Endress+Hauser Tank Side Monitor NRF590 Manual

TI00402F/00/EN/13.10
71127758
Technical Information
Tank Side Monitor NRF590
Inventory Control
Field device for tank sensor operation and monitoring and for
integration into inventory control systems
Software Version 02.04
Application
The Tank Side Monitor NRF590 is a sensor integration
and monitoring unit for bulk storage tank gauging
applications.
It can be used with Micropilot radar or Proservo level
gauges and can be combined with other HART
compatible devices.
The Tank Side Monitor offers the following functions:
• intrinsically safe (i.s.) power supply of the connected
devices
• parametrization of the connected devices
• display of the measured values
• tank calculations for accurate correction of the tank
distortions
Features and benefits
• I.s. power supply and communication for Micropilot
and Levelflex level radars
• Connects up to 6 HART devices via i.s. 2 wire, for
example Prothermo for average temperature
measurement and Cerabar/Deltabar for HTMS
density applications
• Backlit graphical LCD display; operation via 3 optical
keys (touch control)
• User-friendly operating menu (multi-lingual)
• Interfaces to the tank inventory system Tankvision
• Provides communication to PLC, DCS and SCADA
systems
• Various industry standard communication protocols,
including
–Sakura V1
–EIA-485 Modbus
–Whessoematic WM550
–BPM (compatible with Enraf systems)
• Approved for use in explosion hazardous areas
• Weights & Measure-approved for use in custody
transfer applications

2Endress+Hauser
Table of Contents
Function and system design. . . . . . . . . . . . . . . . . . . . . 3
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Integration (typical example) . . . . . . . . . . . . . . . . . . . . . . . 3
HART interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power supply for HART instruments . . . . . . . . . . . . . . . . . . . . . . . 4
Operation of HART instruments . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Typical Tank calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Corrections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Overfill protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Inputs and outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Non IS inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
IS inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fieldbus Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Values transmitted by the Field Protocols . . . . . . . . . . . . . . . . . . 10
Technical data of the non-IS inputs and outputs . . . . . . . . . . . . . 11
Technical Data of the IS inputs and outputs . . . . . . . . . . . . . . . . 12
Auxiliary energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
AC supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DC supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical connection - non-i.s. terminals. . . . . . . . . . 14
Terminal assignment of the field protocol/host side . . . . . . . . . . . 14
Connection of the field protocols . . . . . . . . . . . . . . . . . . . . . . . . 15
Grounding of the fieldbus screen . . . . . . . . . . . . . . . . . . . . . . . . 15
Connection of the auxiliary energy . . . . . . . . . . . . . . . . . . . . . . . 15
Connection of the non-i.s.
4 to 20 mA analogue input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Connection of the non-i.s.
4 to 20 mA analogue output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Connection of the discrete in and output . . . . . . . . . . . . . . . . . . 16
Electrical connection - i.s. terminals . . . . . . . . . . . . . 17
Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connection of HART instruments . . . . . . . . . . . . . . . . . . . . . . . . 18
Spot RTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Performance characteristics. . . . . . . . . . . . . . . . . . . . 19
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Scan time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . 20
Wall mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mounting on vertical rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mounting on horizontal rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Ingress protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . 21
Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Mechanical construction . . . . . . . . . . . . . . . . . . . . . . 22
Design, dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Cable entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Human interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Display and operating elements . . . . . . . . . . . . . . . . . . . . . . . . . 23
Operating concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Remote operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Certificates and Approvals . . . . . . . . . . . . . . . . . . . . . 26
CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Ex approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Custody transfer approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
External standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . 27
Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . 28
Tank Side Monitor NRF590 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Discrete I/O modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Rail mounting kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Supplementary Documentation . . . . . . . . . . . . . . . . . 34
Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Control Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Endress+Hauser 3
Function and system design
Application The Tank Side Monitor NRF590 is a field device for the integration of tank sensors into tank inventory systems.
It is used in tank farms, terminals and refineries.
Especially, it can be used in connection with Micropilot M level radars (for inventory control) and Micropilot S
high accuracy level radars (for custody transfer applications).
Operating principle The Tank Side Monitor is typically installed at the bottom of the tank and allows to access all connected tank
sensors. Typical process values measured by the sensors are:
• level
• temperature (point and/or average)
• water level (measured by capacitive probe)
• hydrostatic pressure (for hydrostatic tank gauging, "HTG", or hybrid tank measurements, "HTMS")
• secondary level value (for critical applications)
The Tank Side Monitor collects the measured values and performs several configurable tank calculations.
All measured and calculated values can be displayed at the on-site display. Via a field communication protocol,
the Tank Side Monitor can transfer the values to an inventory control system.
System Integration
(typical example)
L00-NRF590-14-00-08-en-016
NXA820
Tank Side
Monitor
Deltabar
PMD
Micropilot
FMR
Browser
NXA820
Tank Scanner
Switch
HART (i.s.) multidrop
2-wire or 4-wire
Power
Prothermo
NMT 539
optionally with
water bottom
probe
HART (i.s.)
Fieldbus
protocoll

