Bender ISOMETER isoGEN423 Manual
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Bender ISOMETER isoGEN423 Manual

Insulation monitoring device
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Manual EN
ISOMETER® isoGEN423
Insulation monitoring device
for unearthed AC, AC/DC, and DC systems up to 3(N)AC, AC 400 V, DC 400 V
Suitable for the application of generators acc. to standard DIN VDE 0100-551
Software version: D0494 V4.xx
isoGEN423_D00221_05_M_XXEN

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Summary of Contents for Bender ISOMETER isoGEN423

  • Page 1 Manual EN ISOMETER® isoGEN423 Insulation monitoring device for unearthed AC, AC/DC, and DC systems up to 3(N)AC, AC 400 V, DC 400 V Suitable for the application of generators acc. to standard DIN VDE 0100-551 Software version: D0494 V4.xx isoGEN423_D00221_05_M_XXEN...
  • Page 2 isoGEN423_D00221_05_M_XXEN...

  • Page 3: Table Of Contents

    Indication of important instructions and information...............5 Signs and symbols............................5 Service and Support............................5 Training courses and seminars........................5 Delivery conditions............................6 Inspection, transport and storage......................6 Warranty and liability.............................6 Disposal of Bender devices..........................6 1.10 Safety..................................7 Function.......................8 Intended use..............................8 Device features..............................8 Functional description........................... 9 2.3.1...
  • Page 4 Table of contents Operation......................18 Operating and display elements......................18 Menu overview...............................20 Displaying measured values........................21 Setting the response values (AL)......................22 4.4.1 Response values overview.........................22 4.4.2 Setting the insulation resistance parameters..................22 4.4.3 Setting parameters for undervoltage and overvoltage..............22 Configuring fault memory, alarm relays, and interfaces (out)............23 4.5.1 Configuring the relays..........................23 4.5.2...

  • Page 5: General Information

    Recycling RoHS directives Service and Support Information and contact details about customer service, repair service or field service for Bender devices are available on the following website: Fast assistance | Bender GmbH & Co. KG. Training courses and seminars Regular face-to-face or online seminars for customers and other interested parties: www.bender.de >...

  • Page 6: Delivery Conditions

    General information Delivery conditions The conditions of sale and delivery set out by Bender GmbH & Co. KG apply. These can be obtained in printed or electronic format. The following applies to software products: ‘Software clause in respect of the licensing of standard software as part of deliveries,...

  • Page 7: Safety

    ISOMETER® isoGEN423 1.10 Safety If the device is used outside the Federal Republic of Germany, the applicable local standards and regulations must be complied with. In Europe, the European standard EN 50110 applies. DANGER Risk of fatal injury due to electric shock! Touching live parts of the system carries the risk of: •...

  • Page 8: Function

    • Fault memory can be activated • Password protection against unauthorised changing of parameters • RS-485 (galvanically isolated) including the following protocols: – BMS (Bender measuring device interface) for the data exchange with other Bender devices – Modbus RTU – IsoData (for continuous data output)

  • Page 9: Functional Description

    ISOMETER® isoGEN423 Functional description 2.3.1 GEn and dc operating modes The GEn mode is used in AC/DC or DC systems. In this mode, the device complies with the maximum response time ≤ 1 s for C ≤ 1 F and R ≤...

  • Page 10: Isolation From The System To Be Monitored

    Function 2.3.3 Isolation from the system to be monitored If the device has no supply voltage U or is in stop mode, it decouples terminals 'L1/+' and 'L2/–' internally from the IT system being monitored. In this case, an insulation resistance measurement up to maximally DC 500 V can be carried out using an insulation tester.

  • Page 11: Malfunction

    ('err') will be signalled, 'E.xx' appears on the display as an identifier for error type xx, and the LEDs 'ON'/'AL1'/'AL2' will flash. Please contact Bender Service, if the error occurs again after the device has been restarted or the factory settings have been restored.

