BT1050
OK
BT1050
Boiler Blowdown Timer
Installation and Maintenance Instructions
1. Safety information
2. User instructions and
delivery information
3. System overview
4. Mechanical
installation
5. Electrical
installation
6. Commissioning
- Quick set-up
- Full
7. Communications
8. Maintenance
9. Fault nding
10. Technical
information
- Default settings
11. Appendix
- Summary of the
Modbus protocol
12. Menu map
IM-P405-39
AB Issue 4
4058152/4
© Copyrigh t 2013
Printed in G B
IM-P405-39 AB Issue 4
Commissioning password
Current legislation states that in order to prevent tampering and potentially
hazardous programming errors, access to the pass codes required to enter
commissioning mode should only be available to qualified and trained
personnel.
Enter commissioning
This is done from the run mode by pressing and ho lding down the OK butt on
for 5 seconds.
The run mode di splay will disap pear and the display
will show 'PASS CO DE' with '8 888' at the bottom
right corner of the scree n. The flashing leading digit
indicates the position of the cursor. The default,
or factor y set pass code i s 7452 but this can be
changed from within the commissioning mode. The
pass code can be entered by using t he and
buttons to increase or decrease the f lashing value
and the and buttons to move the cursor.
Pressing the OK button will enter the pass c ode. If an
incorrec t pass code is used, the display au tomatically
returns to the r un mode.
This page MUST be removed
after commissioning
and kept in a safe,
access controlled location.
PASS CODE
8888
IM-P405-39 AB Issue 4
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1. Safety information
Safe oper ation of t his produ ct can onl y be guara nteed if i t is prope rly inst alled,
commiss ioned, us ed and main tained by qualifi ed person nel (see Sec tion 1.11) in
compliance with the operating instructions. General installation and safety instructions
for pipeline and plant construction, as well as the proper use of tools and safety
equipment must also be complied with.
Your attention is drawn to IEE Regulations (BS 7671, EN 12953, EN 12952 and EN 50156).
Elsewhere, other regulations will normally apply.
All wiring materials and methods shall comply with relevant EN and IEC standards
where applicable.
Warning
This produ ct is desi gned and c onstru cted to wi thstan d the forc es encountered
during no rmal use. U se of the pro duct oth er than as a b oiler con trolle r, or failure
to install the product in accordance with these Instructions, product modifications
or repair could:
- Cause injur y or fat ality t o personn el.
- Cause dama ge to the product / pr opert y.
- Invalidat e the marking.
These instructions must be stored in a safe place near the product installation at all
tim es.
Warning
This produ ct compl ies with E lectro magnet ic Compat ibilit y Direc tive 2004 / 108 / EC
and all its requirements.
This product is suitable for Class A Environments (e.g. industrial). A fully det ailed EMC
assessm ent has been made an d has the reference n umber UK Supply BH BT1050 2008.
The product may be exposed to interference above the limits of Heavy Industrial
Immunity if:
- The produc t or its wi ring is lo cated ne ar a radio t ransmit ter.
- Excessive electr ical noi se occurs o n the main s supply. Power lin e protec tors (ac)
should be in stalle d if mains sup ply noise i s likely. Prote ctors ca n combin e
filtering, suppression, surge and spike arrestors.
- Cellular t elephones and mob ile radio s may cause interf erence i f used wit hin
approximately 1 metre (39") of the product or its wiri ng. The act ual separation
distanc e necess ary wil l vary ac cording to t he surroundings of t he insta llation
and the power of th e transm itter.
This product complies with Low Voltage Directive 2006 / 95 / EC by meeting the
standards of:
- EN 61010 -1:2010 Safety requirements for electric al equipment for measurement,
control, and laboratory use.
Static precautions (ESD)
Static p recautions must b e obser ved at all ti mes to avoid da mage to th e produc t.
IM-P405-39 AB Issue 4
IM-P405-39 AB Issue 4
3
Symbols
Equipment protected throughout by double insulation or reinforced
insulation.
Functional earth (ground) terminal, to enable the product to function
correctly.
Not used to provide electrical safety.
Clean earth / ground.
Safety earth.
Caution, risk of electric shock.
Caution, risk of danger, refer to accompanying documentation.
Optically isolated current source or sink.
Caution, Electrostatic Discharge (ESD) sensitive circuit. Do not touch
or handle without proper electrostatic discharge precautions.
ac, alternating current.
IM-P405-39 AB Issue 4
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1.1 Intended use
i) Check that the product is suitable for use with the intended fluid.
ii) Check material suitability, pressure and temperature and their maximum and
minimum values. If the maximum operating limits of the product are lower than
those of the system in which it is being fitted, or if malfunction of the product could
result in a dangerous overpressure or overtemperature occurrence, ensure a
safety device is included in the system to prevent such over-limit situations.
iii) Determine the correct installation situation and direction of fluid flow.
iv) Spirax Sarco products are not intended to withstand external stresses that may be
induced by any system to which they are fitted. It is the responsibility of the installer
to consider these stresses and take adequate precautions to minimise them.
v) Remove protection covers from all connections and protective film from all
name-plates, where appropriate, before installation on steam or other high
temperature applications.
1.2 Access
Ensure safe access and if necessary a safe working platform (suitably guarded)
before attempting to work on the product. Arrange suitable lifting gear if required.
1.3 Lighting
Ensure adequate lighting, particularly where detailed or intricate work is required.
1.4 Hazardous liquids or gases in the pipeline
Consider what is in the pipeline or what may have been in the pipeline at some
previous time. Consider: flammable materials, substances hazardous to health,
extremes of temperature.
1.5 Hazardous environment around the product
Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits), dangerous gases,
extremes of temperature, hot surfaces, fire hazard (e.g. during welding), excessive
noise, moving machinery.
1.6 The system
Consider the effect on the complete system of the work proposed. Will any proposed
action (e.g. closing isolation valves, electrical isolation) put any other part of the
system or any personnel at risk?
Dangers might include isolation of vents or protective devices or the rendering
ineffective of controls or alarms. Ensure isolation valves are turned on and off in a
gradual way to avoid system shocks.
1.7 Pressure systems
Ensure that any pressure is isolated and safely vented to atmospheric pressure.
Consider double isolation (double block and bleed) and the locking or labelling of
closed valves. Do not assume that the system has depressurised even when the
pressure gauge indicates zero.
1.8 Temperature
Allow time for temperature to normalise after isolation to avoid danger of burns.
IM-P405-39 AB Issue 4
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1.9 Tools and consumables
Before starting work ensure that you have suitable tools and / or consumables
available. Use only genuine Spirax Sarco replacement parts.
1.10 Protective clothing
Consider whether you and / or others in the vicinity require any protective clothing
to protect against the hazards of, for example, chemicals, high / low temperature,
radiation, noise, falling objects, and dangers to eyes and face.
1.11 Permits to work
All work must be carried out or be supervised by a suitably competent person.
Installation and operating personnel should be trained in the correct use of the
product according to the Installation and Maintenance Instructions.
Where a formal 'permit to work' system is in force it must be complied with. Where
there is no such system, it is recommended that a responsible person should know
what work is going on and, where necessary, arrange to have an assistant whose
primary responsibility is safety.
Post 'warning notices' if necessary.
1.12 Handling
Manual handling of large and / or heavy products may present a risk of injury. Lifting,
pushing, pulling, carrying or supporting a load by bodily force can cause injury
particularly to the back. You are advised to assess the risks taking into account the
task, the individual, the load and the working environment and use the appropriate
handling method depending on the circumstances of the work being done.
1.13 Residual hazards
In normal use the external surface of the product may be very hot.
Many products are not self-draining. Take due care when dismantling or removing
the product from an installation.
1.14 Freezing
Provision must be made to protect products which are not self-draining against
frost damage in environments where they may be exposed to temperatures below
freezing point.
