Simex SRP-94 User Manual
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Simex SRP-94 User Manual

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Input type: 0/4-20 mA, 0/1-5V, 0/2-10V
•
4 x 20 mm display
•
Read the user's manual carefully before starting to use the unit or software.
Producer reserves the right to implement changes without prior notice.
2013.12.9
User manual
METER
SRP-94
Assisting the automation
industry since 1986
SRP-94_INSSXEN_v.2.09.001

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  • Page 1 Assisting the automation industry since 1986 User manual METER SRP-94 Input type: 0/4-20 mA, 0/1-5V, 0/2-10V • 4 x 20 mm display • Read the user's manual carefully before starting to use the unit or software. Producer reserves the right to implement changes without prior notice.

  • Page 2: Table Of Contents

    User manual - METER SRP-94 CONTENTS 1. BASIC REQUIREMENTS AND USER SAFETY..................3 2. GENERAL CHARACTERISTICS........................4 3. TECHNICAL DATA............................4 4. DEVICE INSTALLATION..........................6 4.1. UNPACKING............................7 4.2. ASSEMBLY............................7 4.3. CONNECTION METHOD........................9 4.4. MAINTENANCE..........................18 5. FRONT PANEL DESCRIPTION........................18 6. PRINCIPLE OF OPERATION........................19 6.1. MEASUREMENT MODE........................19...

  • Page 3: Basic Requirements And User Safety

    User manual - METER SRP-94 Explanation of symbols used in the manual: - This symbol denotes especially important guidelines concerning the installation and operation of the device. Not complying with the guidelines denoted by this symbol may cause an accident, damage or equipment destruction.

  • Page 4: General Characteristics

    The selection of active input is realised by software, and selected input can be changed at any time. Additionally the SRP-94 allows user to select a conversion characteristic of several kinds: linear, square, square root, user defined (max.20 points length) and and volume characteristics of a cylindrical tank in the vertical and horizontal position.
  • Page 5 User manual - METER SRP-94 Current input resistance < 65 Ω (typical 55 Ω) Accepted prolonged input overload: 20% 0÷5 V, 1÷5 V, 0÷10 V, 2÷10 V Voltage input Voltage measurement accuracy ± 0,1% @ 25°C; ± one digit (for 0÷10 V range) Voltage input resistance >...

  • Page 6: Device Installation

    User manual - METER SRP-94 Display LED, 4 digit, 20mm height, red or (depending on version) LED, 4 digit, 20mm height, green Data memory non-volatile memory, EEPROM type Front panel protection IP 65 optional version with panel cut-out sealing available...

  • Page 7: Unpacking

    User manual - METER SRP-94 - Read the basic safety requirements on page 3 prior to starting the installation. - Ensure that the power supply network voltage corresponds to the nominal voltage stated on the unit’s identification label. - The load must correspond to the requirements listed in the technical data.
  • Page 8 User manual - METER SRP-94 90,5 mm 13 mm 8 mm 8 mm 13 mm max. 5 mm 1 mm 1 mm Figure 4.1. Recommended mounting hole dimensions 92 mm max. 5 mm Figure 4.2. Allowable mounting hole dimensions 92 mm...

