Flowserve URB 1 User Manual

URB 1

Installation Instructions 810375-03

Operating Terminal and Display Unit URB 1



1

Contents

Page

Important Notes

Usage for the intended purpose ......................................................................................8

Safety note ......................................................................................................................8

Explanatory Notes

Scope of supply ..............................................................................................................8

System description ......................................................................................................8, 9

Function .......................................................................................................................... 9

Technical data ............................................................................................................... 10

Installation

URB 1 ...........................................................................................................................10

Example of installation ................................................................................................ 79

Wiring

Wiring diagram ........................................................................................................ 4, 12

Basic Settings

CAN bus ...................................................................................................................... 13

Node ID for GESTRA bus-based devices URB 1 ....................................................... 13

Factory set default values ............................................................................................ 13

Adjusting display brightness ................................................................................. 14, 15

Changing factory set node ID of URB 1 / adjusting & changing node ID of URB 1 . 16– 18

Possibilities to display bus devices ............................................................................. 18

Setting / changing node IDs of bus-based equipment.......................................... 19– 22

Visual display / parameterisation of bus-based equipment ................................. 23–28

0 %/100 % calibration for capacitance level monitoring system .......................... 29–31

Calibrating feedback potentiometer of an external control valve ......................... 32– 35

Establishing switchpoints and proportional coefficient X

Adjusting sensitivity of response ........................................................................... 40, 41

Setting relay delay times .......................................................................................42– 44

Adjusting conductivity controller ........................................................................... 45– 57

Adjusting LIN (linear) temperature compensation ................................................ 58– 60

Adjusting NORM (standard curve) temperature compensation ........................... 61–65

Enabling AUTO temperature compensation ............................................................ 66, 67

Disabling temperature compensation ................................................................... 68, 69

.................................... 36–39

P

2

Contents

Page

Operation

Manual operation via external control valve ............................................................... 70

Stand-by operation with the steam boiler disconnected............................................. 71

System Malfunctions

Systematic malfunction analysis for troubleshooting .................................................. 72

Fault finding list ...................................................................................................... 73, 74

Annex

Establishing / changing node ID ................................................................................. 75

Factory set node IDs .............................................................................................. 75, 76

Table: standard curves ................................................................................................ 77

Declaration of conformity............................................................................................. 78

3

Wiring Diagram

Terminating resistor 120 Ω,

Fig.1

Paired cable

Operating
terminal
URB 1

Level switch

NRS

CEP*)

Voltage supply CAN data line

Terminating resistor
120 Ω

*) CEP = central earthable point

Fig. 2

4

Conductivity
controller
LRR 1-40

Conductivity
electrode
LRG 16-40

Terminating resistor
120 Ω

Electrode

NRG .. .

Functional Elements

6

Fig. 3

1 2 3 4

5

5

Functional Elements

7

B

Fig. 4

6

A

A

Key

Program button for switching between operating mode and parameterisation mode

1

Increase button

2

3

Decrease button

4

Enter button

5

Manual / automatic button

6

Illuminated LCD display, resolution 128 x 64 pixels

Code switch for baud rate setting

7

A

Fixing screws for panel mounting

Five-pole connector

B

7

Important Notes

Usage for the intended purpose

Use operating terminal & display unit URB 1 only in conjunction with GESTRA
Spector bus systems (CANopen).

Safety Note

Use operating terminal and display unit URB 1 only for operating and viewing
GESTRA CAN bus systems.

The equipment must only be installed by qualified staff.
Qualified staff are those persons who – through adequate training in electrical
engineering, the use and application of safety equipment in accordance with
regulations concerning electrical safety systems, and first aid & accident prevention –
have achieved a recognised level of competence appropriate to the installation and
commissioning of this device.

Explanatory Notes

Scope of supply

URB 1

1 Operating terminal and display unit URB 1 (in plastic case)
2 Fixing screws for panel mounting
1 Installation manual

System description

The URB 1 is a user-friendly operating terminal and display unit for GESTRA CAN
bus systems using the CANopen protocol. The equipment makes retrieving and
processing standard functions of associated system components very easy.

In addition, the URB 1 simplifies the parameterisation procedure: The switchpoints,
proportional band and response sensitivity can be adjusted by means of the keypad
regardless of the actual level. The energizing and de-energizing times of the relays
can be set individually for their respective switchpoints.

The following tables specifiy the GESTRA systems that can be displayed by the
URB 1.

8

Explanatory Notes – continued –

System description – continued –

Standard display information

Actual value (bar chart) ●● ●
Actual value (numerical value) ●● ●
Switchpoint (symbol) ●●● ●
High level alarm (electrode HW) ●●● ●
Low level alarm (electrode LW) ●●● ●
Manual/automatic operation ●● ●
Stand-by mode ●
Unit [µS/cm] or [ppm] ●
Low level limit ●
High level limit ●
Alarm (warning triangle) ●●

Further display information

Actual value (continuous) ●● ●
Switchpoints ●●● ●
Setpoint ●●
Deviation ●●
Valve position ●●
Intermittent blowdown ●
Intermittent blowdown interval ●
Purging pulse 24 h ●
Current CAN bus addresses ●●●●● ●

NRS 1-40 NRS 1-41 NRS 1-42

NRS 1-40 NRS 1-41 NRS 1-42

Level Conductivity

NRS 2-40 NRR 2-40

Level Conductivity

NRS 2-40 NRR 2-40

LRR 1-40

LRR 1-40

Function

The URB 1 communicates with other GESTRA system components via a designated
CAN bus using the CANopen protocol to DIN ISO 11898.

The URB 1 can also be used to operate and display further system components
during operation.

■ Capacitance level switch type NRS 2-40 CANopen

■ Level controller type NRR 2-40 CANopen

■ Conductivity level switch type NRS 1-42 CANopen

■ Low-level alarm to TRD 604/EN type NRS 1-40 CANopen

■

High-level alarm to TRD 604/EN type NRS 1-41 CANopen

■

Conductivity controller and limiter to TRD 604/EN type NRS 1-41 CANopen

9

Explanatory Notes – continued –

Technical data

Type approval no.

