Endress+Hauser RID14 User manual

Products Solutions Services
Operating Instructions
RID14
Fieldbus indicator
with PROFIBUS® PA protocol
0
10
20
30
40 50
BA01267K/09/EN/02.15
71288590

RID14 Table of contents
Endress+Hauser 3
Table of contents
1 Document information .............. 4
1.1 Document function ..................... 4
1.2 Document conventions ................... 4
2 Safety instructions .................. 6
2.1 Requirements for the personnel ............ 6
2.2 Designated use ........................ 6
2.3 Workplace safety ....................... 6
2.4 Operational safety ...................... 6
2.5 Product safety ......................... 7
3 Identification ....................... 8
3.1 Device designation ...................... 8
3.2 Scope of delivery ....................... 8
3.3 Certificates and approvals ................ 8
4 Installation ....................... 10
4.1 Incoming acceptance, transport, storage ..... 10
4.2 Installation conditions .................. 10
4.3 Installation instructions ................. 11
4.4 Post-installation check .................. 12
5 Wiring ............................ 13
5.1 Connecting the cable to the field indicator ... 13
5.2 Connection to PROFIBUS® PA ............ 14
5.3 PROFIBUS® PA cable specifications ........ 16
5.4 Degree of protection ................... 19
5.5 Post-connection check .................. 19
6 Operating the field indicator ....... 21
6.1 Quick operation guide .................. 21
6.2 Display and operating elements ........... 22
6.3 PROFIBUS® technology ................. 22
6.4 Configuration of the field indicator ......... 24
6.5 Hardware settings ..................... 25
7 Commissioning .................... 28
7.1 Post-installation check .................. 28
7.2 Switching on the field indicator ........... 28
7.3 Commissioning ....................... 28
8 Maintenance ...................... 29
9 Accessories ....................... 30
9.1 Device-specific accessories ............... 30
9.2 Communication-specific accessories ........ 30
10 Troubleshooting .................. 31
10.1 Troubleshooting instructions ............. 31
10.2 Status messages ...................... 32
10.3 Spare parts .......................... 32
10.4 Software history and overview of
compatibility ......................... 34
11 Return ............................ 35
12 Disposal .......................... 36
13 Technical Data .................... 37
13.1 Communication ....................... 37
13.2 Power supply ......................... 37
13.3 Installation .......................... 38
13.4 Environment ......................... 38
13.5 Mechanical construction ................ 40
13.6 Operability .......................... 41
13.7 Certificates and approvals ............... 41
13.8 Documentation ....................... 42
14 Appendix ......................... 43
14.1 DTM operating parameters .............. 43
Index .................................. 52

Document information RID14
4 Endress+Hauser
1 Document information
1.1 Document function
These Operating Instructions contain all the information that is required in various phases
of the life cycle of the device: from product identification, incoming acceptance and
storage, to mounting, connection, operation and commissioning through to
troubleshooting, maintenance and disposal.
1.2 Document conventions
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Electrical symbols
Symbol Meaning
A0011197
Direct current
A terminal to which DC voltage is applied or through which direct current flows.
A0011198
Alternating current
A terminal to which alternating voltage is applied or through which alternating current flows.
A0017381
Direct current and alternating current
• A terminal to which alternating voltage or DC voltage is applied.
• A terminal through which alternating current or direct current flows.
A0011200
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a grounding
system.
A0011199
Protective ground connection
A terminal which must be connected to ground prior to establishing any other connections.
A0011201
Equipotential connection
A connection that has to be connected to the plant grounding system: This may be a potential
equalization line or a star grounding system depending on national or company codes of practice.
A0012751
ESD - Electrostatic discharge
Protect the terminals against electrostatic discharge. Failure to comply with this instruction can
result in the destruction of parts or malffunction of the electronics.

