CARLO GAVAZZI SPT-90 User manual

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SPT-90
OPERATING INSTRUCTIONS
• General features _________________________ 2
• Technical features ________________________ 2
• Installation ______________________________ 5
• Preliminary operations _____________________ 7
• Front panel description ____________________ 8
• Operating mode __________________________ 9
• Accuracy information _____________________ 19
• Useful information ______________________ 22
• Appendix ______________________________ 25
Important:
We suggest you keep the original packing in case it is necessary to
return the instrument to our Technical Service Department.
In order to achieve the most from your instrument, we recommend
you read this instruction manual carefully.
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CARLO GAVAZZI Instruments
SPT-90
16-bit µP-based modular smart power transducer
rev. 1
Operatinginstructions
Important:
We suggest you keep the original packing for a further shipping of the
instrument.
In order to guarantee a correct use of the transducer, we recommend the
user to carefully read the present instruction manual.
GENERAL FEATURES
The most important features are:
•Only two basic models
•TRMS measurements
•5 input ranges
•Connections to CT and VT, full range CT and VT ratio programming
•Measurements of W, Wavg (programmable from 1 to 30 minutes), VA,
var, (power factor) cosϕ, Wh, VAh, varh, Amax (among the phases),
Vdelta avg, VL1-N, VL2-N, VL3-N, Hz L1
•Outputs: 20mA, ±5mA, ±10mA, ±20mA, 10V, ±1V, ±5V, ±10V (all with
scaling), DC pulse (programmable pulse for kWh, KVAh, kvarh), serial
RS485 (MODBUS/JBUS), RS232 and alarm set-point.
The main programming parameters are:
•Programming of the password
•Selection of the electrical system
•Programming of CT and VT ratio
•Programming of analogue and serial outputs (when present)
•Selection of energy measurement (if the pulse output is available)
•Programming of the output working
•Programming of the digital filter
•Programming of the power integration time (Wavg).
TECHNICAL FEATURES
BASIC ACCURACY (VOLTAGE/CURRENT): 0.5% F.S.
BASIC ACCURACY (POWER/ENERGY):0.5% F.S.
TEMPERATURE DRIFT:analogue output: 300ppm/°C
serial output: 200ppm/°C
RIPPLE:≤1%

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RESPONSE TIME: ≤250ms typical
5 INPUT RANGES:100/š3 / 100VAC - 1AAC (AV1)
100/š3 / 100VAC - 5AAC (AV3)
250 / 433 VAC - 1AAC (AV4)
250 / 433 VAC - 5AAC (AV5)
400 / 690 VAC - 5AAC (AV7)
FREQUENCY RANGE: From 48 to 62 Hz
OVERLOAD PROTECTION:continuous: 1.2 Un/In,
for 1 second: 20 In, 2 Un
TRMS MEASUREMENT: direct coupling, crest factor 3
SAMPLING FREQUENCY: 1900 Hz
ALARM SET-POINT (IF AVAILABLE): 1 adjustable set-point alarm.
Alarm type: high alarm, low alarm. Programmable hysteresis and time
delay.Thecontrolcanbeconnectedtothefollowing:W,VA,var,Wavgand
PF (cosϕ) system, maximum current (among the phases), V delta avg,
VL1-N, VL2-N, VL3-N, Hz L1;
Time delay activation: programmable from 0 to 255 seconds;
Output status: normally de-energized;
Output type: relay, SPDT
AC 1 - 8A@250VAC
DC 12 - 5A@24VDC
AC 15 - 2.5A@250VAC
DC 13 - 2.5A@24VDC
Maximumresponsetime:250ms(filterexcluded,set-pointactivationtime
delay: “0”);
Insulation:4000VRMSbetweenoutputandpowersupplyinput;4000VRMS
between output and power supply input.
FILTER: operating range: from 0 to 99.9% of the input scale both on the
analogueandtheserial output (actiononthe fundamental variables:V/A/
W and relevant derivatives); filtering coefficient: from 1 to 255.
ANALOGUE OUTPUT: from 0 to 20mADC, ±5mADC, ±10mADC,
±20mADC,from0to10VDC,±1VDC,±5VDC,±10VDCwithzeroandfull
scale programming within the whole range. With filter action.
Load: output 20mA: ≤600 Ω
output ±20mA: ≤550 Ω
output ±10mA: ≤1100 Ω
output ±5mA: ≤2200 Ω
Load: output 10V: ≥10 kΩ
output ±10V: ≥10 kΩ
output ±5V:≥10 kΩ
output ±1V: ≥10 kΩ
Insulation: by means of optocouplers, 4000VRMS between output and
measuring inputs; 4000VRMS between output and power supply input.
Accuracy: 0.2% f.s.
PULSEOUTPUT(IFAVAILABLE):outputtype:opencollector(transistor