4Endress+Hauser
HART interface
Power supply for HART
instruments
The Tank Side Monitor provides intrinsically safe power for 2-wire tank sensors.
It also can provide intrinsically safe power for the 4-wire instrument Micropilot S.
Operation of HART
instruments
For the following instruments, the operating menu can be accessed on the display of the Tank Side Monitor:
• Micropilot M: FMR230/231/240/244/245
• Micropilot S: FMR530/531/532/533/540
• Prothermo: NMT532/535/536/537/538
• Prothermo: NMT539 (including Water Bottom Probe)
• Cerabar M: PMC/PMP4x
• Cerabar S: PMC/PMP7x
• Cerabar: PCM/PMC73x/63x
• Deltabar: PMD/FMD23x/63x
• Deltabar S: PMD/FMD7x
Any other HART instrument can be operated via the Generic HART menu (allowing all 4 universal HART
values to be accessed).
IS (intrinsically safe) HART Master for measuring device connection
Non-IS
(if selected by order code)
user settable:
•HARTMaster
• HART Slave (active 4-20 mA when address is "0")

Endress+Hauser 5
Typical Tank calculations
Setup preset Installation example Sensors measured/
calculated values
required parameters
Direct level measurement
Level only
L00-NRF590-14-00-08-yy-002
• Level sensor • level • Tank Ref Height
Level + Temperature
L00-NRF590-14-00-08-yy-003
• Level sensor
• Temperature sensor
(RTD or
HART device;
optionally with bottm
water probe)
• level
• temperature
Hybrid Tank Measuring System (HTMS)
HTMS + P1
L00-NRF590-14-00-08-yy-004
• Level sensor
• Pressure sensor
(P1, bottom)
• level
• density of the measured
medium (calculated)
•TankRefHeight
• P1 Position
•MinHTMS
(minimum level at which HTMS
measurement is possible; should be
slightly above the position of the P1
sensor)
•localgravity
• vapour density
• air density
• P3 Position (only for the "HTMS +
P1,3" mode)
HTMS + P1,3
Note!
This mode should be
used in non-
atmospheric tanks
(e.g. pressurised tanks)
L00-NRF590-14-00-08-yy-005
• Level sensor
• Pressure sensor
(P1, bottom)
• Pressure sensor
(P3, top)
Micropilot
Tank Side
Monitor
Tank Ref Height
Prothermo Micropilot
Tank Side
Monitor
P1
Tank Side
Monitor
Micropilot
Tank Ref Height
P1 Position
P1
P3
Micropilot
Tank Side
Monitor
P3 Position