1.15 Disposal
On disposal of the unit or component, appropriate precautions should be taken in
accordance with Local / National regulations.
Unless otherwise stated in the Installation and Maintenance Instructions this product
is recyclable and no ecological hazard is anticipated with its disposal providing due
care is taken.
1.16 Returning products
Customers and stockists are reminded that under EC Health, Safety and Environment
Law, when returning products to Spirax Sarco they must provide information on any
hazards and the precautions to be taken due to contamination residues or mechanical
damage which may present a health, safety or environmental risk. This information
must be provided in writing including Health and Safety data sheets relating to any
substances identified as hazardous or potentially hazardous.
IM-P405-39 AB Issue 4
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2. User instructions and
delivery information
Certain computer programs contained in this product were developed by Spirax-Sarco
Limited ("the Work(s)").
Copyright © Spirax-Sarco Limited 2013
All rights reserved
Spirax-Sarco Limited grants the legal user of this product (or device) the right to use the
Work(s) solely within the scope of the legitimate operation of the product (or device).
No other right is granted under this licence. In particular and without prejudice to the
generality of the foregoing, the Work(s) may not be used, sold, licensed, transferred,
copied or reproduced in whole or in part or in any manner or form other than as expressly
granted here without the prior written consent of Spirax-Sarco Limited.
2.1 General description
The BT1050 is a timer for the control of a bottom blowdown valve.
It allows a valve at the bottom of the boiler to open, removing precipitated solids that could
otherwise build up, eventually causing damage.
2.2 Front panel
The front panel has an LCD graphics display and five-button keypad:
Scroll down menus
Scroll up menus
Hold down for 5 seconds
to clear the error screen
Graphic display
BT1050
OK
Not used in run mode
Fig. 1 Front panel keypad and definitions
IM-P405-39 AB Issue 4
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The display is divided into four main sections:
- Current time.
- Information line / Date.
- Timer information.
- Recovery time.
Operating parameters are selected using a software menu.
2.4 Information line details (in priority order)
Alarm:
- 'TEST ALM' - the operator is testing the alarm relay. The relay is either energised (OFF) or
de-energised (ON) for 5 minutes. See the commissioning mode TEST-OUTPUT-ALARM
menu.
- 'ALARM' - an error or fault has occurred. See details in the error screen in run mode and
Section 9, 'Fault finding'.
Bottom blowdown valve (BB):
- 'TEST BB' - the operator is testing the blowdown relay. The relay is either energised (ON)
or de-energised (OFF) for 5 minutes. See the commissioning mode TEST-OUTPUT-VALVE
menu.
- 'MAN OFF' - the timer is switched off. e.g. manual override. The timer will ignore all
pre-recorded times. See the commissioning MODE-OFF menu.
- 'MAN OPEN' - the valve has been opened continuously. e.g. manual override. See the
commissioning MODE-ON menu.
-
'DELAYED' - a blowdown is overdue but cannot occur until the RECOVERY TIMER elapses.
- 'BLOWDOWN' - a timed blowdown is occurring. i.e. the valve is open.
Fig. 2 Graphic display
5
Another timer is blowing down
or
Recovery timer:
Indicates the time before
another blowdown can safely
occur, because the blowdown
vessel is still cooling down.
Features only available on
linked BT1000 or BT1050
timers.
Timer information
Which timer is to time-out next:
Timer number
Day
Time
Indicates an error or alarm
2.3 LCD display
Time
Information line / Date
IM-P405-39 AB Issue 4
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2.5 Timers information menu
This menu details the duration, start, repeat and stop time that has been selected. It
also displays which days have been selected. A ' - ' means that day has not been selected.
2.6 Alarm / error display messages
If an error occurs, an exclamation mark (!) will flash in the bottom left corner of the run
display (see Figure 2). The details of the error or alarm will appear on a new message
screen (see Figure 4), which can be accessed by scrolling through the run menu. Pressing
and holding the
OK
button for 3 seconds can clear a message and re-energize the alarm
relay(s). If the cause has not been corrected, the same message will reappear. If the
error or alarm is of a latching type, only the message will disappear. The alarm relay will
remain de-energised until the correct pass code is entered in the commissioning menu.
If more than one error or alarm has occurred, the next message will appear (in priority
order) after the previous one has been cleared. See Section 9, 'Fault Finding'.
If there are any problems with the product, error or alarm will appear. The example shows
a power failure.
Timer 1
duration
5 s
start
08:00
repeat
01:00
stop
16:00
sm-w-fs
Saturday
Friday
Thursday
(not selected)
Sunday
Monday
Tuesd a y
(not selected)
Wednesday
Fig. 3
Fig. 4 Error display
PRESS OK
TO CLEAR
IM-P405-39 AB Issue 4
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2.7 Other features
A test function provides the operator with a diagnostic tool.
The BT1050 can communicate via an Infrared link between adjacent units. It can be designated
as either a slave or a master unit - see Section 7, 'Communications'.
2.8 Equipment delivery, handling and storage
Factory shipment
The product is tested, calibrated and inspected prior to shipment, to ensure reliable
operation.
Receipt of shipment
Each carton should be inspected at the time of delivery for possible external damage. Any
visible damage should be recorded immediately on the carrier's copy of the delivery slip.
Each carton should be unpacked carefully and its contents checked for damage. If it is found
that some items have been damaged or are missing, notify Spirax Sarco immediately and
provide full details. In addition, damage must be reported to the carrier with a request for
their on-site inspection of the damaged item and its shipping carton.
Storage
If the product is to be stored for a period prior to installation, the environmental storage
conditions should be at a temperature between 0°C and 65°C (32°F and 149°F), and between
10% and 90% relative humidity (non-condensing).
Ensure there is no condensation within the unit before installing and connecting the power.
Operator instructions
An alternative operator instruction manual, in place of this manual, for operating the equipment
is required. This will avoid the commissioning menu passcode being disclosed to the operator.
The alarm reset passcode may optionally be disclosed if this is deemed necessary.
IM-P405-39 AB Issue 4
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Installation A
3. System overview
The BT1050 controls the opening and closing of a valve at the bottom of the boiler to
remove precipitated solids that could otherwise build up, eventually causing damage.
Each BT1050 has three timers. Three timer sequences are available. Only one timer
sequence can be allocated to any one day.
The timers are also used to prioritise boiler blowdown cycles. This:
- allows recovery time (for water in a blowdown vessel to cool),
- minimises waste of heat and water,
- selects the most suitable blowdown time (i.e. avoiding peak steam demand times).
Up to nine BT1050 units can be installed and linked for multi-boiler installations, preventing
more than one boiler blowing down at a time. This feature avoids the possibility of overloading
a blowdown vessel, which could lead to water being discharged to drain at too high a
temperature.
Inputs
The timer is connected directly to the mains supply.
Function / output
When a blowdown is due, a relay energises to open the bottom blowdown valve for the
duration selected. After this, the valve closes until the next blowdown cycle.
If the blowdown valve is fitted with a switch box, an alarm relay can be released if the valve fails
to open or to close within a set time (see Commissioning - Section 6.3.9, 'Alarm sub-menu').
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 1
sequence
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 2
sequence
CLOCK - 24 hrs
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00
Start time = 8:00
Start time = 00:00
Repeat = 01:00
Start time = 8:00
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 3
sequence
IM-P405-39 AB Issue 4
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BT1050 functional timing diagram
(Multi-blowdowns per day)
Setting up the timers - explanation:
1. Three TIMER sequences / patterns available
2. For each day, only one timer sequence can be allocated.
3. Timers 2 and 3 are not available if timer 1 is not being used or all of timer 1 days are
used.
4. Timers 3 is not available if timers 1 and timer 2 use all the days.
Four user variables are available:
DURATION: The time duration of the blowdown
START: The time (HRS, MINS), the timer sequence is to start.
STOP: The time (HRS, MINS), the timer sequence is to stops.
