Emerson Rosemount 2460 User manual

Quick Start Guide
00825-0100-2460, Rev AA
September 2020
Rosemount™ 2460 System Hub

Contents
About this guide...........................................................................................................................3
Overview......................................................................................................................................5
General information...................................................................................................................11
Installation................................................................................................................................. 12
Configuration.............................................................................................................................35
Operation...................................................................................................................................58
Product certifications................................................................................................................. 59
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2 Rosemount 2460 Tank Hub

1 About this guide
This Quick Start Guide provides basic guidelines for installation and
configuration of the Rosemount 2460 System Hub.
NOTICE
Read this manual before working with the product. For personal and system
safety, and for optimum product performance, ensure you thoroughly
understand the contents before installing, using, or maintaining this
product.
For equipment service or support needs, contact your local Emerson
Automation Solutions/Rosemount Tank Gauging representative.
Spare Parts
Any substitution of non-recognized spare parts may jeopardize safety.
Repair, e.g. substitution of components etc, may also jeopardize safety and
is under no circumstances allowed.
Rosemount Tank Radar AB will not take any responsibility for faults,
accidents, etc caused by non-recognized spare parts or any repair which is
not made by Rosemount Tank Radar AB.
CAUTION
Make sure that there is no water or snow on top of the lid when it is opened.
This may damage the electronics inside the housing.
CAUTION
Be careful when opening the lid in very low temperatures. High humidity and
temperatures far below the freezing point may cause the gasket to get stuck
to the lid. In that case you may use a heating fan to warm the housing in
order to release the gasket. Be careful not to use excess heat which may
damage the housing and electronics.
CAUTION
The products described in this document are NOT designed for nuclear-
qualified applications. Using non-nuclear qualified products in applications
that require nuclear-qualified hardware or products may cause inaccurate
readings. For information on Rosemount nuclear-qualified products, contact
your local Emerson Sales Representative.
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WARNING
Failure to follow safe installation and servicing guidelines could result in
death or serious injury.
•Ensure only qualified personnel perform the installation.
•Use the equipment only as specified in this manual. Failure to do so may
impair the protection provided by the equipment.
•Do not perform any service other than those contained in this manual
unless you are qualified.
•Substitution of components may impair Intrinsic Safety.
Explosions could result in death or serious injury.
•Verify that the operating atmosphere of the transmitter is consistent
with the appropriate hazardous locations certifications.
•Do not remove the gauge cover in explosive atmospheres when the
circuit is alive.
High voltage that may be present on leads could cause electrical shock.
•Avoid contact with the leads and terminals.
•Ensure the mains power to the device is off and the lines to any other
external power source are disconnected or not powered while wiring the
device.
Electrical shock could cause death or serious injury.
•Use extreme caution when making contact with the leads and terminals.
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or
misconfiguration of end users’ equipment. This could be intentional or
unintentional and needs to be protected against.
Physical security is an important part of any security program and
fundamental to protecting your system. Restrict physical access by
unauthorized personnel to protect end users’ assets. This is true for all
systems used within the facility.
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2 Overview
2.1 Communication
The Rosemount Tank Gauging system supports various communication
interfaces for field devices, TankMaster PC and other host computers.
Figure 2-1: Typical Configuration of a Rosemount 2460 System Hub
A I
F
J J
K
L
M
O
G
C
E
H
N
D
B
E
A. TankMaster
B. USB, RS232
C. Modem
D. Ethernet (Modbus TCP), RS232, RS485
E. TRL2, RS485
F. DCS/Other hosts (TRL2, RS485, RS232)
G. Rosemount 2460 System Hub
H. Modbus RTU/TCP
I. Other hosts
J. Field devices
K. Tankbus
L. Rosemount 2410 Tank Hub
M. Primary bus: TRL2, RS485
N. TRL2, RS485, other vendors
O. Secondary bus: Enraf, Whessoe and others, HART 4-20 mA analog
output/input
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The Rosemount 2460 System Hub collects measurement data from field
devices and transmits the data to a host system. It also handles
communication from a host to the field devices.
The Rosemount 2460 supports a number of host communication interface
standards such as Ethernet, TRL2, RS485, and RS232. TRL2 and RS485 are
supported for field device communication also, as well as other standards
such as Enraf and Digital Current Loop (Whessoe).
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2.2 Components
This section shows the various parts of the Rosemount 2460 System Hub.
Note
The Rosemount 2460 is designed for use in non-hazardous areas.