TÜV · 98-399 (level)
TÜV · WÜL · 02-007 (conductivity)

Input

Power supply: 18 V – 36 V DC
Interface for CAN bus using CANopen protocol to DIN ISO 11898

Output

Interface for CAN bus using CANopen protocol to DIN ISO 11898

Indicators and adjustors

1 illuminated display, resolution: 128 x 64 pixels
5 push buttons
1 three-pole code switch for baud rate setting

Supply voltage

18 V – 36 V DC

Protection

Front panel: IP 54 to DIN EN 60529
Back: IP 00 to DIN EN 60529

Admissible ambient temperature

0°C – 55 °C

Case material

Front face: Aluminium with polyester membrane
Casing: Noryl GFN 2 SE 1, glass-fibre reinforced

Weight

Approx. 0.3 kg

Installation

URB 1

Panel mounting

1. Provide panel cut-out, dimensions: 92

2. Install URB 1 using the fixing clips supplied with the equipment.

Tool

■ Screwdriver (5.5/100)

10

+0.8

x 92

+0.8

.

Wiring

Note that multi-core control cable with conductors linked in pairs, e. g. UNITRONIC
BUS CAN 2 x 2 x .. mm

2

or RE-2YCYV-fl 2 x 2 x .. mm2 .

®

The baud rate (data transfer rate) dictates the cable length between the bus nodes
and the total power consumption of the sensors dictates the conductor size.

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FFO NO FFO s/tiBk052 m521

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NONOFFOs/tiBk521m0525,0x2x2

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NOFFONOs/tiBk05m005

FFONONOs/tiBk02m0001

NONONOs/tiBk01m0001

sriapforebmuN

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The baud rate is set via a code switch. Reduce baud rate if cable is longer than
specified in the table above. Make sure that all bus nodes feature the same settings.

To protect the switching contacts fuse circuit with 2.5 A (anti-surge fuse) or according
to TRD regulations (1.0 A for 72 hrs operation).

When a max. cable length of more than 125 m (up to 1000 m) is desired, make
sure to modify the baud rate accordingly. Refer to pages 75 and 76 for more
details.

Wiring diagram

For wiring diagram refer to page 4.

Attention

■ Wire equipment in series. Star-type wiring is not permitted.

■ Interlink screens of control cables such that electrical continuity is

ensured and connect them once to the central earthing point (CEP).

■ If more than one system component is connected to a CAN bus

network provide the first and last equipment with a terminating resistor
of 120 Ω, Fig. 2

■ The CAN bus line must not be interrupted while operating with one or

more system components.

Any interruption will open the control circuit!

If the switching controller has to be replaced be sure to remove first
the terminal strips , Fig. 4

B

Note: Make sure that all system components connected are

operating

UNITRONIC® is a registered trademark of LAPP Kabelwerke GmbH, Stuttgart.

before removing the CAN bus line from the terminal strip!

not

11

Wiring – continued –

Note

■

Connect screen only to terminal 3, ensuring electrical continuity and
connect equipment once to the central earthing point (CEP).

■

The loop resistance must be under 10 Ω.

■

The rated voltage is stated on the name plate.

■

Despite correct wiring H.F. interference caused by the installation may
lead to system breakdowns and malfunction messages. If necessary
refer to the fault finding lists of the respective bus equipment.

Tools

■ Screwdriver for slotted screws, size 2.5, completely insulated according to

VDE 0680

12

Basic Settings

CAN-Bus

All level and conductivity controllers and associated electrodes are interconnected by
means of a CAN bus using the CANopen protocol. Every item of equipment features
an electronic address (node ID). The four-core bus cable serves as power supply and
data highway for high-speed data exchange.

The CAN address (node ID) can be set between 60 and 123.
The URB 1 is configured at our works and ready for service with other GESTRA

system components without having to set the node ID.

If several systems of the same kind are to communicate in one CAN bus
network, be sure to assign one node ID for each individual system component
(e. g. controller). Refer to page 75 and 76 for more information.

Node ID for GESTRA bus-based device URB 1

Example: Conductivity monitoring and control

Example: Level monitoring and control

Factory set default values

The URB 1 features the following factory default settings:

■ Baud rate: 250 kb/s

■ Node ID: 060 (Do not change this node ID unless required; highest permissible

setting: 123)

13

Basic Settings – continued –

Adjusting display brightness

The brightness of the LCD display can be
adjusted as necessary.

Press and hold the button for a few
seconds.

The URB 1 enters the address
parameterisation mode.

Press button several times to reduce
the brightness.

14

several times briefly

several times briefly

Basic Settings – continued –

Adjusting display brightness – continued –

Press button several times to
increase the brightness.

Press button briefly to save settings
and return to the main window.

several times briefly

twice briefly

15

Basic Settings – continued –

Changing factory set node ID of the URB 1 / Adjusting & changing node ID

The factory set node ID of the URB 1 is
“060”. Node IDs below this value are
reserved for other GESTRA bus
components.

If additional operating terminals type URB 1
are used in a CAN bus system, you have to
set their node IDs to values above “060”.

Note that the newly established node IDs
must not be identical with node IDs of other
bus components.

Press and hold button for a few
seconds to enter the address
parameterisation mode.

Press button briefly to activate the
line selection mode.

16

a few seconds

briefly

Basic Settings – continued –

Changing factory set node ID of the URB 1 / Adjusting & changing node ID – continued –

Press button briefly to activate the line
editing mode.

Use button or to increase or
decrease the first digit.

flashing

briefly

Press button briefly to move the
cursor two steps further.

flashing

twice briefly

Press button once briefly to select the
digit “1”.

flashing

once briefly

17

Basic Settings – continued –

Changing factory set node ID of the URB 1 / Adjusting & changing node ID – continued –

Press button briefly to activate the line
selection mode.

In our example the node ID was set to
“061”.

briefly

Press button twice briefly to save
settings and return to the main window.

twice briefly

Possibilities to display bus devices

The URB 1 can display only one level monitoring device, one low-level alarm, one
high-level alarm and one conductivity monitoring device per vessel (e. g. steam
boiler or feedwater deaerator).