REPEAT time: The time (HRS, MINS) for the next repeated blowdown. If REPEAT = 00:00,
only one blowdown will occur at start.
CLOCK - 24 hrs
Repeat = 00:00
Duration = 20 seconds
Stop time = 17:00
Stop time = 17:00
Stop time = 17:00
Repeat = 08:00
IM-P405-39 AB Issue 4
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Installation B
Installation C
Not available
Not available
Not available
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 1
sequence
CLOCK - 24 hrs
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 2
sequence
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 3
sequence
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 1
sequence
CLOCK - 24 hrs
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 2
sequence
SUN
MON
TUE
WED
THU
FRI
SAT
TIMER 3
sequence
IM-P405-39 AB Issue 4
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CLOCK - 24 hrs
CLOCK - 24 hrs
IM-P405-39 AB Issue 4
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4. Mechanical installation
Note: Read the 'Safety information' in Section 1 before installing the product.
The product must be installed in a suitable industrial control panel or fireproof enclosure
to provide impact and environmental protection. A minimum of IP54 (EN 60529) is
required. If installed in a harsh environment (conductive dust and / or wet conditions),
extra protection is required.
During installation or maintenance, the rear of the product must be protected from
environmental pollutants entering the product. Alternatively, the tasks can be performed
in a dry clean environment.
Caution 1: The product must only be installed in the vertical orientation.
Caution 2: Do not cover or obstruct the infrared beam between products.
Ensure that the display can be easily read by the operator.
Warning: The boiler control panel or enclosure doors must be kept closed at all
times unless installation or maintenance work is being carried out.
4.1 Environmental conditions
Install the product in an environment that minimises the effects of heat, vibration, shock and
electrical interference (see Section 1 - 'Safety information').
Do not install the product outdoors without additional weather protection.
Do not attempt to open the product - it is sealed and has no replaceable parts or
internal switches.
4.2 Installation on a DIN rail
The product is provided with a clip and a set of self-tapping screws to secure it to a 35 mm DIN
rail. On the rear of the enclosure, two sets of holes are provided to give two height positions.
The clip can be adjusted to give further positions. Locate the clip onto one set of holes and
secure it using the two screws provided. Ensure the spring clip is fully engaged with the rail.
Warning: Only use the screws provided with the product.
4.3 Installation on a chassis plate:
- Drill holes in chassis plate as shown in Figure 5.
- Fit unit to chassis plate and secure with 2 screws, nuts and washers, using the slots
provided at the top and bottom of the case.
Warning: Do not drill the product case or use self-tapping screws.
4.4 Installation in a panel cutout:
(Minimum panel thickness 1 mm if the bezel is used).
- The product has integral threaded inserts (M4 x 0.7) at the top and bottom of the front
panel.
- Two M4 x 25 mm screws are provided, together with fibre washers and a bezel.
Warning:
Do not use screws over 25 mm in length - danger of electric shock.
IM-P405-39 AB Issue 4
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Fig. 5 Chassis plate / panel - cutout diagram
Fixing template cutout notes:
- Solid line indicates cutout required for panel mounting.
- Broken line indicates product outline.
- A minimum gap of 15 mm between units must be provided for product cooling.
- Mounting hole dimensions are the same for both panel and wall mounting.
112 m m
67 mm
10 mm
45 mm
92 mm
22 mm
22.5 mm
Ø 4.2 mm
Ø 4.2 mm
15 mm
Ø 4.2 mm
Ø 4.2 mm
10 mm
- Cut the panel to the dimensions given in Figure 5. Drill the screw holes in the panel in the
positions indicated.
- Remove the backing from the gasket supplied and apply to front face of the product.
- The bezel can be used to enhance the appearance of the panel cutout. If required, fit this
to the outside of the panel.
- Fit the unit from the rear of the panel, and secure using the screws, washers (and bezel)
provided.
- Tighten the M4 screws to 1.0 - 1.2 Nm.
WARNING: Do not drill the product case or use self-tapping screws.
IM-P405-39 AB Issue 4
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Note: Before installing read the 'Safety Information' in Section 1.
Warning:
Isolate the mains supply before touching any of the wiring terminals as
these may be wired to hazardous voltages.
Use only the connectors supplied with the product, or spares obtained from
Spirax Sarco Limited. Use of different connectors may compromise product
safety and approvals. Ensure there is no condensation within the unit before
installing and connecting the power.
Connecting the mains supply incorrectly can cause damage and may
compromise safety.
5.1 General wiring notes
Every effort has been made during the design of the product to ensure the safety of the
user but the following precautions must be observed:
1. Maintenance personnel must be suitably qualified to work with equipment having
hazardous live voltages.
2. Ensure correct installation. Safety may be compromised if the installation of the product
is not carried out as specified in this IMI.
3. The design of the product relies on the building installation for overcurrent protection
and primary isolation.
4. Overcurrent protection devices rated at 3 amps must be included in all phase conductors
of the installation wiring. If overcurrent protection is included in both supply wires then the
operation of one must also cause the operation of the other. Refer to IEC 60364 (Electrical
Installations of Buildings) or National or Local standards for full details of requirements
for overcurrent protection.
5. A 3 A quick-blow overcurrent protection device must be fitted to the relay circuit(s).
6. Relay contacts must be supplied on the same phase as the mains supply.
7. The product is designed as an installation category III product.
8. Install wiring in accordance with:
- IEC 60364 - Low-voltage electrical installations.
- EN 50156 Electrical Equipment for furnaces and ancillary equipment.
- BS 6739 - Instrumentation in Process Control Systems: Installation design and practice
or local equivalent.
9. It is important that the cable screens are connected as shown in order to comply with
the electromagnetic compatibility requirements.
10. All external circuits must meet and maintain the requirements of double / reinforced
installation as stated in IEC 60364 or equivalent.
5. Electrical installation
IM-P405-39 AB Issue 4
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11. Additional protection must be provided to prevent accessible parts (e.g. signal circuits)
from becoming Hazardous Live if a wire or screw is accidentally loosened or freed. Ensure
all wires are secured to at least one other wire from the same circuit. The attachment
must be as close to the terminal block as possible but must not apply undue stress on
the connection. Example: Use a cable tie to secure the live and neutral wire together. If
one wire becomes loose the other wire will prevent it from touching accessible parts.
12. A disconnecting device (switch or circuit breaker) must be included in the building
installation. It must:
- Have a rating with sufficient breaking capacity.
- Be in close proximity to the equipment, within easy reach of the operator, but not fitted
in a position that makes it difficult to operate.
- Disconnect all phase conductors.
- Be marked as the disconnecting device for the product.
- Not interrupt a protective earth conductor.
- Not be incorporated into a mains supply cord.
- Comply with the requirements for a disconnecting device specified in IEC 60947-1
(Specification for low-voltage switchgear and control gear - General rules) and
IEC 60947-3 (Switches, disconnectors, switch-disconnectors and fuse-combination
units).
13. See Section 10 - 'Technical information' for terminal and cable specification.
IM-P405-39 AB Issue 4
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5.2 Mains wiring notes:
1. Read Section 5.1, General Wiring notes, before attempting to wire the supply to the product.
2. Fuses must be fitted in all live conductors.
Disconnect device conforming to
IEC 60947-1 and IEC 60947-3
Disconnect device conforming to
IEC 60947-1 and IEC 60947-3
2
1
2
1
L
N
L1
L2
3 A fuse
Product
Product
3 A fuses
Mains circuit
(View from the underside)
Relays are shown in the power off position
Caution live
terminals
ac supply
Control relay
Alarm 1 relay
Front
Back
3 A
fuse
Input
Alarm
L N
See Section 5.2
Mains wiring notes
3 A
fuse
Input
Norm
8 7 6 5 4 2 13
Open
3 A
fuse
3. Double or reinforced insulation must be maintained between:
- Hazardous live conductors (mains and relay circuits) and
- Safety extra low voltages (All other components/ connectors/ conductors).