6Endress+Hauser
Setup preset Installation example Sensors measured/
calculated values
required parameters
Hydrostatic Tank Gauging (HTG)
HTG P1
L00-NRF590-14-00-08-yy-006
• Pressure sensor
(P1, bottom)
• level (calculated) • Tank Ref Height
• local gravity
• density of the measured medium
• Min HTG Level
(minimum level at which HTG
measurement is possible; should be
slightly above the position of the P1
sensor)
• P1 Position
• P3 Position (only for the "HTG P1,3"
mode)
HTG P1,3
Note!
This mode should be
used in non-
atmospheric tanks
(e.g. pressurised tanks)
L00-NRF590-14-00-08-yy-009
• Pressure sensor
(P1, bottom)
• Pressure sensor
(P3, top)
HTG P1,2
L00-NRF590-14-00-08-yy-007
• Pressure sensor
(P1, bottom)
• Pressure sensor
(P2, middle)
• level (calculated)
• density of the measured
medium (calculated)
•TankRefHeight
• local gravity
• Min HTG Level
(minimum level at which HTG
measurement is possible; should be
slightly above the position of the P2
sensor)
• P1 Position
• P1-P2-Distance
• P3 Position (only for the "HTG
P1,2,3" mode)
HTG P1,2,3
Note!
This mode should be
used in non-
atmospheric tanks
(e.g. pressurised tanks)
L00-NRF590-14-00-08-yy-008
• Pressure sensor
(P1, bottom)
• Pressure sensor
(P2, middle)
• Pressure sensor
(P3, top)
P1
Tank Side
Monitor
P1 Position
P1
Tank Side
Monitor
P1 Position
P3
P3 Position
P1
Tank Side
Monitor
P1 Position
P2
P1-P2 Distance
P1
Tank Side
Monitor
P1 Position
P2
P1-P2 Distance
P3
P3 Position

Endress+Hauser 7
Corrections The Tank Side Monitor can automatically calculate the following corrections:
• Correction for the Hydrostatic Tank Deformation (HyTD)
• Temperature Correction for Thermal Expansion of the Tank Shell (CTSh)
Overfill protection The NRF590 can be configured and used as part of an overfill protection system in comjunction with the
approved WHG operating mode of the Endress+Hauser FMR53x/54x radar devices (as described in the TÜV
test certificate for the FMR53x/54x WHG operating mode).
Overview
• Level input from FMR53x/54x via HART communication
• Discrete output via DO #A and/or DO #B (in conjunction with the AL1 alarm function block
• Analogue 4 to 20mA output via AO
!Note!
AO #2 and DO #C (if available) cannot be used for overfill protection

8Endress+Hauser
Inputs and outputs
L00-NRF590-04-08-08-en-003
Non IS inputs and outputs
IS inputs and outputs
4...20 mA
4...20 mA 4...20 mA4...20 mA
Non-i.s.
terminals
Ex d
Power AC/DC
FMR NMT Pressure
transmitter
i.s.
terminals
Ex ia
V1
Mark/Space
L&J
Modbus
WM550
Enraf BPM
GPE
Analogue In
Analogue In
(option)
HART (up to 24 mA)
Fieldbus
Discrete In 1 Discrete In 2
Discrete In/Out B
(option)
Discrete In/Out A
(option)
Spot RTD
(option)
Analogue Out 2
(option)
Discrete Out C
(option)
Analogue Out 1
with HART
(option)
V1 Modbus WM550 BPM Mark/
Space
L&J
Tankway GPE
Analogue In AI - option1)
1) see pos. 20 option 4 of the product structure; Modbus without in- or output does not provide an Ex d HART bus!
- standard standard standard -
Analogue Out 1 AO standard
+HART
option1
+HART
standard
+HART
standard
+HART
standard
+HART
standard
+HART
standard
+HART
Analogue Out 2 AO#2 standard - standard - - - standard
Discrete In/Out A DI#A
DO#A option, s. pos. 50 of the product structure
Discrete In/Out B DI#B
DO#B option, s. pos. 60 of the product structure
DiscreteOutCDO#Cstandard------
V1 Modbus WM550 BPM Mark/Space L&J Tankway GPE
HART standard standard standard standard standard standard standard
IS RTD option, s. pos. 40 of the product structure
IS Discrete In 1 IS DI#1 standard standard standard standard standard standard standard
IS Discrete In 2 IS DI#2 standard standard standard standard standard standard standard
IS Analogue In IS AI standard standard standard standard standard standard standard

