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Bender CMD420-DM, Manual

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Bender CMD420-DM Manual Download Page 32

Operation and configuration

32

CMD420_421-DM_D00224_01_M_XXEN/08.2016

Parameter settings

An example is given below on how to change the alarm response value for 
overcurrent > I1. It is presumed that the option overcurrent (HI) has been se-
lected in the SEt/I menu (factory setting). Proceed as follows:

1. Keep the "MENU / Enter" button pressed for more than 1.5 seconds. 

The flashing short symbol AL appears on the display.

2. Confirm with Enter. The parameter response value I2 flashes, in addi-

tion the associated overcurrent value appears.

3. Use the Down button to select the parameter response value I1. The 

parameter I1 flashes, in addition the associated percentage value for 
prewarning of I2 appears.

4. Confirm with Enter. The current value for prewarning appears on the 

flashing display.

5. Use the Up or Down button to set the appropriate prewarning value. 

Confirm with Enter.  I1 flashes.

6. You can exit the menu by:

–    pressing the Enter button for more than 1.5 seconds to reach the 

next higher level or

–    selecting the menu item ESC and confirming with Enter to reach the 

next higher level.

5.5.2

Changeover from overcurrent to undercurrent mode or to 
window mode

The operating mode can be set in the SEt/I12 menu using the parameters HI, 
Lo and In. By default, overcurrent operation (HI) is set. Refer to page 36 for a 
detailed description on how to change over to the window mode.

The currently active segments of the display which can be
configured are flashing! These segments are highlighted by
an oval in the illustrations below. Press and hold down the
"MENU button" > 1.5 s to enter menu mode.

Summary of Contents for CMD420-DM

Page 1: ... Current monitoring device with analogue output signal for monitoring of 3AC currents with current transformer for overcurrent or undercurrent or in window mode for overcurrent and undercurrent Software version CMD420 DM D287 V1 1x Software version CMD421 DM D294 V1 1x ...

Page 2: ...many Londorfer Strasse 65 35305 Gruenberg 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 archives ...

Page 3: ...arranty and liability 11 1 7 Disposal 12 2 Safety instructions 13 2 1 General safety instructions 13 2 2 Work activities on electrical installations 13 2 3 Intended use 14 2 4 Information about factory setting 14 3 Function 15 3 1 Device features 15 3 2 Description of function 15 3 2 1 Window discriminator function 16 3 2 2 Automatic self test 16 3 2 3 Manual self test 16 3 2 4 Malfunction 17 3 2 ...

Page 4: ...ructure 27 5 4 Display in standard mode 29 5 5 Display in menu mode 30 5 5 1 Parameter query and setting overview 30 5 5 2 Changeover from overcurrent to undercurrent mode or to window mode 32 5 5 3 Response value setting for overcurrent 33 5 5 4 Setting the fault memory to con mode 34 5 5 5 Selecting the type of analogue interface 34 5 5 6 Set the 100 reference for the analogue interface 35 5 5 7...

Page 5: ...4_01_M_XXEN 08 2016 6 Technical data 41 6 1 Data in tabular form 41 6 2 Current and voltage curves of the analogue interface 46 6 3 Standards approvals and certifications 47 6 4 Label for modified versions 47 6 5 Ordering details 48 INDEX 49 ...

Page 6: ......

Page 7: ...al is intended for qualified personnel working in electrical engineering and electronics This signal word indicates that there is a high risk of danger that will result in electrocution or serious injury if not avoided This signal word indicates a medium risk of danger that can lead to death or serious injury if not avoided This signal word indicates a low level risk that can result in minor or mo...

Page 8: ...ing Troubleshooting Telephone Fax In Germany only E mail 49 6401 807 760 49 6401 807 259 0700BenderHelp Tel and Fax support bender service de 1 2 2 Repair service Repair calibration update and replacement service for Bender products Repairing calibrating testing and analysing Bender products Hardware and software update for Bender devices Delivery of replacement devices in the event of faulty or i...

