Endress+Hauser Tank Side Monitor NRF590 User manual

Products Solutions Services
BA00256F/00/EN/15.15
71307017
Valid as of software version:
V02.04.zz
Operating Instructions
Tank Side Monitor NRF590
Inventory Control
Software Version 02.04.zz

Notes on Software Version SW 02.xx
2Endress+Hauser
Notes on Software Version SW 02.xx
Key operation
From Software Version SW 02.01 onwards, the operation of the optical keys of the Tank Side
Monitor NRF590 is based on the distinction between "pressing" and "holding" of the keys.
Pressing a key means to touch the optical key and to release it after a short time (< 2
seconds). The key operation "press" is required for most menue operations.
Holding a key means to touch the optical key for more than 2 seconds.
The key operation "hold" is required for scrolling in lists or changing of values.
The change of the display contrast is based on pressing the optical keys. When pressing
the according key combination, the contrast change screen appears, where the contrast may
be changed by continuously holding the respective keys.
Automatic HART scan
From Software Version 02.01 onwards, the HART scan is performed automatically by the
NRF590 HART Master and needs not to be started from the operating menue.
Modbus termination
From Software Version 02.01 onwards, the Modbus termination is activated via menu
operation, not by a hardware jumper.

Endress+Hauser 3
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning, operation . . . . . . . . . 4
1.3 Operational safety and process safety . . . . . . . . . . 4
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Notes on safety conventions and symbols . . . . . . . 6
2 Identification . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Parts of the Tank Side Monitor . . . . . . . . . . . . . . . . 7
2.2 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Product structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5 Supplied documentation . . . . . . . . . . . . . . . . . . . 10
2.6 CE mark, declaration of conformity . . . . . . . . . . 11
2.7 Registered trademarks . . . . . . . . . . . . . . . . . . . . . 11
3 Installation . . . . . . . . . . . . . . . . . . . . . . .12
3.1 Design, dimensions . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Installation variants . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Rotating the housing . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Rotating the display module . . . . . . . . . . . . . . . . 15
3.5 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.6 Post-installation check . . . . . . . . . . . . . . . . . . . . . 16
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.1 Wiring the Non-IS (Ex d) connections . . . . . . . . 17
4.2 Wiring the IS (Ex ia) connection . . . . . . . . . . . . . 25
5 Operation. . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1 Display and operating elements . . . . . . . . . . . . . 29
5.2 Key assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3 Measured value display . . . . . . . . . . . . . . . . . . . . 33
5.4 Operating menu . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.5 Locking/unlocking parameters . . . . . . . . . . . . . . 39
6 Commissioning. . . . . . . . . . . . . . . . . . . .41
6.1 Theoretical background . . . . . . . . . . . . . . . . . . . . 41
6.2 Configuration of the HART Interface . . . . . . . . . 44
6.3 Addressing of the HART devices . . . . . . . . . . . . . 48
6.4 Steps of the Commissioning Procedure . . . . . . . 49
6.5 Configuring the Modbus Integer Scaling . . . . . . 53
7 Maintenance and repairs . . . . . . . . . . . 55
7.1 Exterior cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.2 Replacing seals . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.3 Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.4 Repairs to Ex-approved devices . . . . . . . . . . . . . . 55
7.5 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.6 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.8 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8 Accessories. . . . . . . . . . . . . . . . . . . . . . . 59
8.1 Discrete I/O modules . . . . . . . . . . . . . . . . . . . . . . . 59
8.2 Rail mounting kit . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9 Trouble Shooting. . . . . . . . . . . . . . . . . . 64
9.1 System error messages . . . . . . . . . . . . . . . . . . . . . 64
10 Technical Data . . . . . . . . . . . . . . . . . . . . 68
10.1 Technical Data at a Glance . . . . . . . . . . . . . . . . . . 68
11 Operating Menu . . . . . . . . . . . . . . . . . . 75
11.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
12 Appendix . . . . . . . . . . . . . . . . . . . . . . . . 76
12.1 Function and system design . . . . . . . . . . . . . . . . . 76
12.2 Tank calculations . . . . . . . . . . . . . . . . . . . . . . . . . . 77
12.3 The block model of the Tank Side Monitor . . . . . 79
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Safety instructions
4Endress+Hauser
1 Safety instructions
1.1 Designated use
The Tank Side Monitor is a monitoring unit for use with the Endress+Hauser Micropilot M
and Micropilot S-series radars and other HART compatible devices. Mounted at the tank
side, the NRF590 provides indication of measured data, allows configuration and supplies
intrinsically safe (i.s.) power to the connected sensors on the tank. Various industry standard
digital gauging communication protocols support integration into open architecture tank
gauging and inventory systems.
1.2 Installation, commissioning, operation
• Mounting, electrical installation, start-up and maintenance of the device may only be
carried out by trained personnel authorized by the operator of the facility.
• Personnel must absolutely and without fail read and understand this Operating Manual
before carrying out its instructions.
• The device may only be operated by personnel who are authorized and trained by the
operator of the facility. All instructions in this Manual are to be observed without fail.
• The installer has to make sure that the measuring system is correctly wired according to
the wiring diagrams. The measuring system is to be grounded.
• Please observe all provisions valid for your country and pertaining to the opening and
repairing of electrical devices.
1.3 Operational safety and process safety
Alternative monitoring measures must be taken to ensure operational safety and process
safety during configuration, testing and maintenance work on the device.
1.3.1 Hazardous areas
Measuring systems for use in hazardous environments are accompanied by separate "Ex
documentation", which is an integral part of this Operating Manual. Strict compliance with
the installation instructions and ratings as stated in this supplementary documentation is
mandatory.
• Ensure that all personnel are suitably qualified.
• Observe the specifications in the certificate as well as national and local standards and
regulations.
1.3.2 FCC approval
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause
undesired operation.
"Caution!
Changes or modifications not expressly approved by the part responsible for
compliance could void the user’s authority to operate the equipment.

