Setting The Braking Unit Parameters/Diagnostics - Schneider Altivar 61/71 Guía De Explotación

Setting the braking unit parameters/Diagnostics

Braking parameters to be set on the drive
Please refer to the Programming Manual on the CD-ROM supplied with the drive.
• In the [1.7 APPLICATION FUNCT.]
• Protecting the braking resistor via the drive: In the
[DB RES. PROTECTION] (brP-)
• The braking unit engage threshold is factory set and is suitable for all types of line supply. However, expert users can modify this setting
to meet the requirements of certain specific applications.
In the [1.4 MOTOR CONTROL]
For ATV71H C20N4 to C50N4 and ATV61H C25N4 to C63N4 :
- The threshold for a 400 V three-phase line supply is between 660 V DC and 820 V DC
- The threshold for a 440 V three-phase line supply is between 720 V DC and 820 V DC
- The threshold for a 460 V three-phase line supply is between 750 V DC and 820 V DC
- The threshold for a 480 V three-phase line supply is between 770 V DC and 820 V DC
Recommended value: 785 V DC (factory setting)
For ATV71H C20Y to C63Y and ATV61H C25Y to C80Y :
- The threshold for a 500 V three-phase line supply is between 817 V DC and 1080 V DC
- The threshold for a 600 V three-phase line supply is between 980 V DC and 1080 V DC
- The threshold for a 690 V three-phase line supply is 1080 V DC
Recommended value: 1080 V DC (factory setting)
• If several drives, each with a braking unit, are connected to the same DC bus, the engage thresholds can be adjusted automatically: in
the [1.4 MOTOR CONTROL]
Diagnostics
The braking unit and the associated braking resistor are monitored by the drive.
Monitoring applies in particular to:
- Resistor overload
- Resistor short-circuit
Please refer to the Programming Manual on the CD-ROM supplied with the drive if a fault is displayed.
38
(FUn-) [RAMP] (rPt-)
menu,
[1.8 FAULT MANAGEMENT]
submenu.
(drC-) set the [Braking level]
menu,
(drC-) set the [Braking balance]
menu,
submenu, set parameter [Dec ramp adapt.]
(FLt-) adjust the parameters in the
menu,
(Ubr)
parameter.
(bbA) [Yes] (YES)
parameter to
(brA) to position [No]
.
1757084 11/2009
(nO)
.