Simex SRT-94 User Manual
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Simex SRT-94 User Manual

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Input type: Pt100/500/1000
•
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.
2018.12.20
User manual
METER
SRT-94
Assisting the automation
industry since 1986
SRT-94_INSSXEN_v.2.10.001

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Summary of Contents for Simex SRT-94

  • Page 1 Assisting the automation industry since 1986 User manual METER SRT-94 Input type: Pt100/500/1000 • 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 SRT-94 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............................8 4.3. CONNECTION METHOD.........................10 4.4. MAINTENANCE..........................17 5. FRONT PANEL DESCRIPTION........................17 6. PRINCIPLE OF OPERATION........................18 6.1. MEASUREMENT MODE........................18...

  • Page 3: Basic Requirements And User Safety

    User manual - METER SRT-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

    2. GENERAL CHARACTERISTICS The SRT-94 meter is equipped with Pt 100/Pt 500/Pt 1000 type input, with automatic connection recognition (three or four wire sensor). The measurement range spans from -100 °C to +600 °C, and input is fully linearised accordingly to PN-EN60751+A2:1999 standard.

  • Page 5: Technical Data

    User manual - METER SRT-94 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 SRT-94 Baud rate 1200 bit/s ÷ 115200 bit/s Display LED, 4 digit, 20mm height, red or (depending on version) LED, 4 digit, 20mm height, green Data memory non-volatile memory, EEPROM type Protection level IP 65 optional version with panel cut-out sealing available...

  • Page 7: Device Installation

    User manual - METER SRT-94 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. In order to take full advantage of these characteristics installation of the unit must be conducted correctly and according to the local regulations.

  • Page 8: Assembly

    User manual - METER SRT-94 4.2. ASSEMBLY - The unit is designed for mounting inside housings (control panel, switchboard) insuring appropriate protection against surges and interference. Metal housings must be connected to ground in a way that complies with the governing regulations.
  • Page 9 User manual - METER SRT-94 92 mm max. 5 mm Figure 4.2. Allowable mounting hole dimensions 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...

  • Page 10: Connection Method

    User manual - METER SRT-94 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 11 User manual - METER SRT-94 – Use of screened signal cables is recommended. Signal cable screens should be connected to the earthing only at one of the ends of the screened cable. – In the case of magnetically induced interference the use of twisted pair of signal cables is recommended.
  • Page 12 User manual - METER SRT-94 RS - 485 Power +24V +5%, -10% supply max = 100mA DATA+ (optional) DATA- (depending on version) 5 6 7 8 9 10 11 12 13 14 15 17 18 19 n.c. (optional) (optional) (optional) OC1 ÷...
  • Page 13 User manual - METER SRT-94 Passive, isolated Power RS - 485 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 17 18 19 n.c.
  • Page 14 User manual - METER SRT-94 Power RS - 485 ACTIVE +24V +5%, -10% supply voltage output max = 100mA DATA+ (optional) DATA- (depending on version) 5 6 7 8 9 10 11 12 13 14 15 17 18 19 n.c. n.c.
  • Page 15 User manual - METER SRT-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 4.15. 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 SRT-94 10 11 10 11 Logic controller LED 10 mA voltage input 24 V Figure 4.17. Example of OC-type outputs connection ACTIVE current output Logic controller current input 0-20 mA Figure 4.18. Example of active current outputs connection...

  • Page 17: Maintenance

    User manual - METER SRT-94 ACTIVE voltage output Logic controller voltage input 0 - 10V Figure 4.20. Example of active voltage outputs connection (for device with active voltage output only) 4.4. MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user.

  • Page 18: Principle Of Operation

    User manual - METER SRT-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 19: Detection Of The Peak Values

    User manual - METER SRT-94 6.2. DETECTION OF THE PEAK VALUES The SRT-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 20 User manual - METER SRT-94 state of relay/LED ”SEtP” parameter zone B zone A measure ”HYSt” parameter Figure 6.2. 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 21: One Threshold Mode

    User manual - METER SRT-94 6.3.1. One threshold mode Figure 6.4 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 22: Two Thresholds Mode

    User manual - METER SRT-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 6.4 a, d, e).

