Table of Contents
Related Manuals for Bender VMD421H
Summary of Contents for Bender VMD421H
- Page 1 Manual VMD421H Voltage and frequency monitor for undervoltage, overvoltage, underfrequency and overfrequency monitoring in 3(N)AC systems of 70...500 V Software version D239 V2.3x VMD421H_D00138_02_M_XXEN.pdf/06.2021 Manual EN...
- Page 2 Londorfer Str. 65 • 35305 Grünberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: info@bender.de • www.bender.de © Bender GmbH & Co. KG All rights reserved. Reprinting only with permission of the publisher. Subject to change! Photos: Bender archive and Bendersystembau archive...
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Page 3: Table Of Contents
Table of content 1. Important information ....................5 How to use this manual ....................5 Technical support: service and support ..............5 1.2.1 First level support ....................5 1.2.2 Repair service ......................6 1.2.3 Field service ....................... 6 Training courses ....................... 6 Delivery conditions ...................... - Page 4 6.5.11 Querying device information ................36 6.5.12 Querying the history memory ................36 Commissioning ......................36 Preset function/Factory settings ................37 7. Technical data VMD421H ..................39 Tabular data ........................39 Standards, approvals and certifications ............... 42 Ordering information ....................42 Change log ........................
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Page 5: Important Information
1.2 Technical support: service and support For commissioning and troubleshooting Bender offers: 1.2.1 First level support Technical support by phone or e-mail for all Bender products • Questions about specific customer applications • Commissioning •... -
Page 6: Repair Service
**Mo-Thu 7.00 am - 8.00 pm, Fr 7.00 am - 13.00 pm 1.3 Training courses Bender is happy to provide training regarding the use of test equipment. The dates of training courses and workshops can be found on the Internet at www.ben- der.de/en ->... -
Page 7: Delivery Conditions
ZVEI (Zentralverband Elektrotechnik- und Elektronikindustrie e.V., (German Elec- trical and Electronic Manufacturers' Association) also applies. Conditions of sale and delivery can be obtained from Bender in printed or electronic for- mat. 1.5 Inspection, transport and storage Inspect the dispatch and equipment packaging for damage, and compare the contents of the package with the delivery documents. -
Page 8: Disposal
13th August 2005 must be taken back by the manufacturer and disposed of properly. For more information on the disposal of Bender devices, refer to our homepage at www.bender.de/en -> Service & support. -
Page 9: Safety Instructions
The European standard EN 50110 can be used as a guide. 2.3 Intended use The voltage monitor VMD421H monitors 3(N)AC systems in the frequency range of 15…460 Hz for undervoltage, overvoltage, underfrequency and overfrequency. The devices are designed for the nominal voltage range U = 70…500 V. - Page 10 Safety instructions VMD421H_D00138_02_M_XXEN.pdf/06.2021...
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Page 11: Function
3. Function 3.1 Device features • Undervoltage and overvoltage monitoring in 3(N)AC systems • Preset function: Automatic response value setting for undervoltage and overvoltage, < U and > U as well as for underfrequency and overfrequency < f and > f •... -
Page 12: Fast Commissioning For Un = 400 V, 50 Hz
3. When conditions 1 and 2 are fulfilled, connect the voltage monitor to the three-phase system to be monitored according to the wiring diagram (page 19). The following pre-defined response values will be set automatically: VMD421H Preset operating Response value... -
Page 13: Preset Function
+ 1 Hz Response value underfrequency ( < f) at 16.7 Hz, 50 Hz, 60 Hz: f - 1 Hz Response value underfrequency ( < f) at 400 Hz: f - 1 Hz Preset VMD421H Preset Response Response Measuring principle... -
Page 14: Manual Self Test
3.7 Malfunction In the event of an internal malfunction, all three LEDs flash. The display shows an error code (E01…E32). In such a case please contact the Bender Service. 3.8 Fault memory The fault memory can be enabled, disabled or set to continuous mode (con). If the fault memory is set to "con"... -
Page 15: Password Protection (On, Off)
If password protection has been enabled (on), settings can only be made subject to the correct password being entered (0...999). If you cannot operate your device because you cannot remember your password, please contact info@bender-service.com. 3.12 Factory settings FAC After restoring the factory settings, all settings previously changed are reset to the state upon delivery. -
Page 16: Frequency Alarm In Case Of Measuring Voltage Failure
Function The fault shown below as an example for K1 starts during the S.AL phase: S.AL The fault shown below as an example for K1 starts after the S.AL phase: S.AL 3.16 Frequency alarm in case of measuring voltage failure (Menu ->... -
Page 17: Installation And Connection
4. Installation and connection Only qualified personnel are permitted to carry out the work necessary to install, commission and run a device or system. Risk of fatal injury due to electric shock! Touching live parts of the system carries the risk of: •... - Page 18 Installation and connection VMD421H_D00138_02_M_XXEN.pdf/06.2021...