Page 9: ...roubleshooting of Bender products Analysis of the electrical installation in the building power quality test EMC test thermography Training courses for customers Telephone Fax E mail Internet 49 6401 807 752 762 technical issues 49 6401 807 753 sales 49 6401 807 759 fieldservice bender service de www bender de com Available from 7 00 a m to 8 00 p m 365 days a year CET UTC 1 Mo Thu 7 00 a m 8 00 p...

Page 10: ...of stand ard software as part of deliveries modifications and changes to general delivery conditions for products and services in the electrical industry set out by the ZVEI Zentralverband Elektrotechnik und Elektronikindustrie e V German Electrical and Electronic Manufacturer s Association also applies Sale and delivery conditions can be obtained from Bender in printed or elec tronic format 1 5 I...

Page 11: ...sioning operation and maintenance of the device Unauthorised changes to the device made by parties other than the manufacturer Non observance of technical data Repairs carried out incorrectly and the use of replacement parts or accessories not approved by the manufacturer Catastrophes caused by external influences and force majeure Mounting and installation with device combinations not recom mende...

Page 12: ... Commu nity In Germany these policies are implemented through the Electrical and Electronic Equipment Act ElektroG According to this the following applies Electrical and electronic equipment are not part of household waste Batteries and accumulators are not part of household waste and must be disposed of in accordance with the regulations Old electrical and electronic equipment from users other th...

Page 13: ...and regulations must be complied with The European stand ard EN 50110 can be used as a guide Only qualified personnel are permitted to carry out the work necessary to install commission and run a device or system Risk of electrocution due to electric shock Touching live parts of the system carries the risk of An electric shock Damage to the electrical installation Destruction of the device Before ...

Page 14: ...ring diagram The transformati on ratio n x 1A resp n x 5A can be set in the range from 1 2000 In order to meet the requirements of the applicable standards customised pa rameter settings must be made on the equipment in order to adapt it to local equipment and operating conditions Please heed the limits of the range of application indicated in the technical data Any use other than that described i...

Page 15: ...sponse value r m s value measurement AC History memory for the operating value Cyclical self test Internal test and reset button Password protection to prevent unauthorised changes being made to device settings Sealable transparent cover Available with screw type or push wire terminals 3 2 Description of function Once the supply voltage is applied the start up delay begins Measured cur rent values...

Page 16: ...1 and AL2 3 2 2 Automatic self test The device automatically carries out a self test after connecting to the system to be monitored and later every 24 hours During the self test internal functio nal faults will be detected and appear in form of an error code on the display 3 2 3 Manual self test After pressing the test button for 1 5 s the device carries out a self test Du ring this test internal ...

Page 17: ...delay t After connection to the supply voltage the LED alarm indication is delayed by the preset time t 0 300 s The analogue output value will be outputted wi thout a delay 3 2 8 Analogue voltage or current output option M The device provides an analogue interface with galvanic isolation but does not provide an alarm relay One of three output signals can be selected from the out menu A certain out...

Page 18: ...0 1 1 A x n L3 I 0 30 A Current L3 adjustable from 0 1 1 A x n L1L2L3 I2 AL maximum current from L1 L2 or L3 Response value I2 L1 I2 AL Current L1 Response value I2 L2 I2 AL Current L2 Response value I2 L3 I2 AL Current L3 Response value I2 CMD421 DM L1L2L3 I 1 50 A highest current from L1 L2 or L3 adjustable from 0 5 5 A x n L1L2L3 I 1 50 A lowest current from L1 L2 or L3 adjustable from 0 5 5 A ...

Page 19: ...n settings can only be made sub ject to the correct password being entered 0 999 3 2 11 Factory setting FAC After activating the factory setting allpreviously changed settings are reset to delivery status 3 2 12 Transformation ratio of the current transformers The transformation ratio for the current transformers has to be set as factor n in the menu Set CMD420 DM requires current transformers wit...

