DC Link Voltage Monitor for Power Electronics DLM4000 User Manual type: version: document: date: . DLM4000 1.20 1.2_eng 29.04.2013 Ing. Büro M.Billmann 06/2009 Lerchensteige 10 •D- 91448 Emskirchen Telefon +49-(0)9104-8235-88 • Fax +49-(0)9104-8235-89 email: info@ib-billmann.de DLM4000_Bed_Anleitung_v1.2_oce_eng.doc; 16.06.2009; M.
ING. BÜRO M.BILLMANN DLM4000 – DC Link Voltage Monitor for Power Electronics 2 5 1 3 4 6 Fig 1: DLM4000 elements DLM4000_Bed_Anleitung_v1.2_oce_eng.doc; 16.06.2009; M.
Description of elements Front side elements and interfaces 1. 2. 3. 4. 5. 6. Analog voltage indicator [ tolerant up to 3,5/4kVDC, not calibrated ] Groups of flashing red LEDs [ when DC link voltage is high ] Group of green LEDs [ illuminating when DC link voltage < 35V ] Safety instructions [ follow and read carefully ] DC link connection cable [ firmly attach to DC link voltage ] Applicable nominal and max level of DC link voltage DLM4000_Bed_Anleitung_v1.2_oce_eng.doc; 16.06.2009; M.
1 Contens Seite 2 About this document 2.1 How to use this document 2.2 Used symbols and abbreviations 5 5 5 3 Description 3.1 Intended usage 3.2 Safety 3.3 Warning hints, legal stuff 5 6 6 7 4 7 Functional description 5 Start – up and operation 5.1 Check functionality of DLM4000 5.2 Prepare DLM4000 for operation 5.3 Technical data 8 8 8 8 6 9 Failure 7 Maintenance, Service, Accessories 7.1 Maintenance 7.2 Service 7.3 Accessories 8 Annex 8.1 Declaration of Conformity 8.2 Schematic 8.
2 About this document This document describes how to - operate - setup and check function of - troubleshoot the DC link Monitor for Power Electronics DLM4000 2.1 How to use this document Please read this manual carefully, to operate the DLM4000 correctly. On page 2 and 3 you will find the control elements and interfaces listed in graphical illustration to get an easy link to the description in this manual.
3 Description The DLM4000 is a DC link monitoring unit with two independent indicators, red flashing LEDs and analog display to confirm if high DC voltage is present. Both indicators share one box and a pair of high voltage cables that must be attached to the DC link before energy is present. The unit needs no additional power supply, it is operated and supplied from the DC link voltage from 16VDC to 3,500VDC (permanent, 4kV for < 20msec) 3.
3.3 Warning hint, exclusion of liability This unit monitors dangerous voltages and indicates them visually to laboratory staff. Warning The DLM4000 may show low or no DC link voltage if - the box is damaged; - cables are damaged, or not proper connected to the DC link. Always use redundant elements to double check DC link voltage. Always provide sufficient cooling for unit. Never thermally isolate the back side of the box.
5 Start up and operating the unit 5.1 Check functionality of DLM4000 Always make sure that the unit is functional before attaching to DC link. Check for - damage of cables - damage of box (cracks, loose bushings) - internal appearance (smoke, burned components, PCBs) Then - Apply 50VDC from a laboratory power supply and check for flashing red LEDs plus analog voltmeter display. - Reduce power supply voltage to 20V and check for green LEDs to illuminate while the red LEDs stop flashing.
6 Failure In case of failure immediately power down the attached DC link and disconnect the DLM4000 after safe discharge. In case of damages please consult us directly. 7 Maintenance, Service, Accessories 7.1 Maintenance This unit does not need maintenance. It may only be operated in dry, clean areas. Take care that the unit is kept in a non dusty condition. Dust may cause dysfunction or reduced performance. Abandonment 1. Discharge the connected DC link 2.
7.3 Accessories The DLM4000 was developed considering a long year experience in power electronics. The goal to create”useful things to make power electronics design and application engineer’s life easier“is main issue. In correlation to achieve this goal there is available a variety of - fast DC link dischargers and crowbars - pulse generators for IGBT characterization - fiber optical transmitters - fiber optical receivers (error input, scope trigger, ...
Dipl. Ing. Markus Billmann Lerchensteige 10 91448 Emskirchen Dipl. Ing. M. Billmann · Lerchensteige 10 · 91448 Emskirchen Declaration of Conformity Manufacturers name and address Ing.-Büro Markus Billmann Lerchensteige 10 91448 Emskirchen The Ing. Büro M.
8.2 Schematic of DLM 4000 DLM4000_Bed_Anleitung_v1.2_oce_eng.doc; 29.04.2013; M.
8.3 Part location on main PCB DLM4000_Bed_Anleitung_v1.2_oce_eng.doc; 29.04.2013; M.