Endress+Hauser 9
Fieldbus Protocols The Tank Side Monitor NRF590 supports all of the following industry standard communication protocols
allowing it to be integrated with existing instrumentation and connect to host computer systems without the
need for additional hardware. These protocols allow for piece-by-piece replacement and upgrading of older
technologies to modern radar solutions.
Sakura V1
V1 protocol provides a standard form of digital communication via a two-wire system. V1 was brought to the
market by Sakura Endress and meets the demands of the Japanese market.
The Tank Side Monitor implementation of the V1 slave protocol supports various old and new V1 protocols:
•V1(newV1)
• MDP (old V1)
• BBB (old V1)
• MIC+232 (old V1) (in preparation)
EIA-485 (RS485) Modbus
In Modbus, the flow of data between two devices uses a master/slave protocol. The NRF590 acts as a Modbus
slave and runs on the EIA-485 (RS) version of the MODBUS communications board. Modbus provides Varec
MFT parameter mapping for easier setup in retrofit applications. It provides direct connection to PLC and DCS
systems.
Whessoematic WM550
The WM550 protocol provides a standard form of digital communication via dual current loops. WM550 was
developed by Endress+Hauser (formerly Whessoe) to facilitate communications to transmitters installed on
mechanical float and tape gauges. It is a two-wire system and the only protocol with a redundant loop.
BPM
The Bi-Phase Mark (BPM) protocol provides compatibility to Enraf systems by emulating the Enraf GPU-BPM
protocol. The NRF590 is fully compatible to ENRAF (802, 812), 811, 854 and 954 series servo gauges, 813
MGT (mechanical gauge transmitter), 872, 873 and 973 series Radar gauges, 874 AIM (Analogue Input
Module) and the 875 VCU (Valve Command Unit).
Mark/Space
The Mark/Space protocol provides compatibility with Varec transmitters using a standard form of digital
communication via a voltage mode bus. Mark/Space was developed to facilitate communication to transmitters
installed on mechanical float and tape gauges. It supports product level, temperature and discrete inputs.
L&J Tankway
L&J Tankway protocol provides a standard form of digital communication via a voltage mode bus. Tankway
supports product level, temperature and discrete inputs.
GPE
GPE protocol provides a standard form of digital communication via a current loop.
It is compatible with L&J and GPE mechanical float and tape and servo instrumentation.

10 Endress+Hauser
Values transmitted by the
Field Protocols
The following values can be transmitted by the communication protocols:
Tank Value Symbol V1 - old V1 - new Modbus WM550 BPM Mark/
Space
L&J
Tankway
Basic
L&J
Tankway
Servo
GPE
Level L yes yes yes yes yes yes yes yes yes
Temperature (Product) TPyes yes yes yes yes yes yes yes yes
Observed Density Dobs - yes yes yes yes - - yes -
Water Level LW- yes yes yes yes - - yes -
Pressure 1 (Bottom) P1- yes yes yes1yes - - - -
Pressure 2 (Middle) P2- yes yes yes1) -----
Pressure 3 (Top) P3- yes yes yes yes - - - -
Measured Level LM- - yes yes1-----
Level Correction LC- - yes yes1-----
Percentage Level L%- - yes yes - - - - -
Gasphase Temperature TV- yes yes yes1yes - - - -
Air Temperature TA- - yes yes1yes - - - -
Level Flow Rate
(Rate of change of level)
- - yes yes1-----
Volumetric Flow Rate - - yes yes1-----
General Purpose Value 1 GP1- yes yes yes1-----
General Purpose Value 2 GP2- yes yes yes1-----
General Purpose Value 3 GP3- - yes yes1-----
General Purpose Value 4 GP4- - yes yes1-----
Multi-Element
Temperatures
T(1) to T(16) - yes yes T(1) to T(15) -----
Alarm/Discrete Values yes2) yes2yes yes yes3) yes4) yes5) yes5-
Discrete Output Control - - yes - - - - - 1
Additional - 4-20mA6) yes Level % - - Temp7) -4-20mA
6
Protocol Documentation KA00246F KA00246F KA00245F KA00247F KA00248F KA00249F KA00250F KA00250F KA00251F
1) Only accessible through WM550 extended tasks (51&52); not available on older control room systems.
2) The protocol allows 2 alarm and 4 general purpose flags which can be connected to any alarm or discrete input.
3) Level L & H alarm, 4 alarms and 2 general purpose flags which can be connected to any alarm or discrete input.
4) The protocol allows 2 digital alarm values which can be connected to any alarm or discrete input.
5) The protocol allows 2 digital values which can be connected to any alarm or discrete input.
6) One additional value "4-20mA" which can be connected to any value, however range of value sent is limited (see KA00246F/00/EN).
7) One additional value "Temp2" which can be connected to any value, however the range of value sent is limited (see KA00250F/00/EN).

