K-Patents DD-23 User Manual

PROCESS INSTRUMENTS

INSTRUCTION

MANUAL

IM-EN-DD23 Rev. 1.42

DIGITAL DIVERT
CONTROL SYSTEM
DD-23

Table of contents

1 Introducon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 The Divert Control System DD-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Divert Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.3 Operator panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3.2 Green indicator lights: System ok . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3.3 Yellow indicator lights: Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3.4 Red indicator lights: Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3.5 White pushbuons: Tesng and reseng . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3.6 Header wash key: Enabling ring header wash . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.7 Emergency divert buon: Manual divert . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.8 External emergency divert buon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4 Prism wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.5 Indicang transmiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Mounng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Mounng prism wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2.1 Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Switch inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.3.1 External Divert switch/push buon - input J8 . . . . . . . . . . . . . . . . . . . . . . 10

3.3.2 External divert reset buon - input J9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.3.3 Header wash key - input J10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.4 Remote ethernet connecon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1 Divert system pre-startup checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Divert control unit DD-23 startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5 Configuraon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1 Calibraon lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2 Divert decision rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3 Refractometer concentraon measurement . . . . . . . . . . . . . . . . . . . . . . . . 17

5.4 Refractometer acvaon for divert control . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.5 Signal difference alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.6 Low alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.6.1 Solids warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.6.2 Solids alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.7 Refractometer malfuncon alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.8 Prism wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6 Regular maintenance and troubleshoong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.1 Informaon flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2 Malfuncons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.3 Diagnosc tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.4 Troubleshoong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.4.1 A queson mark (?) on the refractometer display . . . . . . . . . . . . . . . . . . 23

6.4.2 A refractometer refuses to come on-line . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.4.3 No lights come up in the Divert Control Unit . . . . . . . . . . . . . . . . . . . . . . 24

6.4.4 All lights are blinking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

7 Divert control logics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.1 Safety decision logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.2 Divert decision logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.3 In operaon logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.4 Malfuncon logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.5 Reseable alarm logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.6 Refractometer difference logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.7 Wash arbitraon logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.8 Wash check logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8 Remote control interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.1 Divert Control Unit IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.2 The remote interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.2.1 Main page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.2.2 Instrument pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.2.3 Diagnoscs page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.2.4 Log page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.2.5 Parameters page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.3 Data logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

9 DD-23 specificaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.1 Divert Control Unit specificaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9.2 Divert control unit spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10 Oponal Remote Divert Terminal DD-23-RT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.1 Mounng instrucons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.2 Startup and use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

10.3 Troubleshoong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

A Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

1 Introducon

The K-Patents Digital Black Liquor Divert Control System DD-23 provides a divert sig­nal preventingblack liquor with dangerously low solids to reach the black liquor burn­ers. The system is built strictly according to the principles of Recommended Good
Practice "Safe Firing of Black Liquor in Black Liquor Recovery Boilers" (BLRBAC April
2010; the document is available at

http://www.blrbac.org/Sept2010Updates/Safe_Firing_of_Black_Liquor_April_2010.pdf).

The system consists of the following parts: Two K-Patents Process refractometers
PR-23-SD (A & B) are installed in series in the main black liquor line. Each refrac­tometer is complete with a sensor, an Indicating transmitter and interconnecting ca­bles. Each refractometer provides also two 4–20 mA output signal not used by the
divert control system. These can be used to give % solids output or temperature out­put signals. The sensors are also equipped with a steam wash nozzles although the
self-cleaning sensor design may eliminate the need for prism wash altogether.

1.1 Warranty

K-Patents warrants that all products made by K-Patents shall be free of defects in ma­terial and workmanship. K-Patents agrees to either replace or repair free of charge,
any such product or part thereof which shall be returned to the nearest authorized
K-Patents repair facility within two (2) years from the date of delivery.

1

Before returning a defective product for service or replacement, please contact K-Pa­tents or your nearest K-Patents representative (see http://www.kpatents.com/ for
contact information). For the health and safety of personnel handling your return,
clean the instrument, especially the parts that have been in contact with the process
liquid, before packing it. Ship the cleaned instrument to the address given to you.

1.2 Disposal

When disposing of an obsolete instrument or any parts of an instrument, please ob­serve the local and national requirements for the disposal of electrical and electronic
equipment. The aluminium or stainless steel sensor housing can be recycled with
other metallic waste of the same type.

2

Figure 1.1 Complete Digital Black Liquor Divert Control System DD-23

2 The Divert Control System DD-23

2.1 Overview

The Divert control system DD-23 includes:

− A Divert Control Unit

− Two isolation valves SDI for the refractometers above to allow removal of the re-

fractometers from a pipe with full 󰅮low and pressure. The isolation valve includes
a prism wash nozzle and two check valves (one for prism wash, one for stuf󰅮ing
box 󰅮lush).

− A roofed mounting plate to mount the two Indicating transmitters and the Divert

Control Unit together.

− Wiring to connect the Indicating transmitters with the Divert Control Unit.

− Two steam valves with steam traps for prism wash (pneumatic + solenoid valves).

− Two hand valves (one for prism wash, one for stuf󰅮ing box 󰅮lush).

− A remote operator panel facility, accessible with a web browser over Ethernet

BLRBAC (The Black Liquor Recovery Boiler Advisory Committee) recommends a
spare refractometer sensor to be maintained in stock on-site.

3

2.2 Divert Control Unit

The Divert Control Unit is contained in an enclosure with the same dimensions as the
refractometer transmitter enclosure. The control unit includes:

− An operator with system state indicators and pushbuttons

− Relay outputs for connecting to the control system

− Contact inputs for external control

− Ethernet interface for remote operator panel

2.3 Operator panel

The operator panel has a clear layout and the operator can see all information at one
glance. The divert decision is controlled from the operator panel which provides dou­bled security, since information is shown both as LED indication in the Divert control
unit and as a diagnostic messages in the Indicating transmitters. The same informa­tion is also available through the remote operator panel.