4. The wiring diagrams show relays and switches in the Power off position.
N L
N
Blowdown solenoid valve
Fig. 6 Mains circuit
IM-P405-39 AB Issue 4
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5.3 Signal wiring notes
An earth current loop is created if a wire or screen is connected between two earth points
that are at different potential (voltage). If the wiring diagram is followed correctly, the screen
will only be connected to the earth at one end.
The earth terminal is a functional earth rather than a protective earth.
A protective earth provides protection from electric shock under a single fault condition. This
product has double insulation and therefore does not require a protective earth. A functional
earth is used in order for the product to operate. In this application, the earth is used as a
sink or drain for any electrical interference. The earth terminal must be connected to a local
earth in order to conform to the EMC directive.
Front
Back
Notes:
E = Functional earth - Connect these pins to a clean earth local to the panel.
Switch battery back-up switches ON to activate battery.
Fig. 7 Signal circuit
Connect to
clean earth
local to the
panel
Signal circuit
(view from the top)
E 97 96 95 94 93 92 91 90 75 74 73 72 71 70
LockoutBB switch
On
Off
Battery
back-up
switch
Link to
other bottom
blowdown
timers
Bottom blowdown
switch (shown with valve
closed)
COM SCN Tx- Tx+ Rx- Rx+ H / D H / D
IM-P405-39 AB Issue 4
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5.4 EIA / TIA- 485 communication wiring diagram
The product can be connected as a slave to a two or four-wire EIA / TIA-485 multi-drop network.
A
B
A'
B'
Fig. 8 RS485 / Modbus full duplex circuit (view from the top)
EIA / TIA-485 wiring notes:
EIA / TIA-485 symbols are used (A = Tx-, B = Tx+ and A' = Rx-, B' = Rx+).
The signal direction is relative to the product being the Modbus slave, i.e. Tx+ from the product
(slave) is to be connected to the Rx+ of the master.
- Twisted pair cable should not be required for short lengths of cable < 1.5 m (< 5 ft). Standard
screened cable should suffice.
- The H/D (Half duplex) pins are used to select two or four-wire Modbus:
i) For two-wire mode, connect terminal 91 and 90 together.
ii) For four-wire mode, do not connect terminals 91 and 90 together.
Continued on page 17
Rx
Tx
Master
Common
Earth*
R*
R*
* See
wiring
notes
Front
Slave(s)
(Boiler controller)
9091929394959697E
H / DH / DRx+Rx-Tx+Tx-SCNCOM
R*
R*
IM-P405-39 AB Issue 4
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Rx
Tx
Master
Common
Earth*
R*
R*
* See wiring notes
Front
Slave(s)
(Boiler controller)
9091929394959697E
H / DH / DRx+Rx-Tx+Tx-SCNCOM
Fig. 9 RS485 / Modbus half duplex circuit (view from the top)
Add link between
terminals 91 and 90
EIA / TIA-485 wiring notes continued:
- The bus common must be connected directly to protective ground / earth at one point only.
Generally this point is at or near the master device.
- Consider terminating the two furthest ends of the bus to match the transmission line
impedance. A 150 ohm (0.5 W) resistor or a 120 ohm (0.25 W) resistor, which is decoupled
with a 1 nF (10 V) capacitor is commonly used, but ideally the line impedance should be
matched to each individual installation. Termination for short lengths of cable should not
be necessary < 300 m (< 1 000 ft) @ 9 600 Baud.
- See 'Technical information' for cable details.
IM-P405-39 AB Issue 4
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6. Commissioning
6.1 General information
All commissioning for the product is carried out using the front panel. The front panel consists
of a graphics display and a 5-button keypad - See Figure 10 and Section 2.
Warning: On entering the commissioning mode the product will cease normal control.
The control relay will shut the valve. For safety, the alarm relay will continue to operate
as normal. To regain normal control, return to the run menu.
Warning: If during commissioning, the buttons are not pressed for over 5 minutes, the
controller will revert to run mode and an error will be displayed. If the commissioning
was incomplete the controller may not provide the correct control.
The programmed settings are held in non-volatile memory (Flash) and are written to after
changing a parameter and pressing the OK button. For quick set-up see Section 6.2.
An internal battery is used to keep the clock calendar running when the mains supply
is switched off. To connect the battery, set both of the battery back-up switches (see
Section 5.3), to the on / down position.
Note: If the product has been powered down with the battery switched off, the display will
show a spurious time and date on power up. To correct this, switch on the battery and
enter the correct time and date.
Fig. 10 Front panel display
Enter sub-menus and
shift right to the next digit
when the parameter or
digit is flashing.
Scroll up
menus / sub -menus to
Increase digits
Enters parameters when the
parameter or digit is flashing.
Hold down for 5 seconds to
enter commissioning mode.
Exit sub-menus and shift left
to the next digit when the
parameter or digit is flashing
Graphic display
BT1050
OK
Scroll down
menus / sub -menus to
Decrease digits
IM-P405-39 AB Issue 4
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6.1.1 Commissioning mode navigation
After the correct pass code has been entered the display shows:
To exit the commissioning mode at any stage, press and hold the
button to return to the run mode.
Press the and buttons to scroll through the first level menus.
Press the button to enter a particular sub-menu.
The first menu title will remain displayed at the top of the screen
and the new sub-menu will appear on the next line. As you
progress through the menu, the longer the list becomes. This aids
navigation of the menu structure.
6.1.2 Changing settings (parameters)
If a particular sub-menu requires a parameter to be modified, the corresponding units (if any)
will appear on the next line (in brackets) and the parameter itself will appear on the bottom
right hand corner. The first digit will start flashing and the parameter can be modified.
If the OK button is pressed, the displayed value will be entered into memory. If the button
is pressed the value remains unchanged. The sub-menu title, parameter and units will
disappear, and the selection on the previous menu will be displayed.
Note: If a number is keyed in that is outside the parameters, an exclamation mark (!) will
appear to the left of the parameter. The minimum or maximum acceptable parameter(s) will
then be displayed.
MODE
IM-P405-39 AB Issue 4
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6.2 Commissioning - Quick set-up
This section allows the user to carry out the minimum commissioning necessary to operate
the system.
It accepts the defaults set in the factory, so will only work if the original default settings have
not been altered - See Section 10.10, 'Default settings' to confirm.
Settings can then be tailored to suit the individual requirements of the customer / application
if required.
Warning
It is essential that you comply with National / Local regulations and Guidance notes,
and the boiler manufacturers' recommendations. It is imperative that the settings
you have accepted will allow the boiler to operate in a safe manner.
Warning
It should be noted that additional cooling capacity must be installed for applications
where frequent blowdown is required.
All BDV60 blowdown vessels are designed with two threaded connections for installing
a Spirax Sarco self-acting cooling system. In the UK and in many other countries the
cooling system should be set to maintain BDV60 water discharge at a temperature
below 43°C
Quick set-up - Commissioning
For a single boiler installation, without a blowdown valve switch fitted, and with a recovery
time of 4 hours.
Parameter Set to
1. Clock
- Hours
- Minutes Actual time and date
- Month
- Yea r
2. Duration of blowdown
Depends on installation and water condition, but 5 seconds
is the recommended maximum initially
3. Start time, repeat, Set the blowdown sequence as required; start time, repeat,
stop time, days stop time, day
4. Recovery time 4 hours
Test the system to ensure that it is working correctly.
IM-P405-39 AB Issue 4
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6.3 Commissioning - full
6.3.1 Main menu structure
MODE
Allows the user to set their own password.
Allows the user to view and change the valve status OFF, OPEN
or AUTO.
Allows displayed units to be configured:Temperature in °C or °F, multiple timer priority and recovery
time to allow blowdown vessel contents to cool.