  • Page 23: Device Programming

    User manual - METER SRT-94 Figure 6.5 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 24: Parameters Edition

    User manual - METER SRT-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 25: Switch Parameters ("List" Type)

    User manual - METER SRT-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 26: Rel1" Menu

    User manual - METER SRT-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 27 User manual - METER SRT-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 28: Beep" Menu

    User manual - METER SRT-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 29 User manual - METER SRT-94 For passive current output: ”oFF” - current output disabled, “4-20” - current output enabled with 4 ÷ 20 mA mode, ”modb” - current output controlled via RS-485 interface. For active voltage output: ”oFF” - voltage output disabled, ”0-5”...

  • Page 30: Bri" Parameter

    User manual - METER SRT-94 In example on page 35 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 31: Secu" Menu

    User manual - METER SRT-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 32: Edit" Parameter

    User manual - METER SRT-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 33: Menu Structure

    User manual - METER SRT-94 7.4. MENU STRUCTURE Measurement mode Press and hold at least 2 seconds MENU MENU 4-digit user password entering (if it is different from „0000”) 0 _ _ _ ENTER ENTER ENTER Parameter MENU rEL1 SEtP...
  • Page 34 User manual - METER SRT-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 35: The Alarm Led

    User manual - METER SRT-94 8. THE ALARM LED Alarm LED (AL) lights in cases: • exceeding of permissible measurement range • detection of sensor malfunction (shortcut or break of measurement circuit) 9. ANALOGUE OUTPUT VALUE CALCULATION Let the current output parameters be: “modE”...

  • Page 36: The Modbus Protocol Handling

    User manual - METER SRT-94 10. 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 37 User manual - METER SRT-94 Register Write Range Register description “bAud” parameter in “rS” menu (baud rate); 0 ÷ 7 0 - 1200 baud; 1 - 2400 baud; 2 - 4800 baud; 3 - 9600 baud; 4 - 19200 baud; 5 - 38400 baud; 6 - 57600 baud; 7 - 115200 baud “mbAc”...
  • Page 38 User manual - METER SRT-94 Register Write Range Register description “modE” parameter in “rEL2” menu: 0 ÷ 5 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode; 4 - “out” mode; 5 - “modb” mode “t on”...
  • Page 39 User manual - METER SRT-94 Register Write Range Register description “PEA” parameter in “HOLd” menu (minimum detectable change, no 0 ÷ 9999 decimal point included) “timE” parameter in “HOLd” menu, maximum peaks' (or drops') 0 ÷ 199 display time expressed in seconds “HdiS”...

  • Page 40: Transmission Errors Description

    User manual - METER SRT-94 Register Write Range Register description “AL” parameter in “OUtP” menu (active voltage output value on critical exception): 0 - no change; 1 - 11 V; 2 - 5.5; 3 - 1.2 V; 0 ÷ 5 4 - 0.6 V;...

  • Page 41: Examples Of Query/Answer Frames

    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), SRT-94 device address = 01h: ADDR FUNC REG H,L COUNT H,L...
  • Page 42 User manual - METER SRT-94 3. Change of the device address from 1 to 2 (write to reg. 20h) ADDR FUNC REG H,L DATA H,L CRC L,H DATA H - 0 DATA L - new device address (2) The answer (the same as the message):...

  • Page 43: Default And User's Settings List

    User manual - METER SRT-94 11. 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 44 User manual - METER SRT-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 45 User manual - METER SRT-94 Desc. Parameter Description Default value User's value page Lo r Extension of the bottom of the nominal output 5.0 (%) range Hi r Extension of the top of the nominal output range 5.0 (%) Voltage output value on critical exception 11.0 (V)
  • Page 46 User manual - METER SRT-94...
  • Page 47 User manual - METER SRT-94...
  • Page 48 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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