4

Red indicator
lights (alarms)

Yellow indicator
lights (warnings)

Green indicator
lights (all well)

White push­buttons

Red push-button

2.3.1 Overview

Figure 2.1 DD-23 operator panel

The three top rows on the operator panel consist of indicator lights. The green A IN

OPERATION and B IN OPERATION lights are also push buttons used to include the refrac-

tometers in the Divert system. Below the lights there are push buttons and the HEADER

WASH key key used to operate the system.

The indicator lights on the operator panel are arranged like traf󰅮ic lights: top row is
red for alarm, middle row is yellow for warning and bottom row is green for "system
ok". When the system is running normally, only the row of green lights should be lit.

The white LIGHT TEST button is used to check that all the LEDs behind the indicator
lights are working. It also veri󰅮ies the data processing system in the control unit. The
other two white push buttons, ALARM RESET and DIVERT RESET can be used to reset
the system back to normal after all problems have been 󰅳ixed. The HEADER WASH key
enables the use of ring header washing with water, when set to ON.

The big red EMERGENCY DIVERT push button is used to manually initiate divert in an
emergency situation. An external push button can also be connected to a switch input
in the control unit as External Emergency divert button, see Section 2.3.8.

2.3.2 Green indicator lights: System ok

Each refractometer has a green operating light – A IN OPERATION and B IN OPERATION –
to let the operator know when he can rely on the refractometer measurement. A re­fractometer will only in󰅮luence the divert decision and activate warnings and alarms
when it is in divert operation, i.e. when its green operating light is lit.

When DIVERT is effective, the system may be reset to normal operation only when

SAFE SOLIDS is lit.

2.3.3 Yellow indicator lights: Warnings

The SOLIDS WARNING light indicates a black liquor concentration of below warning
limit (by default at 60%). This warning can be activated by either refractometer.

The A&B DIFFERENCE light is lit when the refractometer readings differ by at least 2%.
This warning will only be initiated if both refractometers are operating.

If the yellow MALFUNCTION light is switched on, some part of the system – a refrac­tometer, an indicating transmitter or the control unit – is malfunctioning. A list over
malfunctions and critical malfunctions is given in Section 6.2. If a critical malfunction
occurs in a sensor or transmitter, the malfunctioning refractometer will be automat­ically removed from divert operation (its operating light will also be switched off).
Check the reason for the malfunction and correct the problem (see Section 6.4) be­fore returning the refractometer back to divert operation.

5

2.3.4 Red indicator lights: Alarms

The black liquor SOLIDS ALARM is lit when the concentration reading goes below alarm
limit (by default below 58%). This alarm can be activated by either refractometer
depending on the operation rule setting.

The DIVERT light will be switched on when the SOLIDS ALARM is activated. The DIVERT
light indicates divert status of the divert relay. The relay is inactive in the divert posi­tion, because then a power failure will give a divert decision signal to the system.

The OVERRIDE light is lit to indicate that no automatic divert will happen as long as
the system is in the header wash state (see Section 2.3.6).

2.3.5 White pushbuons: Tesng and reseng

The LIGHT TEST button switches all 12 lights on. The ALARM RESET button resets the
alarm lights.

6

2.3.6 Header wash key: Enabling ring header wash

The header wash key function is a 3-level procedure which can be used when ring
header washing with water is needed. When the HEADER WASH key is switched to ON
position and information from black liquor guns switch inputs connected in series tell
that guns are out from recovery boiler, then a ring header wash can be done without
activating Divert.

Pushing the EMERGENCY DIVERT button will always initiate divert regardless of the
header wash functionality.

2.3.7 Emergency divert buon: Manual divert

The EMERGENCY DIVERT push-button is used to manually initiate divert in an emer­gency situation.

2.3.8 External emergency divert buon

An external (remote) push button can also be connected to an input inside the Control
unit, see Figure 3.3.

External emergency divert button must be normally closed (NC). Opening the circuit
will initiate divert.

2.4 Prism wash

The wash parameters for the sensors are set through each transmitter (Section 2.4).
The transmitters contain a relay for prism wash. To follow the BLRBAC recommenda­tion not to wash both prisms at the same time, the Divert Control Unit implements an
interlock which prevents the instrument from washing both sensors simultaneously.

2.5 Indicang transmiers

Mechanically the Indicating transmitters shipped with a DD-23 are the same than
PR-23 Indicating transmitter DTR. The transmitter will only allow single sensor con­nection and a special DD-23 transmitter software is used for the Divert system. When
Divert software is 2.01 or newer, Indicating transmitter software version has to be

4.12 or newer.

For more information on the basic functions of an indicating transmitter, please see
the PR-23 manual, chapters 3 and 10.

3 Mounng

For mounting of the process refractometers and the isolation valves, consult the sep­arate process refractometer PR-23 instruction manual.

7

Figure 3.1 Mounng the Divert control system

3.1 Mounng prism wash

K-Patents recommends to use a steam trap instead of a preconditioning valve to re­move condensate from the steam line.

8

3.2 Wiring

For wiring for complete system, see Figure 3.2 which shows the connections to the
Indicating transmitters and to steam washing. Figure 3.3 has information of all con­nections to the Divert control unit.

Figure 3.2 Transmier wiring cables and connecons

3.2.1 Relays

Relay 1 NORMAL/DIVERT information
Relay 2 NORMAL/DIVERT information
Relay 3 SOLIDS WARNING: when one of the refractometers goes lower than the

solids warning limit, typically 60% or higher. See Section 5.6.1.

Relay 4 SOLIDS ALARM: when one of the refractometers goes lower than the solids

alarm limit, typically 58% or higher. See Section 5.6.2.

Relay 5 Refractometer signal difference warning: when the refractometerreadings

have more than 2% difference in concentration. See Section 5.5.
Relay 6 Horn relay: connection to the audible alarm. See Section 7.5.
Relay 7 Header wash key information. See Section 3.3.3.
Relay 8 Refractometer A malfunction information. See Sections 6.2 and 7.4.
Relay 9 Refractometer B malfunction information. See Sections 6.2 and 7.4.
Relay 10 Information on if refractometer A is active in the Divert Control System or

dropped off.
Relay 11 Information on if refractomter B is active in the Divert Control System or

dropped off.

