DKS PD72S User Manual

Meter with u/i input

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Radeberger Straße 21 – D-01900 Großröhrsdorf

E-Mail: info@dks-engineering.de

Tel.: +49 35952 4294-65

WEB: https://www.dks-engineering.com

USER MANUAL for

meter with U/I input

PD72S

type:

5.14

firmware version:

or higher

Read the user's manual carefully before starting to use the unit.

Producer reserves the right to implement changes without prior notice.

V.2.02

13.01.2009

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Summary of Contents for DKS PD72S

Page 1 Radeberger Straße 21 – D-01900 Großröhrsdorf E-Mail: info@dks-engineering.de Tel.: +49 35952 4294-65 WEB: https://www.dks-engineering.com USER MANUAL for meter with U/I input PD72S type: 5.14 firmware version: or higher Read the user's manual carefully before starting to use the unit. Producer reserves the right to implement changes without prior notice.
Page 2: Table Of Contents
User manual for meter with U/I input PD72S CONTENTS 1. BASIC REQUIREMENTS AND USER SAFETY ..................3 2. GENERAL CHARACTERISTICS ......................4 3. TECHNICAL DATA ..........................4 4. DEVICE INSTALLATION ......................... 6 4.1. UNPACKING ..........................6 4.2. ASSEMBLY ........................... 6 4.3.
Page 3: Basic Requirements And User Safety
User manual for meter with U/I input PD72S 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 PD72S meter is equipped with one current input 0-20 / 4-20 mA and one voltage input 0-5 / 1-5 / 0-10 / 2-10 V. Current input has additionally overcurrent protection circuit, which protects standard resistor.
Page 5 User manual for meter with U/I input PD72S Display range -999 ÷ 9999, plus decimal point Accepted prolonged input overload: 20 % Outputs (cos ϕ = 1) relay: 0, 1 or 2 NO, 1 A/250 V or OC-type: 0, 1 or 2 30 mA / 30 V...
Page 6: Device Installation
User manual for meter with U/I input PD72S This is a class A unit. In housing 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 7 User manual for meter with U/I input PD72S Place the unit in the mounting hole inserting it from the front side of the panel, and then fix it using the brackets (Figure 4.2). The minimum distances between assembly holes’ axes - due to the thermal and mechanical conditions of operation – are 91 mm x 57 mm (Figure 4.3).
Page 8: Connection Method
User manual for meter with U/I input PD72S Figure 4.3. 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 9 User manual for meter with U/I input PD72S If the unit is equipped with housing, covers and sealing packing, 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 10 User manual for meter with U/I input PD72S Figure 4.5. Terminals description (relay outputs) Figure 4.6. Terminals description (OC-type outputs) All connections must be made while power supply is disconnected! Figure 4.7. Connection of 2-wire current converters...
Page 11 User manual for meter with U/I input PD72S Figure 4.8. Connection of 3-wire current converters Figure 4.9. Connection of voltage converters...
Page 12 User manual for meter with U/I input PD72S Depending on version: 85...230...260 V AC/DC 19...24...50 V ; 16...24...35 V Figure 4.9. 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 to use additional...
Page 13 User manual for meter with U/I input PD72S Figure 4.11. Examples of suppression circuit connection: a) to relay terminals; b) to the inductive load Figure 4.12. Example of OC-type outputs connection...
Page 14: Maintenance
User manual for meter with U/I input PD72S 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 unit operation.
Page 15: Principle Of Operation
User manual for meter with U/I input PD72S 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 16: Detection Of The Peak Values
Configuration of the device (via menu or RS-485 interface) do not stops measures. 6.2. DETECTION OF THE PEAK VALUES The PD72S 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 17: Control Of The Relay Outputs
User manual for meter with U/I input PD72S 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 18: One Threshold Mode
User manual for meter with U/I input PD72S 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. Description: A, B, C, D - points where measured signal exceeds border values (expected value ± allowed deviation) - relays state changes moments: (for “t on”...
Page 19: Two Thresholds Mode
User manual for meter with U/I input PD72S (when input signal stay in zone A or zone B) are lower than parameters “t on” or If t or t “toFF”, the relay will not change his state (see points A and C, Figure 6.6 a, d, e).
Page 20: Device Programming
User manual for meter with U/I input PD72S 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 21: Parameters Edition
User manual for meter with U/I input PD72S 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: •...
Page 22: Switch Parameters ("List" Type)
User manual for meter with U/I input PD72S 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 23: Rel1" Menu
User manual for meter with U/I input PD72S 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 24 User manual for meter with U/I input PD72S “out” - two thresholds mode, relay is turned ON when the input value is bigger than “bigger threshold + HYSt” and lower than “lower threshold – HYSt”, and turned on when the input signal is contained in the second zone.
Page 25: Inpt" Menu
