Simex SRP-946 User Manual
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Simex SRP-946 User Manual

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Firmware: v.6.00 or higher
•
Input type: 0/4-20 mA, 0/1-5V, 0/2-10V
•
6 x 13 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.
For pricing or any further information, please contact Omni Instruments Ltd.
Email: info@omni.uk.com or visit our website at
2014.11.06
User manual
METER
SRP-946
www.omniinstruments.co.uk
SRP-946_INSSXEN_v.1.00.001

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Summary of Contents for Simex SRP-946

  • Page 1 User manual METER SRP-946 Firmware: v.6.00 or higher • Input type: 0/4-20 mA, 0/1-5V, 0/2-10V • 6 x 13 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-946 CONTENTS 1. BASIC REQUIREMENTS AND USER SAFETY..................3 2. GENERAL CHARACTERISTICS........................4 3. TECHNICAL DATA............................5 4. DEVICE INSTALLATION..........................7 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-946 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-946 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: Technical Data

    User manual - METER SRP-946 3. TECHNICAL DATA Power supply voltage 85...230...260V AC/DC; 50 ÷ 60 Hz (separated) (depending on version) or 19... 24 ...50V DC and 16... 24 ...35V AC (separated) External fuse (required) T - type, max. 2 A Power consumption max.
  • Page 6 User manual - METER SRP-946 range max. 0 ÷ 11V Active voltage output (optional, for two relays or two OC-type output version only) Load resistance min. 2000 Ω Temperature stability 50 ppm / °C Display range -99999 ÷ 999999, plus decimal point...

  • Page 7: Device Installation

    User manual - METER SRP-946 This is a class A unit. In a residential or a similar area it can cause radio frequency interference. In such cases the user can be requested to use appropriate preventive measures. 4. DEVICE INSTALLATION The unit has been designed and manufactured in a way assuring a high level of user safety and resistance to interference occurring in a typical industrial environment.
  • Page 8 User manual - METER SRP-946 mounting hole inserting it from the front side of the panel, and then fix it using the brackets (Figure 4.3). The minimum distances between the centre points of multiple units - due to the thermal and mechanical conditions of operation - are 115 mm x 67mm (Figure 4.4).

  • Page 9: Connection Method

    User manual - METER SRP-946 92 mm 5 mm 12 mm 10 mm Figure 4.3. Installing of brackets, and dimensions of connectors. 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.
  • Page 10 User manual - METER SRP-946 - Wiring must meet appropriate standards and local regulations and laws. - In order to secure against accidental short circuit the connection cables must be terminated with appropriate insulated cable tips. - Tighten the clamping screws. The recommended tightening torque is 0.5 Nm.
  • Page 11 User manual - METER SRP-946 Connections of power supply voltage and measurement signals are executed using the screw connections on the back of the unit’s housing. 6-7 mm Figure 4.5. Method of cable insulation replacing and cable terminals All connections must be made while power supply is disconnected ! Double numeration means, that depending on device version, particular terminal can be marked according to the top or bottom number.
  • Page 12 User manual - METER SRP-946 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-946 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-946 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-946 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-946 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-946 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-946 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-946 6. PRINCIPLE OF OPERATION After turning the power supply on, device ID and software version are showed on the display, next the controller goes to the measurement mode. 6.1. MEASUREMENT MODE In the measure mode, the measurement results, converted over selected characteristic, are displayed on the LED display.

  • Page 20: Detection Of The Peak Values

    6.2. DETECTION OF THE PEAK VALUES The SRP-946 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” menu (see description of ”HOLd” menu). The detection of the peak can be done if the measured signal raises and drops of value at least equal to parameter ”PEA”...

  • Page 21: Control Of The Relay Outputs

    User manual - METER SRP-946 6.3. CONTROL OF THE RELAY OUTPUTS The control of the object (measured signal) is realized via relay outputs. Front panel LEDs named “ R ” indicates the state of particular relay output. If device is not equipped with one or more relay outputs, menus refer to this relays are available, but apply to LED indicators only.

  • Page 22: One Threshold Mode

    User manual - METER SRP-946 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 23: Two Thresholds Mode

    User manual - METER SRP-946 The state of relay output while the input value exceeds the border values (points A, B, C, D) is described by parameter “modE”. The relay can be turned on ( “modE” = ”on” ), or turned off (“modE”...

  • Page 24: Device Programming

    User manual - METER SRP-946 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 25: Parameters Edition

    User manual - METER SRP-946 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 26: Switch Parameters ("List" Type)

    User manual - METER SRP-946 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 27: Rel1" Menu

    User manual - METER SRP-946 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 28 User manual - METER SRP-946 - 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 29: Beep" Menu

    User manual - METER SRP-946 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 30 User manual - METER SRP-946 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 31 User manual - METER SRP-946 „t d” - the diameter of the middle part of a tank, this parameter has the fixed precision - - 2-decimal point, „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).
  • Page 32 User manual - METER SRP-946 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 33 User manual - METER SRP-946 (parameter “CHAr” = ”USEr” ) the If user defined characteristic is selected parameters „Lo C” and „Hi C” are not available for modification, due to their values are calculated from defined characteristic. “AddP” - this menu allow user to add single point to the user defined characteristic.