9

Figure 3.3 Divert control unit internal wiring

10

3.3 Switch inputs

3.3.1 External Divert switch/push buon - input J8

An external divert switch can be connected to the DD-23 Divert Control Unit, input J8.
If the external divert switch is not used, a jumper has to be connected across J8. The
unit is delivered with this jumper connected.

3.3.2 External divert reset buon - input J9

If you want to use external Divert reset button, it can be connected max. 200 m (600 ft)
from the DD-23 Divert control unit. Use normal instrument cable 2x0.5 (AWG 20) and
connect cable to DD-23 motherboard input J9.
You must make sure both refractometers A and B are working OK before starting to
use the remote divert button (the remote interface can be used to check on the refrac­tometers, see Chapter 8).

The external reset button connection is normally open (NO).

3.3.3 Header wash key - input J10

Black liquor is injected to the recovery boiler through liquor guns. Occassionally the
header ring needs washing and during that procedure the divert system has to be
by-passed and the liquor guns have to be removed from the furnace. The Digital Divert
Control System DD-23 allows for a safe override of divert logic during header ring
wash.

The override is mounted by connecting the gun micro switches in series to the Header
wash/override key switch input J10, see Figure 3.5.

The Header wash key may be used without the external switch information if a jumper
(dotted line in Figure 3.5) is placed to swith input J10. If the input is left open, the key
does not have any effect.

11

DD-23

Operator panel

OVERRIDE
HEADER WASH

HEADER
WASH
KEY

MICROSWITCH
on each liquor gun or
on liquor gun door

Recovery

boiler

Guns out microswitches

HEADER
WASH
KEY

SWITCH INPUT
J10

Figure 3.4 Header wash key funconality

Figure 3.5 Header wash key connecons

12

Ethernet output

3.4 Remote ethernet connecon

The Ethernet connection for the remote interface and data logging purposes is located
inside the Divert control unit on the right side of the processor unit. It is marked

Ethernet output.

Figure 3.6 Ethernet connecon

4 Startup

4.1 Divert system pre-startup checklist

1. SDI Isolation valves mounted correctly

a. Vertical pipe; MTG453
b. Horizontal pipe; MTG471

2. DD-23 control unit installed; DIM243, Figure 9.1 on page 37

3. Pressure reducing valve, solenoid valve, steam trap installed and connected to the
prism wash nozzle on each sensor

a. Steam pipes for black liquor; MTG470
b. Nozzle; MTG482

4. 9–15 bar (130–220 psi) steam connected to the solenoid valve on each sensor

5. Instrumentation air 4–6 bar (60–90 psi) connect to the solenoid valve on each
sensor

13

6. Power supply (230/110Vac/24Vdc) connected; SYS358/Figure 3.1 on page 7, and
WRG366, Figure 3.1 on page 7

a. Transmitter A
b. Transmitter B
c. Divert control unit
d. Solenoid valve A
e. Solenoid valve B

7. Cables connected; SYS358/Figure 3.1 on page 7, WRG366, Figure 3.1 on page 7

a. Transmitter A to sensor A
b. Transmitter B to sensor B
c. Transmitter A to solenoid valve A
d. Transmitter B to solenoid valve B
e. Relay information from the Divert control unit to your control system or the

Divert valve
f. Transmitter A mA output to your control system
g. Transmitter B mA output to your control system
h. Ethernet to your control system (optional)

14

4.2 Divert control unit DD-23 startup

Forthe refractometer startup, consult Chapter 5 in the separate Process refractometer
PR-23 manual.

1. Check the wiring and supply voltage.
Before the power is switched on, the divert output relay ’normal operation’ is in
divert position.

2. Connect the mains power to start the system.
There are no power switches in the instruments. They are always On when the
mains power is connected.

3. While the Control unit is powering up, the DIVERT and SOLIDS ALARM lights are both
blinking. When the unit is fully functional, it is in the divert mode: the DIVERT light
is on and the SOLIDS ALARM light is blinking.

4. Press the LIGHT TEST button on the Divert control unit. All 12 lights should switch
on.

5. Reset the solids alarm by pressing the ALARM RESET button.
The indicator stops blinking and should stay on.

6. Each indicating transmitter should now state refractometer letter, either a or b, in
the upper left corner of the transmitter display. If there’s a question mark instead
of a letter on either of the transmitters, see Chapter 6.
If the process pipe is full, the message for each refractometer should be NORMAL

OPERATION; if process pipe is still empty, message will be NO SAMPLE.

Now activate refractometer A into the Divert by pushing the button A IN OPERATION
on the Divert control unit panel. The button lights up and on the transmitter dis­play the refractometer letter changes to capital A. Then activate refractometer B
similarly by pushing the button B IN OPERATION.
If the green IN OPERATION light blinks, the refractometer in question is perform-
ing wash. The refractometer will automatically come into operation after it has
󰅮inished washing.

7. Now the Divert control system DD-23 is set for normal monitoring operation.

8. When black liquor is in the line, check that the prism wash is working for each
refractometer. First press soft key MENU on the transmitter keyboard, then choose

3 SYSTEM STATUS to get to the system status display. Now press soft key WASH to

initiate manual wash; follow the optical image and check that it changes during
the steam wash. If wash was successful, wait until message is NORMAL OPERATION
and then proceed with startup. If wash doesn’t seem to work, see Chapter 6.

9. If the three green lights on the third row are all on and all conditions for safe boiler
operation are satis󰅮ied, turn off diversion by pressing the DIVERT RESET button. All
warning lights are now turned off and only the 3 green lights are on.

5 Configuraon

CALIBRATION
LOCK

CALIBRATION
LOCK

The K-Patents Divert control system is shipped fully calibrated by the manufacturer.
This chapter contains instructions on how to make 󰅮ine adjustments of the system.

5.1 Calibraon lock

Parameter changes are possible only when the calibration lock is open. The calibra­tion lock can be closed by a switch inside the control unit cover (see Figure 5.1). When
the lock is open, a red led is illuminated next to the lock switch. For safety reasons,
keep the calibration lock open only during parameter changes, done through the web
interface (see Chapter 8).

