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¢00825-0100-4696+¤
Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
Rosemount 848L Discrete
Logic Transmitter with
F
OUNDATION
™
Fieldbus
Step 1: Mount the Transmitter
Step 2: Wire and Apply Power
Step 3: Verify Transmitter Configuration
Product Certifications
Start
End
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Product Discontinued
Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
© 2004 Rosemount Inc. All rights reserved. All marks property of owner.
Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc.
IMPORTANT NOTICE
This installation guide provides basic guidelines for the Rosemount
848L. It does not provide instructions for detailed configuration,
diagnostics, maintenance, service, troubleshooting. Refer to the
Rosemount 848L reference manual (document number
00809-0100-4696) for more instruction. The manual and this QIG
are also available electronically on www.rosemount.com.
WARNING
Explosions could result in death or serious injury:
Installation of this transmitter in an explosive environment must be
in accordance with the appropriate local, national, and international
standards, codes, and practices. Please review the approvals
section of this manual for any restrictions associated with a safe
installation.
Electrical shock can result in death or serious injury
Avoid contact with the leads and terminals. High voltage that may
be present on leads can cause electrical shock.
Emerson Process
Management
Rosemount Inc.
8200 Market Boulevard
Chanhassen, MN USA
55317
T (US) (800) 999-9307
T (Intnl) (952) 906-8888
F (952) 949-7001
Rosemount
Temperature GmbH
Frankenstrasse 21
63791 Karlstein
Germany
T 49 (6188) 992 0
F 49 (6188) 992 112
Emerson Process
Management Asia Pacific
Private Limited
1 Pandan Crescent
Singapore 128461
T (65) 6777 8211
F (65) 6777 0947 / (65) 6777 0743
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 1: MOUNT THE TRANSMITTER
Mount to a DIN Rail Without a Junction Box
Mounting to a Panel with a Junction Box
1. Pull up the DIN rail
mounting clip located on
the top back side of the
transmitter.
2. Hinge the DIN rail into
the slots on the bottom
of the transmitter.
3. Tilt the 848L and place
onto the DIN rail.
Release the mounting
clip.
Figure 1. Mounting the 848L to a DIN Rail
Figure 2. Aluminum/Plastic
Junction Box
Figure 3. Stainless Steel
Junction Box
Mount using four
1
/4-20 x 1.25-in. screws
Mount using two
1
/4-20 x
1
/2-in. screws
DIN Rail Mounting Clip
848L without
enclosure
DIN Rail
Aluminum or Plastic Junction Box
Panel
Mounting
Screws (4)
Stainless Steel Junction Box
Panel
Mounting
Screws (2)
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 1 CONTINUED...
Mounting to a 2-Inch Pipe Stand
Use the optional mounting bracket (option code B6) to mount the 848L
to a 2-inch pipe stand when using a junction box.
Figure 4. Aluminum/Plastic Junction Box
Front View Side View
Figure 5. Stainless Steel Junction Box
Front View Side View
* Fully Assembled
5.1
(130
10.2
(260)
6.6 (167)*
4.5 (114)
7.5 (190)*
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 1 CONTINUED...
STEP 2: WIRE AND APPLY POWER
Bus power is polarity insensitive, allowing the user to connect positive
(+) or negative (–) screw terminals to either Fieldbus wiring terminal
labeled “Bus.” I/O power terminals are polarity sensitive and proper
connection must be made to avoid damaging the unit.
Using Cable Glands
1. Unscrew the four cover screws to remove the junction box cover.
2. Run the sensor and power/signal wires through the appropriate
cable glands using the pre-installed cable glands.
3. Install the discrete I/O wires into the correct screw terminals.
4. Install the power/signal wires onto the correct screw terminals.
5. Replace the enclosure cover and tighten all cover screws.
Figure 6. Mounted on a Vertical Pipe
Aluminum/Plastic Junction Box Stainless Steel Junction Box
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 2 CONTINUED...
Using Conduit Entries
1. Unscrew the four cover screws to remove the junction box cover.
2. Remove the five conduit plugs. Install the user-supplied conduit
fittings.
3. Run pairs of discrete I/O wires through each conduit fitting.
4. Install the discrete I/O wires into the correct screw terminals.
5. Install the power/signal wires into the correct screw terminals.
6. Replace the enclosure cover and tighten all cover screws.
Discrete I/O Wiring and Power Supply
• 8 NAMUR, Voltage Inputs, or dry-contact sensors and four voltage
discrete outputs
• Operates between 9.0 and 32.0 VDC bus power, 22mA maximum
• The electronics are powered over Foundation fieldbus with
standard fieldbus power supplies and separate DC power for the
inputs and outputs.
• Use ordinary copper wire of sufficient size to ensure that the
voltage across the transmitter bus power terminals does not drop
below 9 VDC.
Cable Gland Conduit Entries
A = I/O F = I/O A = I/O D = I/O
B = I/O G = I/O B = I/O E = Power/Signal
C = I/O H = I/O C = I/O F = Cover Screw
D = I/O I = Power/Fieldbus
E = I/O J = Cover Screw
A
C
E
G
I
B
D
F
H
J
A
B
C
D
E
F
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 2 CONTINUED...
Figure 7. Rosemount 848L Wiring Diagram
Discrete Input Wiring Configuration
Discrete Output Wiring Configuration
2-Wire NAMUR Sensors
1 of 2 Input Connectors
Dry Contact Switches
1 of 2 Input Connectors
3-Wire NAMUR Sensors
1 of 2 Input Connectors
9-32 VDC Sensors
1 of 2 Input Connectors
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 2 CONTINUED...
Typical Configuration for Fieldbus Networking
NOTE
Each segment in a fieldbus trunk must be terminated at both ends.