  • Page 34: Outp" Menu

    User manual - METER SRP-946 ”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 35 User manual - METER SRP-946 “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 36: Bri" Parameter

    User manual - METER SRP-946 This parameter can be set from 0 to 19.999% (for active and passive current output) or from 0 to 9.999% (for active voltage output). In example on page 49 of the DISPLAY VALUES CALCULATION paragraph the procedure of the analogue outputs determining is presented in details.

  • Page 37: Secu" Menu

    User manual - METER SRP-946 “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 38: Edit" Parameter

    User manual - METER SRP-946 The access to registers no 05h and 06h 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 39: Menu Structure

    User manual - METER SRP-946 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 40 User manual - METER SRP-946 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 41: The Alarm Led

    User manual - METER SRP-946 8. THE ALARM LED The ALARM LED (F) 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 42: Linear Characteristic

    User manual - METER SRP-946 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 43: Square Root Characteristic

    User manual - METER SRP-946 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 44: Volume Characteristics Of A Cylindrical Tank

    User manual - METER SRP-946 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 45: Examples Of Calculations

    User manual - METER SRP-946 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 46 User manual - METER SRP-946 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 47 User manual - METER SRP-946 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 48 User manual - METER SRP-946 „ 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 49 User manual - METER SRP-946 I [mA] Figure 10.7 The volume characteristic of tank depending on input current in 4÷20mA range. Example 9 : Analogue output value calculation Lets assume that we have active current output and its parameters are: “modE”...

  • Page 50: The Modbus Protocol Handling

    User manual - METER SRP-946 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 51 User manual - METER SRP-946 Register Write Range Register description “CHAr” parameter in “InPt” menu (characteristic type) 0 - linear ; 1 - square; 2 - square root; 3 - user defined; 4 - volume 0 ÷ 5 characteristics of a cylindrical tank in the vertical position; 5 - volume characteristics of a cylindrical tank in the horizontal position 0 ÷...
  • Page 52 User manual - METER SRP-946 Register Write Range Register description “t h2” parameter in “InPt” menu, no decimal point included – lower see descr. word “t h3” parameter in “InPt” menu, no decimal point included – higher see descr. word “t h3”...
  • Page 53 User manual - METER SRP-946 Register Write Range Register description “toFF” parameter in “rEL1” menu, expressed in tenth of seconds 0 ÷ 999 or tenth of minutes depend on “unit” parameter - register no. 43h) “unit” parameter in “rEL1” menu: 0 ÷...
  • Page 54 User manual - METER SRP-946 Register Write Range Register description “t on” parameter in “rEL3” menu, expressed in tenth of seconds or 0 ÷ 999 tenth of minutes depend on “unit” parameter - register no. 59h) “toFF” parameter in “rEL3” menu, expressed in tenth of seconds 0 ÷...
  • Page 55 User manual - METER SRP-946 Register Write Range Register description “HdiS” parameter in “HOLd” menu: 0 ÷ 1 0 - “rEAL” mode ; 1 - “HOLd” mode “H r1” parameter in “HOLd” menu 0 ÷ 1 0 - “rEAL” mode ; 1 - “HOLd” mode “H r2”...
  • Page 56 User manual - METER SRP-946 Register Write Range Register description “OUtL” parameter in “OUtP” menu, no decimal point included – see descr. higher word “OUtL” parameter in “OUtP” menu, no decimal point included – see descr. lower word “OUtH” parameter in “OUtP” menu, no decimal point included –...

  • Page 57: 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-946 device address = 01h: ADDR FUNC REG H,L COUNT H,L...
  • Page 58 User manual - METER SRP-946 b) The answer (if an error occur): ADDR FUNC ERROR CRC L,H ERROR - error code = 60h, bottom border of the measurement range is exceeded 2. Read of device ID code ADDR FUNC REG H,L...

  • Page 59: Default And User's Settings List

    User manual - METER SRP-946 5. Read of the registers 1, 2 and 3 in one message (example of reading a number of registries in one frame): ADDR FUNC REG H,L COUNT H,L CRC L,H COUNT L - the count of being read registers (max.16)
  • Page 60 User manual - METER SRP-946 Desc. Parameter Description Default value User's value page toFF Turn off delay of relay R2 unit Unit of “t on”, “toFF” parameters of relay R2 Reaction for critical situation of relay R2 Parameters of relay R3 operation (“rEL3” menu)
  • Page 61 User manual - METER SRP-946 Desc. Parameter Description Default value User's value page t h1 Height (length) first part of the tank 00.00 t h2 Height (length) second part of the tank 00.00 t h3 Height (length) third part of the tank 00.00...
  • Page 62 User manual - METER SRP-946 Desc. Parameter Description Default value User's value page modE Kind of detected changes norm Minimum detected change timE Maximum time of peak displaying HdiS The type of displayed value HOLd H r1 Source of relay R1, and LED R1 control...

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