Endress+Hauser 11
Technical data of the non-IS
inputs and outputs
Analogue 4 to 20 mA input (option, s. pos. 20 of the product structure)
Analogue 4 to 20 mA outputs
Discrete inputs/outputs A and B
The Tank Side Monitor can be equipped with 1 or 2 discrete I/O modules.
Available types: see position 50 and 60 of Product Structure or chapter "Accessories".
Discrete output C (for V1 protocol)
Internal load (to ground) 110 Ω
Measuring range 0 to 26 mA
Accuracy ±15 μA (after linearisation and calibration)
Output current 3 to 24 mA
Output voltage U = 24 V - ILOAD 400 Ω
Output load max. 500 Ω
Accuracy ±15 μA (after linearisation and calibration)
HART options1)
1) The second analogue output (available for V1, WM550 and GPE) has no HART option.
• Slave, address # 0:
4 to 20 mA active
• Slave, address #1 - #15:
fixed current (user selectable)
•Master:
max. current (≤24 mA) selectable by user;
typically 6 HART instruments (each 4 mA) can be connected2)
2) Start-up current of the HART instruments has to be taken into account
Load voltage 3 to 100 V
Load current max. 500 mA
Type of contact mechanical latching relay
Isolation voltage 1500 V
Approvals UL, CSA

12 Endress+Hauser
Technical Data of the IS inputs
and outputs
HART input loop
Spot RTD input (option, s. pos. 40 of the product structure)
IS Analogue 4 to 20 mA input (option, s. pos. 70 of the product structure)
Discrete inputs (option, s. pos. 70 of the product structure)
Source voltage U = 25 V - ILoad x 333 Ω(typically)
total Imax Start-up currents of all connected HART devices may not exceed a total of 27 mA
connectable sensors depending on current consumption (including start-up current)
Measuring range 10...600 Ω
Excitation current typ. 400 μA, max. 2000 μA
Type of Sensor Nominal value Tempmin Tempmax Accuracy1)
1) Accuracy of converter, may be influenced by element accuracy
Pt100 (385) IEC751
Pt100 (389)
Pt100 (392) IPTS-68
100 Ω@ 0 °C (≈32 °F) -200 °C (≈-330 °F) +600 °C (≈+1110 °F) ±0.1 °C (≈± 0.2 °F)
Cu90 (4274) 100 Ω@ 25 °C (≈77 °F)
[90 Ω@ 0 °C (≈32 °F)] -100 °C (≈-150 °F) +250 °C (≈+480 °F) ±0.1 °C (≈± 0.2 °F)
Ni120 (672) 120 Ω@ 0 °C (≈32 °F) -60 °C (≈-75 °F) +180 °C (≈+350 °F) ±0.1 °C (≈± 0.2 °F)
Ni100 (618) DIN
43760 100 Ω@ 0 °C (≈32 °F) -60 °C (≈-75 °F) +180 °C (≈+350 °F) ±0.1 °C (≈± 0.2 °F)
Source voltage U = 25 V - ILoad x 333 Ω(typically)
Internal load (to ground) 100 Ω
Measuring range 0 to 26 mA
Accuracy ±15 μA (after linearisation and calibration)
Usage Source for Discrete Inputs / Source for 4 to 20 mA loop device
Active voltage ("closed circuit") min. 9 V (default)
In-active voltage ("open circuit") max. 7 V (default)
Active high current 4 mA
Switching hysteresis 2 V

Endress+Hauser 13
Auxiliary energy
AC supply 55 to 264 VAC; insensitive to polarity / CSA approved: 55 to 250 VAC
DC supply 18 to 55 VAC/DC
Power consumption • 370 mA at 24 V DC
• 200 mA at 48 V DC
• 75 mA at 125 V AC
• 45 mA at 220 V AC
Fuse Internal (on primary power)
Grounding The NRF590 must be grounded to the tank potential before communication and power connections are made.
The connections (A ≥4mm2) from each outer ground plug of the NRF590 to the tank ground must be made
before any other wiring connections are made. All grounding must be compliant with local and company
regulations and checked before the equipment is commissioned.
L00-NRF590-04-08-08-en-004
A > 4 mm2
Tank Ground

