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Summary of Contents for Bender AF460
- Page 1 MF loop monitor System for monitoring the trailing cable protective earth conductor by a measurement frequency loop. Suitable for mobile electrical equipment in non-gassy underground and opencast mines 1 kHz TGH1402en/11.2020 Manual EN...
- Page 2 Service and support for Bender products First-level support Technical support Carl-Benz-Strasse 8 • 35305 Grünberg • Germany Telephone: +49 6401 807-760 0700BenderHelp * Fax: +49 6401 807-629 E-mail: support@bender-service.de Available on 365 days from 7.00 a.m. to 8.00 p.m. (MEZ/UTC +1) * Landline German Telekom: Mon-Fri from 9.00 a.m.
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Page 3: Table Of Contents
How to use this manual ....................5 Indication of important instructions and information ........5 Training courses and seminars.................5 Delivery conditions .......................5 Warranty and liability....................6 Disposal of Bender devices ..................6 Safety ..........................6 MF loop for monitoring the PE conductor ........7 Intended use ........................7 Function ..........................7 Installation and connection ............ - Page 4 TGH1402en/11.2020...
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Page 5: General Instructions
Training courses and seminars www.bender.de > Know-how-> Seminars. Delivery conditions The conditions of sale and delivery set out by Bender apply. These can be obtained from Bender in printed or electronic format. The following applies to software products: “Software clause in respect of the licensing of standard software as part of de-... -
Page 6: Warranty And Liability
• Non-observance of technical data. • Repairs carried out incorrectly. • Use of accessories and spare parts not recommended by Bender. • Catastrophes caused by external influences and force majeure. • Mounting and installation with device combinations not recommended by the manufac- turer. -
Page 7: Mf Loop For Monitoring The Pe Conductor
(BS) shuts down. 2.2.2 Components of the MF loop monitor Signal generator AF460 The equipment has two equivalent signal outputs to supply two MF loops. The generator supplies a sinwave output current I of 80 mA maximum at a frequency of 1kHz at both outputs. - Page 8 MF loop for monitoring the PE conductor Frequency selective current monitor SRCM420 The device monitors the generator current circuit for undercurrent. The measuring current trans- former W20 or W35 supplies the required measuring current I for SRCM420. Its input filter, which is set to 1 kHz, registers the transformer signal with a signal-to-noise ratio of approx.
- Page 9 The following principle circuit diagram gives an overview of how the MF loop monitor operates. MF loop for monitoring the PE conductor, principle circuit diagram Un, 3 AC IT system Trailing cable AC 230 V F 6A 1 kHz AG410 BG12-1 SRCM420 AF460 AG410 W20, W35 TGH1402en/11.2020...
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Page 10: Installation And Connection
16 onwards. 3.2.1 Installing a stationary switch cabinet 1. AF460 and SRCM420 must be snapped into position on DIN rails inside the switch cabi- net. 2. The measuring current transformer must be installed near the earthing point of the PE conductor. - Page 11 MF loop monitor The MF loop monitor is run on 3-phase AC IT systems with a maximum nominal voltage U 1000 V. Connect the components according to the connection diagram. TGH1402en/11.2020...
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Page 12: Operating The Mf Loop Monitor
MENU key: for menu functions, see page 19 Enter key: for menu functions, see page 19 A complete description of the SRCM420 can be found on page 19 onwards. AF460 The ON LED of the measuring current generator is used as the operating indicator. BG12-1 ON and OFF button of the operator unit for switching the contactor (BS) on and off. -
Page 13: Technical Data
.............................. AC 0…1000 V Frequency of nominal voltage f ............................ 50/60 Hz Weight ................................... ≤ 1.6 kg 5.1.4 Signal generator AF460 The data labelled with an * are absolute values Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Rated voltage ..................................250 V Rated impulse voltage/degree of pollution ........................ - Page 14 Technical data Connection Connection type ..............................screw terminals Rigid/flexible/conductor sizes ..................0.2…4/0.2…2.5 mm /AWG 24…12 Multi-conductor connection (2 conductors with the same cross section) rigid/flexible ............................0.2…1,5/0.2…1.5 mm Stripped length ................................8…9 mm Tightening torque ..............................0.5…0.6 Nm Other Operating mode ..............................continuous duty Position of normal use ................................