  • Page 9: Connection Method

    User manual - METER SRP-94 115 mm Figure 4.4. Minimum distances when assembly of a number of units 4.3. CONNECTION METHOD Caution - Installation should be conducted by qualified personnel . During installation all available safety requirements should be considered. The fitter is responsible for executing the installation according to this manual, local safety and EMC regulations.
  • Page 10 User manual - METER SRP-94 - If the unit is equipped with housing, covers and sealing to, protecting against water intrusion, pay special attention to their correct tightening or clamping. In the case of any doubt consider using additional preventive measures (covers, roofing, seals, etc.).
  • Page 11 User manual - METER SRP-94 Double numeration means, that depending on device version, particular terminal can be marked according to the top or bottom number. Power RS - 485 +24V +5%, -10% (optional) supply max = 100mA DATA+ DATA- (depending on version)
  • Page 12 User manual - METER SRP-94 RS - 485 Power ACTIVE +24V +5%, -10% supply current output max = 100mA DATA+ (optional) DATA- (depending on version) 5 6 7 8 9 10 11 12 13 14 15 31 32 33 34 35 n.c.
  • Page 13 User manual - METER SRP-94 Passive, isolated RS - 485 Power Current output +24V +5%, -10% supply 4÷20mA max = 100mA DATA+ (optional) DATA- (depending on version) 5 6 7 8 9 10 11 12 13 14 15 31 32 33 34 35 n.c.
  • Page 14 User manual - METER SRP-94 internally connected 24V DC Figure 4.14. Connection of 2-wire current converters internally connected 24V DC Figure 4.15. Connection of 3-wire current converters internally connected 24V DC Figure 4.16. Connection of voltage converters...
  • Page 15 User manual - METER SRP-94 10 11 12 13 14 15 FUSE FUSE Depending on version: 85...230...260V AC/DC or 19...24...50V DC; 16...24...35V AC Figure 4.17. Connection of power supply and relays Contacts of relay outputs are not equipped with spark suppressors. While use the relay outputs for switching of inductive loads (coils, contactors, power relays, electromagnets, motors etc.) it is required...
  • Page 16 User manual - METER SRP-94 10 11 10 11 Figure 4.18. Examples of suppression circuit connection: a) to relay terminals; b) to the inductive load 10 11 10 11 Logic controller LED 10 mA voltage input 24 V Figure 4.19. Example of OC-type outputs connection...
  • Page 17 User manual - METER SRP-94 ACTIVE current output Logic controller current input 0-20 mA Figure 4.20. Example of active current outputs connection (for device with active current output only) PASSIVE current output Logic controller Isolation loss current input 4-20 mA Figure 4.21.

  • Page 18: Maintenance

    User manual - METER SRP-94 4.4. MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user. Pay attention to the ambient temperature in the room where the unit is operating. Excessively high temperatures cause faster ageing of the internal components and shorten the fault-free time of the unit's operation.

  • Page 19: Principle Of Operation

    User manual - METER SRP-94 Symbols and functions of push-buttons: Symbol used in the manual: [ESC/MENU] Functions: MENU • Enter to main menu ( press and hold by at least 2 sec.) • Exit the current level and Enter to previous menu (or measure mode) •...
  • Page 20 User manual - METER SRP-94 ”Hi r” parameter nominal measurement range 0 mA 20 mA permissible measurement range Figure 6.2. Definitions of measurement ranges in mode 0 ÷ 20mA If the measurement value does not exceed permissible measurement range but displayed value exceeds range -999 ÷...

  • Page 21: Detection Of The Peak Values

    User manual - METER SRP-94 6.2. DETECTION OF THE PEAK VALUES The SRP-94 controller is equipped with peaks detection function. It can detect a peaks of the input signal and display their values. Presets connected with this function are placed in ”HOLd”...
  • Page 22 User manual - METER SRP-94 state of relay/LED ”SEtP” parameter zone B zone A measure ”HYSt” parameter Figure 6.4. One threshold control of the relay/LED outputs state of relay/LED ”SEtP” or ”SEt2” parameter zone B zone A zone B measure ”HYSt”...

  • Page 23: One Threshold Mode

    User manual - METER SRP-94 6.3.1. One threshold mode Figure 6.6 presents the principle of relay outputs operation for one threshold mode, and an example values of other parameters. measured “SEtP” parameter displayed value signal (expected signal value) zone A “HYSt”...

  • Page 24: Two Thresholds Mode

    User manual - METER SRP-94 tA ,tB ,tC or tD (when input signal stay in zone A or zone B) are lower than parameters “t on” or “toFF”, the relay will not change his state (see points A and C, Figure 6.6 a, d, e).

  • Page 25: Device Programming

    User manual - METER SRP-94 Figure 6.7 presents the principle of relay outputs operation for two thresholds mode, and an example values of other parameters. In this mode parameter “SEt2” is accessible in common with “SEtP” , this parameter describes a second threshold of the relay output. The parameters “HYSt”, “modE”, “t on”, “toFF”, “unit”...