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1.2.3 Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation
Reference to page
Reference to graphic
,… ,
Series of steps
Result of a sequence of actions
Help in the event of a problem
Visual inspection
1.2.4 Symbols in graphics
Symbol Meaning
1, 2, 3,... Item numbers
,… ,
Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
A0013441
Flow direction
-
A0011187
Hazardous area
Indicates a hazardous area.
.
A0011188
Safe area (non-hazardous area)
Indicates a non-hazardous area.
1.2.5 Tool symbols
Symbol Meaning
A0011220
Flat blade screwdriver
A0011221
Allen key
A0011222
Open-ended wrench
A0013442
Torx screwdriver

Safety instructions RID14
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2 Safety instructions
2.1 Requirements for the personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfill
the following requirements:
‣Trained, qualified specialists must have a relevant qualification for this specific function
and task
‣Are authorized by the plant owner/operator
‣Are familiar with federal/national regulations
‣Before beginning work, the specialist staff must have read and understood the
instructions in the Operating Instructions and supplementary documentation as well as
in the certificates (depending on the application)
‣Following instructions and basic conditions
The operating personnel must fulfill the following requirements:
‣Being instructed and authorized according to the requirements of the task by the
facility's owner-operator
‣Following the instructions in these Operating Instructions
2.2 Designated use
• The device is a field indicator designed for connection to a fieldbus.
• The device is designed for installation in the field.
• The manufacturer accepts no liability for damages resulting from incorrect use or use
other than that designated.
• Safe operation is only guaranteed if operators comply strictly with the Operating
Instructions.
• Only operate the device in the designated temperature range.
2.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
2.4 Operational safety
Risk of injury.
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for interference-free operation of the device.
Conversions to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If, despite this, modifications are required, consult with Endress+Hauser.
Repair
To ensure continued operational safety and reliability,
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe federal/national regulations pertaining to repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.

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Environmental requirements
If a plastic transmitter housing is permanently exposed to certain steam and air mixtures,
this can damage the housing.
‣If you are unsure, please contact your Endress+Hauser Sales Center for clarification.
‣If used in an approval-related area, observe the information on the nameplate.
2.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet
state-of-the-art safety requirements, has been tested, and left the factory in a condition in
which it is safe to operate.
It meets general safety standards and legal requirements. It also complies with the EC
directives listed in the device-specific EC Declaration of Conformity. Endress+Hauser
confirms this by affixing the CE mark to the device.

Identification RID14
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3 Identification
3.1 Device designation
3.1.1 Nameplate
The right device?
Compare the order code on the nameplate of the device to that on the delivery papers.
Made in Germany 2013
D-87484 Nesselwang
Order code: RID14-xxxxxxx
Ser. no.: xxxxxxxxxxx
Ext. ord. cd.: xxxxxxxxxxxxxxxxxx
9 - 32 V
Ta = -40 ...+80°C
FW: XX.XX.XX DevRev: X
4
IP67 NEMA4X
Type 4X
RID14
1
2
3
4
5
6
A0021495
 1 Nameplate of the field indicator (example)
1 Designation, order code and serial number of the device
2 Power supply
3 Ambient temperature range
4 Firmware version and device revision
5 Degree of protection and type of approval
6 Approvals
3.2 Scope of delivery
The scope of delivery of the field indicator comprises:
• Field indicator
• Brief Operating Instructions as hard copy
• ATEX - safety instructions for using a device approved for hazardous areas, optional
• Optional accessories (e.g. pipe mounting bracket), see 'Accessories' section.
3.3 Certificates and approvals
CE mark, Declaration of Conformity
The device is designed in accordance with good engineering practice to meet state-of-
theart safety requirements, has been tested, and left the factory in a condition in which it
is safe to operate.
The device complies with the standards EN 61 010-1 "Protection Measures for Electrical
Equipment for Measurement, Control, Regulation and Laboratory Procedures" and with the
EMC requirements of IEC/EN 61326.
The device described in these Operating Instructions therefore complies with the statutory
requirements of the EU Directives. The manufacturer confirms that the device has been
successfully tested by applying the CE mark.

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The field indicator has successfully passed the PROFIBUS PA physical layer test. As a
"nonactive" bus user it does interfere with Profibus data transfer.
Recognized component as per UL 3111-1.
CSA General Purpose.