15

Figure 5.1 Locaon of the calibraon lock

16

5.2 Divert decision rules

Two refractometers in operation:

BLRBAC states the following: For the solids measurements, two refractometers in se­ries must be used. When both refractometers are in service, the requirement for an au­tomatic black liquor diversion can be satis󰅳ied by either of the following options:

1. If either refractometer reads dissolved solids content 58% (default) or below,

an automatic black liquor diversion must take place.

2. When both refractometers read dissolved solids content 58% (default) or be-

low, an automatic black liquor diversion must take place.

Either option is satisfactory.

The rules are listed in decreasing order of security. Only rule 1 satis󰅮ies the high safety
requirements set by BLRBAC, August, 1982. On the other hand, the probability of false
trips decreases with decreasing safety. It means that if false trips are too frequent, the
rule 2 may be preferred at the cost of safety. The rule 2 has later been accepted by
BLRBAC.

The divert decision rule is selected by the rule switch inside the divert control unit
cover (Figure 5.1). The state of the switch is indicated by a yellow indicator LED for
rule #2 and a green one for rule #1.

Rule switch Rule

1-of-2 Rule #1

2-of-2 Rule #2

Table 5.1 Divert decision rule selecon.

The logical description of the safety decision logics is given Tables 5.3 and 5.2 below.

A

under 58% over 58%

B

B

under 58% divert divert

over 58% divert safe

Table 5.2 Two instruments in operaon, rule 1-of-2

A

under 58% over 58%

under 58% divert unsafe

over 58% unsafe safe

Table 5.3 Two instruments in operaon, rule 2-of-2

Only one refractometer in operation:

When only one instrument is in operation the divert action takes place if this instru­ment reads 58 % or below. The rule selection has no in󰅮luence on the divert decision
in this case.

A or B

under 58% unsafe

over 58% safe

Table 5.4 Operaon logic when only one instrument operang

No refractometer in operation:

If both instruments are out of operation (due to malfunction or maintenance), then
according to BLRBAC divert action must take place.

Emergency divert

In all cases the system may be set to DIVERT by pressing the EMERGENCY DIVERT button
(or an external emergency divert button, see Section 2.3.8).

17

5.3 Refractometer concentraon measurement

For refractometer calibration consult also Chapter 6 in the separate Process refrac­tometer PR-23 Instruction manual.

The CONC% displays of the two indicating transmitters have to show the same value
within 0.5 %. If there is a difference, this can be eliminated by adjusting the bias for
one of the refractomers; comparison with sample determination can decide which
one should be corrected.
In the PR-23 refractometer system, bias is the parameter F00, the third parameter in
the 󰅮ield adjustment parameter list. To change it, 󰅮irst press the MENU soft key, then

5 CALIBRATION, then 1 CHEMICAL & FIELD PARAMETERSand then 2 FIELD CALIBRATION PARA­METERS. Choose 3 F00 (BIAS) to change the bias (see Section 6.2.5 in the PR-23 manual).

If the Indicating transmitter A displays 68.2% and B displays 68.8%, the difference can
be eliminated by lowering B by 0.6%. This is done by setting the 󰅮ield calibration
parameter F00 to -0.6 in Indicating transmitter B.

Due to its digital measurement principle, the readings of the K-Patents Process refrac­tometer do not drift by time. Frequent recalibrations based on of󰅮line moisture analy­sis must be avoided, as they will introduce random 󰅮luctuations to the refractometer
readings.

18

5.4 Refractometer acvaon for divert control

When a refractometeris activated for Divert control, the upper left corner of the trans­mitter display shows alternatively A, a, B, b or ?. If the corner is blank, the instrument
is not suitable for divert operation.

Transmier A, in

Divert operaon

Figure 5.2 Indicang transmiers (STR) acvated to Divert control

The decision to display A (a) or alternatively B (b) depends on the IP address settings
in the transmitter. The IP address of instrument A is 172.16.23.2 and that of instru­ment B is 172.16.23.3. These addresses have been set in the factory and should not be
changed. (See Chapter 8 for information on system IP address and connecting to the
DD-23 system.)
If a question mark appears on the transmitter display, the reason is usually that the
Ethernet cable between the transmitter and the Control unit is not properly connected
or the Divertcontrol unit is not powered on. Reconnect (or replace cable, if necessary)
to 󰅮ix.

The refractometer program version has to be 3.00 or higher to have divert system
functionality. Divert version 2.01 or higher requires DTR software version 4.12 or
higher. Also, the refractometer has to have the correct software parameters to be used
in a divert control system. In order to convert a stand-alone refractometer into one
used on the Divert control system, please contact K-Patents. The easiest way to check
if a refractometer is con󰅮igured for DD-23 use is to look at the main display. If the

?/a/A/b/B letter is present (see Figure 5.2), the instrument may be used in the Divert

control system.

If a DD-23 activated transmitter is used in another type of application, the divert func­tion has to be deactivated by K-Patents.

Transmier B, not

in Divert operaon

Ethernet connecon failure

5.5 Signal difference alarm

According to BLRBAC, if a difference of 2% in solids (absolute value) or greater exists
between refractometer readings, an alarm shall be activated.

The alarm limit of 2% is the maximum difference. The limit can be changed into a
smaller number through the remote interface, see Chapter 8.

5.6 Low alarms

5.6.1 Solids warning

If the concentration reading of either refractometer falls below this limit (60% by de­fault), the warning is activated. The limit can be changed through the remoteinterface,
see Section 8.2.5.
Minimum low warning level is 60% according to BLRBAC.

5.6.2 Solids alarm

If the concentration reading of either refractometer falls below this limit (58% by de­fault), the alarm is activated. The limit can be changed through the remote interface,
see Chapter 8.
Minimum low alarm level is 58% according to BLRBAC.

5.7 Refractometer malfuncon alarm

The built-in intelligent diagnostics of a K-Patents Process refractometer provide a
tight control of the operation. A full test cycle is completed with an interval of less than
one second. For details consult the Process refractometer PR-23 instruction manual.

19

Not all malfunctions cause the instrument to be removed from the Divert control sys­tem. However, all malfunction alarms need to be checked, see Section 6.2 for more
information.

5.8 Prism wash

Even though the sensors are equipped with a steam wash facility, it is not necessarily
needed. For K-Patents Process Refractometer, the need of prism wash is reduced and
even in some cases eliminated.