Safety instructions
Endress+Hauser 5
1.4 Return
The following procedures must be carried out before a transmitter is sent to Endress+Hauser
for repair:
• Always enclose a duly completed "Declaration of Contamination" form.
Only then can Endress +Hauser transport, examine and repair a returned device.
• Enclose special handling instructions if necessary, for example a safety data sheet as per
EN 91/155/EEC.
• Remove all residue which may be present. Pay special attention to the gasket grooves and
crevices where fluid may be present. This is especially important if the fluid is dangerous
to health, e.g. corrosive, poisonous, carcinogenic, radioactive, etc.
Note!
A copy of the “Declaration of Contamination” is included at the end of this operating
manual.
"Caution!
• No device should be sent back for repair without all dangerous material being completely
removed first, e.g. in scratches or diffused through plastic.
• Incomplete cleaning of the device may result in waste disposal or cause harm to personnel
(burns, etc.). Any costs arising from this will be charged to the operator of the device.

Safety instructions
6Endress+Hauser
1.5 Notes on safety conventions and symbols
In order to highlight safety-relevant or alternative operating procedures in the manual, the
following conventions have been used, each indicated by a corresponding symbol in the
margin.
Safety conventions
#Warning!
A warning highlights actions or procedures which, if not performed correctly, will lead to
personal injury, a safety hazard or destruction of the device.
"Caution!
Caution highlights actions or procedures which, if not performed correctly, may lead to personal
injury or incorrect functioning of the device.
!Note!
A note highlights actions or procedures which, if not performed correctly, may indirectly affect
operation or may lead to an device response which is not planned.
Explosion protection
0Device certified for use in explosion hazardous area
If the device has this symbol embossed on its name plate it can be installed in an explosion
hazardous area.
-Explosion hazardous area
Symbol used in drawings to indicate explosion hazardous areas. Devices located in and wiring
entering areas with the designation “explosion hazardous areas” must conform with the stated
type of protection.
.Safe area (non-explosion hazardous area)
Symbol used in drawings to indicate, if necessary, non-explosion hazardous areas. Devices
located in safe areas still require a certificate if their outputs run into explosion hazardous areas.
Electrical symbols
%Direct voltage
A terminal to which or from which a direct current or voltage may be applied or supplied.
&Alternating voltage
A terminal to which or from which an alternating (sine-wave) current or voltage may be applied
or supplied.
)Grounded terminal
A grounded terminal, which as far as the operator is concerned, is already grounded by means
of an earth grounding system.
*Protective grounding (earth) terminal
A terminal which must be connected to earth ground prior to making any other connection to
the equipment.
+Equipotential connection (earth bonding)
A connection made to the plant grounding system which may be of type e.g. neutral star or
equipotential line according to national or company practice.
Temperature resistance of the connection cables
States, that the connection cables must be resistant to a temperature of at least +85 °C
(+185 °°F).
t >85°C