14 Endress+Hauser
Electrical connection - non-i.s. terminals
Terminal assignment of the
field protocol/host side
L00-NRF590-04-08-08-en-002
04A1/+
05 A2/-
06 B1/+
07 B2/-
01 L/+
02 N/-
08 C1
09 C2
10C3
11 C4
12C5
13C6
14 C7
15C8
01 L/+
04A1/+
07 B2/-
08 C1
10C3
12C5
14 C7
02 N/-
05 A2/-
06 B1/+
00 S
09 C2
11 C4
13C6
15C8
00 S
Power
Digital I/O A
Digital I/O B
Cablescreen
Fieldprotocol
and
Analog I/O
(for details
see table)
Power
Digital I/O A
Digital I/O B
Cablescreen
Fieldprotocol
and
Analog I/O
(for details
see table)
For the certificate versions
- Standard (not certified)
- ATEX
- FM
- CSA
For the
certificate versions
- TIIS
Terminal 01
L/+
02
N/-
04
A1/+
05
A2/-
06
B1/+
07
B2/-
00
S
Power supply Discrete I/O - A
+
Discrete I/O - A
-
Discrete I/O - B
+
Discrete I/O - B
-Cable screen
08
C1
09
C2
10
C3
11
C4
12
C5
13
C6
14
C7
15
C8
V1 4 to 20 mA
output1) #2 V1A V1B 0 V10V
4 to 20 mA
output #1
+HART
discrete output
1C
discrete output
2C
EIA-485
Modbus not used2) 485-B 485-A 0 V 0 V1
4 to 20 mA
output3)
+HART
4 to 20 mA
input3+24 V1
Whessoe
WM550
4 to 20 mA
output1#2 Loop 1- Loop 1+ 0 V10V
4 to 20 mA
output #1
+HART
Loop 2- Loop 2+
BPM not used2TT0V0V
1
4 to 20 mA
output
+HART
4 to 20 mA
input +24 V1
Mark/Space V+ Space Mark 0 V (V-) 0 V1
4 to 20 mA
output
+ HART
4 to 20 mA
input +24 V1
L&J Tankway Power Encoder Computer Ground 0 V1
4 to 20 mA
output
+ HART
4 to 20 mA
input +24 V1
GPE 4 to 20 mA
output1#2 Loop 1- Loop 1+ 0 V10V
4 to 20 mA
output #1
+ HART
do not connect do not connect
1) In case an "Ex d" rated 4-wire level gauge version is used, the power supply can be obtained from these terminals (21V ±10%).
2) The internal voltage at this terminal is 0 V, however, shielding and signal common should be connected to terminal 11 or 12.
3) Option, s. pos. 20 of the product structure