  • Page 26: Parameters Edition

    User manual - METER SRP-94 Functions of the buttons while sub-menu and parameters choice: Selection of sub-menu or parameter for editing. Name of selected item (sub- menu or parameter) is displayed. Operation of [ENTER] button depend on present menu position: ENTER •...

  • Page 27: Switch Parameters ("List" Type)

    User manual - METER SRP-94 Press [ENTER] at least 2 seconds to accept the changes, after that question ”Set?” is displayed, and user must to confirm (or cancel) the changes. To conform changes (and story it in EEPROM) press [ENTER] button shortly after ”SEt?” is displayed. To cancel the changes press [ESC] button shortly after ”SEt?”...

  • Page 28: Rel1" Menu

    User manual - METER SRP-94 7.3.1. “rEL1” menu This menu allows to configure the operation mode of relays and LEDs marked „ R ” (e.g. „ R1 ”). If there are few relay outputs available, then every output has its own configuration menu (e.g.
  • Page 29 User manual - METER SRP-94 - two threshold mode, relay is turned ON when the input value is bigger “out” than “bigger threshold + HYSt” and lower than “lower threshold – HYSt” , and turned on when the input signal is contained in the second zone.

  • Page 30: Beep" Menu

    User manual - METER SRP-94 If option “ noCH ” is selected for “AL” parameter, behaviour of the relay may • depend on “FiLt” parameter in some cases. If “FiLt” is set to big value and the input signal drops, result value of the measure will change slow, causes of turning on or off relay due to thresholds values.
  • Page 31 User manual - METER SRP-94 The process of displayed result calculation is described in details in DISPLAY VALUES CALCULATION paragraph. ”FiLt” - this parameter sets filtration rate. It can be set to values from 0 (no filtration ) to 5 (strongest filtration –...
  • Page 32 User manual - METER SRP-94 „t Sn” , „t Sh” - parameters defining the length and position of the sensor used to measure level of liquids, gases or solids in the tank (Figure 7.1, 7.2). „t Sn” - distance between end of the sensor and bottom of the tank, this parameter has the fixed precision 2-decimal point but the unit is 100 times smaller than “...
  • Page 33 User manual - METER SRP-94 t h3 t Sh t h2 h~I[mA] t Sn t h1 Figure 7.1 Parameters of cylindrical tank in vertical position. t h1 t h2 t h3 t Sh h~I[mA] t Sn Figure 7.2 Parameters of cylindrical tank in horizontal position.
  • Page 34 User manual - METER SRP-94 If user defined characteristic is selected (parameter “CHAr” = ”USEr”) the parameters „ Lo C ” and „ Hi C ” are not available for modification, due to their values are calculated from defined characteristic.

  • Page 35: Outp" Menu

    User manual - METER SRP-94 ”Lo r” = 75,0% (3 mA) ”Hi r” = 5,0 % (1 mA) nominal measurement range (4-20mA) [mA] permissible measurement range measurement result is displayed display display regardless on nominal range exceeding message ”-Lo-” message ”-Hi-”...
  • Page 36 User manual - METER SRP-94 “4-20” - current output enabled with 4 ÷ 20 mA mode, ”modb” - current output controlled via RS-485 interface. For passive current output: ”oFF” - current output disabled, “4-20” - current output enabled with 4 ÷ 20 mA mode, ”modb”...

  • Page 37: Bri" Parameter

    User manual - METER SRP-94 output) or from 0 to 9.9% (for active voltage output). In example on page 50 of the DISPLAY VALUES CALCULATION paragraph the procedure of the analogue outputs determining is presented in details. “AL” - this parameter determines the behaviour of analogue output if any critical situation occurs.