Identification
Endress+Hauser 7
2 Identification
2.1 Parts of the Tank Side Monitor
L00-NRF590-03-00-06-yy-001
A: Non-i.s. terminal compartment; B: i.s. terminal compartment; C: graphical display; D: optical keys;
E: cable entries for non-i.s. connection (with glands according to product structure);
F: cable entries for i.s. connection (with glands according to product structure); G: nameplate; H: grounding terminals;
I: mounting plate
A
B
C
D
E
F
G
H
I

Identification
8Endress+Hauser
2.2 Nameplate
L00-NRF590xx-18-00-00-yy-001
1: complete product designation; 2/3: power supply specifications; 4: year of construction; 5: NMi certification number; 6/7: PTB
certification number; 8: serial number; 9: reference to installation drawing or safety instructions (for Ex-certified device versions only);
10: type of protection (for Ex-certified device versions only); 11: admissible ambient temperature; 12: certification symbols
Dat./Insp.:
Baujahr
Year of constr.
Zertifikat-Nr.
Certification no.
Tank-Nr.
Tank-no.
IP 65
Ser.No.:
Order Code: NRF590
XA 160 F -
Made in Germany, D-79689 Maulburg
Tank Side Monitor
if modification
see sep. label
X=
T
amb
1
8
2
34
5
6
7
9
10
11
12

Identification
Endress+Hauser 9
2.3 Product structure
This overview does not mark options which are mutually exclusive.
10 Certificates
A Non-hazardous areas
B NEPSI Ex d(ia) IIC T6
6 ATEX II 2 (1) EEx d (ia) IIC T6
U CSA XP Cl. I, Div 1, Gr. A-D, zone 1, 2
S FM XP Cl. I, Div 1, Gr. A-D, zone 1, 2
K TIIS EEx d (ia) IIC T6
Y Special version, TSP-No. to be spec.
20 Field communication protocol Ex d/XP
E ENRAF BPM, 4-20mA input, 4-20mA HART output
G GPE, -20mA output, 4-20mA HART output
1 Whessoe WM550 (dual output), 4-20mA output, 4-20mA HART output
3 Mark/Space, 4-20mA input, 4-20mA HART output
4 Modbus EIA 485
5 Modbus, 4-20mA input, 4-20mA HART output
7 L&J, 4-20mA input, 4-20mA HART output
8 Sakura V1, 4-20mA output, 4-20mA HART output, Relais output
9 Special version, TSP-No. to be spec.
30 Power supply
A 18-55 VAC/DC
B 55-264V AC
Y Special version, TSP-No. to be spec.
40 Spot RTD option
0Notselected
1 Intrinsically safe input
9 Special version, TSP-No. to be spec.
50 Digital Module A
A Not selected
B Input 90-140V AC
C Input 3-32V DC
D Input 180-264V AC
E Input 35-60V AC/DC
G Output 24-250V AC
HOutput3-60VDC
J Output 24-140V AC
K Output 4-200V DC
R Relay 0-100 VDC, 0-120VAC
Y Special version, TSP-No. to be spec.
60 Digital Module B
A Not selected
B Input 90-140V AC
C Input 3-32V DC
D Input 180-264V AC
E Input 35-60V AC/DC
G Output 24-250V AC
H Output 3-60V DC
J Output 24-140V AC
K Output 4-200V DC
R Relay 0-100 VDC, 0-120VAC
Y Special version, TSP-No. to be spec.
70 Additional intrinsically safe module
2 Input 4-20mA + 2x input digital
9 Special version, TSP-No. to be spec.