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Page 19: Wiring
5. Wiring Connect the device according to the wiring diagram. Terminal Connections L1, L2, L3, (N) Connection to the system to be monitored 11, 12, 14 Alarm relay K1 21, 22, 24 Alarm relay K2 VMD421H_D00138_02_M_XXEN.pdf/06.2021... - Page 20 Wiring VMD421H_D00138_02_M_XXEN.pdf/06.2021...
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Page 21: Operation And Settings
Operation and settings 6. Operation and settings 6.1 Display elements in use The meaning of the display elements in use is listed in the table below. Element Function Display elements in use Conductor L1…L3 (phase), L1…L3N neutral conductor Asy, % Asymmetry in % <... -
Page 22: Function Of The Operating Elements
Operation and settings 6.2 Function of the operating elements Elemen User interface Function Power On LED, green Menu item LEd deactivated: AL1, LED alarm 1 lights (yellow): response value > U exceeded AL1 AL2 LED alarm 2 lights (yellow): below response value <... -
Page 23: Menu Structure
Operation and settings 6.3 Menu structure All adjustable parameters are listed in the columns Menu item and Adjustable parame- ter. A display-like representation is used to illustrate the parameters in the column Menu item. Different alarm categories can be assigned to the alarm relays K1, K2 via the submenus r1, r2. -
Page 24: Display In Standard Mode
Operation and settings Menu Activati Menu Adjustable parameter Menu structure menu item t on 1 Response delay K1 t on 2 Response delay K2 (timing con- trol) Start-up delay t off Delay on release K1/K2 L1L2L3 - Measuring principle: phase-to-phase voltage 3Ph, phase-to- (device con- neutral voltage 3n... -
Page 25: Display In Menu Mode
Operation and settings 6.5 Display in menu mode 6.5.1 Parameter query and setting: overview Adjustable parameter Menu item Query and set response values: – Undervoltage: < U (AL2) – Overvoltage: > U (AL1) – Hysteresis of the voltage response values: Hys U –... - Page 26 Operation and settings t >1,5 s t > 1,5 s t < 1,5 s t < 1,5 s t > 1,5 s Parameter setting An example is given below on how to change the alarm response value for overvoltage > U. Proceed as follows: 1.
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Page 27: Setting The Response Values For Undervoltage And Overvoltage
Operation and settings 6.5.2 Setting the response values for undervoltage and overvoltage - Value of the undervoltage (< U) - Value of the overvoltage (> U) - Hysteresis (Hys) of the response values < U and > U - Asymmetry (Asy) of the phases - Phase sequence (PHS) counter-clockwise (L) or clockwise (R), in the example below from R to L Setting the response value for undervoltage <... -
Page 28: Setting The Response Values For Underfrequency, Overfrequency And Hysteresis
Operation and settings Setting the asymmetry response value >1,5 s Setting the phase sequence response value 6.5.3 Setting the response values for underfrequency, overfrequency and hysteresis Setting the underfrequency response value < Hz VMD421H_D00138_02_M_XXEN.pdf/06.2021... -
Page 29: Setting The Fault Memory And Operating Mode Of The Alarm Relays
Operation and settings Setting the overfrequency response value > Hz Setting the hysteresis of the frequency response values Deactivating the frequency alarm in case of a measuring voltage failure < < < < 6.5.4 Setting the fault memory and operating mode of the alarm relays Disabling the fault memory >1,5 s VMD421H_D00138_02_M_XXEN.pdf/06.2021... -
Page 30: Assigning Alarm Categories To The Alarm Relays
Operation and settings Setting the alarm relay K1 to N/C operation (n.c.) >1,5 s Setting the alarm relay K2 to N/O operation (n.o.) >1,5 s LEDs AL1/AL2 are intended to indicate the alarm state of K1/K2 >1,5 s 6.5.5 Assigning alarm categories to the alarm relays Undervoltage, overvoltage, underfrequency, overfrequency, asymmetry, phase se- quence and device-related error messages of the voltage monitor can be assigned to the alarm relays K1 (r1, 1) and K2 (r2, 2). - Page 31 Operation and settings Alarm relay K1: assigning the category device error >1,5 s Alarm relay K1: assigning the category undervoltage >1,5 s Alarm relay K1: deactivating the category overvoltage >1,5 s VMD421H_D00138_02_M_XXEN.pdf/06.2021...