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NPN),VON 1.2VDC/max.100mA;VOFF 30VDCmax.accordingtoDIN43864;
pulse duration: 20ms (ON), 20ms (OFF); insulation: by means of
optocouplers, 4000VRMS between output and measuring inputs,
4000VRMS between output and power supply input.
RS485/RS422 SERIAL OUTPUT (IF AVAILABLE): multidrop: bidirec-
tional (static and dynamic variables); 2 or 4 wires; maximum distance
1200m; termination and/or line bias selectable directly by dip-switch; 255
programmable addresses; data format: 1 start bit, 8 data bits, no parity /
even parity, 1 stop bit; baud rate: 1200, 2400, 4800 and 9600 baud
selectable by key-pad; protocol according to the MDOBUS/JBUS.
Reading of single phase variables:
P, PAVG, S, Q, PF (cosϕ), VL-L, f, energy and status of digital inputs, set-
point output and status of the energy overflow bit, transducer's model.
Reading of single phase variables:
PL1, SL1, QL1, PF (cosϕ)L1, VL1-N, IL1
PL2, SL2, QL2, PF (cosϕ)L2, VL2-N, IL2
PL3, SL3, QL3, PF (cosϕ)L3, VL3-N, IL3
Writing: all programming parameters, reset of the energy overflow bit,
reset of energy totalization, activation of static output.
Stored energy (EEPROM):  250.000.000 kWh
Insulation: by means of optocouplers, 4000VRMS between output and
measuring inputs, 4000 VRMS between output and power supply input.
Temperature drift: 200 ppm/°C
RS232 SERIAL OUTPUT (IF AVAILABLE): bidirectional (static and
dynamic variables); 3 wires; maximum distance 15m; data format: 1 start
bit,8databit,noparity,1stopbit;baudrate:9600baud;protocolaccording
to MODBUS/JBUS.
Other specifications: same as RS485/RS422
POWER SUPPLY INPUT
From 90 to 260VAC/VDC, 50/60 Hz;
From 18 to 60VAC/VDC, 50/60 Hz;
Self-consumption: ≤30VA / 20W (from 90 to 260V)
≤ 20VA / 20W (from 18 to 60V)
OPERATING TEMPERATURE : from 0 to +50°C (R.H. < 90% non-condensing)
STORAGE TEMPERATURE : from –10 to +60°C (R.H. < 90% non-condensing)
REFERENCE VOLTAGE FOR THE INSULATION: 300VRMS to earth
INSULATION: 4000VRMS between all outputs/inputs to ground
DIELECTRIC STRENGTH: 4000VRMS for 1 minute
NOISE REJECTION (CMRR): 100 dB, from 48 to 62 Hz
ACCORDING TO THE FOLLOWING STANDARDS:
Electromagnetic compatibility: EN 50 081-2, EN 50 082-2
Safety: IEC 61010-1, EN 61010-1
Product: IEC 60688-1, EN 60688-1
Pulse output: DIN 43864

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CONNECTIONS: screw-type. Max. 2.5 mm2wire (x2)
DIMENSIONS: 90 x 90 x 140 mm
MATERIAL: ABS, self-extinguishing: UL 94 V-0.
PROTECTION DEGREE: IP 20
WEIGHT: 550 g. approx. (packing included).
INSTALLATION
Overall dimensions and panel cutout
138mm
Mounting
The instrument is to be mounted on DIN-rail.
Connections
See the wiring diagrams on the appendix.

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Position of the slots and relevant modules
12
ABCD
PU
PS IM
DESCRIPTION A B C D PU PS
IM
Singleanalogueoutput • •
Dualanalogueoutput • •
RS485serialoutput •
RS232serialoutput •
Programmingmodule •
Singlerelayoutput • •
Dualrelayoutput • •
Singleopencollectoroutput • •
Dualopencollectoroutput • •
Digitalinputs •
Powersupply •
Measuringinputs •

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PRELIMINARY OPERATIONS
Before supplyingtheinstrument,makesurethatthepowersupplyvoltage
correspondstowhatisindicatedonthelaterallabeloftherelevantmodule.
For example:
AP1020
Universal power supply
100V...240V DC/AC (50Hz to 60Hz)
input range
12W / 30VA 1 PHASE
power consumption
S/N 001900/20115
serial number
WARNING: the measuring input module is fixed and sealed to the
main unit of the instrument. Its removal implies the breakage of the
seal with subsequent expiry of the warranty.
The various modules (input, output and power supply) have been con-
ceived to be mounted only in one of all the slots available.
Toknowin whichslotevery moduleisto bemounted,refer tothedrawing
on the previous page.
Foracorrectmountingoftheinstrument, insertthemodulesintherelevant
slots, then, at the end, enter the central module, which is a blind module
oraprogrammingkey-padora communicationportRS232andwill fix the
other modules in the relevant slots. To remove the modules, use a
screwdriver:
A) lever the two fixing tabs (points “1” and “4” in the drawing below)
B) extract the central module,
C) remove also the other modules.
NOTE: any slot which has not been used must be closed by means of
the special plug modules.
Screwdriver

