Sentry Digital Panel Indicator
Universal Input Panel Indicator for Temperature & Process Measurement
Setup Guide
www.rototherm.co.uk
Sentry Digital Panel Indicator
Setup Guide
Contents
Introduction......................................................................................................2
Installation........................................................................................................3
Connections.....................................................................................................5
Connecting the Sensor.....................................................................................6
Powering the Instrument.................................................................................7
Operator Functions..........................................................................................8
The Setu p M enu s.............................................................................................9
Con figu ra tio n M enu Ma p............................................................................. 12
Menu Options............................................................................................... 14
Messages....................................................................................................... 17
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Sentry Digital Panel Indicator
Setup Guide
Introduction
This Setup Guide des cribes how to instal l and configure yo ur instrument.
This instrument is marked with the international
hazard symbol. It is important to read this Setup
Guide be f o r e ins talli ng o r c o mmissioning yo ur pane l
meter as it contains important information relating
to sa f e t y and Electromagnetic Compatibilit y E MC.
The instrument provides the following features as standard:
• Universal inpu t for mV, mA, volt, thermocou ple, RTD and res istance.
• 1 configurable alarm with rela y output.
• 4 digi t br ight LE D di s pl ay.
• Transducer/transmitter supplies.
• <110mm behind panel depth (or 100mm without an y options fitted).
The instrument provides the following features as options:
• Iso lated 4 - 20mA scaleable retransmission output.
• Up to 2 additional alarms with relay outputs.
• Front panel keypad with function keys.
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Installation
To install your instrum ent, you wi ll n eed to carry out the follo win g st ep s:
• Apply the engineering units label to the right-hand side of the display
panel. A sheet of labels covering the most commonly used
engineering units is supplied with all units. If the unit you require is
not on the sheet, a blank label is provided on which you can use
LETRASET™.
• Insta ll the in st rument into a panel.
• Ma k e conn ect ions to the in strument.
PLEASE NOTE:
• Ensure that the power to the instrument is switched off before
carrying out any installation or maintenance work.
• It is recommended th at all connections to the terminals are made using
ferrules to afford greater reliability and to prevent short circuits
between adjacent terminals.
• Avoid installing the instrument close to switch gear, contactors or
motor starters.
• Do not place signal and power supply wiring in the same loom.
• Use screened cables or wires for all signal/sensor leads with screen
earthed a t on e point on ly .
Pane l Mountin g
The instrument is supplied with an installation kit consisting of a
mounting clamp, a panel sealing gasket and terminal connectors.
Ensure that there is sufficient space behind the instrument panel - the
instrument requires a depth of 100mm (110mm when any options are
fit ted) plus eno ugh space to allow safe rout ing of cables .
To install the instrument:
1. Make panel cut-out with the dimensions as shown overleaf. Panel
thickness from 1.5 mm to 9.5mm ca n be accommodated.
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Setup Guide
2. Fit the rubber seal by slipping it over the unit from the rear of the
box and pushing it forwards until it sits behind the front lip of the
unit.
3. Insert th e inst ru m ent int o th e pa nel fr o m the fro nt, pushing it t hr ou g h
as far as the front lip, to ensure correct seating of the rubber seal
bet w een the pane l an d t h e unit .
4. Working from behind the panel, take the mou nting clamp, slide over
the rear of the in stru m e nt and pus h for ward s.
5. Continue to push the clip forward until the ratchet operates and the
clamp is sufficiently compressed to apply adequate pressure on the
panel.
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Connections
The diagram b elow shows the rear p anel terminal connection arr angement.
Rear Panel Terminal Connections
Ens ure the power supp ly is connected to Termin als 1 & 2 (m arked N & L).
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Setup Guide
Co nnecting the Sensor
Thermocouple/mV Resistance & RTD Measurements
Current (±20mA) 2-wire 20mA Transmitter
Voltage Measurement Bridge Measurement
Potentiometer 10V Transducer Supply
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Setup Guide
Powering the Instrument
The instru ment is designed to operate from an AC supply with voltages in
the range 90 - 265V AC 50/60Hz mains supply with a maximum power
consumption of 8VA when all outputs are fully loaded and the display has
all segm ent s illum inated.
WARNING - The instrument is designed for installation in an
enclosure which provides adequate protection against electric shock.
Access to power terminals should be restricted to authorised skilled
personnel only. Application of supply voltages higher than those for
which the instrument is intended may compromise safety and cause
perma nent damage.
The diagram below shows how the instrument should be connected to the
mai ns suppl y. Isola tion s houl d be pr ovide d by a dou ble po le swit ch a nd a
time-delay 200mA fuse.
Recommended Mains Supply Connections
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Setup Guide
Operator Function s
These functions are only available on units which have the front panel
pus h bu ttons .