- Page 32 Operation and settings Alarm relay K1: deactivating the category asymmetry alarm >1,5 s Deactivating an alarm relay K1/K2) via the menu prevents an alarm being indicated by the respective changeover contact! An alarm will only be indicated by the respective alarm LED (AL1/AL2)! CAUTION This only applies to the out menu setting LEd = off!
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Page 33: Setting Delay Times
Operation and settings 6.5.6 Setting delay times The following delays can be set: • Response delay t (0…300 s) for K1, as well as t (0…300 s) for K2 • Start-up delay t (0…300 s) during device start • Common delay on release t (0…300 s) for K1, K2. -
Page 34: Select Measurement Method
Operation and settings 6.5.7 Select measurement method Use this menu item to select between phase to N (3n) or phase-to-phase (3Ph) measu- rement. If the device has been connected to the neutral conductor and the phase con- ductors, the measurement method can be freely selected. >1,5 s 6.5.8 Factory setting and password protection... -
Page 35: Restoring Factory Settings
Operation and settings c) Disabling the password protection >1,5 s 6.5.9 Restoring factory settings ..6.5.10 Manual activation of the preset function During the operating process, the measuring principle is queried. Select either three- phase-N measurement (3n) or three-phase measurement (3Ph). In the example below, three-phase measurement has been selected. -
Page 36: Querying Device Information
6.6 Commissioning Prior to commissioning, check that the voltage monitor is connected properly. After connecting a brand-new VMD421H to a standard system of U = 400 V, 50 Hz, the response values are automatically set by the internal preset function:... -
Page 37: Preset Function/Factory Settings
Operation and settings 6.7 Preset function/Factory settings During initial commissioning, predefined response values are set automatically depen- ding on U Response value overvoltage (> U): 1.1 U Response value undervoltage (< U): 0.85 U Hysteresis U Underfrequency < Hz Overfrequency > Hz Hysteresis frequency (Hys Hz) 0.2 Hz Frequency alarm in case of... - Page 38 Operation and settings VMD421H_D00138_02_M_XXEN.pdf/06.2021...
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Page 39: Technical Data Vmd421H
7. Technical data VMD421H 7.1 Tabular data ( )* = Factory setting Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Rated voltage ..................................400 V Rated impulse voltage/Pollution degree ........................4 kV / III Protective separation (reinforced insulation) between........(N, L1, L2, L3) - (11, 12, 14) - (21, 22, 24) Voltage test according to IEC 61010-1: (N, L1, L2, L3) - (11, 12, 14) ............................ - Page 40 Technical data VMD421H Underfrequency < Hz ............................10…500 Hz** Overfrequency > Hz ............................10…500 Hz** Resolution of setting 10.0…99.9 Hz..........................0.1 Hz Resolution of setting 100…500 Hz ..........................1 Hz Preset function: = 16.7 Hz / 50 Hz / 60 Hz / 400 Hz ..........15.7 Hz / 49 Hz / 59 Hz / 399 Hz...
- Page 41 Technical data VMD421H Contact data acc. to IEC 60947-5-1: Utilisation category ................... AC 13 AC 14 DC-12 DC-12 DC-12 Rated operational voltage ................230 V 230 V 24 V 110 V 220 V Rated operational current ................. 5 A 0.2 A 0.1 A...
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Page 42: Standards, Approvals And Certifications
Technical data VMD421H Other Operating mode ............................continuous operation Mounting position ....................... vertically, see dimension diagram Degree of protection, internal components (DIN EN 60529) ..................... IP30 Degree of protection, terminals (DIN EN 60529) ........................ IP20 Enclosure material..............................polycarbonate Flammability class................................ UL94 V-0 DIN rail mounting acc. -
Page 43: Index
INDEX Present measured values - Asymmetry 24 Adjustable parameters, list 23 Malfunction 14 - Nominal frequency 24 Alarm 1 LED lights 22 Manual self test 14 - Phase sequence 24 Alarm 2 LED lights 22 Menu - Phase-to-phase voltage 24 Automatic self test 13 - AL (response values) 23 Preset function 13... - Page 44 Londorfer Str. 65 • 35305 Grünberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: info@bender.de • www.bender.de © Bender GmbH & Co. KG All rights reserved. Reproduction only with permission of the publisher. Subject to alterations!