  • Page 38: Secu" Menu

    User manual - METER SRP-94 “HdiS” - type of displayed values: ”rEAL” - current value is displayed, ”HOLd” - peak (drop) value is displayed, “H r1” ÷ “H r4”- relay/LED outputs ( R1÷R4) operation mode: ”rEAL” - relay/LED operates depend on the current value, ”HOLd”...

  • Page 39: Edit" Parameter

    User manual - METER SRP-94 The access to registers no 04h i 05h cant be denied by ”mbAc” parameter (see: LIST OF REGISTERS). ”mbtO” - this parameter defines maximal time (sec) between following frames received by the device. If the delay will be greater than the value of ”mbtO” parameter, the relays and analogue outputs which are controlled via RS-485 interface, will set to alert state (see "OUtP"...

  • Page 40: Menu Structure

    User manual - METER SRP-94 7.4. MENU STRUCTURE Measurement mode Press and hold at least 2 seconds MENU MENU 0 _ _ _ 4-digit user password entering (if it is different from „0000”) ENTER ENTER MENU ENTER rEL1 Parameter SEtP...
  • Page 41 User manual - METER SRP-94 See previous page ENTER ENTER Parameter MENU modE HOLd edition ENTER MENU timE Hdis MENU H r1 H r2 H r3 H r4 HOUt ENTER ENTER Parameter MENU SECu Scod edition ENTER MENU A r1...

  • Page 42: The Alarm Led

    User manual - METER SRP-94 8. THE ALARM LED The ALARM LED (AL) is turned on when input signal is out of the permissible input range. See parameters: “tyPE” , “Lo r” and “Hi r” in paragraph „InPt” menu. 9. OVER-CURRENT PROTECTION The current input of the device is equipped with over-current protection circuit.

  • Page 43: Linear Characteristic

    User manual - METER SRP-94 10.1.1. Linear characteristic The normalized result is converted by fixed coefficients determined by “Lo C” and “Hi C” parameters (when the normalized results is equal 0, then value “Lo C” is displayed, and when the normalized results is equal 1, then value “Hi C” is displayed). Expression presented below...

  • Page 44: Square Root Characteristic

    User manual - METER SRP-94 10.1.3. Square root characteristic The normalized result is rooted and further conversion is done as for linear characteristic. Conversion is made accordingly with the expression:  × "Hi C" −"Lo C"   "Lo C" , where W means the displayed value.

  • Page 45: Volume Characteristics Of A Cylindrical Tank

    User manual - METER SRP-94 Normalized measurement I (for 0-20 mA range) 0,35 5-elements characteristic X (PH) = „70.0.” Y (PH) X = „35.0.” Y (PL) X (PL) = „50.0.” X = „20.0.” Prąd wejściowy [mA] X = „90.0.” X = „100.0.”...

  • Page 46: Examples Of Calculations

    User manual - METER SRP-94 Volume of tank can be write by general formula: ∫ ⋅dh Possible combination of tank shape for calculation the volume: cylindrical tank in vertical position cylindrical tank in horizontal position parameter t h2=0 t h3=0...
  • Page 47 User manual - METER SRP-94 Example 3: The linear characteristic Let the input mode = 4-20 mA, and parameters “Lo C” and “Hi C” equal to -300 and 1200 respectively. The calculations will be done for three different input currents from example 2.
  • Page 48 User manual - METER SRP-94 Example 6: The user defined characteristic Let the input mode = 4-20 mA, and the user selected the 10 segment characteristic. To do this it is necessary to enter X and Y coordinates of 11 points (see Menu ”inPt”).
  • Page 49 User manual - METER SRP-94 „ t Sn ”=00,00 „t Sh”=10,00 „t h1”=00,00 „ t h2 ”=10,00 „t h3”=00,00 „ t d ”=04,00 Input current [mA] Figure 10.6 The volume characteristic of tank depending on input current in 4÷20mA range.
  • Page 50 User manual - METER SRP-94 I [mA] Figure 10.7 The volume characteristic of tank depending on input current in 4÷20mA range. Example 9 : Current output value calculation Let the current output parameters be: “modE” = “4-20” , “OUtL” = 100, “OUtH” = 200, “Lo r” = 5.0, “Hi r” = 5.0 Parameters “Lo r”...