Endress+Hauser 15
Connection of the field
protocols
Sakura V1
The V1 protocol provides 2 wire communication allowing up to 10 devices to operate on a loop.
V1 connects to terminals 9-10. Max. distance: 6000 m
EIA-485 Modbus
The NRF590 protocol uses a shielded 3-wire EIA-485 hardware interface to communicate with the modbus
master. EIA-485 is a high speed, differential communications network that allows up to 32 devices to operate
on one network.
• Using one shielded twisted pair of 18 AWG wire, connect the EIA-485 at terminal 9 and 10.
• Termination of the EIA-485 bus at the NRF590 can be set in the operating menu (only enable on end device
in a loop)
• Connect the 3rd wire from the control system signal common (0V) to terminal 11 or 12.
• Max distance: 4000 ft (1300 m)
Whessoematic WM550
The WM550 protocol provides 2 wire, current loop communication and allows up to 16 devices per loop.
For redundancy (safety function) two wire pairs are used. They always transmit the same values.
The WM550-loops connect to terminals 9 - 10 and 14 - 15. Max. distance: 7000 m
BPM
The BPM protocol provides 2 wire communication allowing up to 10 devices to operate on a loop.
BPM connects to terminals 9-10. Max. distance: 10000 m
Mark/Space
For a NRF590 using the Mark/Space field communications option, the following additional wiring connections
must be made:
• Run 2 twisted pairs (one power, one communication) of 18 AWG wire (Mark/Space wires) into the upper
terminal compartment through one of the conduit entries along with the 48 Vdc power wiring.
• Connect the Mark line to terminal 10 and the Space line to terminal 9.
• Connect to power supply at terminals 8 and 11.
L&J Tankway
Including power and ground, L&J is a 4-wire system, allowing 50+ devices to be connected on the
communication bus. L&J connects to terminals 8 through 11.
GPE
The GPE protocol provides 2 wire current loop communication. GPE connects to terminal 9-10.
Grounding of the fieldbus
screen
The screen of the fieldbus cable should be connected to ground at both ends. If this is not possible due to signal
disruption by potential equalisation currents, it is advisable to connect the screen of the fieldbus cable to
terminal "00 S" at the NRF590 and to ground at the other end. The "00S" terminal provides a 500 V capacitor
between the cable screen and tank ground potential.
Connection of the auxiliary
energy
The Tank Side Monitor can be AC or DC supplied, depending on the installed power supply board. The AC
supply needs to be connected to the terminals marked "L/+" (Line) and "N/-" (Neutral), corresponding with
the phase/line and neutral wire. DC supply can be connected to the same terminals, for which it is necessary
to connect the positive (+) to the terminal marked "L/+", and the negative to the terminal marked "N/-".

16 Endress+Hauser
Connection of the non-i.s.
4 to 20 mA analogue input
Depending on the selected fieldbus communication board, a non-i.s. self-powered or loop powered analogue
transmitter can be connected. The analogue signal for the loop powered transmitter can be connected to the
terminals 14 (-) and 15 (+24 V DC). The maximum supply current for the analogue transmitter is limited to
24 mA. The analog signal for a self powered transmitter should be connected to terminals 11 or 12 and 14.
L00-NRF590-04-00-08-en-019
Connection of the non-i.s.
4 to 20 mA analogue output
For all field communication boards except the Modbus Option without analog in/output, a
non-i.s. 4.. .20mA output is available. Via Software settings, this analogue output can be connected to any
parameter in the Tank Side Monitor. The analogue output is available between terminals
13 (+) and 12 (-). From SW 02.01.xx onwards, an additional HART signal is available at terminal 13.
Connection of the discrete in
and output
The Tank Side Monitor can be equipped with up to 2 discrete I/O modules. These modules can be used for
interfacing to non-i.s. discrete in- or outputs. Input and output voltage and current ranges depend on the type
of selected module installed in the relevant I/O slot. Terminals 4 and 5 correspond to discrete I/O slot A,
terminals 6 and 7 correspond to discrete I/O slot B. For details on available I/O modules, →ä30.
L00-NRF590-04-00-08-en-004
Note!
250 V AC is the maximum load that can be connected.
14
+
15
-
11/12
+
14
-
14
passive
+
15
-
11/12
active
+
14
-
+
–
+
–
L
N
L
N
4 5 A
6 7 B
4 5 A
6 7 B
4 5 A
6 7 B
4 5 A
6 7 B
DIGITAL
AC OUTPUT
DIGITAL
DC OUTPUT
DIGITAL
AC INPUT
DIGITAL
DC INPUT
LOAD
LOAD
AC SUPPLY
DC SUPPLY
AC SUPPLY
DC SUPPLY

Endress+Hauser 17
Electrical connection - i.s. terminals
Terminal assignment
L00-NRF590-04-00-08-en-018
Terminal Designation Meaning
16 D+ + RTD drive1)
1) These terminals should be left unconnected if RTD has not been selected in feature 40 of the product structure.
17 S+ + RTD sense1)
18 S- - RTD sense1), 2)
2) For a 3-wire RTD, terminals 18 and 19 should be connected together.
19 D- - RTD drive1), 2)
20 OPT1 Discrete Input 1
21 OPT2 Analog Input 1 (4 to 20 mA)
22 OPT3 Discrete Input 2
23 OPT4 Option +24 V
24 H+ +HART comm.3)
3) These terminals share the same HART signal.
25 H- -HART comm.4)
4) These terminals share the same i.s. 0 V signal.
26 H+ +HART comm.3)
27 H- -HART comm.4)
28 H+ +HART comm.3)
29 H- -HART comm.4)
30 P+ + i.s. power for FMR S-series (terminal 2 of FMR)3)
31 P- - i.s. power for FMR S-series (terminal 1 of FMR)4)
24V
mA
NRF590 - i.s.terminal board
RTD
HART
sensor
Internally
interconnected
as one HART
fieldbus loop
For Micropilot
S-series only!