However, an automatic regular prism wash provides an ef󰅮icient check that the re­fractometer reacts. A steam wash of 3 seconds every half hour should be suf󰅮icient.
Only one instrument is washing at a time, and during the wash the system acts in the
single-instrument mode.

To change wash times or relay con󰅮igurations, consult the PR-23 process refractome­ter system manual, sections 6.1.3. Con󰅳iguring relays and 6.3.1. Setting prism wash
parameters.

20

The recommended wash pressures and times are given in the table below..

Wash parameters for Safe-Drive™ Isolaon valve nozzle SDI

Minimum above

process pressure

Steam (SN) 5 bar (70 psi) 8 bar (115 psi) 3–5 s 20–30 s 20–30 min

Maximum above

process pressure

Wash

me

Reco-

very

Do not exceed the recommended wash times, because some process media may burn
to the prism surface if steamed for longer time. In case of coating, shorten the wash
interval.

It should be noted that if wash check is enabled on the instrument it can cause the
instrument to be taken out of divert use if during the set wash tolerance time no wash
cycles have been noted as successful. This can cause a divert if both instruments fail
wash checks in sequence.

Interval

6 Regular maintenance and troubleshoong

As the Divert control system is a pure digital system, no special maintenance is needed.
The LIGHT TEST button on the operator panel (Figure 2.1) sends a signal to the micro­processor, and the microprocessor switches all 12 LED lights on as long as the button
is pressed. This way not only the lights but also the processing system is checked.

To assist the identi󰅮ication of a faulty component, the information 󰅮low is given in Sec­tion 6.1. Also the logic diagrams of Chapter 7 may be of help.

6.1 Informaon flow

The divert control unit is connected to the refractometers through an Ethernet con­nection. The Control system asks for the measurement data from the instruments
several times each second. Based on the data received the divert operation decisions
are made.

Each refractometer performs its measurement functions independently. The instru­ments also have their own internal diagnostics, which are used in the divert decision
logic, as well (see Section 6.2).

21

As the Divert Control System requests information several times a second, all commu­nication problems are found immediately. In case one of the refractometers does not
respond to the control unit, the non-responding instrument is dropped from opera­tion and the malfunction alarm is set.

An important information when troubleshooting communication problems is the let­ter on the upper left corner of each refractometer (see Figure 5.2). If the instrument
has not received any data requests from the DivertControl Unit during the last second,
the letter turns into a question mark (?). If the letter is a/A/b/B, then the communica­tion link between the Divert control unit and the instrument is fully functional.

6.2 Malfuncons

If the Divert Control Unit cannot communicate with a refractometer, or if the inter­nal diagnostics of a refractometer indicate a measurement problem, the Malfunction
indicator (see Figure 2.1) is illuminated and the corresponding relay 8 or 9 (see Fig­ure 3.3) is activated.

The diagnostic message of the refractometer can be seen on the transmitter screen
(see Figure 5.1). Some of these messages, e.g. PRISM WASH, are only informative and
do not indicate a measurement problem. Table 6.1 below summarizes all diagnostic
messages and their effect on the Divert control system operation.

22

If the malfunction is severe enough to make the measurement result unreliable,
the refractometer cannot be used in making the divert decision. In that case the

instrument is dropped from the Divert Control System, and cannot be taken on-line
manually until the problem is 󰅮ixed.

For more information on possible causes of each error, see the PR-23 instruction man­ual, Chapter 8.

Message Instrument will be

dropped from the

Divert Control System

EXTERNAL HOLD

EXTERNAL WASH STOP

HIGH SENSOR HUMIDITY

HIGH SENSOR TEMP

HIGH TRANSMITTER TEMP

LOW IMAGE QUALITY X

LOW TEMP WASH STOP

LOW TRANSMITTER VOLT

NO OPTICAL IMAGE X

NO SAMPLE X

NO SAMPLE/WASH STOP

NO SENSOR X

NO SENSOR SIGNAL X

NORMAL OPERATION

OUTSIDE LIGHT ERROR X

OUTSIDE LIGHT TO PRISM X

PRECONDITIONING

PRISM COATED X

PRISM WASH

PWASHFAIL X

PWASHWARN

RECOVERING

SHORT-CIRCUIT X

STARTING UP... X

TEMP MEASUREMENT FAULT X

Table 6.1 Diagnosc messages and their effect on Divert operaon

6.3 Diagnosc tools

In order to make troubleshooting easier, there are several built-in diagnostic tools.

An event log is built in the system. A short log showing last 6 events can be accessed
from the transmitter main display by pressing the soft key DD23. A more complete
event log can be found in the web-based remote interface (see Section 8.2.4).

Figure 6.1 Transmier log page for instrument A

The remote interface also provides a diagnostic page which gives full information on
the system state (concentrations, relay state, switch state, indicator state), see Sec­tion 8.2.3.

23

6.4 Troubleshoong

6.4.1 A queson mark (?) on the refractometer display

Cause: The refractometer does not receive information request packets from the Di­vert Control Unit. This may be caused by a faulty cable, faulty parameters, or equip­ment malfunction either in the refractometer or in the Divert Control Unit.

Action: If the instrument has never been functional, or if it is possible someone has
changed the instrument parameters, there may be a con󰅮iguration problem with the
IP addresses. The IP address in the refractometer should be set as givenin Section 5.4.
If possible, cross-check the addresses from the diagnostic web page.

A physicalproblem can be ruled out by looking at a small LED close to the transmitter’s
Ethernet connector. If the LED is green, the cable is ok. One way to isolate the problem
is to swap the cables between the refractometers. A standard Ethernet cable can be
used as a troubleshooting aid (either straight-through or cross-over).

6.4.2 A refractometer refuses to come on-line

Cause: Either there is no communication to the refractometer or there is a malfunc­tion on the refractometer. It is also possible the transmitter is not con󰅮igured for Divert
use.

24

Action: Check that there is a/A/b/B on the refractometer display. If there is a question
mark (?) instead, see above.

Check that there is a soft key DD23 on the refractometer main display (see Figure 6.2
below). If the soft key is not present in the main display, the instrument is not con󰅮ig­ured for Divert use. If this is the case, please contact K-Patents.