If the monitoring systems of more than one vessel are to be displayed, provide one

URB 1 per vessel.

18

Basic Settings – continued –

Setting /changing node IDs of bus-based equipment

The standard default node ID setting of all
bus devices that can be displayed is “O
This setting acts as a wild card for all bus
devices which are not displayed with the
URB 1.

For each bus device that shall be displayed
by the URB 1 a node ID has to be
established manually.

We recommend to accept the factory set
node IDs of GESTRA bus devices. For the
relevant node ID setting please refer to the
corresponding installation manual of the
device.

Press button briefly to show the
address list and activate the
parameterisation mode.

FF”.

Press button briefly to activate the line
selection mode.

briefly

briefly

19

Basic Settings – continued –

Setting /changing node IDs of bus-based equipment – continued –

Press button briefly to activate the line
editing mode.
Use button or to increase or
decrease the first digit.

flashing

briefly

Press button once briefly to select the
digit “0”.

flashing

once briefly

Press button briefly to move the
cursor one step further.

Press button twice briefly to select
the digit “0”.

20

flashing

briefly

flashing

twice briefly

Basic Settings – continued –

Setting /changing node IDs of bus-based equipment – continued –

Press button briefly to move the
cursor one step further.

flashing

Press button seven times briefly to
select the digit “1”.

flashing

briefly

7 times briefly

Press button briefly to activate the line
selection mode.

Press button once briefly to move to
the next line.

The node ID of the NRS 1-41 can now
be adjusted.

briefly

once briefly

21

Basic Settings – continued –

Setting /changing node IDs of bus-based equipment – continued –

Press button briefly to activate the
parameterisation mode.

In this example the node IDs of all bus
devices have already been adjusted.

If the display of the NRS 1-42 is required
set the node IDs of the NRS 2-40 and
NRR 2-40 to “O

Press button twice briefly to save the
settings and return to the main window.

FF”.

briefly

twice briefly

22

Basic Settings – continued –

Visual display / Parameterisation of bus devices

The split-screen display window shows which
GESTRA bus devices can be indicated:

■ High-level limiter type NRS 1-41

■ Low-level limiter type NRS 1-40

■ Level switch type NRS 2-40

■ Level controller type NRR 2-40

■ Conductivity controller type LRR 1-40

Press button briefly to enter the display
window of the level controller NRR 2-40.

Actual level (graphical representation)

1

Actual level (percentage)

2
3

Setpoint deviation

4

Proportional band X

5

Switchpoints NRR 2-40

6

Valve position

p

Press button briefly to enter the display
window of the level switch NRS 2-40.

1

Actual level (graphical representation)

2

Actual level (percentage)

3

Control unit 2 highlighted

4

Switchpoints for control unit 2

5

Low-level signal
(flashes in the event of an LW alarm)

6

High-level signal
(flashes in the event of an HW alarm)

LW = low water (limiter NRS 1-40)
HW = high water (limiter NRS 1-41

5

4

1

2

3

6

briefly

4

6

3

1

2

5

briefly

23

Basic Settings – continued –

Visual display / Parameterisation of bus devices – continued –

Press button briefly to enter the
parameterisation mode for the following
settings:

■ 0 % – 100 % calibration NRG 26-40

■ Switchpoints NRR 2-40

■ Proportional band NRR 2-40

■ Switchpoints NRS 2-40

Press button briefly to enter the
parameterisation mode for the following
settings:

■ Relay energizing delay times

■ Relay de-energizing delay times

briefly

briefly

Press button briefly to enter the error
messages window.

For more information see section

Malfunction, Troubleshooting, Fault
Finding List on pages 72 and 74.

Press button briefly to return to the
main window.

1

Actual conductivity value

2

Actual conductivity
(graphical representation)

24

briefly

1

2

briefly

Basic Settings – continued –

Visual display / Parameterisation of bus devices – continued –

Press button briefly to enter the display
window of the conductivity controller LRR 1-40.

Actual conductivity value

1
2

Conductivity setpoint

3

M

AX conductivity value

24 h purging pulse for continuous

4

blowdown valve

5

Operating position of continuous
blowdown valve

Valve position of continous blowdown valve

6

Press button briefly to enter the
parameterisation mode for the following
settings:

■ µS/cm or ppm

■ Indication range of actual value

graphical representation

■ MAX conductivity value

■ Setpoint

■ MIN conductivity value

2
3
4

1

5

6

briefly

briefly

Press button briefly to enter the
parameterisation mode for the following
settings:

■ Proportional band X

■ Controller hysteresis

■ 24 h purging pulse for continuous

p

blowdown valve

■ Operating position of intermittent

blowdown valve

■ Relay contact 4: MIN limit /

Automatic intermittent boiler blowdown

Press button briefly to enter the
parameterisation mode for the following
settings:

■ Linear temperature compensation LIN

■ Automatic temperature compensation AUTO

■ Standard curve temperature compensation

NORM

■ Temperature compensation disabled OFF

briefly

briefly

25

Basic Settings – continued –

Visual display / Parameterisation of bus devices – continued –

Press button briefly to enter the error
messages window.

For more information refer to section

Malfunction, Troubleshooting, Fault
Finding List on pages 72 and 74.

Press button briefly to return to the
main window.

briefly

briefly

26

Basic Settings – continued –

Visual display / Parameterisation of bus devices – continued –

The split-screen display window shows which
GESTRA bus devices can be indicated:

 Level switch type NRS 1-42

This window appears if, as in our example,
only the NRS 1-42 is displayed.

Press button briefly to enter the display
window of the level switch NRS 1-42.

H

IGH LEVEL switchpoint

1
2

Switchpoints

3

L

OW LEVEL switchpoint

1

2

2

3

Press button briefly to select either of the
following two settings:

■ Minimum conductivity of the fluid 0.5 µS/cm

■ Minimum conductivity of the fluid 10 µS/cm

briefly

briefly

27

Basic Settings – continued –

Visual display / Parameterisation of bus devices – continued –

Press button briefly to enter the
parameterisation mode for the following
settings:

■ Relay energizing delay times

■ Relay de-energizing delay times

Press button briefly to enter the error
messages window.