  • Page 51: The Modbus Protocol Handling

    User manual - METER SRP-94 11. THE MODBUS PRO TOCOL HANDLING Transmission parameters: 1 start bit, 8 data bits, 1 or 2 stop bit (2 bits are send, 1 and 2 bits are accepted when receive), no parity control Baud rate:...
  • Page 52 User manual - METER SRP-94 Register Write Range Register description “Pnt ”parameter in “InPt” menu (the copy of 03h register, decimal 0 ÷ 3 point position) 0 - “ 0”; 1 - “ 0.0”; 2 - “ 0.00”; 3 - “0.000”...
  • Page 53 User manual - METER SRP-94 Register Write Range Register description -999 ÷ 999 “HySt” parameter in “rEL1” menu, no decimal point included “modE” parameter in “rEL1” menu: 0 ÷ 5 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode;...
  • Page 54 User manual - METER SRP-94 Register Write Range Register description -999 ÷ 999 “HySt” parameter in “rEL4” menu, no decimal point included “modE” parameter in “rEL4” menu: 0 ÷ 5 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode;...
  • Page 55 User manual - METER SRP-94 Register Write Range Register description “Omod” parameter in “OUtP” menu (active current output mode) current output disabled; 1 - current output enabled with 4÷20mA 0 ÷ 3 mode; 2 - current output enabled with 0÷20mA mode;...

  • Page 56: Transmission Errors Description

    Data byte count in answer frame DATA H,L Data byte (Hi and Lo byte) CRC L,H CRC error check (Hi and Lo byte) 1. Read of the displayed value (measurement), SRP-94 device address = 01h: ADDR FUNC REG H,L COUNT H,L...
  • Page 57 User manual - METER SRP-94 2. Read of device ID code ADDR FUNC REG H,L COUNT H,L CRC L,H The answer: ADDR FUNC BYTE C DATA H,L CRC L,H DATA - identification code (20F0h) 3. Change of the device address from 1 to 2 (write to reg. 20h)
  • Page 58 User manual - METER SRP-94 The answer: ADDR FUNC BYTE C DATA H1,L1 DATA H2,L2 DATA H3,L3 CRC L,H DATA H1, L1 - reg. 01h (10 - displayed value ”1.0”), DATA H2, L2 - reg. 02h (0 - no errors),, DATA H3, L3 - reg.

  • Page 59: Default And User's Settings List

    User manual - METER SRP-94 12. DEFAULT AND USER'S SETTINGS LIST Desc. Parameter Description Default value User's value page Parameters of relay R1 operation (“rEL1” menu) SEtP Relay R1 threshold 20.0 SEt2 Relay R1 second threshold 40.0 HYSt Hysteresis of relay R1...
  • Page 60 User manual - METER SRP-94 Desc. Parameter Description Default value User's value page t on Turn on delay of relay R4 toFF Turn off delay of relay R4 unit Unit of “t on”, “toFF” parameters of relay R4 Reaction for critical situation of relay R4 Activation of acoustic signal (menu “bEEP”)
  • Page 61 User manual - METER SRP-94 Desc. Parameter Description Default value User's value page Omod Passive current output mode „4-20” (mA) OUtL Display value for 4 mA current output OUtH Display value for 20 mA current output 100.0 Lo r Extension of the bottom of the nominal output 5.0 (%)
  • Page 62 User manual - METER SRP-94 Desc. Parameter Description Default value User's value page RS 485 interface configuration (menu “rS”) Addr Device address bAud Baud rate mbAc Permission to changes of configuration registers mbtO Maximum delay between received messages rESP Additional delay of answer transmission...
  • Page 63 User manual - METER SRP-94...
  • Page 64 SIMEX Sp. z o.o. ul. Wielopole 11 80-556 Gdańsk Poland tel.: (+48 58) 762-07-77 fax: (+48 58) 762-07-70 http://www.simex.pl e-mail: info@simex.pl...

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