Page 20: ...in a value of more than three digits the first three digits indicated are not rounded The resolution of the adjustable response range is calculated as follows Resolution of setting thresholds factor n 100 Factor n Response value range CMD420 DM min max 1 9 0 10 1 00 A 0 90 9 00 A 10 99 1 0 10 0 A 9 90 99 0 A 100 990 10 100 A 99 0 990 A 1 00 2 00 k 0 10 1 00 kA 0 20 2 00 kA Factor n Response value ...

Page 21: ...commission and run a device or system Risk of electrocution due to electric shock Touching live parts of the system carries the risk of An electric shock Damage to the electrical installation Destruction of the device Before installing and connecting the device make sure that the installation has been de energised Observe the rules for working on electrical installations DANGER 100 mm 116 mm Zubeh...

Page 22: ...t fit is ensured Screw fixing Use the tool to move the rear mounting clips a second mounting clip is re quired see ordering information to a position that it projects beyond the en closure Then fix the device using two M4 screws 4 2 Connection of the device Connect the device according the wiring diagram Us A1 6A 6A IT System A2 k1 M µA V mA A2 A1 L1 N L2 L3 l3 k3 l1 k2 l2 k1 l1 k2 l2 k3 l3 ...

Page 23: ...ipment or property The maximum permissible measuring current and the overload capability of the measuring inputs k l have to be taken into consideration 1 2 3 Connect the conductor to the push wire ter minals according to the schematic diagram Terminal Connections A1 A2 Connection to supply voltage k1 l1 k2 l2 k3 l3 Connection to the conduc tors to be monitored using current transformers M common ...

Page 24: ...nically secure CMD420 DM Response value overcurrent I1 prewarning Response value overcurrent I2 alarm 100 value of the analogue output CMD421 DM Response value overcurrent I1 prewarning Response value overcurrent I2 alarm 100 value of the analogue output CMD420 DM CMD421 DM Hysteresis Fault memory M Analogue interface type Start up delay Monitoring function Transformation ratio n Password 0 15 A 5...

Page 25: ...lues of the measurement inputs k1 l1 k2 l2 k3 l3 n Transformation ratio factor for external current transformer I12 I12 Undercurrent I1 or I2 Overcurrent I1 or I2 t Start up delay t I Hys Hys Response value hysteresis in Hys in standard mode Measured value in the hysteresis range accor ding to alarm M Fault memory active Password protection enabled ...

Page 26: ... Transformation ratio n 1 I 1 6 A value across the measure ment input k1 l1 Fault memory active t Test button 1 5 s to indicate the display elements in use to start a self test Up button 1 5 s Menu items values R Reset button 1 5 s Deleting the fault memory Down button 1 5 s Menu items values MENU MENU button 1 5 s Starting the menu mode Enter button 1 5 s Confirm menu item submenu item and value ...

Page 27: ... of the analogue output are to be activated or deactivated Menu Sub Menu Menu item Activati on Adjustable parameter AL response values I2 HI Overcurrent alarm I1 HI Overcurrent prewarning I Hys Hysteresis I21 I21 out output con trol M ON Fault memory I U Select current or voltage output AnA Analogue outp 100 reference I I Lx ON 100 reference related to the user defined current value phase dependen...

Page 28: ...t In window function Lo undercurrent n 1 Transformation ratio factor external current transfor mer off Set parameters via pass word FAC Factory setting visual inspection SYS Function locked InF Display software version HiS Clr History memory for the first alarm value erasable Menu Sub Menu Menu item Activati on Adjustable parameter ...

Page 29: ...ied con secutively Current of measuring channel L2 Current of measuring channel L3 Response value I1 prewarning Response value I2 alarm Pressing the Up button shows the corresponding values in the reverse order You can also press the Enter button to return from the response value display to the measured value display In the standard mode the currently set measured values and response values can be...

Page 30: ...ory and the alarm relays Activate deactivate the fault memory or select con mode Select output signal I U Select 100 reference related to the output signal AnA t Start up delay t Set Set parameters for device control Select the appropriate parameter for response values overcurrent HI undercurrent Lo or window function In Set the transformation ratio n for the current transfor mer Activate or deact...