For more information please refer to
section Malfunction, Troubleshooting,
Fault Finding List on pages 72 and 74.

briefly

briefly

Press button briefly to return to the
main window.

In this example only the bus device
NRS 1-42 is displayed.

If the node IDs of the bus devices
NRS 2-40 and NRR 2-40 have been
established such that the equipment can
be displayed on the URB 1, the
indication of these devices will take
priority over the NRS 1-42 and the
display window of the NRS 1-42 will be
blanked.

28

briefly

Basic Settings – continued –

0 % /100 % calibration for capacitance level monitoring system

The split-screen main window shows
which GESTRA bus devices can be
displayed:

 High level limiter NRS 1-41
 Low level limiter NRS 1-40
 Level switch NRS 2-40
 Level controller NRR 2-40
 Conductivity controller LRR 1-40

Before commissioning the installation
establish the measuring range of the
capacitance level electrode NRG 26-40 by
calibrating the 0 % and 100 % settings.

Press button three times briefly to enter
the window for calibrating the 0 % and
100 % settings.

Press button twice briefly to enter the
line editing mode.

Lower the water level in the vessel
to 0 %.

3 times briefly

flashing

twice briefly

29

Basic Settings – continued –

0 % /100 % calibration for capacitance level monitoring system – continued –

Press button briefly to save the 0 %
level setting.

once briefly

Press button once briefly.

once briefly

Press button once briefly to activate the
line editing mode.

Raise the water level in the vessel to
100 %.

If, for practical reasons, it is not possible to
raise the water level to 100 % please
proceed as follows:

30

flashing

once briefly

Basic Settings – continued –

0 % /100 % calibration for capacitance level monitoring system – continued –

Press button five times briefly.
Pressing the button in program mode

will decrement the calibration level in steps
of 10 to a minimum of 50 %.

In our example the calibration level is
50 %.

This calibration method saves time and
prevents the loss of feedwater.

Press button three times briefly to enter
the main window.

flashing

5 times briefly

3 times briefly

31

Basic Settings – continued –

Calibrating the feedback potentiometer of an external control valve

The split-screen window shows which
GESTRA bus devices can be displayed:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Before commissioning the installation
calibrate the 0 % (
range of the feedback potentiometer of an
external control valve.

Press button briefly to enter the display
window of the level controller NRR 2-40.

CLOSED) and 100 % (OPEN)

Press button briefly to activate the
manual mode.

Pressing button or in this mode
allows the manual opening or closing of
an external control valve.

32

briefly

briefly

Basic Settings – continued –

Calibrating the feedback potentiometer of an external control valve – continued –

Press button three times briefly to
activate the line editing mode for
calibrating the signal of the feedback
potentiometer.

flashing

3 times briefly

Press and hold down button until the
control valve is closed.

flashing

hold down

Press button once briefly to save the
current resistance value of the feedback
potentiometer as 0 % setting (valve
closed).

once briefly

33

Basic Settings – continued –

Calibrating the feedback potentiometer of an external control valve – continued –

Press button briefly to select the
calibration of the 100 % setting.

briefly

Press button once briefly to activate the
line editing mode for calibrating the signal
of the feedback potentiometer.

flashing

once briefly

Press and hold down button until the
control valve is open.

34

flashing

hold down

Basic Settings – continued –

Calibrating the feedback potentiometer of an external control valve – continued –

Press button three times briefly to save
the current resistance value of the
feedback potentiometer as 100 % setting
(valve

OPEN).

3 times briefly

Press button briefly to deactivate the
manual mode.

briefly

Press button once briefly to return to
the main window.

once briefly

35

Basic Settings – continued –

Establishing switchpoints and proportional coefficient X

The split-screen main window shows
which GESTRA bus devices can be
indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity electrode LRR 1-40

Before commissioning the installation
establish proportional band and the M
M

IN switchpoints for the level controller

AX/

NRR 2-40.
For level switch NRS 2-40 you can

establish four switchpoints.

Press button three times briefly to enter
the window where you can establish the
switchpoints and the X

value.

p

p

3 times briefly

Press button once briefly to activate
the line editing mode.

Use button or to scroll back and
forth through the lines

36

once briefly

Basic Settings – continued –

Establishing switchpoints and proportional coefficient Xp – continued –

Press button twice briefly to select the
switchpoint 1 (M
NRR 2-40.

Press button once briefly to activate the
line editing mode.

AX switchpoint) of the

twice briefly

flashing

once briefly

Press button once briefly to move to the
next digit in the same line.

flashing

once briefly

37

Basic Settings – continued –

Establishing switchpoints and proportional coefficient Xp – continued –

Press button once briefly.
In our example switchpoint 1

(M

AX switchpoint) shall be established at

70 %.

flashing

once briefly

Press button once briefly.
The last digit in the line is selected and

remains “0” for our example switchpoint
M

AX 70 %.

flashing

once briefly

Press button once briefly to deactivate
the line editing mode.

Press button to go to the next line.

38

once briefly

Basic Settings – continued –

Establishing switchpoints and proportional coefficient Xp – continued –

Press button once briefly.
Switchpoint 2 marks the upper limit of the

proportional band for the level controller
NRR 2-40.

The difference between switchpoint 2 and
switchpoint 3 gives the proportional band
X

. The example setting corresponds to

p

proportional band of 20 % (060 - 040).
Note that the proportional band must be
greater than “0”.

Press button once briefly.
Switchpoint 3 marks the lower limit of the

proportional band for the level controller
NRR 2-40.

The proportional coefficient and the M
switchpoint of the NRR 2-40 as well as
the switchpoints of the NRS 2-40 can be
adjusted as described above.

IN

once briefly

once briefly

Press button twice briefly to return to
the main window.

twice briefly

39

Basic Settings – continued –

Adjusting sensitivity of response

The split-screen window shows which
GESTRA bus devices can be indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 1-42

■ Conductivity controller LRR 1-40

Before commissioning the installation
adjust the response sensitivity of the NRS
1-42.