Figure 2-2: Rosemount 2460 System Hub Front and Top View
A
B
CE
F
G
D
A. Main label
B. Locking ring for securing lid
C. External ground terminal (M5 screw, flat, lug dimension max. 10 x 4
mm)
D. LEDs for status and error messages
E. Cable entries (Nine (9) M20 x 1.5, Two (2) M25 x 1.5)
F. Lid (can be removed by removing the locking ring)
G. Terminal compartment with communication boards and ports
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Figure 2-3: Cable Entries
A
D
E F G
C
B
A. Cable entry M25
B. Cable entries (6 x M20 x 1.5)
C. Cable entry M25 (power)
D. Membrane
E. Cable entries (3 x M20 x 1.5)
F. Cable entry for Ethernet connection ETH 1
G. Cable entry for Ethernet connection ETH 2
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Figure 2-4: Inside the Rosemount 2460 System Hub
G
H
I
A
B
C
D
F
J
E
A. Communication boards
B. Write protection switch
C. Terminal board / ports (1 to 8)
D. Ethernet ports
E. USB port
F. SD memory card slot
G. LEDs (power=green, status=yellow, error=red)
H. Power input connector (IEC C16)
I. Fuses
J. Ground bar
Note
For signal/shield wire ground only.
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2.2.1 Write protection switch
The Rosemount 2460 System Hub is equipped with a write protection switch
for preventing unauthorized changes of the 2460 configuration database.
Figure 2-5: Write protection
OFF
ON
A
A. Write protection switch
In addition to the switch, the Rosemount 2460 supports software write
protection.
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3 General information
3.1 Service support
For service support contact the nearest Emerson Automation Solutions /
Rosemount Tank Gauging representative. Contact information can be found
on the web site www.Emerson.com.
3.2 Product recycling/disposal
Recycling of equipment and packaging should be taken into consideration
and disposed of in accordance with local and national legislation/
regulations.
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4 Installation
4.1 Installation considerations
The Rosemount 2460 System Hub may be installed on various non-
hazardous locations at the plant.
•In case the system hub is exposed to long periods of sunshine, a
sunshade should be used to prevent the system hub from being heated
to temperatures above the maximum operating temperature. Sunshade
is to be manufactured and designed locally to suit the installation.
•Ensure that environmental conditions are within specified limits.
•Ensure that the system hub is installed such that it is not exposed to
higher pressure and temperature than specified.
•Do not install the system hub in non-intended applications, for example
environments where it may be exposed to extremely intense magnetic
fields or extreme weather conditions.
•Use an external circuit breaker in order to make sure that power supply
can be safely disconnected when wiring and servicing the system hub.
The circuit breaker shall be easily accessible and appropriately labeled.
•In case devices from other vendors will be connected to the system hub,
ensure that correct modem cards are installed for the field ports that will
be used.
•Ensure that correct firmware version is used that supports the desired
communication options and features.
•Ensure that TankMaster version 6.B6 or higher is used for Rosemount
2460 configuration.
•TankMaster 6.C0 and higher is required for configuration of Enraf
communication on field ports.
•TankMaster 6.D0 and higher is required for configuration of redundant
system hubs.
Important
Check the system hub for any signs of damage prior to installation.
Ensure that O-rings and gaskets are in good condition.
Check that all modems are firmly mounted in their slots and cannot move.
Related information
Rosemount 2460 reference manual
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12 Rosemount 2460 Tank Hub

4.1.1 Installation planning
It’s recommended to plan the installation in order to ensure that all
components in the system are properly specified. The planning stage should
include the following tasks:
•Make a plan of the site and specify suitable locations for the devices
•Consider power budget
•Specify cabling and connections (for example whether devices will be
“daisy-chained” or not)
•Specify cable glands that will be needed for the various devices
•Specify location of terminators on the Tankbus (Rosemount 2410 Tank
Hub)
•Make a note of identification codes such as Unit ID/Device ID of each
device
•Assign communication addresses for level gauges and other tank devices
to be stored in the Tank Databases(1) of the Rosemount 2460 System
Hub and Rosemount 2410 Tank Hub
See Electrical installation for more information on cables and glands.
(1) See the Rosemount Tank Gauging System Configuration Manual (Document no.
00809-0300-5100) and the Rosemount 2410 Tank Hub Reference Manual
(Document no. 00809-0100-2410) for more information.
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4.2 Mechanical installation
The housing of the Rosemount 2460 is designed with four holes for
attaching it to a wall using four screws. See also Mechanical Installation
Drawing D7000001-927 for further information.
Prerequisites
Note
Ensure that the Rosemount 2460 is installed in a way that minimizes
vibration and mechanical shock.
Procedure
1. Mark the positions of the four screws to be used for attaching the
2460 to the wall. A mounting template (see Figure 4-1) is shipped
with the 2460 which may be used for this purpose.
2. Drill four holes with appropriate size to fit screw diameter 6 mm.
3. Loosen the two screws (M6 x 2) on the Rosemount 2460 housing that
keep the lid in closed position and open the lid.
M6
M6
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4. Attach the Rosemount 2460 to the wall. There are four holes on the
housing to be used for the screws.