STEP 3: VERIFY TRANSMITTER CONFIGURATION
Each Foundation fieldbus host or configuration tool has a different way
of displaying and performing configurations. Some use Device
Descriptions (DD) or DD methods for configuration and to display data
consistently across platforms. There is no requirement that a host or
configuration tool support these features.
The following is the minimum configuration requirement for a
measurement. This guide is designed for systems not using DD
methods. For a complete list of parameters and configuration
information refer to the Rosemount 848L Reference Manual
(document number 00809-0100-4697).
Power
Supply
Terminators
Integrated Power
Conditioner and Filter
(Spur)
(Spur)
FOUNDATION
fieldbus Host or
configuration tool
6234 ft (1900 m) max
(Trunk)
Signal Wiring
Devices 1 through 16*
(depending upon cable characteristics)
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 3 CONTINUED...
I/O Transducer Block
The 848L is ordered with either Dry Contact, VDC or NAMUR Inputs.
Each input can have a filter which determines the minimum time a
contact needs to be at a given state to be acknowledged as a state
change.
The following procedure allows the sensors to be configured:
1. Set MODE_BLK.TARGET to OOS
2. For each Input “n” select the parameter IN_n_CONFIG.FILTER
a. Select the desired filter time in the range of 0 to 128msec
3. Set MODE_BLK.TARGET to AUTO
Resource Block
The resource block defines the physical resources of the device, such
as measurement and memory. The resource block also handles
functionality that is common across multiple blocks. The block has no
linkable inputs or outputs, and it performs memory-level diagnostics.
Digital Input Blocks
The DI blocks are used to communicate the current value of a contact,
the state of one of the Boolean equations, or the state of an output.
The DI block chooses the value through the Channel parameter.
Alternatively, the DI block can be configured to pass 8 values in a
packed format to the host system (DeltaV) by using the appropriate
channels. To set the channel number use the following procedure for
each DI block.
1. Set MODE_BLK.TARGET to OOS
2. Select the Channel parameter
3. Select the desired channel number
4. Set MODE_BLK.TARGET to AUTO
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 3 CONTINUED...
Digital Output Blocks
The digital output blocks are used to receive a value from another
device to be used to either drive a contact output or to use in the logic
equations. The DO blocks make their values available to the 848L by
placing the value in a variable called DO (n) where n=1 to 4. Like the
DI block, all four outputs can be communicated in a packed format by
selecting the appropriate channel number.
Logic Transducer Block
Logic Equations
The 848L provides for 16 Logic Equations and 4 Output Equations.
The Output Equations drive the hardware outputs. Each logic equation
consists of up to 80 characters with the last character a semicolon.
The equations are evaluated a nominal rate of 100msec. However this
will vary based on the number and complexity of the equations used.
The logic block consists of variables that are connected to the
hardware I/O, obtain values or send values over the bus and internally
calculated variables.
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
PRODUCT CERTIFICATIONS
Approved Manufacturing Locations
Rosemount Inc. — Chanhassen, Minnesota USA
Emerson Process Management Asia Pacific
Private Limited — Singapore
Rosemount Temperature GmbH - Karlstein, Germany
European Directive Information
The EC declaration of conformity for all applicable European directives
for this product can be found on the Rosemount website at
www.rosemount.com. A hard copy may be obtained by contacting our
local sales office.
Hazardous Locations Certificates
North American Approvals
Factory Mutual (FM) Approvals
N5 Nonincendive for Class I, Division 2, Groups A, B, C, D
when installed per Rosemount drawing 00848-1035.
Temperature code: T4 (T
amb
= –40°C to 60°C)
Canadian Standards Association (CSA) Approvals
N6 Suitable for Class I, Division 2, Groups A, B, C, D
when installed per Rosemount drawing 00848-1036.
Temperature code: T4 (T
amb
= –40°C to 60°C)
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
European Approvals
N1 ATEX Type n
Certification Number: Baseefa04ATEX0027X
ATEX Marking II 3 G
EEx nA nL IIC T4 (T
amb
= –40°C to 50°C)
Power/Bus Input Parameter: U
i
= 32.0 V
Special Conditions for Safe Use (x):
1. The ambient temperature range of use shall be the most restrictive
of the apparatus, cable gland or blanking plug.
2. The apparatus is not capable of withstanding the 500V insulation
test required by Clause 9.4 of EN 50021:1999 or Clause 8.1 of EN
60079:2003. This must be taken into account when installing the
apparatus.
3. Component approved EEx e cable entries must be used so as to
maintain the ingress protection of the enclosure to at least IP54.
4. Any unused cable entry holes must be filled with component
approved EEx e blanking plugs.
NC ATEX Type n Component
Certification Number: Baseefa04ATEX0026U
ATEX Marking II 3 G
EEx nA nL IIC T4 (T
amb
= -40°C to 50°C)
Special Conditions for Safe Use (x):
1. The component must be installed in a suitable certified enclosure
capable of withstanding an impact of 7.0J.
2. The apparatus is not capable of withstanding the 500V insulation
test required by Clause 9.4 of EN 50021:1999 or Clause 8.1 of EN
60079:2003. This must be taken into account when installing the
apparatus.
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
ND ATEX Dust Ignition Proof
Certification Number: Baseefa04ATEX0028X
ATEX Marking II 1 D
T90C (T
amb
= – 20°C to 65°C)
1180
Special Conditions for Safe Use (x):
1. Component approved EEx e cable entries must be used so as to
maintain the ingress protection of the enclosure to at least IP66.
2. Any unused cable entry hole must be filled with component
approved EEx e blanking plugs.
3. The ambient temperature range of use shall be the most
restrictive of the apparatus, cable gland or blanking plug.
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
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Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
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