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HITACHI DYNAMIC BRAKING UNIT (BRD SERIES)
200V Class (BRD-E2-30K/55K)
400V Class (BRD-EZ2-30K/55K/110K)
OPERATION MANUAL
NB4882CX
CONTENTS
1. UNPACKING INSPECTION.....................................................................
1
2. IMPORTANT NOTICES...........................................................................
1
3. INSTALLATION.......................................................................................
2
4. WIRING AND FUNCTION SETTING......................................................
3
4.1
Wiring Notices.........................................................................................................
3
4.2
Functional Setting ....................................................................................................
5
4.3
Example of External Connection ..............................................................................
6
4.4
Example of External Connection
(Parallel Connection Operation) ...............................................................................
7
5. TROUBLESHOOTING .............................................................................
9
5.1
Alarm contact is activated and the inverter stops ......................................................
9
5.2
When the inverter trips the 0V during inverter deceleration......................................
10
6. PRE-START CHECKS..............................................................................
11
7. SPECIFICATIONS....................................................................................
12
7.1
Standard Specifications ............................................................................................
12
8. INTERNAL CIRCUITS.............................................................................
16
9. SELECTION OF DYNAMIC BRAKING UNITS AND
DISCHARGING RESISTORS...................................................................
20
9.1
Braking Energy without a Dynamic Braking Unit .....................................................
21
9.2
Using the Dynamic Braking Unit..............................................................................
21
9.3
General Formulas Use for Estimation .......................................................................
23
10.MAINTENANCE AND CHECKS .............................................................
24
10.1 Notices on Maintenance and Checks.........................................................................
24
10.2 Check Items .............................................................................................................
24
11.PARTS ORDERING AND INQUIRY .......................................................
26
APPENDIX ....................................................................................................
27