18 Endress+Hauser
Connection of HART
instruments
Tank sensors
The Tank Side Monitor can interface to a maximum of 6 i.s. HART sensors. All HART sensors are connected
to one HART multi-drop communication loop. In order to keep wiring simple, 3 interconnected terminal pairs
are available. The terminal pairs are marked respectively "H+" and "H-".
Power supply for Micropilot S
For supplying extra i.s. power to the FMR S-series radar, additional power terminals are available, marked as
"P+" and "P-". Although it is possible to use only 3 wires between the S-series radar and the NRF590, by
combining the "P-" and "H-" wires, it is recommended to use a double pair of screened and twisted cable.
Grounding of the cable screen (for Micropilot S)
The screen of the cable connecting the Micropilot S to the Tank Side Monitor should be grounded at the Tank
Side Monitor, not at the Micropilot S.
L00-NRF590-04-08-08-yy-007
Spot RTD
1
1
2
2
3
3
4
4
5
5
RTD
NRF 590 i.s.terminal board
i.s. module wiring
HART
sensor
+
-
-
+
16
17
18
19
D+
S+
S-
D-
20
21
22
23
OPT1
OPT2
OPT3
OPT4
24
25
26
27
+
-
+H
H
-
+
-
+P
H
-
28
29
30
31
For Micropilot
S-series only!
Internally
interconnected
as one HART
fieldbus loop
2
1
4
3
1234
Tank Side Monitor
Micropilot S
L00-NRF590-04-00-08-en-007
A spot RTD can be connected to the NRF590 if the
option is installed. For 4-wire connection, the RTD
must be connected to the 4 available terminals
marked D+, S+, S- and D-. For 3-wire connection,
the RTD should be connected to the same 4
terminals. The terminals D- and S- should be
connected together directly at the NRF590 terminals.
RTD
4 wire
RTD
3 wire

Endress+Hauser 19
Performance characteristics
Accuracy HART sensors
Accuracy of all data from connected HART sensors depends on the type and installation of instruments. The
use of the digital HART protocol prevents accuracy data degradation, as would be the case with analogue
(4 to 20 mA) sensors.
Spot RTD input, analogue inputs, analogue outputs
See "Technical data of the IS inputs and outputs".
Resolution Resolution of all measured data depends on sensor and communication settings. The following settings are
recommended for inventory and custody transfer applications:
For purpose of consistency all internal calculations are performed in SI units.
Scan time HART sensors
The data of connected HART sensors is constantly scanned and updated in the internal data base. The scanning
sequence is based on the priorities of the measurements (level - prio 1, temperature - prio 2, pressure - prio
3,...). Typically, a value change on the HART multidrop loop is displayed after a 2 seconds delay (for priority 1
values).
Spot RTD input
RTD resistance is measured and recalculated at least every second.
Data type Units Inventory control Custody transfer
Level
millimeters 1 mm 1 or 0.1 mm
meters 10 mm 1 or 0.1 mm
feet 0.01 ft 0.01 ft
inches 1" or 0.1" 0.01" or 0.001"
ft-in-16 1/16" 1/16"
Temperature °C 0.1 °C 0.1 °C
°F 0.1 °F 0.1 °F

20 Endress+Hauser
Installation conditions
Wall mounting
L00-NRF590-17-00-06-xx-001
Mounting on vertical rail
L00-NRF590-17-00-06-en-002
Mounting on horizontal rail
L00-NRF590-17-00-06-en-003
100 (3.94)
mm (inch)
ø8.6 (M8)
100 (3.94)
mm (inch)
ø90 (ø3.5)
maximum
Rail mounting kit
(Order No.:
52013134)Grounding
connections
mm (inch)
Rail mounting kit
(Oder No.: 52013134)
ø90 (ø3.5)
maximum