Page 31: ...Operation and configuration 31 CMD420_421 DM_D00224_01_M_XXEN 08 2016 Menu structure t 1 5 s t 1 5 s t 1 5 s t 1 5 s t 1 5 s AL out t SEt InF HiS ESC ESC ...

Page 32: ...ears 4 Confirm with Enter The current value for prewarning appears on the flashing display 5 Use the Up or Down button to set the appropriate prewarning value Confirm with Enter I1 flashes 6 You can exit the menu by pressing the Enter button for more than 1 5 seconds to reach the next higher level or selecting the menu item ESC and confirming with Enter to reach the next higher level 5 5 2 Changeo...

Page 33: ...or overcurrent Response value I2 overcurrent Response value I1 overcurrent Hysteresis Hys of the response values I1 I2 Increasing the response value I2 Example overcurrent Increasing the response value I1 prewarning overcurrent Setting the hysteresis of the response value I 2 A I 2 A I 2 A 1x I 2 A 2x ...

Page 34: ...on 34 CMD420_421 DM_D00224_01_M_XXEN 08 2016 5 5 4 Setting the fault memory to con mode 5 5 5 Selecting the type of analogue interface Select analogue interface I 4 20 mA Select analogue interface U 0 10 V 2x 1 5 s 1x 2x 1 5 s ...

Page 35: ...ith 0 30 A CMD420 DM resp 1 5 A CMD421 DM The freely configurable values for CMD420 DM are between 0 1 and 1 A for CMD421 DM between 0 5 and 5 A The following example shows how the 100 reference value is changed from the freely configurable highest current value predefined for L1 L2 or L3 to response value AL By activating on the menu item L1L2L3 I2 AL the previously activated menu item L1L2L3 I 0...

Page 36: ...ou can set a start up delay t 0 300 s for device start 5 5 8 Changing from overcurrent operation to window operation Use this menu item to set whether the response values of the device apply to overcurrent HI or undercurrent operation Lo In addition window operati on In can be selected 2x 1 5 s 2x 2x 1 5 s ...

Page 37: ...Operation and configuration 37 CMD420_421 DM_D00224_01_M_XXEN 08 2016 5 5 9 Setting the transformation ratio for external current transformer 2x 1 5 s 1x ...

Page 38: ...ng and password protection This menu can be used to activate password protection to modify the pass word or to deactivate password protection It is also where the device can be reset to the factory settings a Activating the password protection b Changing the password 2x 1 5 s 2x 2x 1 5 s 2x ...

Page 39: ...Operation and configuration 39 CMD420_421 DM_D00224_01_M_XXEN 08 2016 c Deactivating the password protection 5 5 11 Restoring factory settings 2x 1 5 s 2x 3x ...

Page 40: ...activating this function data will be displayed as a scrolling text Once one pass is completed you can select individual data sections using the Up Down buttons 5 5 13 History memory query Select the history memory via the HiS menu HiS Use the Up and Down keys to view the next display If Clr is flashing the history memory can be cleared by pressing the Enter button ...

Page 41: ...50 V Rated impulse voltage pollution degree 4 kV III Basic insulation between k1 l1 k2 l2 k3 l3 A1 A2 M μA mA V Voltage test acc to IEC 61010 1 2 21 kV Supply voltage CMD420 DM D 1 CMD421 DM D 1 Supply voltage Us AC 16 72 V DC 9 6 94 V Frequency range Us 15 460 Hz CMD420 DM D 2 CMD421 DM D 2 Supply voltage Us AC DC 70 300 V Frequency range Us 15 460 Hz Power consumption 4 VA Measuring circuit CMD4...