The response sensitivities of the high­level and low-level limiters are factory
set and cannot be changed.

Press button twice briefly to select
either of the following two response
sensitivities:

■ 0.5 µS/cm

■ 10 µS/cm

Press button twice briefly to activate
the line editing mode.

Use buttons and to toggle between
the two settings.

40

twice briefly

flashing

twice briefly

Basic Settings – continued –

Adjusting sensitivity of response – continued –

Press button briefly.
In our example the response sensitivity

0.5 µS/cm has been selected.

Press button three times briefly to save
the setting and return to the main window.

flashing

briefly

3 times briefly

41

Basic Settings – continued –

Setting relay delay times

The split-screen window shows which
GESTRA bus devices can be indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Before commissioning the installation set
the relay delay times for the individual
switchpoints.

Note that the relay delay times of the
low-level and high-level limiters are
factory set and
the URB 1.

Press button four times briefly to enter
the window for setting the relay delay times
of the switchpoints.

The symbol stands for relay energizing
delay.

The symbol stands for relay de­energizing delay.

A number, for instance “001” corresponds
to a delay time of 100
“030” corresponds to 3 sec and the max.
value “255” corresponds to 25.5 sec.

cannot be changed with

m

sec. The value

4 times briefly

Press button once briefly to activate
the line editing mode.

Use button or to scroll back and
forth through the lines.

42

once briefly

Basic Settings – continued –

Setting relay delay times – continued –

Press button once briefly to activate the
line editing mode.

Press button once briefly.
Press button to move to the next digit in

the same line.

flashing

once briefly

flashing

once briefly

Press button once briefly.
In our example the digit “2” has been

selected.

flashing

once briefly

43

Basic Settings – continued –

Setting relay delay times – continued –

Press button twice briefly to deactivate
the line editing mode.

In our example the relay delay time for the
M

AX switchpoint of the NRR 2-40 is 2 sec.

Press button once briefly.
Switchpoint 2 and switchpoint 3 of the

NRR 2-40 mark the upper and lower limit
of the proportional band. The relay
energizing and de-energizing delays
cannot be adjusted and feature the
number “000”.

The relay delay times of all other
switchpoints can be adjusted as described
above.

twice briefly

once briefly

Press button twice briefly to save the
settings and return to the main window.

44

twice briefly

Basic Settings – continued –

Adjusting conductivity controller

The split-screen main window shows
which GESTRA bus devices can be
indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Press button twice briefly to enter the
parameterisation mode for the following
settings:

■ µS/cm or ppm

■ Indicating range of actual value graphics

■ Max. conductivity

■ Setpoint

■ Min. conductivity

Press button twice briefly to activate
the line editing mode.

Use button or to scroll back and
forth through the lines.

twice briefly

flashing

twice briefly

45

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly to select the
desired unit of measurement (here: ppm).

Press button once briefly to deactivate
the line editing mode.

All conductivity values metered will now be
indicated in [ppm].

flashing

once briefly

once briefly

Press button once briefly.
In this line you can calibrate the graphical

representation (bar chart) of the
conductivity value shown in the main
window. This setting will also calibrate the
actual value output (4 - 20 mA).

First ascertain the conductivity measuring
range used in your installation
(e. g. 0.5 µS/cm up to 20 µS/cm).

Press button once briefly to activate the line
editing mode.

You can choose between the following ranges:

■ 0.5 to 20 µS/cm ■ 0.5 to 1000 µS/cm

■ 0.5 to 100 µS/cm ■ 0.5 to 2000 µS/cm

■ 0.5 to 200 µS/cm ■ 0.5 to 6000 µS/cm

■ 0.5 to 500 µS/cm ■ 0.5 to 12000 µS/cm

46

once briefly

flashing

once briefly

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button seven times briefly to
select the range 0.5 to 20 µS/cm.

Press button once briefly to deactivate
the line editing mode.

flashing

7 times briefly

once briefly

Press button once briefly to enter the
line where the conductivity setpoint of the
LRR 1-40 can be adjusted.

Press button once briefly to activate the line
editing mode.

once briefly

flashing

once briefly

47

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly to move the
cursor one step further.

Press button twice briefly to select the
digit “3”.

flashing

once briefly

flashing

twice briefly

Press button five times briefly.
In our example a conductivity setpoint of

3000 µS/cm has been adjusted.

Press button once briefly to enter the line where
the M

IN conductivity limit of the LRR 1-40 can be

adjusted.
The M

IN switchpoint of the LRR 1-40 can be

adjusted in the same way as the conductivity
setpoint.

48

5 times briefly

once briefly

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly to enter the
line where the M
LRR 1-40 can be adjusted.

The M

AX switchpoint of the LRR 1-40 can

be adjusted in the same way as the
conductivity setpoint.

Press button once briefly to deactivate
the line editing mode.

AX conductivity limit of the

once briefly

once briefly

Press button once briefly to enter the
parameterisation window for the following
settings:

■ Proportional band X

■ Control hysteresis

■ 24 h purging pulse for continuous

p

blowdown valve

■ Operating position of intermittent

blowdown valve

■ Relay contact 4 / automatic intermittent

boiler blowdown

Press button twice briefly to activate the line
editing mode.

In this line you can set the proportional band X
X

= 0: Two-position (on-off) control

p

X

> 0: Modulating control

p

once briefly

.

p

flashing

twice briefly

49

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly to move the
cursor one step further.

Press button twice briefly to select the
digit “2”.

flashing

once briefly

flashing

twice briefly

Press button twice briefly.
In our example the proportional band X

p

was set to 20 %.

Press button once briefly to enter the line where
the control hysteresis of the LRR 1-40 can be
adjusted.

The hysteresis can be adjusted within a range of
0 % – 25 %.

The control hysteresis of the LRR 1-40 can be
adjusted the same way as the proportional
band X

If X

.

p

> 0 this function is deactivated.

p

50

twice briefly

once briefly

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly to enter the
line where the 24 h purging pulse for the
continuous blowdown valve can be
adjusted.