In other cases, check the diagnostic message on the refractometer screen (see Sec­tion 6.2).

Figure 6.2 Transmier main display, instrument in Divert use

6.4.3 No lights come up in the Divert Control Unit

Cause: There is no power on the instrument or there is a hardware fault.

Action: Check that the instrument receives power. In normal operation several relays

have their associated LEDs lit. If there are any LEDs lit in the Divert Control Unit, the
unit receives power.

6.4.4 All lights are blinking

Cause: There is an unrecoverable hardware fault in the Divert Control Unit.

Action: Please contact K-Patents.

7 Divert control logics

no

no no

no

yes

UNSAFE SOLIDS

SAFE SOLIDS

NO INSTRU-

MENTS!

Rule 2-of-2

2 instruments

available?

1 instrument

available?

Both ≥ 58%?

Either ≥ 58%?

CONC ≥58%?

yes

yesyes

yes

no

Rule 1-of-2?

yes

no

DIVERT

A logical description of the system is provided to complement the operational descrip­tion given in the previous chapters.

7.1 Safety decision logic

The core of the Divert control system is the safety decision logic, which makes the
ultimate decision whether the black liquor can be safely fed to the burner or not.

The logic is described in the 󰅮low diagram in Figure 7.1. The factors affecting the de­cision are the number of instruments in operation (none, one or two) and their mea­surement results. Also the selected divert rule is taken into account when two instru­ments are in operation. For a description of different rules, see Section 5.2.

As a result of this logic, the system is either in SAFE SOLIDS or UNSAFE SOLIDS state.
When the system is in the SAFE SOLIDS state, the SAFE SOLIDS light is illuminated.

25

"One instrument available" may mean that only one instrument is in operation or that
both instruments are in operation, but one of them is washing when queried.

Figure 7.1 Safe solids decision logic

26

NO DIVERT

DIVERT

HEADER WASH

active?

Divert from

safe solids logic?

EMERGENCY

DIVERT

pressed?

DIVERT RESET

pressed?

yes

no

yes

no

yes

no

no

yes

7.2 Divert decision logic

After the system has evaluated the solid contents to be either safe or unsafe (see Sec­tion 7.1), it decides whether the the system should be in the DIVERT state. This deci­sion is made according to the 󰅮low diagram in Figure 7.2.

The defaultstate of the system is the DIVERT state. It can be changed to the NO DIVERT
state only by manually pressing the DIVERT RESET push-button when the solid content
is suf󰅮icient (SAFE SOLIDS). If the solid content drops to UNSAFE, the system drops
into the DIVERT state.

The only exception to this is when the HEADER WASH is active. In that case the solid
content checking is skipped. The system may then be switched between the DIVERT
and NO DIVERT states by using the EMERGENCY DIVERT and DIVERT RESET push buttons
in the operator panel (or the equivalent external emergency divert and divert reset
buttons).

The system will drop to the DIVERT state in all cases when the EMERGENCY DIVERT
button (or its external counterpart) is pressed.

Figure 7.2 The divert decision logics

7.3 In operaon logic

IN OPERATION
button pressed

yes

yes

yes

yes

no

no

wash done

no

no

no

Only

instrument?

Washing?

IN OPER.
pressed?

Critical

malfunction?

WAIT

(LIGHT BLINKING)

IN OPERATION

(LIGHT ON, RELAYS

10, 11 ACTIVE)

Critical

malfunction?

NOT IN OPERATION

(LIGHT OFF)

yes

Whether an instrument is in op­eration depends on the opera­tor’s commands and the instru­ment’s diagnostics. The decision
is carried out as outlined in Fig­ure 7.3

An instrument can be in one of
three different states: IN OPER­ATION, NOT IN OPERATION, and
WAIT. When the instrument is IN
OPERATION, it is used in decid­ing whether the solid content is
in the safe level (see Section 7.1).
When the instrument is NOT IN
OPERATION or WAIT states, it is
not used.

27

The WAIT state occurs when the
operator has requested the in­strument to come into operation
by pressing the button, but the
instrument is in the wash cycle
and will come into operation af­ter the wash cycle is completed.

The actual state can be seen from
the IN OPERATION light. If the light
is on, the instrument is IN OPER­ATION. If the light is off, the in­strument is NOT IN OPERATION,
and if the light is blinking it is in
the WAIT state.

The default state of an instru­ment is to be NOT IN OPERA­TION. It can be taken into op­eration by pressing the IN OP-

ERATION button unless there is

a critical malfunction (see Sec­tion 6.2).

Figure 7.3 Operaon logic

An instrument automatically drops
into NOT IN OPERATION if there
is a critical malfunction. It may also be dropped by the IN OPERATION button unless it
is the only instrument used.

28

Timeout from

instrument?

Malfunction in

instrument?

no

yes

yes

yes

no

no

Critical malfunc-

tion in instr.?

NO

MALFUNCTION

Remove instr.

from Divert use

MALFUNCTION

7.4 Malfuncon logic

The MALFUNCTION light is illumi­nated when the internal diagnos­tics of either of the two instru­ments indicates a malfunction or
there is a communication timeout
to either of the instruments (Fig­ure 7.4).

It should be noted that not all mal­functions are critical malfunctions
which drop the instrument from
operation (see Section 7.3). For a
complete list of possible malfunc­tions, see Section 6.2.

The MALFUNCTION light re󰅮lects the
decision taken by this logic. How­ever, as the MALFUNCTION light is
one of the resettable alarms, it
may be blinking even when the
malfunction itself is cleared if the

ALARM RESET button has not been

pressed (see Section 7.5).

Figure 7.4 Malfuncon logic (repeated for each sensor)

UNACKNOWLEDGED

ALARM

(Blinking, Relay 6 active)

ALARM

(Light on, Relay 6 inactive)

Alarm source active?

ALARM RESET

pressed?

Alarm source active?

yes

no

no

no

yes

yes

NO ALARM

(Light off, Relay 6 inactive)

29

7.5 Reseable alarm logic

In order to identify new alarms, there
is a resettable alarm logic in the Di­vert control unit. There are four pos­sible alarm sources: SOLIDS ALARM,
SOLIDS WARNING, A&B DIFFERENCE,
and MALFUNCTION. All of these fol­low the same alarm reset rules (see
Figure 7.5).