Page 42: ...Measuring circuit CMD421 DM Nominal measuring range r m s value AC 0 5 A Overload capability continuous 7 5 A Overload capability 5 s forscrew typeterminalconnection20A for push wire terminal connection 12 A Load per measuring input 3 mΩ Rated frequency fn 42 460 Hz Response values CMD421 DM Undercurrent Lo I Alarm 2 n 1 AC0 5 5 A 1 5 A Undercurrent Lo I Alarm 1 n 1 100 200 150 Take a maximum nomi...

Page 43: ...inated Display range measured value r m s value x transformation ratio n CMD420 AC 0 1 A x n CMD421 DM AC 0 5 A x n Operating uncertainty in the range 42 460 Hz 5 2 digits Measured value memory HiS for the first alarm value data record measured values Password on off 0 999 OFF Fault memory M alarm LEDs on off con on Outputs analogue Voltage output Open circuit voltage terminals open DC 20 V Voltag...

Page 44: ...Connection type screw type terminals Connection properties rigid flexible 0 2 4 0 2 2 5 mm2 AWG 24 12 Multi conductor connection 2 conductors with the same cross section rigid flexible 0 2 1 5 0 2 1 5 mm2 AWG 24 16 Stripping length 8 9 mm Tightening torque 0 5 0 6 Nm Connection type push wire terminals Connection properties rigid 0 2 2 5 mm2 AWG 24 14 Flexible without ferrules 0 75 2 5 mm2 AWG 19 ...

Page 45: ... CMD420_421 DM_D00224_01_M_XXEN 08 2016 DIN rail mounting acc to IEC 60715 Screw fixing 2 x M4 with mounting clip Software version CMD420 DM D287 V1 1x Software version CMD421 DM D294 V1 1x Weight 150 g factory setting ...

Page 46: ...Technical data 46 CMD420_421 DM_D00224_01_M_XXEN 08 2016 6 2 Current and voltage curves of the analogue interface Current output 0 4 20 mA Current output 0 400 μA Voltage output 0 10 V ...

Page 47: ...ta 47 CMD420_421 DM_D00224_01_M_XXEN 08 2016 6 3 Standards approvals and certifications 6 4 Label for modified versions There will only be a label in this field if the device is different from the standard version ...

Page 48: ...C DC 70 300 V DC 15 460 Hz 0 1 1 A x n B73060011 CMD420 DM 2 AC DC 70 300 V DC 15 460 Hz 0 1 1 A x n B93060011 CMD421 DM 1 push wire terminals AC 16 72 V DC 9 6 V 94 V DC 15 460 Hz 0 5 5 A x n B73060012 CMD421 DM 1 AC 16 72 DC 9 6 V 94 V DC 15 460 Hz 0 5 5 A x n B93060012 CMD421 DM 2 push wire terminals AC DC 70 300 V DC 15 460 Hz 0 5 5 A x n B73060013 CMD421 DM 2 AC DC 70 300 V DC 15 460 Hz 0 5 5...

Page 49: ... Installation and connection 21 Intended use 14 L LED Alarm 1 lights 26 LED Alarm 2 lights 26 M Malfunction 17 Manual self test 16 Menu AL response values 27 HiS history memory for the first alarm value 28 InF hard and software version 28 out output control 27 Set device control 28 t timing check 27 Menu structure overview 27 Mounting clip for screw mounting 48 O Operation and configuration 25 Ord...

Page 50: ...tion 19 R Reset button 26 Response value setting Hysteresis 33 Overcurrent I 33 S Select analogue interface 34 Service 8 Set the analogue interface 35 Starting the menu mode 26 Start up delay t 17 Support 8 T Technical data 41 Test button 26 Training courses 10 W Window discriminator function 16 Wiring diagram 22 Workactivitiesonelectricalinstallations 13 workshops 10 ...

Page 51: ......

Page 52: ...er GmbH Co KG P O Box 1161 35301 Gruenberg Germany Londorfer Strasse 65 35305 Gruenberg Germany Tel 49 6401 807 0 Fax 49 6401 807 259 E Mail info bender de www bender de Photos Bender archives BENDER Group ...

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