Identification
10 Endress+Hauser
2.4 Scope of delivery
• Device according to the version ordered
• FieldCare (CD-ROM)
• Accessories (as ordered)
2.5 Supplied documentation
80 Cable entry (Non-IS)
F 2 x Ex d gland G1/2
B 2 x Ex d gland M20 (EEx d > thread M20)
C2xExdthreadG1/2
D2xExdthreadNPT1/2
E2xExdthreadNPT3/4
H 3 x Ex d gland M20 (EEx d > thread M20)
K3xExdthreadG1/2
L3xExdthreadNPT1/2
G 3 x Ex d thread NPT3/4 (in preparation)
Y Special version, TSP-No. to be spec.
90 Entry - IS Compartment
2 2x gland M25, 13-18mm
32xthreadG1/2
42xthreadNPT1/2
52xthreadNPT3/4
9 Special version, TSP-No. to be spec.
100 Weight + Measure Approval
N Not selected
A NMi type approval
G PTB type approval
Y Special version, TSP-No. to be spec.
110 Additional Option
0 Basic version
9 Special version, TSP-No. to be spec.
110 Marking
1 Tagging (TAG), see additional spec.
NRF590 - Complete product designation
Document Designation Content/Remarks
BA00256F/00/EN
(this manual)
Operating
Instructions
Describes installation and commissioning of the Tank Side
Monitor. Only those functions of the operating menu are included,
which are used for a standard measuring task. Any additional
functions are not included.
BA00257F/00/EN Description of
Instrument Functions
Contains a detailed description of all the functions of the Tank Side
Monitor.
XA00160F/00/A3 Safety Instructions Only for device versions approved for use in explosion hazardous
areas;
the nameplate specifies, which of these documents is relevant for
your device version.
ZD00084F/00/EN
ZD00103F/00/EN Installation Drawings
ZE00253F/00/EN NMi Certificate Only for device versions with the respective custody transfer
approval
ZE00255F/00/DE PTB Certificate

Identification
Endress+Hauser 11
2.6 CE mark, declaration of conformity
The device is designed 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. The device complies with the
applicable standards and regulations in accordance with EN 61010 "Protection Measures for
Electrical Equipment for Measurement, Control, Regulation and Laboratory Procedures". The
device described in this manual thus complies with the statutory requirements of the EG
directives. Endress+Hauser confirms the successful testing of the device by affixing to it the
CE mark.
2.7 Registered trademarks
HART®
Registered trademark of HART Communication Foundation, Austin, USA
ToF®
Registered trademark of the company Endress+Hauser GmbH+Co.KG, Maulburg, Germany
MODBUS®
Registered trademark of the MODBUS-IDA, Hopkinton, MA, USA
Enraf®
Registered trademark of the Enraf B.V, Delft, The Netherlands
FieldCare®
Registered trademark of the Endress+Hauser Process Solutions AG, Reinach, Switzerland

Installation
12 Endress+Hauser
3Installation
3.1 Design, dimensions
L00-NRF590-06-00-06-yy-001
3.2 Installation variants
3.2.1 Wall mounting
L00-NRF590-17-00-06-xx-001
114 (4.5)
242 (9.53) 150 (6.0)
100
(3.94)
100
(3.94)
355 (14.0)
ø8.6 (M8)
mm (inch)
EEx d
Electronic
compartment
with LCD
Non-i.s. terminal
compartment (EEx d)
Terminal compartment
for all i.s. wiring
100 (3.94)
mm (inch)
ø8.6 (M8)
100 (3.94)

Installation
Endress+Hauser 13
3.2.2 Mounting on vertical rail
L00-NRF590-17-00-06-en-002
3.2.3 Mounting on horizontal rail
L00-NRF590-17-00-06-en-003
Note!
The rail mounting kit is available as an accessory("Accessories", ä59).
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

Installation
14 Endress+Hauser
3.3 Rotating the housing
For easy access to the display or the terminal
compartment, the upper part of the housing
can be rotated into an arbitrary position. In
order to do this, perform the following steps:
1. Loosen the alignment pin using a 4 mm
Allen key (approx. 5 turns).
2. Rotate the upper part of the housing to
the desired position.
3. Tighten the pin securely.
L00-NRF590-17-00-06-yy-005
➊
➋
➌

Installation
Endress+Hauser 15
3.4 Rotating the display module
In order to facilitate operation and reading
of the measuring value, the display module
can be rotated in the following way:
#Warning!
Danger from elctrical schock! Switch off
power supply before opening the housing.
1. Using a 3 mm /7/64") Allen wrench,
losen the safety pin for the display lid.
2. Unscrew the display lid.
Note!
If the display is difficult to unscrew,
unplug one of the cables from the
cable gland to allow air to enter the
housing. Then, attempt once again
to unscrew the display lid.
3. Push in the two flat areas on each side
of the display module. Remove the
Module from the holder, rotate it into
the desired position and put it back onto
the holder. Snap-in positions are
located at an angle of 45° from each
other.
#Warning!
The maximum angle of rotation is 180°
in both directions (measured from the
initial position).
4. Replace the display lid on the Tank Side
Monitor housing.
Note!
Make sure to clean the threads of
the lid to remove any dust or
paritcles. Check that O-ring is in
place and reapply anti-seize grease.
5. Adjust the safety pin so it is set over the
display lid and tighten.
L00-NRF590-17-00-06-yy-006
➀
➁
➂
➃
➄
4 x 45 °
4 x 45 °