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FRONT PANEL DESCRIPTION
Note:the keyboard+displaymoduleforparameterprogrammingmaynot
bepresentontheinstrument:inthiscase,theRS232serialoutputmodule
or a plug module (without any function) can take its place.
1. Keyboard
The keyboard module (when present) allows to access to the following
functions:
Functions available out of the programming phase.
Keys to be pressed:
Displaying of the revision number (example: r. 0), for a few seconds.
For more than two seconds: access to the programming phase.
Functions available in the programming phase.
Keys to be pressed:
Password confirmation.
Access to the main menu and to the secondary menus;
Inthesecondarymenus:valuesettingandexitfromthesecondarymenu.
Increase of the password value.
Inthemainmenu: selection oftheparameters(from the firsttothelast).
In the secondary menus: increase of the displayed value.
Decrease of the password value.
Inthemainmenu: selection oftheparameters(from the lasttothefirst).
In the secondary menus: decrease of the displayed value
2. Display
Alphanumeric indication by means of a 7-segment LED:
• of the programming parameters;
• of the alarm status.
3. Terminal blocks
3
2
1
3

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OPERATING MODE
It is possible to configure SPT-90 either by means of a special configura-
tion software "SptSoft" or by means of a special programming module:
• Displaying and control (if the programming module is present)
Duringtheoperatingphase,thefollowingstatusindicationsmaybedisplayed:
•the decimal point of the digit on the right is blinking: the
transducer works regularly and it's not in alarm status;
• theuppersegments ofthe3digitsare blinking:theoperator has
set a high alarm set-point and the instrument is in alarm status;
•the lower segments of the 3 digits are blinking: the operator has
set a low alarm set-point and the instrument is in alarm status.
•the central segments of the 3 digits are blinking; the static
output has been activated by means of the serial interface.
• Programming
Toentertheprogrammingphase,pressthe keyuntil"PAS"isshown
on the display; then "0" will be displayed: the correct numerical code
(password) is to be selected now. The following conditions may occur:
1) theoperatorhasn'tenteredanypassword:pressthe keytoenterthe
configuration menu of the transducer;
2) the operator has already entered a Password: select the correct
password by means of the key (to increase the displayed value)
or (to decrease it) until the desired value is displayed.
Pressthe key toconfirmthevalue;ifthepasswordiscorrect,thenthe
displaywillshow"P.CH"thatisthefirstconfigurationmenu;ifthepassword
isnotcorrect,thedisplayshows"End"andthetransducergoesbacktothe
displaying and control phase.
PROGRAMMING OF A NEW PASSWORD AND AUTOMATIC SELEC-
TIONOF THEPROTECTIONLEVELOFTHECONFIGURATIONDATA.
To enter the new Password:
•if the Password is "0", when the display shows the "P.CH" message,
followed by "oLd" and then "0", select the desired numerical code using
the or keys,thenconfirmitbypressing the key:thedisplay
will show the first configuration menu "P.CH".
•if the Password has already been entered, it is possible to modify it
following the procedure described at No. 2); after the "P.CH" message,
the display shows "oLd" followed by the already programmed value;
select the new numerical code using the or keys and confirm
it by pressing the key: the display will show the first configuration
menu "P.CH".
Data protection levels:
•if the Password is "0", the configuration data are not protected by
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•if thePasswordisanumberbetween"1 and499",theconfigurationdata
are almost entirely protected against undesired accesses.
It is possible to reset the Password by entering the number 682.
•All programming/configuration steps of the transducer are shown
intheflowchartinthecentreofthismanual.Theflowcharthasbeen
conceivedtomaketheoperatorbetterunderstandtheprogramming
structure of the transducer indicating the position of the current
function with regards to the others. The flow chart also makes the
commands to be used in the configuration phase more easily
understandable.
•Seethechapter"FrontPanelDescription"forallinformationregard-
ing the use of the key-pad and the relevant main functions.
• Description and use of the displayed symbols:
(thesymbolslike PAS inablackbackgroundbelongtothemainmenu;
the symbols like P-S in a white background belong to the secondary
menu).
PAS :access password to programming.
Programmable value: 0 ≤PAS ≤499.
P.CH :selection menu to modify the password
Programmable value: 0 ≤oLd ≤499.
SYS :selection menu of the electrical system (active only if the
transducertakesmeasurementsonsinglephaseorthree-phasesystems
with balanced load). Programmable value:
Selection System type
1 P Single phase
3 P Three-phase, balanced load
in.C :selection menu of the current input/s.
P-S : programming of the (primary/secondary) current transformer/s
ratio.
Programmable value: 1 ≤P-S ≤999.
Example:aCTwitha100Aprimaryanda5Asecondary(100/5A)means
a ratio (P-S value) equal to 20.
in.U : selection menu of the voltage input/s.
d.P : selection of the decimal point position when considering the
voltage transformer/s (V.T.) ratio.
decimal Point Selection Min. value Max. value
111 1 999
11.1 0.1 99.9
1.11 0.01 9.99