The required screw dimension is given by Figure 4-2.
A
AA
ACB
A. Holes (x4) for attaching the system hub to a wall
B. Communication board compartment
C. Lock ring
5. Ensure that the Lock ring (C) on the cover to the communication
board compartment is folded so that it does not prevent the lid from
being properly closed. Close the lid and ensure that it is fully engaged
to prevent water from entering the terminal compartment. Torque
the two screws to 4 Nm (35 in.-lb).
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4.2.1 Mounting template
A mounting template is shipped with the Rosemount 2460 which can be
used to mark the position of the holes (see Figure 4-1).
Figure 4-1: Mounting Template with Hole Pattern for the Rosemount
2460 System Hub
292 mm
Ø 6 mm (4x)
214 mm
39 mm
213 mm
Make sure that the four screws meet the specifications given in Figure 4-2.
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Figure 4-2: Rosemount 2460 System Hub Dimensions
A
36 (4x)
87
B
A. Four holes Ø 6.5 mm
B. Ø 12.5 mm (4x); Maximum dimension of screw head
Dimensions are in mm.
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4.3 Electrical installation
4.3.1 Electrical installation drawing
See Electrical Installation Drawing D7000001-928 for further information.
4.3.2 Cable entries
The Rosemount 2460 housing has nine M20 x 1.5 and two M25 x 1.5 entries.
Connections must be made in accordance with local or plant electrical
codes.
Make sure that unused cable entries are properly sealed to prevent moisture
or other contamination from entering the terminal board compartment of
the electronics housing.
NOTICE
Thread sealing (PTFE) tape or paste on male threads of conduit is required to
provide a water/dust tight conduit seal and to meet the required degree of
ingress protection as well as to enable future removal of the plug/gland.
Use the enclosed metal plugs to seal unused cable entries in order to achieve
required level of ingress protection. The plastic plugs mounted at delivery
are not sufficient as seal.
4.3.3 Power supply
The Rosemount 2460 System Hub accepts supply voltage 100 - 250 Vac
(50/60 Hz) and 24 - 48 Vdc.
Note
The Rosemount 2460 is polarity insensitive for DC voltage input.
4.3.4 Cable selection for power supply
Appropriate cross sectional area of wires must be used in order to prevent a
high voltage drop to the connected device. Recommended cable size is 0.75
mm2 to 2.1 mm2 (18 AWG to 14 AWG) in order to minimize the voltage
drop.
4.3.5 Grounding
The housing should always be grounded in accordance with national and
local electrical codes. Failure to do so may impair the protection provided by
the equipment. The most effective grounding method is direct connection
to earth ground with minimal impedance.
There is a grounding screw on the housing which is identified by ground
symbol .
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Inside the Rosemount 2460’s terminal compartment there is a ground bar
with screw connections identified by ground symbols . The ground bar
shall only be used for connecting signal related ground wires, e.g. shield
ground connections from the field bus harness. The protective earth ground
connection shall be connected to the system hub via the dedicated power
board IEC plug and the external grounding screw on the housing.
Connect shield to ground at one end only, otherwise a ground loop may
occur.
NOTICE
Grounding the device via threaded conduit connection may not provide
sufficient ground.
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4.3.6 Connecting to a Rosemount 2460 System Hub
There are several ways to connect a Rosemount 2460 System Hub to a host
system:
•from a Host Port using TRL2 bus
•from a Host Port using RS232 or RS485
•via Ethernet Eth1 port
The TRL2 Bus requires a twisted and shielded pair cable with a cross-
sectional area of 0.50 to 2.5 mm2 (20 to 14 AWG). A Rosemount 2180 Field
Bus Modem (FBM) is used to connect the system hub to TankMaster or other
host computer.
A service PC can be connected to the Ethernet Eth3 port for configuration
and maintenance.
For RS232 communication, wiring cross-sectional area must be at least 0.25
mm2 (24 AWG or similar). The typical maximum length of the RS232
connection is 30 m at baud rate 4800.
Table 4-1: Data Rate and Maximum Distances for RS232 Communication
Baud rate (bps) Distance (m)
2400 60
4800 30
9600 15
19200 7.6
Communication ports for hosts and field devices
The Rosemount 2460 System Hub has eight ports for communication
interface boards. It is equipped with interface boards for field device
communication and host communication. The specific configuration is
specified in the ordering information. Communication boards can easily be
exchanged if needed.
Port 8 is used for TankMaster communication. Port 7 is used for host or
TankMaster communication as specified in the ordering information.
Port 1 to Port 4 are used for field device communication.
Ports 5 and 6 can be used for host or field device communication as specified
in the ordering information. This allows you to vary the number of field and
host ports depending on the specific requirements.
Table 4-2 shows various configuration options for a system hub.
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