CARLO GAVAZZI SPT-90 Operating Instructions Manual
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CARLO GAVAZZI SPT-90 Operating Instructions Manual

CARLO GAVAZZI SPT-90 Operating Instructions Manual

16-bit µp-based modular smart power transducer
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ENGLISH
SPT-90
• 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.
1

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  • Page 1: Table Of Contents

    ENGLISH 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 •...

  • Page 2: Operating Instructions

    CARLO GAVAZZI Instruments SPT-90 16-bit µP-based modular smart power transducer rev. 1 Operating instructions 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.
  • Page 3 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,...
  • Page 4 NPN), V 1.2VDC / max.100mA; V 30VDC max. according to DIN43864; 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);...

  • Page 5: Installation

    CONNECTIONS: screw-type. Max. 2.5 mm wire (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.
  • Page 6 Position of the slots and relevant modules DESCRIPTION Si n gl e anal o gue output • • Dual anal o gue output • • RS485 seri a l output • RS232 seri a l output • • Programming module Si n gl e rel a y output •...

  • Page 7: Preliminary Operations

    PRELIMINARY OPERATIONS Before supplying the instrument, make sure that the power supply voltage corresponds to what is indicated on the lateral label of the relevant module. 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...

  • Page 8: Front Panel Description

    FRONT PANEL DESCRIPTION Note: the keyboard + display module for parameter programming may not be present on the instrument: in this case, the RS232 serial output module 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.

  • Page 9: Operating Mode

    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) During the operating phase, the following status indications may be displayed: •...
  • Page 10 • if the Password is a number between "1 and 499", the configuration data 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 in the flow chart in the centre of this manual.
  • Page 11 : programming of the (primary/secondary) voltage transformer (V.T.) ratio. Programmable value: 1 Example: a V.T. with a 660V primary and a 100V secondary (660/100V) means a ratio (P-S value) of 6.6. The position of the decimal point has been previously selected as 11.1 to perform a V.T. ratio from 0.1 to 99.9. Ao.0 :selection menu of the digital output.
  • Page 12 Hi.A : programming of the maximum electrical scale of the analogue output. Value expressed as % of the output range (20mA, ±20mA, ±10mA, ±5mA, 10V, ±10V, ±5V, ±1V) to be generated in correspondence with the maximum measured value (Hi.E parameter). Value to be programmed within the range: 0.0 Hi.A 99.9.
  • Page 13 display will show the value set during the last programming. At the first switching on, the value of "Lo.E" is automatically set to "0" by the transducer. This value can be changed in order to have a different beginning of scale corresponding to the "Lo.A" analogue output. Hi.E : programming of the max.
  • Page 14 programmed value. Example 1: the transducer is a three-phase model for unbalanced loads and requires a rated input of a 100/š 3V phase-neutral voltage and 5A current (AV3.3 model). The mains is 20,000V phase-phase voltage and the maximum current for each phase is 500A. Therefore, the relevant parameters become: in.C P-S = 100;...
  • Page 15 : programmable address value: 1 255. b.dr : programming of the data baud rate: Selection Value 9.6_ 9600 bit/s 4.8_ 4800 bit/s 2.4_ 2400 bit/s 1.2_ 1200 bit/s : programming of the parity bit. Selection Parity No parity Even parity For any further information on the serial interface, see the relevant literature (available on request).
  • Page 16 parameters and the output is activated and deactivated only from a personal computer's serial port. The transducer displays one of the following possibilities, depending on the type of card being mounted: : pulses for energy measurements only. The number of pulses is set for each energy unit; the latter is defined by the type of totalized energy chosen in the "EnE"...
  • Page 17 “r5” in the “AL” secondary menu and set the parameters as follows: A.on = L.75, A.oF = L.85, dEL = 20. Example 4: if an alarm is to be activated when the active power goes over 135kW, with an hysteresis equal to 8kW, and a delay of 10 seconds (according to what has been written for A.on >...
  • Page 18 Considering: AFS = 37.5 (kW), FSO = 20mA, Hi.E = 28.0 (kW); Lo.E = 10.0 (kW), Hi.A = 99.9 (%), Lo.A = 20.0 (%) the Ripple (%) becomes: 100,000 x 0.5 x (28 - 10) = 15 (%) 37.5 x 20 (99.9 - 20) then, enter 15.0 as Fi.S value.

  • Page 19: Accuracy Information

    ACCURACY INFORMATION WARNING The control of the analogue outputs is not guaranteed if: - the overload conditions of the inputs (1.2 In/Un) are exceeded and - the "Sr" scale ratio is higher than 4. Input Star Voltage Delta voltage Current Un: 100V/š3 Un: 100V In: 1A...
  • Page 20 x I x PF (cos (single-phase system); = š3 x U x I x PF (cos (three-phase, three-wire system); = 3 x U x I x PF (cos (three-phase, four-wire system); where: = the real phase-neutral voltage of the electrical system being measured;...
  • Page 21 becomes: 3 x U x I x cos = 3 x 6000 / š 3 x 265 x 0.85 = 2.33MW becomes: 3 x U x VT (ratio) x CT (ratio) = 3 x 100 / š 3 x 5 x 60 x 60 = 3.12MW, the ratio P is: 0.75 In both examples the accuracy of the measurement is 0.5% F.S.

  • Page 22: Useful Information

    USEFUL INFO The transducer is able to retransmit the measured current/power/energy according to the direction of the current flowing in the primary/secondary of the connected current transformer (if connected); see the figures below: It is very important to respect the polarity of the measuring inputs, otherwise the analogue outputs will not work properly.
  • Page 23 AVAILABLE MODULES: Analogue output modules AO1050 (20mADC) AO1026 (20mADC) AO1051 (10VDC) AO1027 (10VDC) AO1052 (±5mADC) AO1028 (±5mADC) AO1053 (±10mADC) AO1029 (±10mADC) AO1054 (±20mADC) AO1030 (±20mADC) AO1055 (±1VDC) AO1031 (±1VDC) AO1056 (±5VDC) AO1032 (±5VDC) AO1057 (±10VDC) AO1033 (±10VDC) Single output Dual output Digital output modules AO1058 AO1059...
  • Page 24 AR1017 Programming unit Power supply modules AP1020 AP1021 90 - 260 VAC/DC power supply 18 - 60 VAC/DC power supply...

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