Configures the link to switch box on the bottom blowdown valve.
Configures the output communications link.
Sets actual year, date and time.
Allows the user to set up the first blowdown sequence
Duration, Start, Repeat, Stop and Days.
Allows the user to set a second sequence, if required.
For example a different blowdown duration and frequency may
be required over weekends. Not available if, Timer 1 not used or
alldays are used.
As Timers 1 and 2 if required.
Not available if Timer 2 not used or all days are used by
Timer 1 or timer 2
Warns if the valve does not lift off its seat in a given time.
Set to OFF if the valve is to be opened manually without the alarm
sounding. Latch / non latching option.
Allows the product display and functions to be tested.
Indicates the software version installed in the product.
ä
ä
INPUT
OUTPUT
CLOCK
TIMER 1
TIMER 2
TIMER 3
ALARM
TEST
SW. VER
SET PASS
DATA
ä ä ä ä ä ä ä ä ä ä
IM-P405-39 AB Issue 4
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6.3.2 Commissioning via the sub-menus
Sub-menus and their functions are outlined below, and enable the user to programme the
unit. Additional information is given where further choices can be made.
On selecting the sub-menu, the changeable variables will appear on the screen bottom
right.
The initial parameter will be the value currently stored in memory. To change the parameter,
scroll through the options using the and buttons. Note the parameters currently
saved /selected will flash. To select a new parameter, press the
OK
button. To exit the
sub-menu, press the button.
6.3.3 MODE sub-menu
Allows the user to switch from automatic or manual control of the valve.
Entering this menu (press the button) allows the user to view
the valve status settings, 'AUTO, OFF, or OPEN' - flashing:
- OFF The timer will give no blowdown.
- OPEN Continuous blowdown e.g. To drain the boiler.
- AUTO Automatic timed blowdown.
Toggle between the settings using the and buttons.
Select the required setting by pressing the
OK
button.
Note: If Open or Off is entered, then the sub-menu will jump to
'Auto'. The selection of Open or Off can be verified by scrolling
through the sub menu again (denoted by flashing selection).
Press the button to exit the sub-menu and return to the run
mode.
Note: AUTO is the normal setting for timed blowdown.
Warning: This product will remain in the mode selected in
both run and commissioning mode.
The boiler will be emptied if the controller is left in the OPEN
mode.
MODE
OPEN
IM-P405-39 AB Issue 4
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ä
ä
ää
6.3.4 DATA sub-menu
Sets time (in hours and minutes) for blowdown vessel
to cool.
Setting the recovery time to 'zero' will clear any recovery
time in process.
Prevents more than one boiler blowing down at the same
time. Selects which timer has priority (opens the blowdown
valve first).
9 = highest priority and 1 = lowest priority
If the timer is not linked to other timers, set priority to '0'.
°F or °C (°C default).
Select the preferred option and press
OK
button.
ä
6.3.5 INPUT sub-menu Set if the blowdown switch(es) is (are) fitted.
INPUT
SWITCH
INPUT
SWITCH
CLOSING
Only shown if the switch is FITTED.
Sets the delay time (seconds) before an alarm is signalled
if a blowdown valve fails to close.
WARNING - Recommend maximum 5 seconds.
Switch fitted to blowdown valve - Fitted.
No switch on blowdown valve - NONE.
Select required setting.
INPUT
SWITCH
LIFT
Only shown if the switch is FITTED and the alarm lift is ON.
Sets the delay time (seconds) before an alarm is signalled
if a blowdown valve fails to lift of its seat (starts to open).
ä
DATA
TEMP
DATA
PRIORITY
DATA
RECOVERY
IM-P405-39 AB Issue 4
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ä
ä
ä
6.3.6 OUTPUT sub-menu
Selects MODBUS communication settings:
OUTPUT
COMMS
ADDRESS
OUTPUT
COMMS
BAUD
OUTPUT
COMMS
IR COMMS
IR Comms - Sets Infrared master / slave configuration.
Select SLAVE unless communication is required.
Baud rate defines the speed of communication between
the product and an interrogating device in bits per second.
The product can be set up to 1200, 9600 or 19200 Baud,
with a default setting of 9600.
Address - This sets the address for Modbus communication.
The default is 001, and the maximum is 247.
IM-P405-39 AB Issue 4
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Sets current year (e.g. 09).
Sets time in minutes.
HRS (24) sets time in hours.
Sets month (e.g. 05 for May).
6.3.7 CLOCK sub-menu
Sets actual day of the week.
Note This is not day(s) on which blowdown occurs.
Sets date (1-31).
Sets date / month format.
Select day / month, as UK, Europe, or month / day, as USA.
ä
ä
ä
CLOCK
HRS
CLOCK
MINS
CLOCK
YRS
CLOCK
MONTH
CLOCK
DATE
CLOCK
DAY
CLOCK
FORMAT
ä ä ä ä
IM-P405-39 AB Issue 4
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6.3.8 TIMER sub-menu
This timer controls the bottom blowdown times and their duration.
The parameters will vary according to the type of boiler. Seek advice from a boiler
manufacturer, insurance company, or a competent water treatment company. Timers 1, 2,
and 3 are set in exactly the same way - see below:-
The time (Hrs, Mins) for the next repeated blowdown. If
REPEAT = 0, only one blowdown will occur at start.
Note: If '12' is entered in hours then minutes only display
'0' (zero).
Only shows if duration is greater than 0 seconds.
The time (Hrs, Mins) the blowdown sequence is to start
Note: If start time is greater than stop time,the display
resets to zero.
Only shows if duration is greater than 0 seconds.
This is the time (in seconds) the blowdown valve is to
open - the actual blowdown period. Seek advice from a
boiler manufacturer, insurance company, or a competent
water treatment company.
We recommend a 5 second duration initially.
ä
The time, (Hrs, Mins) the blowdown sequence is to stop.
Only shows if duration is greater than 0 seconds.
ä
TIMER 1, 2 or 3
DURATION
TIMER
Start
TIMER
REPEAT
TIMER
STOP
ää
Allows for selection of the day in which the blowdown
sequence is to occur. Advised, 'in use', if the selected
day is already allocated to another blowdown sequence.
Only shows if duration is greater than 0 seconds.
TIMER
DAY
ä
Explanation of setting up of the timers:
1. Three TIMER bolier sequences are available.
2. For each day, only one timer sequence can be allocated.
3. Timer 2 and Timer 3 are not available if Timer 1 is not being used, that is, if no
blowdown is required (duration = 0) or all available days have been selected in Timer 1.
4. Timer 3 is not available if Timer 1 and Timer 2 use all the days.
IM-P405-39 AB Issue 4
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ää
TEST
DI SPL AY
TEST
INPUT
TEST
OUTPUT
6.3.9 ALARM sub-menu
6.3.10 TEST sub-menu
Only shows if switch is fittted, set On or Off.
ON - Alarm will latch until commissioning mode is entered.
OFF - Alarm will only sound until the alarm condition is
removed.
Note: If switch is fitted, the timer will latch an alarm if the
valve fails to close. This cannot be disarmed.
Only shows if the switch is FITTED. Set ON or OFF.
ON - The alarm will sound if the valve fails to lift within
the time set in INPUT / LIFT.
OFF - No alarm.
Note: If ON selected, alarm will operate if MODE set to
OPEN, or if valve is manually opened.
Tests outputs:
VALVE - Opens or closes valve manually.
ALARM - Energises / de-energises alarm relay manually.
CANCEL - Select cancel or wait 5 minutes to return to
automatic control.
Tests inputs:
INT TEMP - Shows maximum internal temperature
of the electronics.
LINK - Detects if other boilers are blowing down. Will
show 'ON' if MODE-OPEN is selected.
SWITCH - Detects if the switch is open or closed.
Tests the display:
- (black on white or white on black).
- Allows the user to visually identify faulty pixels on the
display.