  • Page 12: Signalling Assignment Of The Alarm Relays K1/K2

    Function 2.3.8 Signalling assignment of the alarm relays K1/K2 The notifications for 'device error', 'insulation fault', 'undervoltage/overvoltage fault', 'device test' and 'device start with alarm' can be assigned to the alarm relays via the 'out' menu. An insulation fault is indicated by the messages '+R1', '–R1', '+R2' and '–R2'. Messages '+R1' and '+R2' indicate an insulation fault assigned to conductor L1/+, and the messages '–R1' and '–R2' indicate an insulation fault assigned to conductor L2/–.

  • Page 13: Password Protection (On, Off)

    The ISOMETER® uses the serial hardware interface RS-485 with the following protocols: • BMS The BMS protocol is an essential component of the Bender measuring device interface (BMS bus protocol). Data transmission generally makes use of ASCII characters. • Modbus RTU Modbus RTU is an application layer messaging protocol, and it provides master/slave communication between devices that are connected via bus systems and networks.
  • Page 14 Function • IsoData The ISOMETER® sends an ASCII data string with a cycle of approximately 1 second. Communication with the ISOMETER® in this mode is not possible, and no additional sender may be connected via the RS-485 bus cable. The ASCII data string for the ISOMETER® is described in chapter 5.2. The parameter address, baud rate and parity for the interface protocols are configured in the 'out' menu.

  • Page 15: Installation, Connection And Commissioning

    ISOMETER® isoGEN423 Installation, connection and commissioning Dimensions 45 70,5 31,1 47,5 74,5 Figure: Dimension diagram Mounting Click! & 2 x Ø M4 Click! Figure: DIN rail mounting (left) or screw mounting (right) Connection DANGER Risk of fatal injury due to electric shock! Touching live parts of the system carries the risk of: •...

  • Page 16: Commissioning

    Installation, connection and commissioning L1/+ Terminal Connections L2/- A1, A2 Connection to the supply voltage U fuse (line protection): If supplied from an IT system, both lines have to be protected by a fuse.* L1/+ L2/- E, KE Connect each terminal separately to PE: The same wire cross section as for 'A1', 'A2' E KE is to be used.
  • Page 17 ISOMETER® isoGEN423 Start a manual self test by pressing the test button 'T'. Whilst the test button is pressed and held down for > 1.5 s, all display elements available for this device are shown. During the test, the 'tES' symbol flashes. Any internal malfunctions detected are shown on the display as error codes (see see chapter 2.3.6.1).

  • Page 18: Operation

    Operation Operation Operating and display elements Device front Operating elements Function Device is running Prewarning Overvoltage Alarm Undervoltage Up and down buttons – For navigating up or down in the menu settings. – For increasing or decreasing values. Test button (press > 1.5 s) Reset button (press >...
  • Page 19 ISOMETER® isoGEN423 Display Display elements Function Nominal system voltage U Amperage I Insulation resistance R Impedance Z System leakage capacitance C Monitored conductors L1 L2 Voltage type DC Pulse symbol: error-free measured value update Voltage type AC auto Automatic self test active °C Measured values and units μ...

  • Page 20: Menu Overview

    Operation Menu overview Measurement display Menu selection Parameter selection > < 1.5 s > > . . . 1.5 s 1.5 s < t > 5 Min. < > 1.5 s R [k ] C [µF] U L1 L2 [V] U L1 [V] <...

  • Page 21: Displaying Measured Values

    ISOMETER® isoGEN423 Displaying measured values Overview Display Description Insulation resistance 1 k … 2 M Resolution 1 k ✓ ± R k The '+' or '–' sign appears, when an error of R < 100 k is mainly detected at L1/+ or L2/–...

  • Page 22: Setting The Response Values (Al)

    Operation Changing the standard display oder U can be set as the standard display: Use the up or down buttons to go from the standard display to the display you want. Confirm with Enter. Setting the response values (AL) 4.4.1 Response values overview Display Activation...

  • Page 23: Configuring Fault Memory, Alarm Relays, And Interfaces (Out)

    ISOMETER® isoGEN423 Configuring fault memory, alarm relays, and interfaces (out) Call up menu 'out' to configure fault memory, alarm relays, and interfaces. 4.5.1 Configuring the relays Relay K1 Relay K2 Description Display Display Operating n.c. n.c. mode of the relay n.c./n.o. FAC Factory settings Customer settings 4.5.2...