User manual for meter with U/I input PD72S detected, so it is impossible to predict the relay state in that situations. • If parameter „AL” = „on”, the relay will be turned on in the critical situations, even if his parameter “modE” = “noAC”...
Page 26 User manual for meter with U/I input PAC-73S After selection of this option device waits for “ ” and “ ” coordinates of new point. Modification of the coordinates is done accordingly to numerical parameters edition. Coordinate “ ” defines the percentage ratio of input current to selected current range. The “...
Page 27: Bri" Parameter
User manual for meter with U/I input PD72S Figure 7.1 Example of definition of permissible range of input signal - “Lo r” and “Hi r” parameters (“4-20” mode) The “Lo r” parameter is important if input is set to “4-20”, “1-5” or “2-10” mode only, and determines lower border of the permissible range.
Page 28 User manual for meter with U/I input PD72S “SCoL” - basic colour (the second one becomes “active” colour): “grEE” - main colour is green, “rEd” - main colour is red. “C r1”, - control the display colour according to relay (R1, R2 separate) state: “C r2”...
Page 29: Hold" Menu
User manual for meter with U/I input PD72S “CrES” - permission to use any local key to acknowledgement of display colour change. Acknowledgement causes clear of all events generating display colour changes (to active colour), and restores basic colour of the display.
Page 30: Rs" Menu
User manual for meter with U/I input PD72S 7.3.7. “rS” menu This menu is connected with RS-485 interface, and sets his properties: “Addr” - this parameter defines the address of the device, accordingly to Modbus protocol. It can be set in range from 0 to 199. If the value 0 is set then device, responds to frames with address 255 (FFh).
Page 31: Edit" Parameter
User manual for meter with U/I input PD72S 7.3.8. “Edit” parameter This parameter allows to change the edition mode of numerical parameters: “dig” - the change to “by digit” mode, “Slid” - slide change mode. 7.3.9. “dEFS” parameter This setting allows to restore the factory settings of the device. To get the access to this option special password is required: “5465”, next the device displays acknowledge question...
Page 32: Menu Structure
User manual for meter with U/I input PD72S 7.4. MENU STRUCTURE...
Page 33 User manual for meter with U/I input PD72S...
Page 34: The Alarm Led
User manual for meter with U/I input PD72S 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.
Page 35: Linear Characteristic
User manual for meter with U/I input PD72S 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”...
Page 36: Square Root Characteristic
User manual for meter with U/I input PD72S 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”...
Page 37: Examples Of Calculations
User manual for meter with U/I input PD72S Normalized measurement I (for 0-20 mA range) Input current [mA] Figure. 10.4 Example of user defined characteristic 10.2. EXAMPLES OF CALCULATIONS Example 1: Selection of the permissible input range (“4-20” mode) If in “4-20” mode the user sets “Lo r” = 20.0 % and “Hi r” = 10.0 %, then permissible input currents range will be equal: 3.2 mA ÷...
Page 38 User manual for meter with U/I input PD72S =10 mA and I = 0.375 Accordingly to expression on page 35 for linear characteristic: 0.375 × [1200 - (- 300)] ≅ 562 and next, the “Lo C” value is added to the result , so the displayed value: W ≅...
Page 39: The Modbus Protocol Handling
User manual for meter with U/I input PD72S 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 40: List Of Registers
User manual for meter with U/I input PD72S The device parameters and display value are available via RS-485 interface, as HOLDING-type registers (numeric values are given in U2 code) of Modbus RTU protocol. The registers (or groups of the registers) can be read by 03h function, and wrote by 06h (single registers) or 10h (group of the registers) accordingly to Modbus RTU specification.
Page 41 User manual for meter with U/I input PD72S Register Write Range Register description “mbAc” parameter in “rS” menu (permission to write registers 0 ÷ 1 via RS-485 interface); 0 - write denied ; 1 - write allowed Parameters of “SECU” menu (binary format (0 - „oFF”, 1 - „on”): bit 0 - “A r1”...
Page 42 User manual for meter with U/I input PD72S Register Write Range Register description “AL” “rEL2” 0 ÷ 2 parameter in menu: - no changes; - on; - off “ ” parameter in “ ” menu, no decimal point included -999 ÷ 9999...
Page 43: 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), PD72S device address = 01h: ADDR FUNC REG H,L COUNT H,L...
Page 44 User manual for meter with U/I input PD72S 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...
Page 45 User manual for meter with U/I input PD72S 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 46: Default And User's Settings List
User manual for meter with U/I input PD72S 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 30.0...
Page 47 User manual for meter with U/I input PD72S Desc. Parameter Description Default value User's value page C r2 Change display colour after R2 is activated C AL Change display colour after alarm occurs Enable additional threshold while signalisation C Pr...
Page 48 User manual for meter with U/I input PAC-73S Radeberger Straße 21 – D-01900 Großröhrsdorf E-Mail: info@dks-engineering.de Tel.: +49 35952 4294-65 https://www.dks-engineering.com 01-2010...

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