ä
ä
ALARM
LIFT
ALARM
LATCH
ä
IM-P405-39 AB Issue 4
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6.3.11 SOFTWARE VERSION sub-menu
SW VER
SET PASS
This allows the default pass code to be changed to a
user-defined value. It is important that if the default
pass code is changed that the new value is noted and
kept safe.
Allows the software version to be viewed. See separate
literature for further information.
6.3.12 PASS CODE sub-menu
IM-P405-39 AB Issue 4
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7. Communications
7.1 Infrared (IR)
All products in the range can communicate via an infrared bus between adjacent controllers.
It enables the parameters of up to seven slave products to be passed to a master product
fitted with RS485 (products with a graphics display).
The product connected to the RS485 networks must be fitted on the left of all the slaves
fitted to the IR bus (Figure 11) and have ‘master’ selected in the ‘output-comms’ menu.
Master
Slave
IR Bus
RS485
Fig. 11
Slave Slave Slave
Two or more IR buses can share the same panel or DIN rail by selecting another IR master.
Master 2 will ignore bus 1. See Figure 12.
To add another slave into an existing IR bus, re-select ‘master’.
Only an IR master can pass the IR bus parameters to the RS485 network. If a slave is also
connected to the RS485 network, only its parameters are passed.
Caution: Do not cover or obstruct the Infrared beam between products.
Fig. 12
Master
1
IR Bus 1
RS485
IR Bus 2
RS485
Slave Slave Slave Slave Master 2Slave Slave Slave Slave
IM-P405-39 AB Issue 4
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7.2 RS485 addressing
An offset is added to the register addresses (see above) for each device, depending on their
position on the IR bus, i.e. the master’s offset is 0, the device to its right hand side has an
offset of 100, the one to its right 200 and so on.
Master
Slave
IR Bus
RS485
Slave Slave Slave
IR address 1 2 3 4 5
RS485 Offset 0 100 200 300 400
8. Maintenance
Note: Read the 'Safety information' in Section 1 before starting any maintenance.
No special servicing, preventative maintenance or inspection of the product is required.
During installation or maintenance, the rear of the product must be protected from
environmental pollutants entering the product. Alternatively, the tasks can be performed
in a dry clean environment.
8.1 Cleaning instructions
Use a cloth dampened with water or isopropyl alcohol. Use of other cleaning materials could
damage the product and invalidate the marking.
8.2 Bottom blowdown
In many countries, including the UK, legal regulations are in force concerning boiler blowdown.
In particular, attention is drawn to the danger of working on a shut-down boiler while other
boilers are operating.
General guidance is given in Health and Safety Executive Guidance Note PM60.
The battery can be replaced, and must be removed before disposing of the product.
The battery must not be disposed of in waste destined for landfill or untreated incineration, but
must be collected separately and disposed of in accordance with local and national regulations.
Fig. 13
IM-P405-39 AB Issue 4
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8.3 Replacement and disposal of battery
Caution: - Permanent damage will occur if the printed circuit board (pcb) is completely
removed.
- Do not remove the front keypad.
8. 3.1 Cut the two side labels along the join line.
8.3.2 Squeeze enclosure in positions indictated to release locking tabs.
IM-P405-39 AB Issue 4
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8.3.3 Remove the rear half of the enclosure only.
8.3.4 Remove the blue support.
IM-P405-39 AB Issue 4
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8.3.5 Caution: permanent damage will occur if the printed circuit board (PCB) is completely
removed. Slide the PCB out just far enough to access the cable tie securing
the batter y.
8.3.6 Cut the cable tie and lift the battery from the PCB.
Cable tie hole
IM-P405-39 AB Issue 4
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8.3.7 Insert the new battery. See Section 10.5 for the battery type.
Note: the battery is polarised and only fits one way round.
8.3.8 Thread a new cable tie through holes in the PCB, fasten securely around the battery
and trim the end.
IM-P405-39 AB Issue 4
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8.3.9 Slide the PCB fully back into position and refit the blue support. Ensure the arrow
shapes on the support point toward the front.
8. 3.10 Replace the rear half of the enclosure.
IM-P405-39 AB Issue 4
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9. Fault finding
WARNING:
Before fault finding read the Safety information in Section 1 and the General
wiring notes in Section 5.1.
Please note that there are hazardous voltages present and only suitably
qualified personnel should carry out fault finding.
The product must be isolated from the mains supply before touching any of
the wiring terminals.
Safety may be compromised if the fault finding procedures are not carried out
in line with this manual.
Relay fuses to be replaced by manufacturer or accredited service department.
During installation or maintenance, the rear of the product MUST be protected
from environmental pollutants entering the product. Alternatively, the tasks can
be performed in a dry clean environment.
9.1 Introduction
If for any reason a fault occurs on the product, the instructions in this section will allow the
fault to be isolated and corrected. The most likely time for faults to occur is during installation
and commissioning. The most common type of fault is wiring.
9.2 System faults
Symptom Action
1
Display not
illuminating
1. Switch off the mains supply to the product.
2. Check all wiring is correct.
3. Check external fuse(s) are intact. Replace if necessary.
4. Check the mains voltage is within specification.
5. Switch on mains supply.
If symptoms are still present return product for examination.
Consider the likelihood that the product has been damaged from
mains borne surges / spikes. Consider installing an additional
ac power line protector between the product and the mains supply.
The protector needs to be positioned close to the product to gain
full protection.
IM-P405-39 AB Issue 4
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Symptom Action
2
Display
flashes
on and off
(1 second
approx.)
1. Switch off the mains supply to the product.
2. Disconnect all signal wires.
3. Switch the mains supply on: If symptoms are still present, return
the product for examination.
4. Replace each signal wire in turn until the fault occurs.
5. Investigate and rectify any faults in the wiring, external sensors /
transducers and modules associated with that connection.
Explanation
The internal power supply is unable to power up. If the voltages
cannot be generated, the power supply switches off for approx.
1 second. The power supply then attempts to power up again. If the
fault is still present, the cycle is repeated until the fault is removed.
This is a safety feature and does not damage the product.
3
Product
powers up
for a period
of time
(greater than
1 minute),
then
switches
off
1. Monitor the mains supply and ensure it is continuous and within
the specification limits.
2. Measure the ambient temperature and ensure it is less than
specified.
3. Investigate symptom 2.
Explanation
A re-settable thermal cut-out device will operate if one or more of
the following occurs:
- The power drawn exceeds the specification.
- The input mains voltage is lower than specified.
- The ambient temperature is higher than specified.
- The internal power supply will switch off until the product
temperature drops below 65°C. This is a safety feature and does
not damage the product.
IM-P405-39 AB Issue 4
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Operational error messages
Any operational errors that occur will be displayed in the run mode, on the alarms and
errors screen.
Error
message
Cause Action
1
Power out
There has been a
loss of power to
the product during
operation.
1. Remove the power from the product.
2. Check that all the wiring is correct.
3. Check that the power supply is secure,
i.e. does not suffer from 'brown outs'.
4. Reapply power.
5. Press the
OK
button to clear.
2
Valve failed
to open
Blowdown valve
fails to start to
open.
1. Check the correct open time has been
entered in the INPUT-SWITCH-LIFT
menu.
2. Check BB valve switch in the test menu.
3. Check the wiring between switch and the
product.
4. Check the operation of the switch.
5. Check the operation of the valve.
6. Check and replace the switch and/or
valve if necessary.
7. Press the
OK
button to clear.
3
Valve failed
to close
Blowdown valve
fails to close fully.
1. Check the correct closing time has
been entered in the INPUT-SWITCHCLOSING menu.
2. See 'Valve failed to open'.
3. Enter the commissioning mode and enter
the correct pass code.
4-6
Data timer X
invalid
Data in one of
the three timers
has been lost or
corrupted.
Values have
been restored
(X = 1 to 3).