  • Page 24: Activating Or Deactivating Fault Memory

    Operation K1 'r1' K2 'r2' LEDs Alarm description Display Display S.AL S.AL Device start with alarm FAC Factory settings Customer settings LED off LED flashes LED on 4.5.3 Activating or deactivating fault memory Display Description Memory function for alarm messages (fault memory) FAC Factory settings Customer settings 4.5.4...

  • Page 25: Setting Device Control Parameters (Set)

    Test of the system connection during device test S.Ct Device test during device start Restore factory settings For Bender Service only FAC Factory settings Customer settings Reset to factory settings All settings with the exception of the interface parameters are reset to the factory settings.

  • Page 26: Showing And Deleting The History Memory

    Operation Showing and deleting the history memory ADVICE The history memory saves the measured values for the first fault only. To this end, the history memory must be empty. Show history memory Call up 'HiS' menu and go up or down. Delete history memory Call up 'HiS' menu, go to 'Clr' and confirm.

  • Page 27: Data Access Via Interfaces

    ISOMETER® isoGEN423 Data access via interfaces Data access using the BMS protocol The BMS protocol is an essential component of the Bender measuring device interface (BMS bus protocol). Data transmission generally makes use of ASCII characters. BMS channel no. Operation value...

  • Page 28: Data Access Using The Modbus Rtu Protocol

    Data access via interfaces String Beschreibung 123456; Reserved Nominal system voltageU trueRMS +1234; Nominal system voltage type: AC or unknown: ' ' | DC: '+' / '–' Residual voltage U +1234; Residual voltage U +1234; +123; Insulation fault location –100 … +100 [%] 123456 reserviert Alarm message [hexadecimal] (without leading '0x')

  • Page 29: Writing The Modbus Register (Parameter Setting)

    ISOMETER® isoGEN423 Command of the master to the ISOMETER® In the following example, the master of the ISOMETER® requests the content of register 1003 using address 3. The register contains the channel description of measuring channel 1. Byte Name Example Byte 0 ISOMETER®...

  • Page 30: Exception Code

    Data access via interfaces The ISOMETER® answers the master Byte Name Example Byte 0 ISOMETER® Modbus address 0x03 Byte 1 Function code 0x10 Byte 2, 3 Start register 0x0BBB Byte 4, 5 Number of registers 0x0001 Byte 6, 7 CRC16 checksum 0x722A 5.3.3 Exception code...

  • Page 31: Modbus Register Assignment

    ISOMETER® isoGEN423 5.3.4 Modbus register assignment Depending on the device condition, the information in the registers is the measured value without alarm; the measured value with alarm 1, the measured value with alarm 2, or only the device error. For more information see AT&T = Alarm type and test type (internal/external), page 35.
  • Page 32 Data access via interfaces Register Property Description Format Unit Value range 3006 Reserved Alarm value resistance 3007 UINT 16 5 … R1 measurement 'R2' 0 = Inactive Activation alarm value 3008 UINT 16 undervoltage 'U <' 1 = Active Alarm value 3009 UINT 16 10 …...
  • Page 33 ISOMETER® isoGEN423 Register Property Description Format Unit Value range 0 = OFF Repetition time 3021 'test' for automatic UINT 16 1 = 1 device test 2 = 24 h 3022 Reserved 0 = GEn System and 3023 UINT 16 function selection 1 = dc Test of the system 0 = Inactive...