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4 Installation
4.1 Incoming acceptance, transport, storage
The permitted ambient and storage conditions must be observed. The precise
specifications can be found in Section "Technical data".
4.1.1 Incoming acceptance
On receipt of the goods, check the following points:
• Are the packaging or contents damaged?
• Is anything missing from the delivery? Compare the scope of delivery with the
information you specified in the order. See also section "Scope of delivery" →  8.
4.1.2 Transportation and storage
Note the following points:
• Pack the device so that is protected against impact for storage and transportation. The
original packaging provides optimum protection.
• The permitted storage temperature range is –40 to +80 °C (–40 to +176 °F); it is possible
to store the device in the limit temperature ranges for a limited period (maximum 48
hours).
4.2 Installation conditions
The process indicator is designed to be used in the field.
The orientation is determined by the readability of the display.
Operational temperature range:
–40 to +80 °C (–40 to +176 °F)
NOTICE
Shorter display operating life at higher temperatures
‣Where possible do not operate the device in the higher temperature range.
The display can react slowly at temperatures < –20 °C (–4 °F).
The readability of the display is no longer guaranteed at temperatures <
–30 °C (–22 °F).
4.2.1 Dimensions
132 (5.2)
135 (5.3)
112 (4.4)
166 (6.5)
106 (4.2) 121 (4.8)
121 (4.8)
!6.4
(0.25)
A0011152
 2 Dimension of the filed indicator in mm (in)

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4.2.2 Installation location
Information on conditions that must be present at the installation location to mount the
device correctly can be found in Section 'Technical data'. These include the ambient
temperature, degree of protection, climate class etc.
4.3 Installation instructions
The device can be mounted directly on the wall →  11. A mounting bracket is available
for mounting on a pipe →  4,  12.
The backlit display can be mounted in 4 different positions →  11.
4.3.1 Turning the display
90°
90° 90°
Pos. 2 Pos. 3 Pos. 4
Pos. 1
2
3
1
4
A0023724
 3 Field indicator, 4 display positions, can be fitted in 90° stages
The display unit can be turned in 90 ° stages.
1. First remove the cover clamp (1) and the housing cover (2).
2. Then disconnect the display (3) from the electronics unit (4).
3. Turn the display to the desired position and then fit it onto the electronics unit.
4.3.2 Mounting directly on the wall
Proceed as follows to mount the device directly on the wall:
1. Drill 2 holes
2. Fit the device on the wall with 2 screws (⌀5 mm (0.2 in)).
4.3.3 Pipe mounting
The mounting bracket is suitable for pipes with a diameter between 1.5" to 3.3".
The additional mounting plate must be used for pipes with a diameter between 1.5" to 2.2".
The mounting plate is not needed for pipes with a diameter between 2.2" to 3.3".
Proceed as follows to mount the device on a pipe:

Installation RID14
12 Endress+Hauser
1
2
3
1.
2.
3.
A0011258
 4 Mounting the field indicator on a pipe with the mounting bracket for pipe diameters 1.5 to 2.2"
1 Mounting plate
2 Mounting bracket
3 2 M6 nuts
4.4 Post-installation check
After installing the device, always run the following final checks:
Device condition and specifications Notes
Is the device damaged? Visual inspection
Is the seal undamaged? Visual inspection
Is the device securely fastened to the wall or the mounting plate? -
Is the front cover fixed tightly? -
Does the device correspond to the measuring point specifications, e.g. ambient
temperature range etc.?
See 'Technical data' section

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5 Wiring
LWARNING
Danger of explosion if unit is connected incorrectly in hazardous area
‣When connecting Ex-approved devices please take special note of the instructions and
connection schematics in the Ex-specific supplement to these Operating Instructions. If
you have any questions, please do not hesitate to contact your E+H representative.
NOTICE
Electronics can be destroyed if unit is connected incorrectly
‣Switch off power supply before installing or connecting the device. Failure to observe
this may result in destruction of parts of the electronics.
‣The post connector is only used to connect the display. If other devices are connected,
this can result in the destruction of parts of the electronics.
Devices can be connected to the PROFIBUS® PA in two ways:
• Via a conventional cable gland
• Via a fieldbus connector (optional, available as an accessory)
5.1 Connecting the cable to the field indicator
For wiring a field indicator, proceed as follows:
1.
2.
3. 6.
5.
4.
5.
A0012568
 5 Opening the housing of the field indicator
1. Open the cable gland, or remove the cable gland to use a fieldbus connector (optional
accessory).
2. Remove the cover clamp.
3. Remove the housing cover.
4. Remove the display.
5. Remove the screws from the electronics unit.
6. Remove the electronics unit.
7. Feed the cable through the cable entry, or screw the fieldbus connector into the
housing.
8. Connect the cable →  6,  14
9. Installation is the reverse of the removal procedure.