When a new (unacknowledged) alarm
activates,the corresponding light starts
blinking in the operator panel, and re­lay 6 is activated. When the ALARM RE-

SET button is pressed, relay 6 is inacti-

vated.

The state of the alarm indicator in the
operator panel depends on whether
the cause for the alarm is still present.
If the cause has cleared (e.g. solids
content has risen above the warn­ing limit), the light goes off when
the ALARM RESET is pressed. If the
cause has not cleared, the light will be
steadily illuminated.

A non-illuminated light means there
is no alarm. A steadily illuminated
alarm light means there is a problem
which persists but the problem has
been acknowledged by pressing the

ALARM RESET. A blinking light means

the problem has not been acknowl­edged, but gives no information whether
the problem is still there or not.

Figure 7.5 The reseable alarm logic

30

no REFRACTO-

METER

DIFFERENCE

|A-B| > 2%?

2 instruments

available?

yes

no

no

yes

REFRACTO-

METER

DIFFERENCE

7.6 Refractometer difference logic

If there are two refractometers in operation (taken into operation, not washing), the
Control unit monitors the difference in reading between the two instruments (󰅮ig­ure 7.6). If the difference is more than 2%, a refractometer difference warning is given
with the corresponding front panel indicator and relay.

The divert decision logic (section 7.2) is not affected by the refractometer difference,
but a signi󰅮icant difference between the two instruments indicates one of the instru­ments is not measuring reliably. In this case the instruments and wash systems have
to be checked immediately. Ignoring to do this may result in an erroneous divert de­cision.

Figure 7.6 Refractometer difference logic

7.7 Wash arbitraon logic

no

WAIT

WASH

IDLE

The other

instrument

washing?

yes

wash interval
elapsed

wash done

the other instrument
done washing

The Divert Control Unit takes care that if there are two instruments in operation, they
won’twash at the same time (as that would trip the system). This is done by the simple
logic described in Figure 7.7

Each instrument control their own wash cycle. Before the start washing, they request
a wash permission from the Divert Control Unit. If the other instrument is already
washing, the unit does not grant this permission until the wash cycle is completed.

31

Figure 7.7 Wash arbitraon logic

32

Wash check?

Wash tolerance

time > 0?

no

yes

yes

off

yes

on

no

Prism wash

succesful?

Drop from

Divert use

Malfunction

Succesful wash
within tolerance

time?

Prism wash failure

Prism wash

warning

no

Normal operation

One wash cycle

7.8 Wash check logic

By default the wash tolerance time is 0.

Figure 7.8 Wash check logic

8 Remote control interface

The remote interface is based on a web server inside the Divert Control Unit. It con­sists of several web pages, easily accessible through the links on the navigation bar in
the left (see Figure 8.1).
The remote interface is optimized for the Firefox browser, version 2.0 or newer, al­though it may work with other browsers. Firefox is free and exists for Windows, Mac
OS X and Linux, it can be downloaded through http://www.mozilla.com/.

8.1 Divert Control Unit IP address

The Divert Control Unit can be reached through two different IP addresses. In
non-networked applications (only a DD-23 and a single computer) the IP address is

169.254.23.23. This IP address is factory set and cannot be changed. If the Divert Con­trol Unit is to be connected to a network, the network settings can be changed through
the parameter page of the remote interface (see Section 8.2.5).

8.2 The remote interface

33

8.2.1 Main page

The remote indicator main page gives a quick overview over system status.

Figure 8.1 DD-23 Remote control, main page

34

8.2.2 Instrument pages

The pages for instrument A and instrument B are normal transmitter homepages. See
the PR-23 instruction manual, Chapter 12, for more information.

By default, the instrument pages open in a new tab in your browser; the DD-23 page
you started from will stay open in the original tab.

8.2.3 Diagnoscs page

The diagnostics page gives a full account on instrument settings and the instrument’s
status at the moment, including information about relays, switches, pushbuttons, etc.

Figure 8.2 Remote diagnoscs page

8.2.4 Log page

The log page gives a more extensive, printable log of events.

Figure 8.3 Remote log page

35

36

8.2.5 Parameters page

The Divert Control Unit parameters can only be changed through the parameter page.
However, note that the calibration lock (see Section 5.1) has to be open (off) before
parameters can be changed. If calibration lock is on, parameter changes are not pos­sible. The calibration lock status is given on top of the parameter page and if the lock
is on, i.e. changes are not permitted, the Submit button is missing.

Figure 8.4 Parameter page

8.3 Data logging

K-Patents provides free of chargea data logging software called K-Patents Toolkit (or
PR-11111). Divert logging functionality was introduced in Toolkit version 2.20. If you
have an earlier version of the Toolkit, please contact your K-Patents representative for
a version that is compatible with DD-23.

9 DD-23 specificaons

9.1 Divert Control Unit specificaons

Model: DD-23
Enclosure: IP66 Nema 4X, dimensions 226 x 267 mm (8.91 x 10.5 in)
Supply: 86–240 V AC, 20 VA, 50-60 Hz
Ambient temperature: max 45C(113F)
Accessory: Roofed stainless steel mounting plate for the Divert Control

Unit and 2 Indicating transmitters, Figure 9.1

Material: AISI 316, dimensions 916 x 488 mm x 250 mm

(36 x 19.2 x 10 in)

Relays 1-11: 3A, 250V NO/NC

37

Figure 9.1 Divert Control Unit mounng plate: Dimensions (mm/in)

Figure 9.2 Divert control unit and Indicang transmier closures: Dimensions (mm/in)

38

7

1

4

2

3

5

6

9

8

9.2 Divert control unit spare parts

Figure 9.3 Divert Control Unit spare parts

No. Part name Spare part no.