1. Product needs to be re-commissioned.
2. Ensure product or its wiring is not located
near a source of electrical interference.
3. Return product if symptoms persist.
4. Press the
OK
button to clear.
7
Data state MC
overflow
State machine is
outside its limits.
Values have been
restored.
1. See 'Data timer' X 'Invalid' action.
2. Press the
OK
button to clear.
IM-P405-39 AB Issue 4
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Error
message
Cause Action
8
Data recovery
invalid
Data in the
recovery counter
has been
corrupted.
1. See 'Data timer X 'Invalid' action.
2. Press the
OK
button to clear.
9
Data flags
invalid
Data in the timer
flag register
has been lost
or corrupted.
Values have been
restored.
1. See 'Data timer X 'Invalid' action.
2. Press the
OK
button to clear.
10
Data errors
invalid
Data in the error
flag register
has been lost
or corrupted.
Values have been
restored.
1. See 'Data timer X Invalid' action.
2. Press the
OK
button to clear.
11
Setup menu
time out
The operator
has entered the
commissioning
mode and has not
pressed a button
for 5 minutes or
more.
1. Re-enter the commissioning mode if
required.
2. Press the
OK
button to clear.
12
Alarm is
latched
Some errors latch
the alarm relay for
safety. Clearing
the error from
the error screen
just removes the
message.
1. Enter the commissioning (set-up) mode.
If the correct password is entered all the
latched alarms will be cleared.
IM-P405-39 AB Issue 4
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10. Technical information
10.1 For technical assistance
Contact your local Spirax Sarco representative. Details can be found on order / delivery
documentation or on our web site: www.spiraxsarco.com
10.2 Returning faulty equipment
Please return all items to your local Spirax Sarco representative. Please ensure all items
are suitably packed for transit (preferably in the original cartons).
Please provide the following information with any equipment being returned:
1. Your name, company name, address and telephone number, order number and invoice
and return delivery address.
2. Description and serial number of equipment being returned.
3. Full description of the fault or repair required.
4. If the equipment is being returned under warranty, please indicate:
- Date of purchase.
- Original order number.
10.3 Power supply
Mains voltage range 110 Vac to 240 Vac at 50 / 60 Hz
Power consumption 230 V / 30 mA or 115 V / 60 mA
10.4 Environmental
General Indoor use only
Maximum altitude 2 000 m (6 562 ft) above sea level
Ambient temperature limits 0 - 55°C (32 - 131°F)
Maximum relative humidity
80% up to 31°C (88°F) decreasing
linearly to 50% at 40°C (104°F)
Overvoltage category III
2 (as supplied)
Pollution degree
3 (when installed in an enclosure) - Minimum of IP54
Enclosure rating (front panel only) IP65 (verified by TRAC Global)
Torque rating for panel screws 1 - 1.2 Nm
LVD (safety) Electrical safety EN 61010-1
EMC Immunity / Emissions Suitable for heavy industrial locations
Enclosure
Colour Light grey (similar to RAL7035)
Material ABS polycarbonate plastic
Front panel
Colour Pantone 294 (blue)
Material Silicone rubber, 60 shore.
Solder Tin / lead (60 / 40%)
IM-P405-39 AB Issue 4
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10.5 Battery (Clock calendar)
Manufacturer TADIRAN
Manufacturers par t number SL-360 / PT
Spirax Sarco part number 0965057
Type
AA (PCB tagged) Lithium Thionyl Chloride
(Lithium content 0.65 g)
Voltage 3.6 V
Capacity 2.4 Ah minimum
Temperature range 0 - 70°C minimum
Shelf life 10 years - With battery switch OFF @ Tamb: 25°C
Working life 10 years - Mains power on 35 hours / week @ Tamb: 55°C
10.6 Cable / wire and connector data
Mains and signal connector
Termination
Rising clamp plug-in terminal blocks with screwed
connectors
Cable size 0.2 mm² (24 AWG) to 2.5 mm² (14 AWG).
Stripping length 5 - 6 mm
Please note: Use only the connectors supplied by Spirax-Sarco Limited – Otherwise Safety
and Approvals may be compromised.
Switch box and Lockout (link) circuit
Type High temperature
Shield type Screened
Number of cores 2
Gauge 1 - 1.5 mm² (18 - 16 AWG)
Maximum length 100 m (328 ft)
Recommended type Prysmian (Pirelli) FP200, Delta Crompton Firetuf OHLS
RS485 communication cable / wire
Type EIA RS485 Twisted pair
Shield type Screened
Number of pairs 2 or 3
Gauge 0.23 mm² (24 AWG)
Maximum length 1 200 m (4 000 ft)
Recommended type Alpha wire 6413 or 6414
LAN Category 5 or Category 5E ScTP (screened), FTP (foil) or STP (shielded) cable can be
used, but limited to 600 m.
IM-P405-39 AB Issue 4
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10.7 Input technical data
Switch box
Maximum voltage 32 Vdc (no load, open circuit)
Maximum current 3 mAdc (short circuit)
Lockout (link)
Maximum voltage 32 Vdc (no load, open circuit)
Maximum pulldown voltage 0.25 Vdc
Maximum current 1.5 mAdc
10.8 Output technical data
Relay(s)
Contacts 2 x single pole changeover relays (SPCO)
Voltage ratings (maximum) 250 Vac
Resistive load 3 amp @ 250 Vac
Inductive load 1 amp @ 250 Vac
ac motor load
¼ HP (2.9 amp) @ 250 Vac
1
/10 HP (3 amp) @ 120 Vac
Pilot duty load C300 (2.5 amp) - control circuit/coils
Electrical life (operations) 3 x 105 or greater depending on load
Mechanical life (operations) 30 x 10
6
RS485
Physical layer RS485 4-wire full or 2-wire half duplex
Protocol Modbus RTU format
Isolation 60 Vac/dc
Receiver unit load (256 devices - maximum)
Output rate Up to 10 frames / second
10.9 Infrared
Physical layer IrDA
Baud 38400
Range 10 cm
Working angle 15°
Exempt from EN 60825-12: 2007 Safety of laser
Eye safety information products- does not exceed the accessible emission
limits (AEL) of class 1
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10.10 Default settings
10.10.1 MODE MENU
Allows the valve to be manually opened or closed, automatically opened and closed
under the control of the timer
Ranges AUTO, OPEN, OFF
Default AUTO
10.10.2 DATA MENU
TEMP (temperature units)
Ranges °C or °F
Default °C
PRIORITY
Ranges 0 - 9 (Highest priority)
Default 0 (Timer not linked)
Resolution (steps) 1
10.10.3 RECOVERY (flash vessel cooling time - after previous blowdown)
HRS - HOURS
Ranges 00 - 11
Default 4
Resolution (steps) 1
Units Hours (HRS)
MINS - MINUTES
Ranges 00 - 59
Default 00
Resolution (steps) 1
Units Minutes (MIN)
10.10.4 INPUT MENU
SWITCH (if a switch is fitted to the valve, select fitted)
Ranges FITTED or NONE
Default NONE
CLOSING (time allowed for valve to close) - Only available if a switch is fitted
Ranges 0 - 10
Default 5
Resolution (steps) 1
Units Seconds
LIFT (time allowed for valve to lift of the seat) - Only available if a switch is fitted
Ranges 0 - 10
Default 5
Resolution (steps) 1
Units Seconds
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10.10.5 OUTPUT MENU
COMMS - ADDRESS (MODBUS communication)
Ranges 1 - 247
Default 1
Resolution (steps) 1
COMMS - BAUD (MODBUS communication)
Ranges 1200, 9600, 19200
Default 9600
COMMS - IR (Infrared communication)
Ranges MASTER or SLAVE
Default SL AVE
COMMS - IR (units in network)
Ranges 1 - 8
10.10.6 CLOCK MENU
HRS - HOURS ~ 24 hour format (clock calendar)
Ranges 00 - 23
Default 00
Resolution (steps) 1
Units Hours (HRS)
MINS - MINUTES
Ranges 00 - 59
Default 00
Resolution (steps) 1
Units Minutes (MINS)
YRS - YEARS
Ranges 00 - 99 (2000 - 2099)
Default 00
Resolution (steps) 1
Units Years (YRS)
MONTH
Ranges 01 - 12
Default 01
Resolution (steps) 1
DATE
Ranges 01 - 31
Default 01
Resolution (steps) 1
DAY
Ranges MON, TUE, WED, THU, FRI, SAT, SUN
Default SUN
FO R MAT
Ranges D / m or m / d
Default D / m
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10.10.7 TIMER X (1 - 3) MENU
DURATION (valve open time)
Ranges 0 - 999
Default 0
Resolution (steps) 1
Units Seconds
Note: If the mains power supply drops below the required specification, or power down
occurs during a blowdown, the relays will de-energize and close the valve. If the mains
supply is restored after the blowdown time has elapsed, the valve will remain shut until the
next scheduled blowdown time.