Operator/Configuration Mode - Key Functions
From t he normal runt ime display:
Enter - Accesses the setup menus.
Next - Scro lls for wa rd throug h t h e s etup me nus.
Up - Function Key 1 (see pa ge 16).
Down - Accesses the alarm setpoint(s). Use the Next Key for
view ing and the Enter Key for editing.
Star - Function Ke y 2 (see page 16).
NOTE: Units which have the front panel push buttons are externally
configurable. Units which do not have front panel push buttons are
internally configurable (see page 9).
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Setup Guide
The Setup Menus
Next Enter
Behind the Fron t Pan el
The i n strum ent uses a si ngl e l eve l menu st ru ctur e. Th e me nu s y ste m l is t s
parameters (eg. inPt, unit, dP, etc.), each of which leads to a list of
configurable instrument options (eg. the parameter inPt leads to the
options mV, mA, VoLt etc.) .
To enter the setup menus:
1. Remove the front cover by pu shing the extraction tool into the ga p
below t he b ez el a n d t h en pu ll in g th e tool forward to u n clip the bezel
as shown in the diagram below.
Removing the Bezel with the Extraction Tool
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2. Press and hold down the Enter Key for approximately 3 seconds
until the dis pla y b egin s to fla sh.
3. Press the Next K ey an d t h e flashing displa y s h ould be replac ed with
th e m e s sa ge inPt (the first menu parameter).
4. To cycle through the menu parameters, press the Next Key
repeatedly.
5. To view a menu parameter, press the Enter
Key and the current
option for t ha t pa r a m eter wil l be dis played.
6. To cycle through all of the available options for a parameter, press
the Next Key.
7. Press the Enter Key to select the required option.
8. a)
Editing a Setting
Some parameters are setup by selecting from a list of options
(eg. the parameter unit has 3 options:
o
C, oF and EnG).
The follo wing exam ple will sh ow you how to e dit a param eter.
We will cha nge the deci mal places (lab ell ed dP) from 1 to 2.
• With the unit displaying the measured value, press and
hold down the Enter Key for approximately 3 seconds
until the dis pla y b egin s to fla sh.
• Press the Next Key and the flashing display should be
replaced with the message inPt (the first menu parameter).
• Press the Next Key repeatedly until dP is displayed.
• Press the Enter Key and nnn.n will be displayed.
• Press the Next Ke y and the decimal point will move and
nn.nn will b e dis play e d.
• Press the Enter Key to save this setting and exit. When the
Enter Key is pressed, the display will return to the menu
pa rameter, ie. dP.
• Press the Next Key repeatedly to scroll through the rest of
the menu parameters until the measured value display is
restored.
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b) Editing a Value
Other parameters are changed by editing a value (eg. the
parameter HdSP has a default numeric value of [100.0]).
Press the Next Key to edit the flashing digit and the
Key to select the next digit for editing.
The following example will show you how to edit a numeric
value. We will change the hi gh di spla y valu e (lab ell e d HdSP).
• With the unit displaying the measured value, press and
hold down the Enter Key for approximately 3 seconds
until the dis pla y b egin s to fla sh.
• Press the Next Key and the flashing display should be
replaced with the message inPt (the first menu parameter).
• Press the Next Key repeatedly until HdSP is displayed.
• Press the Enter Key and 100.0 w ill be displa yed (wit h the
least signi ficant digit fla shi ng) .
• Press the Next Key to scroll t hrou gh digit values 0 to 9
and edit the least significant digit.
• To move to the next most significant digit, press the
Enter
K ey and the digit will fla s h.
Enter
• Repeat the previous 2 steps until the left most significant
digi t is flas hing.
• Press the Next Ke y t o scr oll t hrough dig it value s -1, - and
0 to 9.
• If the value allows the dP position to be moved, the dP
will flash. To m ove th e dP position, use the Next Key.
• Press the Enter Key to save this value and exit. When the
Enter Key is pressed and the left most significant digit is
flashing, the display will return to the menu para meter, ie.
HdSP.
• Press the Next Key repeatedly to scroll through the rest of
the menu parameters until the measured value display is
restored.
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Setup Guide
Configuration Menu Map
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Menu Op ti on s
Input Default: mV
inPt
Allows the input type and range to be def ined. There are 12 ranges
for temperature measurement available. When a thermosensor range is
sel e cted , i e. J, K, t, r, S, n or RTD, the instrument will automatically set
the appropriate scaling in
En gineer ing Units Default: Eng
Allows the user to define th e u nits of mea surement to be displayed
unit
o
in
C, oF and Eng (linear engineering units).
Decimal P osition Default: 1
o
C.
dP
Defines the position of the decimal point for the display; 0 or 1 for
the rmocouples/RTD and 0 to 3 for proces s input s.