Use buttons and to enable or,
respectively, disable the 24 h purging
pulse.

Press button once briefly to enter the
line where the operating position of the
continuous blowdown valve can be
changed.

once briefly

once briefly

Press button once briefly to enter the window
where the operating position and the feedback
potentiometer of the continuous blowdown valve
can be adjusted.

If X

> 0 the operating position setting

p

is deactivated.
The window shows also the reference values

(in %) as indicated by the scale of the GESTRA
continuous blowdown valve BAE (000 = 0 %, 035
= 35 %) and the current position of the continuous
blowdown valve (in %).

Press button twice briefly to activate the line
editing mode.

Use button or to change the values of the
digits. Press to go to the next digit.

The value 008 corresponds to an opening
position of 8 %. (Max. opening position 25 %)

once briefly

flashing

twice briefly

51

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly.
The value 008 = 8

now selected.

Press button once briefly.
In this line you can establish the 0

value of the feedback potentiometer of the
continuous blowdown valve.

% operating position is

%

once briefly

once briefly

Press button once briefly to activate the
line editing mode.

Press and hold down button until the continuous
blowdown valve is closed.

52

flashing

once briefly

flashing

hold down

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly.
The current resistance value of the

feedback potentiometer is saved as
0% position (valve CLOSED).

Press button once briefly to activate the
100% adjustment position.

once briefly

once briefly

Press button once briefly to activate the
line editing mode.

Press and hold down button until the
continuous blowdown valve is completely open.

flashing

blinkt

flashing

blinkt

flashing

once briefly

hold down

53

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly.
The current resistance value of the

feedback potentiometer is now saved as
100% position (valve OPEN).

Press button three times briefly.

once briefly

3 times briefly

Press button once to activate the line
selection mode.

Press button four times briefly.
In this line you can decide whether you want

to use relay contact 4 (LRR 1-40) for MIN
alarm or for automatic intermittent boiler
blowdown.

The relay contact 4 of the LRR 1-40 is located
across terminals „28“, „29“ and „30“.

Please observe the wiring diagram of the
LRR 1-40.

54

once briefly

4 times briefly

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly to activate the line
editing mode.

Press button once briefly to activate relay
contact 4 for establishing MIN alarm.

The relay contact 4 of the LRR 1-40 is
located across terminals „28“, „29“ und „30“.

Please observe the wiring diagram of the
LRR 1-40.

flashing

once briefly

flashing

once briefly

Press button once briefly to activate the
automatic intermittent blowdown function.

Press button once briefly to enter the
window where the following parameters
can be set:

■ Frequency of the intermittent blowdown

(in hours)

■ Duration of the intermittent blowdown

(in seconds)

flashing

once briefly

once briefly

55

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly to activate the line
selection mode.

The frequency of the intermittent blowdown can
be adjusted in the line editing mode in the same
way as the proportional band X

.

p

once briefly

56

Basic Settings – continued –

Adjusting conductivity controller – continued –

Press button once briefly.
The duration of the intermittent

blowdown can be adjusted in the line
editing mode in the same way as the
proportional band X

In our example the blowdown frequency
was set to 1 hour and the blowdown
duration to 1 second.

Press button twice briefly to accept the
configuration.

.

p

once briefly

twice briefly

Press button once briefly to return to
the main window.

once briefly

57

Basic Settings – continued –

Adjusting LIN (linear) temperature compensation

The split-screen main window shows
which GESTRA bus devices can be
indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Press button four times briefly to enter the
window where the following parameters can
be set:

■ Linear temperature compensation [% / °C]

■ Recording a temperature curve

■ Cell constant C of the conductivity

electrode

The factory set default setting is “TK:LIN”.

Press button once briefly to activate
the line editing mode.

58

4 times briefly

once briefly

Basic Settings – continued –

Adjusting LIN (linear) temperature compensation – continued –

Press button once briefly to enter the line
where the linear temperature compensation
[% /°C] can be adjusted.

The factory set gradient 2.1 [%/ °C] is
normally used for steam boilers operating
with constant pressure.

When the boiler is at full working pressure
compare the indicated value with the reading
of a calibrated conductivity meter – the two
values must tally.

Press button once briefly to activate the
line editing mode.

If the reading of the calibrated conductivity
meter does not tally the value indicated by
the URB 1 the compensation gradient has
to be changed until the two values agree.

Example: With a gradient of 1.9 %/ °C the
two readings tally.

flashing

once briefly

once briefly

Press button once briefly to select the
digit “1”.

Press button once briefly to move
the cursor one step further.

flashing

once briefly

flashing

once briefly

59

Basic Settings – continued –

Adjusting LIN (linear) temperature compensation – continued –

Press button twice briefly to select the
digit “9”.

flashing

Press button once briefly to accept the
configuration.

In our example a gradient of 1.9 %/ °C was
adjusted.

twice briefly

once briefly

Press button twice briefly to return to
the main window.

60

twice briefly

Basic Settings – continued –

Adjusting NORM (standard curve) temperature compensation

The split-screen main window shows
which GESTRA bus devices can be
indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Press button four times briefly.
The NORM (standard curve) temperature compen-

sation is suitable for steam boilers operating with
variable pressures, which means that the steam
boilers do not feature fixed working pressures/
temperatures (e. g. low load 10 bar, peak load 15 bar).

The standard curves of 11 feedwater conditioning
agents with different conductivities compensate the
thermal influences of the measurement within the
rated operating range. In our example we have started

from the factory set “TK:LIN” mode.

4 times briefly

Press button twice briefly to activate the
line editing mode.

flashing

twice briefly

61

Basic Settings – continued –

Adjusting NORM (standard curve) temperature compensation – continued –

Press button twice briefly to select the
function NORM.

The function NORM allows the retrieval of
11 different standard curves stored in the
URB 1. The curves are applicable for different
feedwater conditioning agents with different
basic conductivities.

For more information see Annex (page 77).

Press button once briefly to activate the
line editing mode.