START HRS : MINS
Start of blowdown sequence Only available if the duration is greater than 0 seconds
Ranges 00:00 - 23:58
Default 00:00
Resolution (steps) 1
Note: Start time must be less than STOP time
REPEAT HRS : MINS
Period when blowdown is repeated. Only available if the duration is greater than 0 seconds
Ranges 00:00 or 00:30 - 12:00
Default 00:00 (no repeats)
Resolution (steps) 1
Note: The time for the next repeated blowdown. If repeat =00:00,only one blowdown will
occur at start
STOP HRS : MINS
Stop of blowdown sequence. Only available if the duration is greater than 0 seconds
Ranges 00:01 - 23:59
Default 23:59
Resolution (steps) 1
Note: The time (Hrs,Mins) the timer sequence is to stop.
DAYS
(Days blowdown occurs). Only available if the duration is greater than 0 seconds
Ranges SUN MON TUE WED THU FRI or SAT
Default - (None selected)
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10.10.8 ALARM MENU
LIFT (alarms occurs if the valve does not lift of the seat within lift time)
Only available if the switch is fitted and selected
Ranges ON or OFF
Default ON
LATCH (alarm relay can be latched until commissioning mode is entered)
Only available if the switch is fitted and selected
Ranges ON or OFF
Default OFF
10.10.9 TEST MENU
DISPL AY
Ranges Black-on-white or white-on-black
Default Black-on-white
INPUT - INT TEMP
(Maximum internal temperature of the electronics)
Ranges -40 to +85°C or -40 to +185°F
Resolution (steps) 1
Units °C or °F
INPUT - LINK
(detects if other boilers are blowing down)
Ranges ON or OFF
INPUT - SWITCH
(detects if the switch is open or closed) Only available if the switch is selected
Ranges OPEN or CLOSED
OUTPUT - VALVE
(opens or closes valve manually)
Ranges ON or OFF
Default ON
Press the OK button to activate relay - Automatic control of relays is selected by selecting
cancel or after 5 minutes has elapses.
OUTPUT - ALARM (De-energises or energises the alarm relay manually)
Ranges ON or OFF
Default ON
Press the OK button to activate relay - Automatic control of relays is selected by selecting
cancel or after 5 minutes has elapsed.
10.10.10 SET PASS MENU (Set pass code)
Ranges 0000 - 9999
Default See Section 2
Resolution (steps) 1
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Format: Byte
Start 1 bit
Data 8 bit
Parity 0 bit
Stop 1 bit
Format: Request frame
Address 1 byte
Function code 1 byte
Start address 2 bytes
Quantity of registers 2 bytes
Cyclic redundancy check (CRC) 2 bytes
Total 8 bytes
Format: Response frame
Address 1 byte
Function code 1 byte (or error code, see below)
Byte count 1 byte (or exception code, see below)
Register data 2 times the quantity of 16-bit register
Error check (CRC) 2 bytes
Total 7 bytes if correct (or 5 bytes if in error)
Only Function Code 03, 'Read holding registers' is allowed.
11. Appendix -
Summary of the Modbus protocol
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Parameters and register data
Register Parameters
6 - Identity
Note: When the device is an IR slave and there is a
temporary error in the IR Master-Slave comms, an offset
of +32768 is added to the identification value of that
particular slave stored in the master's database.
1 Timer 1 data (days)
2 Timer 1 start (time)
3 Timer 1 duration (seconds)
4 Timer 2 data (days)
5 Timer 2 start (time)
6 Timer 2 duration (seconds)
7 Timer 3 data (days)
8 Timer 3 start (time)
9 Timer 3 duration (seconds)
The format of the register data is 16 bit integer, with the most significant byte transmitted first.
TIMER 1, 2 or 3 DATA Days
The following is a description of the bit field of the day register. If the bit is equal to '1', that
day has been selected. If equal to zero then the day has not been allocated. 'X' means it has
not been used.
X SAT FRI THU WED TUES MON SUN
BIT 7 BIT 0
Exception codes
01 illegal function
02 illegal data address
Parameter Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Device Function Exception CRC CRC
Address Code Code (LSB) (MSB)
Illegal function XX 83 01 XX XX
Illegal data address XX 83 02 XX XX
0
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12. Menu map
PASSCODE 8888
TIME: DATE/ <STATU S>
TIMER 1
TIMER 2
TIMER 3
PRIORITY
RECOVERY/HRS
CLOSING/S EC
LIFT/SEC
(ERROR)
(MINS)
(HRS)
MODE
AUTO
OFF
OPEN
DATA
TEMP °C
°F
PRIORITY 0
RECOVERY HRS 04
MINS 00
(SEC)
(SEC)
INPUT
SWITCH NONE
FITTED
CLOSING 5
LIFT 5
Visible if the
SWITCH is fitted
OUTPUT
COMMS ADDRESS
001
BAUD
9600
IR COMMS
SLAVE
MASTER
CLOCK
000000
01
01
FORM AT D/M
SAT
SUN
FRI
THU
WED
TUE
MON
M/D
HRS (24)
MINS
YRS
MONTH
DATE
DAY
(SEC)
TIMER 1
DURATION 000
LIFT ON
LATCH
OFF
ALARM
ON
OFF
Visible if the switch is fi tted.
If the switch is ON, the alar m
sounds if the valve is manually
opened.
If the switch is OFF, the valve can be
opened and closed manually without
an alarm occuring.
TEST
DISPLAY
INPUT IN T TEMP 70
LINK ON
SWITCH O PEN
OUTPUT VALV E ON
ALARM ON
CANC EL?
Visible if the switch is fi tted
SW. VER
New format
X.X.X.X.
SET PASS
7452
Commissioning mode
Run mode
Not visible if the
switch is not tted
Not visible if the
duration = 0
°C or °F
Only visible if an
error or alarm has
occured
The tinted zone indicates
a feature that is not always
shown.
OFF
OFF
Notes:
-The ' ' and ' ' buttons allow
the operator to scroll up and
down through the menu map
when commissioning the unit.
-To exit the sub-menus use the
' ' or '
OK
' buttons.
HRS
START
MINS
(HRS)
XX
(MINS)
XX
HRS
REPE AT
MINS
(HRS)
XX
(MINS)
XX
HRS
STOP
MINS
(HRS)
XX
(MINS)
XX
SUN
ON
OFF
IN USE
MON
TUE
WED
THU
FRI
SAT
TIMER 2
TIMER 3
Invisible if the duration = 0
Visible if the same
day is NOT used
by the other timers.
Visible if the same
day is already used
by the other two
timers.
Invisible if the duration = 0
Timer 1 is being used and has some s pare slots.
However, if timer 2 is not used or has fille d up the
remaining slots.
Do not show timer 3.
Timer 1 not used (no duration or no days s elected).
Do not show either timer 2 or 3.
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