Hi gh and Lo w D ispla y Values Defa ul t: L ow = 00 0.0, hi g h = 10 0.0
The low display value LdSP is used for sca lin g pur po se s
HdSP LdSP
when combined with the other scaling parameters L-iP, HdSP, and H-iP.
These 4 parameters can scale the measured input to any engineering u nits
as long as the relationship between the displayed units is linear. LdSP is
used to define the value to be displayed for an input defined by L-iP.
HdSP is used to define the value to be displayed for an input defined by
H-iP.
High and Low Input Values
Correspond to the signal output values from the sensor
H-iP
which will cause the instrument to display the values set as LdSP and
HdSP. L-iP and H-iP can be input in mV, V, mA etc.
L-iP
VAL rEAd
There are 2 methods of setting the low and high input
values, either by manua lly enteri ng a signa l value usi ng the VAL option or
by sampling the sensor output using the rEAd option. Values entered
manually are entered in the same way as other numeric values (see
Editing a Value page 11). The value to be entered will usually be
supplied with the data accompanying your sensor. However, if it is not
available, the output from the sensor may be rEAd from an external
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Setup Guide
source by the instrument. When performing a rEAd input a s part of t he
scaling process, the sensor must have the corresponding physical value
applied. This may be pressure, weight, temperature etc. The instrument
will sample the output from the sensor and save this as the L-ip and H-iP
scaling parame ters .
A example of scali ng: 0 - 100 mV = 0 -1000 (psi)
Display Filtering Default: 000
Filt
This p arameter is used to apply a digital filter to the display v a lue.
The filter is defined in seconds which approximate to the time constant.
This p arameter would be used to damp out a n y effe cts from noisy signals.
LdSP = 0 L-iP = 0 (mV)
HdSP = 1000 H-ip = 100.0 (mV)
Mains Fr e q ue nc y Default: 50Hz
MAin
Set to the mains frequency dependent on the local mains supply.
Alarm Messages Display Default: On
Enables display alarm messages when set to on or disables
AdSP
messages when set to oFF.
NOTE: Alarm 3 has the highest priority for messages and Alar m 1 has the
lowes t.
Alarm 1 Mode Default: None
AL 1
Defines whether Alarm 1 is disabled when to set to nonE or
operates as a high or low al arm.
As Alarm 1 if Alarms 2 and 3 fitted.
AL 2 AL 3
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Alarm Setpoint 1 Default: 100.0
SP-1
Def ines the alarm setpoint for Alarm 1 in display uni ts.
SP-2 SP-3
As Alarm Setpoint 1 if Alarms 2 and 3 are fitted.
Relay 1 Default: True
rEL1
Defines the operation of Re lay 1, which can be in either the
energised alarm st ate (truE) or the de-energised alarm state (FLSE).
rEL2 rEL3
As Relay 1 if Alarms 2 and 3 are fitted.
A100 Default: 100.0
A100
Defines the display value which corresponds to 20mA from the
optional analogue retransmission.
A0 Default: 0.0
A0
Defines the display value which corresponds to 4mA from the
optional analogue retransmission.
Key 1
KEY1
On units fitted with the front panel buttons, the following
functions may be assigned to either or both function keys: zero, tare,
display high (ma ximum) or low (minimu m) value since la st reset or r eset
of the high and low values to the current measured value.
Key 2
As for Key 1.
KEY2
Default Default: Off
dFLt
Allows the instrument to be returned to its factory supplied
setup.
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Messages
The input circuit, when measuring mV, thermocouple or RTD, has
brk
detected an open circuit sensor connection. When a sensor break is
detected by the instrument, the measured value will be forced upscale
causing any high alarms to be ac tivated.
Displayed when the measured value goes out of its
undr oVEr
allowed range, either outside the normal range of the connected
thermosensor or the maximum/minimum display range for the decimal
pla ce s se t.
Alarm Messages
Alarm messages are 3 letters followed by the alarm number. The codes
are:
HiA1 Hi A2 HiA3
High alarm. Eg. HiA3 indicates high Alarm 3
has been activated.
LoA1 LoA2 LoA3
Low alarm.
NOTE: Alarm 3 has the highest priority for messages and Alar m 1 has the
lowes t.
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your local Rototherm distributor
Sentry-Setup-2005
JAG0805
ISO9001:2000
FM11958
This literature is for guidance only. It does not constitute recommendations, representations or advice, nor is it part of any contract.
In keeping with British Rototherm’s policy for continual product development and improvement, we reserve the right to amend specifications without notice.
© 2005 British Rototherm Co. Ltd. All rights reserved.
British Rototherm Company Limited
Kenfig Industrial Estate, Margam, Port Talbot SA13 2PW, United Kingdom
Telephone: +44 (0) 1656 740 551 Facsimile: +44 (0) 1656 745 915 E-mail: sales@rototherm.co.uk Web site: www.rototherm.co.uk
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