In this window the following parameters can
be set:

 Standard curve temperature compensation

[% /°C]

 Recording/adding a temperature curve
 Cell constant of the conductivity electrode

Our example shows the factory setting “00”,
which means that no standard curve has
been selected and activated.

flashing

twice briefly

once briefly

Press button once briefly to enter the
line where you can select a standard curve.

For more information see Annex (page 77).

Press button once briefly to activate the
line editing mode.

62

once briefly

flashing

once briefly

Basic Settings – continued –

Adjusting NORM (standard curve) temperature compensation – continued –

Press button once briefly to move the
cursor one step further.

flashing

Press button once briefly to select
the digit “1”.

flashing

once briefly

once briefly

Press button once briefly to accept the
configuration.

The standard curve “01” is now active.
The temperature values of the standard

curve “01” are based on the conditioning
agent caustic soda with a basic conductivity
of 260 µS/cm at 25°C.

For more information see Annex (page 77).

Press button once briefly to enter the line where
you can start recording the temperature/
conductivity curve that is characteristic of your
steam boiler.
The temp./conductivity values recorded by the
system cover the whole room temp. to service
temp. range.
In case of variable pressure operation we
recommend that you also record the AUTO curve.
If the standard curves are not suitable you can then
still use the AUTO curve.

once briefly

once briefly

63

Basic Settings – continued –

Adjusting NORM (standard curve) temperature compensation – continued –

Press button once briefly to activate the
line editing mode.

flashing

once briefly

Press button once briefly to select the
function “start”.

flashing

once briefly

Press button once briefly to finish the
configuration.

Raise temp./ pressure until the steam boiler
settles at full working pressure (in case of
variable pressure operation until the highest
operating pressure is reached).

The LRR 1-40 will now record the
temperature/conductivity values and saves
them as AUTO curve in the URB 1.

The number of recorded temp./conductivity
values is indicated in the line “Temp.”.

Press button once briefly.
The recording of the AUTO curve is

finished once the steam boiler has
reached its working pressure.

In our example 15 temp./conductivity
values were recorded. A temperature of

181.7 °C was detected at the measuring
point of the conductivity electrode
LRG 16-40, which corresponds to a boiler
pressure of 10.3 bar.

64

once briefly

flashing

once briefly

Basic Settings – continued –

Adjusting NORM (standard curve) temperature compensation – continued –

Press button twice briefly to select
the function “Stop”.

The recording of the temperature/
conductivity values is now finished.

The boiler specific AUTO curve can be
activated on the display “TK:AUTO”.

For more information see page 77.

Press button three times briefly to
return to the main window.

flashing

once briefly

3 times briefly

65

Basic Settings – continued –

Enabling AUTO temperature compensation

The split-screen main window shows
which GESTRA bus devices can be
indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Press button four times briefly.
The AUTO curve temperature compensation is

suitable for steam boilers operating with variable
pressures, which means that the steam boilers do
not feature fixed working pressures/temperatures
(e. g. low load 10 bar, peak load 15 bar).

The procedure for recording an AUTO curve is
described on pages 63 to 65.

In our example we have started from the setting
“TK:NORM”.

4 times briefly

Press button twice briefly to activate
the line editing mode.

66

flashing

twice briefly

Basic Settings – continued –

Enabling AUTO temperature compensation – continued –

Press button once briefly to select the
function “Auto”.

flashing

Press button once briefly to finish the
configuration.

In our example we have activated an AUTO curve
with 15 temp./conductivity values which has been
recorded and stored in the URB 1.

A new AUTO curve can always be recorded which
will then overwrite the old one.

The procedure of recording an AUTO curve has
been described on pages 63 to 65.

once briefly

once briefly

Press button once briefly to return to
the main window.

once briefly

67

Basic Settings – continued –

Disabling temperature compensation

The split-screen main window shows
which GESTRA bus devices can be
indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Press button four times briefly.
Some industrial applications may require

disabling the temperature compensation. Note
that with this mode all conductivity values
displayed by the URB 1 are absolute
readings of the current conductivity.

In our example we start from the factory set
“TK:LIN” mode.

Press button twice briefly to activate
the line editing mode.

68

4 times briefly

flashing

twice briefly

Basic Settings – continued –

Disabling temperature compensation – continued –

Press button three times briefly to
select the function “OFF”.

Press button once briefly to save settings and
finish the configuration.

The temperature compensation is now disabled.

flashing

3 times briefly

once briefly

Press button once briefly to return to
the main window.

once briefly

69

Operation

Manual operation via external control valve

The split-screen main window shows which
GESTRA bus devices can be indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Press button briefly to enter the display
window of the level controller NRR 2-40.

Press button briefly to activate the
manual mode.

Use buttons and in this mode to
manually open and close an external
control valve.

Press button a second time to disable
the manual mode and to move the control
valve back into the position dictated by the
controller NRR 2-40.

70

briefly

briefly

Operation – continued –

Stand-by operation with the steam boiler disconnected

The split-screen main window shows which
GESTRA bus devices can be indicated:

■ High-level limiter NRS 1-41

■ Low-level limiter NRS 1-40

■ Level switch NRS 2-40

■ Level controller NRR 2-40

■ Conductivity controller LRR 1-40

Use an external switch to enable the stand-by
mode of the conductivity control.

After switching off the burner of the steam boiler
you can deactivate the control of the continuous
and intermittent blowdown valves in order to avoid
loss of boiler water (stand-by operation).

After returning to normal operation the continuous
blowdown valve moves into the control position
and an intermittent blowdown pulse is given
(if activated).

Please take the wiring diagram of the
installation manual for the LRR 1-40 into
consideration.

71

System Malfunctions

Troubleshooting

The sources of malfunctions occurring in CAN bus systems operating with several bus­based stations must be analysed systematically since faulty components or incorrect
settings can give rise to negative interactions with intact bus devices in the CAN bus
system. These unwanted interactions can cause error messages in fully functional bus
devices, which will make fault detection even more difficult.

We recommend the following systematic fault location procedure:

Step 1 (Start)

Detach terminal strips
in all sensing units of
bus devices.