Installation
16 Endress+Hauser
3.5 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
It is recommended to connect the cable shields of the tank instrumentation centrally to the
NRF590 ("Connection of HART devices", ä27).
3.6 Post-installation check
After the Tank Side Monitor has been installed, perform the following checks:
• Is the measuring device damaged (visual check)?
• Have the mounting bolts been tightend securely?
• Are both grounding terminals connected to tank ground?
A > 4 mm2
Tank Ground

Wiring
Endress+Hauser 17
4 Wiring
4.1 Wiring the Non-IS (Ex d) connections
4.1.1 The procedure
Note!
Before starting the wiring procedure,
make sure that the supply voltage is
switched off.
1. Using a 3 mm (7/64") Allen wrench,
losen the safety pin for the lid.
2. Unscrew the lid of the terminal
compartment.
3. Push the power and signal cables
through the appropriate cable glands.
4. Wire up according to the terminal
assignment diagram ("Terminal
assignment of the field protocol/host
side", ä18).
5. Screw the lid of the terminal
compartment securely back onto the
transmitter housing.
Note!
Make sure to clean the threads of
the lid to remove any dust or
particles. Check that O-ring is in
place and reapply anti-seize grease.
6. Adjust the safety pin so it is set over the
display lid and tighten.
L00-NRF590-04-08-08-yy-005
➀
➅
➂
➃
➁
➄

Wiring
18 Endress+Hauser
4.1.2 Terminal assignment of the field protocol/host side
L00-NRF590-04-08-08-en-002
04 A1/+
05 A2/-
06 B1/+
07 B2/-
01 L/+
02 N/-
08 C1
09 C2
10 C3
11 C4
12 C5
13 C6
14 C7
15 C8
01 L/+
04 A1/+
07 B2/-
08 C1
10 C3
12 C5
14 C7
02 N/-
05 A2/-
06 B1/+
00 S
09 C2
11 C4
13 C6
15 C8
00 S
Power
Digital I/O A
Digital I/O B
Cable screen
Field protocol
and
Analog I/O
(for details
see table)
Power
Digital I/O A
Digital I/O B
Cable screen
Field protocol
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 V10V
4 to 20 mA
output #1
+HART
discreteoutput
1C
discreteoutput
2C
EIA-485
Modbus not used2) 485-B 485-A 0 V 0 V1
4 to 20 mA
output3)
+HART
4 to 20 mA
input+24 V
Whessoe
WM550
4 to 20 mA
output #2 Loop 1- Loop 1+ 0 V10V
4 to 20 mA
output #1
+HART
Loop 2- Loop 2+
BPM not used TT0V0V
1
4 to 20 mA
output
+HART
4 to 20 mA
input +24 V
Mark/Space V+ Space Mark 0 V (V-) 0 V1
4 to 20 mA
output
+ HART
4 to 20 mA
input +24 V
L&J Tankway Power Encoder Computer Ground 0 V1
4 to 20 mA
output
+ HART
4 to 20 mA
input +24 V
GPE 4 to 20 mA
output #2 Loop 1- Loop 1+ 0 V10V
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

Wiring
Endress+Hauser 19
4.1.3 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: 1.300 m (4.000 ft).
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 (22967 ft).
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: 1000 m (3281 ft)
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.

Wiring
20 Endress+Hauser
4.1.4 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.
4.1.5 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/-".
Note!
When using the public power supply, install an easy accessible power switch in the
proximity of the instrument. Mark the power supply as a disconnector for the instrument
(IEC/EN 61010).
4.1.6 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 Vdc). 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
4.1.7 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 to 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.zz
onwards, an additional HART signal is available at terminal 13.
14
+
15
-
11/12
+
14
-
14
passive
+
15
-
11/12
active
+
14
-