- Page 15 MF loop monitor Time behaviour Start-up delay t ..............................1…10 s (1 s)* Response delay t (Alarm) ..........................0.1…1 s (0,2 s)* Response delay t (pre-warning) ........................0.1…1 s (0,2 s)* Delay on release t ............................... 1…10 s (1 s)* Operating time t ................................
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Page 16: Dimension Diagrams
DIN rail mounting acc. to .............................. IEC 60715 Screw fixing ............................2 x M4 with mounting clip Weight .................................... ≤ 160 g Dimension diagrams 5.2.1 AF460 and SRCM420 36 mm Fig 5–1 Enclosure dimensions X460 and X420 5.2.2 Operator unit BG12-1... - Page 17 MF loop monitor 5.2.3 Coupling device AG410 Fig 5–1 Views: Side, Front 5.2.4 Measuring current transformers W20 and W35 Transformer type (mm) (mm) (mm) 21.4 (mounting with 2 angles diagonal) 49.8 (mounting with 2 angles diagonal) TGH1402en/11.2020...
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Page 18: Ordering Data
Supply Nominal Response Device Measuring voltage voltage range Item No. type frequency DC, AC 42…460 Hz AF460 1 kHz B97022021 70…276 V ≤ 80 mA/5 V 3-phase AC 50/60 Hz AG410 B97022022 0…1000 V BG12-1 DC 19.2…26.4 V B97022023 DC, AC 42…460 Hz SRCM420-D-2 30…100 mA... -
Page 19: Appendix
MF loop monitor Appendix Frequency selective current monitor SRCM420 6.1.1 Description of function Once the supply voltage U has been applied, the start-up delay “t” starts. During this time, if the values drop below the response values, this has no influence on the switch state of the alarm re- lays. - Page 20 Appendix Delays t, t and t The times t, t und t described in the following delay the output of alarms via the LEDs and re- lays.. Start-up delay t Once the supply voltage U has been switched on, the contactor (BS) cannot be switched on du- ring the pre-selected delay (1…10 s).
- Page 21 MF loop monitor 6.1.2 Terminal diagram The front plate cover must be opened up on the underside marked with an arrow. 2 (S1) 3 (S2) Terminal Connection A1, A2 Connection to the voltage supply U k, l Connection for measuring current transformer Connection for external test button 11, 12, 14 Alarm relay K1...
- Page 22 Appendix 6.1.3 Display and controls Display elements Element Function Response value I in mA (Alarm 1, pre-warning) Response value I in mA (Alarm 2, main alarm) Hys % Response value hysteresis in % ton1, Response delay t (K1), ton2, Response delay t (K2) Start-up delay t, toff...
- Page 23 MF loop monitor 6.1.4 Menu structure All the parameters which can be changed are found in the „Menu option“ and „Adjustable para- meter“ column. A display-like diagram is used in the “Menu option” column. Menu Menu Activation Adjustable parameter option (Alarm 2) (Alarm 1) (Response values)
- Page 24 Appendix 6.1.6 Display in Menu mode Setting parameters: overview Menu option Adjustable parameter Menu structure Interrogate and adjust response values: t >1,5 s Current I (AL2) Current I (AL1) Hysteresis of the response values: Hys t > 1,5 s Adjust delays: Response delay t Start-up delay t Delay on release t...
- Page 25 MF loop monitor Adjusting response values for undercurrent (I – Undercurrent I in mA, Alarm 2) – Undercurrent I in mA, Alarm 1) – Hysteresis (Hys) of the response values I and I To increase response value I >1,5 s To increase response value I >1,5 s To reduce hysteresis response value...
- Page 26 Appendix Factory settings and password protection This menu can by used to switch on the password protection, change the password or switch off the password protection. You can also reset the device to the factory settings. a) To activate password protection b) To change the password c) To deactivate password protection To restore factory settings...
- Page 27 MF loop monitor 6.1.7 Factory setting Response value I 35 mA Response value I 36 mA Hysteresis: 15 % Mode of operation K1: N/C operation (n.c.), Mode of operation K2: N/C operation (n.c.) Response delay K1: = 0.2 s Response delay K2: = 0.2 s Start-up delay: t = 1.0 s...
- Page 28 Nachdruck und Vervielfältigung Reprinting and duplicating nur mit Genehmigung des Herausgebers. only with permission of the publisher. Bender GmbH & Co. KG Bender GmbH & Co. KG Postfach 1161 • 35301 Grünberg • Deutschland PO Box 1161 • 35301 Grünberg • Germany Londorfer Str.
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