverschraubung

Abmessungen (nominal)

1

Sicherung (F 200 mA, AC 250 V)

2

Netzanschlussklemmen mit Möglichkeit für

Daisy-Chaining

3

Brücken (Jumper) zur Netzspannungswahl

4

Anschlussklemmen RS-485-Bus

5

Gelbe LED, Datenübertragung

6

Grüne LED, Netzspannungsanzeige

7

Drehknopfschalter, Adresseneinstellung

16 Positionen

8

Anschlussklemmen für Sensorleitung

(Pt 100 in 3-Leiter-Technik)

9

Brücke (Jumper) RS-485-Netzwerkabschluss

60 mm

42 mm

15

mm

75

mm

125 mm

0

Install per nVent RMM2 Instructions Manual nVent Montage- und
Betriebsanleitung beachten Suivre attentivement les intructions
d’installation de nVent

60 mm

42 mm

15

mm

2

3 4

5

6

7

8

9