Wiring RID14
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5.1.1 Quick wiring guide
A0012751
ESD - electrostatic discharge
Protect the terminals from electrostatic discharge. Failure to observe this may result in destruction or
malfunction of parts of the electronics.
PROFIBUS PA
®
-
+
A0021496
 6 Terminal assignment
Terminal Terminal assignment
+ PROFIBUS® PA connection (+)
- PROFIBUS® PA connection (-)
5.2 Connection to PROFIBUS® PA
Devices can be connected to the PROFIBUS® PA in two ways:
• Via a conventional cable gland
• Via a fieldbus connector (optional, available as an accessory)
NOTICE
The device and fieldbus cable can be damaged by electrical voltage
‣Switch off power supply before installing or connecting the device.
‣It is recommended to ground the unit via one of the grounding screws.
‣If the shield of the fieldbus cable is grounded at more than one point in systems that do
not have additional potential equalization, mains frequency equalizing currents can
occur that damage the cable or shield. In such cases the shielding of the fieldbus cable
is to be grounded on one side only, i.e. it must not be connected to the ground terminal
of the housing. The shield that is not connected should be insulated!
It is not advisable to loop the fieldbus via conventional cable glands. If you want to
replace just one measuring device at a later date, you will have to interrupt bus
communication.
5.2.1 Cable gland or cable entry
Please also observe the general procedure →  13

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A
C
D
B
A0012571
 7 Connection to the PROFIBUS® PA fieldbus cable
A Terminals - fieldbus communication and power supply
B Internal ground terminal
C External ground terminal
D Shielded fieldbus cable
• The terminals for the fieldbus connection (1+ and 2-) are not polarity sensitive.
• Conductor cross-section:
Max. 2.5 mm2 (14 AWG)
• Always use a shielded cable for the connection.
5.2.2 Fieldbus connector
Optionally, a fieldbus connector can be installed in the field housing instead of a cable
gland. Fieldbus connectors can be ordered as an accessory from Endress+Hauser (see
Section "Accessories").
The PROFIBUS® PA connection technology allows measuring devices to be connected to
the fieldbus via standardized mechanical connections such as T-boxes, junction box
modules etc.
This connection technology using pre-fabricated junction box modules and plug-in
connectors offers considerable advantages over conventional wiring systems:
• Field devices can be removed, replaced or added at any time during normal operation.
Communication is not interrupted.
• Installation and maintenance are considerably easier.
• Existing cable infrastructures can be used and extended immediately, e.g. when creating
new star distributor systems using 4-channel or 8-channel distribution modules.
Shielding the supply line/T-box
Always use cable glands with good EMC properties, where possible with wrapround cable
shielding (Iris spring). This requires minimum differences in potential, and possibly
potential equalization.
• The shielding of the PA cable may not be interrupted.
• The shielding connection must always be kept as short as possible.
Ideally cable glands with Iris springs should be used to connect the shield. The Iris spring,
which is located inside the gland, connects the shield to the T-box housing. The shielding
braid is located under the Iris spring.
When the armored thread is screwed tight, the Iris spring is pressed against the shield,
thereby establishing a conductive connection between the shield and the metal housing.
A junction box or a plug-in connection must be considered part of the shielding (Faraday
shield). This applies in particular to remote boxes if such boxes are connected to a
PROFIBUS® PA device via a plug-in cable. In such cases, you must use a metal connector