1 DD-23 front panel PR-12100

2 Nikkai LB-15WK switch PR-12101

3 Nikkai SK-12AA key switch PR-12102

4 PR-12020 card PR-12020

5 Moxa switch EDS-205 PR-12103

6 Connector card PR-12010 PR-12010

7 Moxa US-7110-LX processor PR-12104

8 WRA24SX-U power supply PR-10810

9 Enclosure PR-7602

DD-23 motherboard–keyboard cable PR-12105

DD-23 motherboard–Moxa cable PR-12106

10 Oponal Remote Divert Terminal DD-23-RT

The Remote Divert Terminal DD-23-RT is an optional extension to the normal DD-23
remote (web) interface. The system consists of a terminal with a touch screen for
navigating the remote interface menus and under the display buttons for the Divert
and Divert Reset operations.

10.1 Mounng instrucons

The DD-23-RT panel is compatible with VESA 100 wall mounts and swivel arms. It
can also be mounted in a rack or a table stand. An optional table stand is available
from K-Patents.

39

Figure 10.1 DD-23-RT display dimensions

Figure 10.2 DD-23-RT with K-Patents Table stand.

40

Figure 10.3 Connecng DD-23-RT

41

Figure 10.4 Wiring DD-23-RT

42

Panel front

Power

0

1

10.2 Startup and use

Connect wires and cables according to Figure 10.4. In the Divert Control Unit the Re­mote Panel is connected to the Ethernet output, see Figure 3.6 on page 12. The In­dicating transmitters (STRs) and the Divert Control Unit can stay powered on all the
time. The remote panel can also be connected to a factory network.

Switch on remote panel power. The power switch is located at the bottom of the
PR-23-RT panel.

Figure 10.5 Locang the power buon

The remote panel is a touch screen, tap the screen to operate. For remote interface
use, please see Chapter 8, “Remote control interface”.

10.3 Troubleshoong

Contact your nearest K-Patents representative, see http://www.kpatents.com/contacts.php,
or contact K-Patents, Inc, US phone [phone], or the K-Patents headquarters,
phone [phone].

A Index

43

A
A IN OPERATION 4
ALARM RESET 4
A&B DIFFERENCE 5
alarm

see horn relay
logic 29
refractometer malfuncon 19
reset 4
signal difference 18
solids alarm 19
solids warning 19

B
B IN OPERATION 4
BLRBAC 3, 6, 16–19
buon

ALARM RESET 4–5, 14
DIVERT RESET 4, 14
EMERGENCY DIVERT 4, 6
external emergency divert 6
LIGHT TEST 4–5

C
calibraon lock 15, 36
coang

see prism coang

D
DD-23-RT 39
DIVERT 5
DIVERT RESET 4
Divert Control System 1

mounng 7
overview 3
parts 1

Divert Control Unit 3

IP address 33
mounng 37
spare parts 39
specificaons 39
wiring 9

diagnosc

message 21
tools 23

web page 34
disposal 1
divert decision logic 26
divert reset

external 10
divert rule

decision 16

switch 15

E
EMERGENCY DIVERT 4, 26
ethernet connecon 12
event log 23

saving 36
web page 35

external

divert reset buon 10
emergency divert buon 6, 10

H
HEADER WASH 4
header wash key 4, 6

mounng 10

horn relay 8

I
Indicang transmier 6

IP address 18
wiring 8

IP address

Divert Control Unit 33

Indicang transmier 18
indicator light 4
input

see switch input
instrument web page 34

J
J9, J10, J11

see switch input

K
key

see header wash key

L
LIGHT TEST 4
light

A IN OPERATION 4

A&B DIFFERENCE 5

B IN OPERATION 4

blinking DIVERT 14

blinking SOLIDS ALARM 14

blinking, all 24

DIVERT 5

green 5

MALFUNCTION 5

OVERRIDE 5

red 5

44

SAFE SOLIDS 5
SOLIDS WARNING 5
yellow 5

logic

alarms 29
divert decision 26
in divert operaon 27
malfuncon 28
prism wash 31
refractometer difference 30
safe solids 25
safety decision 16, 25

M
MALFUNCTION 5
malfuncon 21

light 5
logic 28

message

NO SAMPLE 14

NORMAL OPERATION 14
messages 22
mounng

Divert Control System 7

Divert Control Unit 37

external Divert reset buon 10

external emergency divert 10

header wash key 10

prism wash 7

N
NO SAMPLE 14
NORMAL OPERATION 14
network sengs 33

O
OVERRIDE 5
one-of-two 16
operator panel 4

P
panel

see operator panel
parameters

Divert Control System 36

prism wash 19

web page 36
prism coang 20
prism wash 6, 19

arbitraon logic 31

mounng 7

steam pressure 20

mes 20
push buon 4

Q
queson mark 23

R
Remote Divert Terminal DD-23-RT 39
refractometer

bias 17
difference logic 30
malfuncon alarm 19

relay

wiring 10

remote

diagnoscs page 34
ethernet connecon 12
instrument page 34
interface 33
log page 35
parameters page 36
terminal DD-23-RT 39

reset

alarm 4
divert 4

ring header wash

see header wash key

rule

1-of-2 16
2-of-2 16

S
SAFE SOLIDS 5
SOLIDS ALARM 5
SOLIDS WARNING 5
safety decision logic 16, 25
sengs

network 33
signal difference alarm 18
solids alarm 19
solids warning 19
spare parts

Divert Control Unit 39
startup

Divert control unit 14

refractometer 14
steam trap 7
steam wash

see prism wash
switch

divert decision rule 16

1-of-2 16

2-of-2 16
switch input 6, 10

T
tesng

45

Divert Control Unit 21
lights 21

transmier

see Indicang transmier

two-of-two 16

W
warning

see solids warning

warranty 1
wash

see prism wash
web pages 33
web server 33
wiring

Divert control unit 9

Indicang transmier 8

relay 10

PROCESS INSTRUMENTS

K-Patents Oy

P.O. Box 77
fi-01511 Vantaa, Finland
tel. [phone]
fax [phone]
[e-mail]

K-Patents, Inc.

1804 Centre Point Circle, Suite 106
Naperville, IL 60653, USA
tel. [phone]
fax [phone]
[e-mail]

K-Patents (Shanghai) Co., Ltd

17-05H, 17F, Times Square, No.500
Zhang Yang Road
Pudong District, Shanghai, China
tel. [phone]
fax [phone]

www.kpatents.com