Level electrode
Conductivity
electrode
Pressure sensor
Temperature sensor

Check

Use fault-finding list
to correct fault(s).

Final test: have all
faults been
eliminated?

System
Malfunction

Use fault-finding list
to identify the fault(s).

Cut off power supply
to the equipment.

72

Step 2

Plug in terminal strip
of the sensing unit of
one system, e. g.

NRS ...

and

NRG ... (sensor).

Step 3

Apply mains voltage
to bus devices of the
system e. g.

NRS ...

and

NRG ...

System O.K.

Detach terminal strips
between bus devices
of the sytem e. g.

NRS ...

and

NRG ...

System Malfunctions – continued –

Fault Finding List

The data communication in the CAN
bus line is disrupted.

Check that the CAN bus line has been

wired according to the wiring diagram.
Check that the CAN bus line is not

interrupted due to conductor breakage.
Check that the controllers and

electrodes feature the correct node IDs.

The thermal fuse of one of the level
electrodes has been triggered.

Check that the level electrode has been

mounted as specified in the installation
manual.

Check whether external influences
have caused built-up of heat in the
electrode casing.

flashing flashing

5 times briefly

The thermal fuse of the conductivity
electrode has been triggered.

Check that the conductivity electrode

has been mounted as specified in the
installation manual.

Check whether external influences
have caused built-up of heat in the
electrode casing.

The conductivity electrode is
defective.

The temperature sensor of the
conductivity electrode is short circuited
or interrupted.

Replace conductivity electrode
LRG 16-40.

5 times briefly

5 times briefly

73

System Malfunctions – continued –

Fault Finding List – continued –

The conductivity electrode is
defective.

The internal connecting cables of the
conductivity electrode are short
circuited or interrupted.

Replace conductivity electrode
LRG 16-40.

The CAN bus communication of a
controller is disrupted.

Check that the controller and the level

or conductivity electrode have been
mounted as specified in the wiring
diagram.

In our example there is a disruption in
the CAN bus communication of the low­water level electrode 2 type NRG 16-40.

5 times briefly

once briefly

The CAN bus communication of a
controller is disrupted.

Check that the controller and the level

or conductivity electrode have been
mounted as specified in the wiring
diagram.

In our example there is a disruption in
the CAN bus communication of the
switching controller type NRS 1-40.

If faults occur that are not listed
above, please contact our subsidiary
or agency in your country.

74

once briefly

Annex

Establishing / changing node ID

If several systems of the same kind are to communicate in one CAN bus network
establish one node ID for each individual system (e. g. controller).

Factory set node IDs

Controller

The individual node IDs must be adjusted manually on the respective devices.
Please observe the relevant installation instructions.

Attention

■ Do not assign the same node ID twice within the CAN bus network.

Electrode

75

Annex – continued –

Fig. 5 Rear panel of the URB 1

76

S8

OFF

ON

OFF

ON

OFF

ON

Fig. 6 Default factory setting 250 kBit/s

S9 S0

OFF

ON

ON

OFF
OFF
OFF

ON
ON

ON
ON

ON
ON

Baud rate

250 kBit/s

125 kBit/s
100 kBit/s

50 kBit/s
20 kBit/s
10 kBit/s

Cable length

125 m

250 m
335 m
500 m

1000 m
1000 m

Annex – continued –

Table: Standard Curves

.oNtnegagninoitidnoCC°52ta]mc/Sm[ytivitcudnoccisaB

1adoscitsuaC062
2adoscitsuaC0801
3adoscitsuaC0045
4adoscitsuaC00011
5etahpsohpmuidosirT091
6etahpsohpmuidosirT0011
7etahpsohpmuidosirT0095
8etahpsohpmuidosirT00211
9etiflusmuidoS089

01444euqilopiD002

11nixoveL591

77

Annex – continued –

Declaration of conformity

We hereby declare that the equipment URB 1 conforms to the following European
guidelines:

■ LV directive 73/23/eec version 93/68/eec

■ EMC guideline 89/336/eec version 93/68/eec

which are based on the following harmonised standards:

■ LV standard EN 50178

■ EMC standard EN 50081-2, EN 50082-2

This declaration is no longer valid if modifications are made to the equipment without
consultation with us.

Bremen, 23rd May 2002

GESTRA GmbH

Dipl.-Ing. Stefan Bode

(Academically qualified engineer)

Head of R & D Dept. Electronics

Key

Fixing screw for panel mounting

A

Dipl.-Ing. Lars Bohl

(Academically qualified engineer)

Quality Assurance Manager

78

Example of Installation

95

A

63

Fig. 7

95

79

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Great Britain
Flowserve Flow Control (UK) Ltd.

Burrel Road, Haywards Heath
West Sussex RH 16 1TL
Tel. [phone] / 31 44 00
Fax [phone] / 31 45 57
E-mail: [e-mail]

France
Flowserve Flow Control S. A.S.

10 Avenue du Centaure, BP 8263
F-95801 CERGY PONTOISE CEDEX
Tél. 00.33.1 / 34 4326 60
Fax 00.33.1 / 34 43 26 87
E-mail: [e-mail]

España
GESTRA ESPAÑOLA S.A.

Luis Cabrera, 86-88
E-28002 Madrid
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

Italia

Flowserve S.p. A

Divisione Italgestra
Via Prealpi, 30 – 20032 Cormano (MI)
Tel. [phone]
Fax 0039 02 / 66 32 55 60
E-mail: [e-mail]

Portugal

Flowserve Portuguesa, Lda.

Av. Dr. Antunes Guimarães, 1159
Porto 4100-082
Tel. [phone]
Fax [phone]
E-mail: [e-mail]

®

GESTRA GmbH

Postfach 10 54 60, D-28054 Bremen, Münchener Str. 77, D-28215 Bremen
Telefon [phone], Telefax [phone]
E-Mail [e-mail], Internet www.gestra.de

A Unit of Flowserve Corporation

810375-03/304 · © 2002 GESTRA GmbH · Bremen · Printed in Germany

80