Wiring RID14
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where the cable shielding is connected to the connector housing (e.g. pre-terminated
cables).
A
B
4
1
2
C3
5
M20x1.5 /
NPT 1/2”
SW/AF 26
D
A0021497
 8 Connectors for connection to the PROFIBUS® PA fieldbus
Pin assignment / color codes
AFieldbus connector D 7/8" connector D M12 connector
BField indicator 1 Brown wire: PA+ (terminal 1) 1 Gray wire: shielding
CConnector on the housing
(male)
2 Green-yellow wire: grounding 2 Brown wire: PA+ (terminal 1)
3 Blue wire: PA- (terminal 2) 3 Blue wire: PA- (terminal 2)
4 Gray wire: shielding 4 Green-yellow wire: grounding
5 Positioning key 5 Positioning key
Technical data for connector:
• IP 67 degree of protection (NEMA 4x)
• Ambient temperature range: –40 to +105 °C (–40 to +221 °F)
5.3 PROFIBUS® PA cable specifications
5.3.1 Cable type
Twin-core cables are generally advisable for connecting the device to the fieldbus.
Following IEC 61158-2 (MBP), four cable types (A, B, C, D) can be used for FOUNDATION
Fieldbus™, only two of which (cable types A and B) are shielded.
• Cable types A or B are particularly preferable for new installations. Only these types have
cable shielding that guarantees adequate protection from electromagnetic interference
and thus the most reliable data transfer. In the case of cable type B, several fieldbuses
(same degree of protection) may be operated in one cable. No other circuits are
permissible in the same cable.
• Practical experience has shown that cable types C and D should not be used due to the
lack of shielding, since the freedom from interference frequently does not meet the
requirements described in the standard.

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The electrical data of the fieldbus cable have not been specified but determine important
characteristics of the design of the fieldbus, such as distances bridged, number of users,
electromagnetic compatibility, etc.
Type A Type B
Cable structure Twisted pair of cores, shielded Individual or multiple pairs of
twisted cores, complete shield
Wire cross-section 0.8 mm2 (18 in2) 0.32 mm2 (22 in2)
Loop resistance (direct current) 44 Ω/km 112 Ω/km
Characteristic impedance at 31.25 kHz 100 Ω ±20 % 100 Ω ±30 %
Attenuation constant at 39 kHz 3 dB/km 5 dB/km
Capacitive asymmetry 2 nF/km 2 nF/km
Envelope delay distortion (7.9 to 39 kHz) 1.7 mS/km *)
Shield coverage 90 % *)
Max. cable length (incl. spurs > 1 m 1 900 m (6 233 ft) 1 200 m (3 937 ft)
*) not specified
Suitable fieldbus cables (type A) from various manufacturers for non-hazardous areas are
listed below:
• Siemens: 6XV1 830-5BH10
• Belden: 3076F
• Kerpen: CeL-PE/OSCR/PVC/FRLA FB-02YS(ST)YFL
5.3.2 Maximum overall cable length
The maximum network expansion depends on the type of protection and the cable
specifications. The overall cable length combines the length of the main cable and the
length of all spurs (>1 m/3.28 ft). Please note the following:
• The maximum permissible overall cable length depends on the cable type used.
• If repeaters are used, the maximum cable length is doubled. A maximum of three
repeaters are permitted between the user and master.
5.3.3 Maximum spur length
The line between the distribution box and field device is described as a spur. In the case of
non-Ex applications, the max. length of a spur depends on the number of spurs (> 1 m
(3.28 ft)):
Number of spurs 1 to 12 13 to 14 15 to 18 19 to 24 25 to 32
Max. length per spur 120 m (393 ft) 90 m (295 ft) 60 m (196 ft) 30 m (98 ft) 1 m (3.28 ft)
5.3.4 Number of field devices
In systems that meet FISCO with Ex ia type of protection, the line length is limited to max.
1 000 m (3 280 ft). A maximum of 32 users per segment in non-Ex areas or a maximum of
10 users in an Ex-area (Ex ia IIC) is possible. The actual number of users must be
determined during the planning stage.