  • Page 34: Device-Specific Data Types

    Data access via interfaces Register Property Description Format Unit Value range 9824 Software version: Day UINT 16 9825 Modbus driver version UINT 16 RO Read only RW Read/Write WO Write only 5.3.5 Device-specific data types Device name The data format of the device name consists of ten Words with two ASCII characters each. 0x00 0x01 0x02...
  • Page 35 ISOMETER® isoGEN423 AT&T = Alarm type and test type (internal/external) Meaning Test Test Reserved Reserved Reserved Alarm Fault external internal Alarm No alarm type Prewarning Device error Reserved Warning Alarm Reserved Reserved Test No test Internal test External test • Bits 0 to 2: coding for the alarm type •...
  • Page 36 Data access via interfaces R&U = Range and unit Meaning Unit Invalid (init) No unit Baud °C °F Second Minute Hour Month Range of validity Actual value The actual value is lower The actual value is higher Invalid value • Bits 0 to 4: coding for the unit •...
  • Page 37 ISOMETER® isoGEN423 Alarm assignment of the relays Several alarms can be assigned to each relay. For the assignment to each relay, a 16-bit register is used with the bits described below. The following table applies to relay 1 and relay 2, in which 'x' stands for the relay number. A set bit activates the specified function.
  • Page 38 Data access via interfaces Channel descriptions Value Description of measured value / message Comments 1 (0x01) Insulation fault 71 (0x47) Insulation fault Insulation resistance R 76 (0x4C) Voltage Measured value in V 77 (0x4D) Undervoltage 78 (0x4E) Overvoltage 82 (0x52) Capacitance Measured value in F 86 (0x56)
  • Page 39 ISOMETER® isoGEN423 Value Description of parameters 1010 (0x3F2) Time 1009 (0x3F1) Multiplication factor [*] 1008 (0x3F0) Division factor [/] 1007 (0x3EF) Baud rate isoGEN423_D00221_05_M_XXEN...

  • Page 40: Technical Data

    Technical data Technical data Tabular representation ( )* = Factory settings Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Definitions Measuring circuit (IC1) L1/+, L2/– Supply circuit (IC2) A1, A2 Output circuit (IC3) 11, 14, 24 Control circuit (IC4) E, KE, T/R, A, B Rated voltage 400 V Overvoltage category III...
  • Page 41 ISOMETER® isoGEN423 Supply voltage Supply voltage U AC 100…240 V / DC 24…240 Tolerance of U –30 …+15 % Frequency range of U 47…63 Hz Power consumption ≤ 3 W, ≤ 9 VA Monitored IT system Nominal system voltage U 3(N)AC, AC, DC 0…400 V Tolerance of U +25 %...
  • Page 42 Technical data Time response Response·time t at R = 0.5 x R and C =1 F in ≤ 10 s accordance with IEC 61557-8 Start-up delay t 0…10 s (0 s)* Response delay t 0…99 s (0 s)* Delay on release t 0…99 s (0 s)* Displays, memory Indication...
  • Page 43 ISOMETER® isoGEN423 Switching elements Switching elements 2 x 1 N/O contacts, common terminal 11 Relay mode NC operation/NO operation (NO operation)* Electrical endurance at rated operating conditions 10,000 operating cycles Contact data acc. to IEC 60947-5-1 Utilisation category AC-12 / AC-14 / DC-12 / DC-12 / DC-12 Rated operational voltage 230 V / 230 V / 24 V / 110 V / 220 V Rated operational current...
  • Page 44 Technical data Connection Screw-type terminals Nominal current ≤ 10 A Tightening torque 0.5…0.6 Nm (5…7 lb-in) Conductor sizes AWG 24-12 Stripping length 8 mm Rigid/flexible 0.2…2.5 mm Flexible with ferrules with/without plastic sleeve 0.25…2.5 mm Multi-conductor rigid /flexible 0.2…1.5 mm flexible with ferrules without plastic sleeve 0.25…1.5 mm flexible with TWIN ferrules with plastic sleeve...

  • Page 45: Standards And Certifications

    The ISOMETER® was developed in compliance with the standards specified in the Declaration of Conformity. EU Declaration of Conformity Hereby, Bender GmbH & Co. KG declares that the device covered by the Radio Directive complies with Directive 2014/53/EU. The full text of the EU Declaration of Conformity is available at the following Internet address: https://www.bender.de/fileadmin/content/Products/CE/CEKO_isoXX425.pdf...
  • Page 46 Londorfer Straße 65 Alle Rechte vorbehalten. 35305 Grünberg Nachdruck und Vervielfältigung nur mit Germany Genehmigung des Herausgebers. © Bender GmbH & Co. KG, Germany Tel.: +49 6401 807-0 All rights reserved. Subject to change! The specified info@bender.de Reprinting and duplicating only with standards take into account the edition www.bender.de...

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