Wiring RID14
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5.3.5 Shielding and grounding
NOTICE
Equalizing current can damage the bus cable or bus shield
‣If the shielding of the cable is grounded at more than one point in systems without
potential matching, mains frequency equalizing currents can occur that damage the bus
cable or the bus shield or have a serious effect on signal transmission. In such cases the
shielding of the fieldbus cable is to be grounded on one side only, i.e. it must not be
connected to the ground terminal of the housing. The shield that is not connected
should be insulated!
Optimum electromagnetic compatibility (EMC) of the fieldbus system can only be
guaranteed if the system components and, in particular, the lines are shielded and the
shield forms as complete a cover as possible. A shield coverage of 90% is ideal.
• To ensure an optimum EMC protective effect, connect the shield as often as possible to
the reference ground.
• For reasons of explosion protection, you should refrain from grounding however.
To comply with both requirements, the fieldbus system allows three different types of
shielding:
• Shielding at both ends
• Shielding at one end on the feed side with capacitance termination at the field device
• Shielding at one end on the feed side
Experience shows that the best results with regard to EMC are achieved in most cases in
installations with shielding at one end. Appropriate measures with regard to input wiring
must be taken to allow unrestricted operation when EMC interference is present. These
measures have been taken into account for this device. Operation in the event of
disturbance variables as per NAMUR NE21 is possible with shielding at one end.
Where applicable, national installation regulations and guidelines must be observed
during the installation!
one point of the shielding is connected directly with the reference ground. In systems
without potential equalization, therefore, cable shielding of fieldbus systems should only
be grounded on one side, for example at the fieldbus supply unit or at safety barriers.
12 3
4
5
0
10
20
30
40 50
.-
A0012570
 9 Shielding and grounding of the fieldbus cable shield at one end
1 Supply unit
2 Distribution box (T-box)
3 Bus terminator
4 Grounding point for fieldbus cable shield
5 Optional grounding of the field device, isolated from cable shielding.
5.3.6 Bus termination
The start and end of each fieldbus segment must always be terminated by a bus
terminator. With various junction boxes (non-Ex), the bus termination can be activated via

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a switch. If this is not the case, a separate bus terminator must be installed. Please also
note the following:
• In the case of a branched bus segment, the measuring device furthest from the segment
coupler represents the end of the bus.
• If the fieldbus is extended with a repeater then the extension must also be terminated at
both ends.
5.3.7 Further information
General information and additional wiring instructions are provided in the manual
"Guidelines for planning and commissioning, PROFIBUS ® DP/PA, field communication".
Source: www.endress.com/download → Advanced → "Documentation Code" BA00034S.
5.4 Degree of protection
The devices fulfill the requirements for IP 67 degree of protection. Compliance with the
following points is mandatory to ensure IP 67 protection is guaranteed after installation or
after service work:
• The housing seal must be clean and undamaged when it is inserted into the groove. The
seal should be cleaned, dried or replaced.
• The connecting cables must be of the specified outer diameter (e.g. M16 x 1.5, cable
diameter 5 to 10 mm (0.2 to 0.39 in)).
• Replace all unused cable entries with dummy plugs.
• The cable entry seal may not be removed from the cable entry.
• The housing cover and cable entry/entries must be closed securely.
• Install the device in such a way that the cable entries point downwards.
5.5 Post-connection check
After the electrical installation of the device, always run the following final checks:
Device condition and specifications Notes
Are cables or the device damaged (visual inspection)? -
Electrical connection Notes
Does the supply voltage match the specifications on the nameplate? 9 to 32 VDC
Do the cables used comply with the specifications? Fieldbus cable, see
specification
Do the cables have adequate strain relief? -
Are the power supply and signal cables correctly connected? →  14
Are all the screw terminals well tightened and have the connections of the spring
terminals been checked?
-
Are all the cable entries installed, tightened and sealed? Cable run with "water
trap"?
-
Are all housing covers installed and firmly tightened? -
Are all the connection components (T-box, junction boxes, connectors, etc.)
correctly connected to one another?
-
Has each fieldbus segment been terminated by a bus terminator at both ends? -
Has the max. length of the fieldbus cable, as defined in the fieldbus specifications,
been observed?
see cable specifications
→  16

Wiring RID14
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Electrical connection Notes
Has the max. length of the spurs, as defined in the fieldbus specifications, been
observed?
Is the fieldbus cable completely shielded (90%) and correctly grounded?