Firmware Manual

9000X AF Drives
A-2 For more information visit: www.eaton.com
MN04004001E
August 2010
Appendix A
Brake-on: Stop command activates the brake delay count and the brake is closed when the
output frequency falls below the set limit (ID315 or ID346). As a precaution, the brake closes
when the brake-on delay expires, at the latest.
Note: A fault or Stop state will close the brake immediately without a delay.
See Figure A-2.
Note: It is strongly advisable that the brake-on delay be set longer than the ramp time in
order to avoid damaging of the brake.
Figure A-2: Brake Control Logic
No brake-off control
ID346
Brake-off ctrl, 2 limits
Brake-on/off ctrl, 1 limit
TRUE
Output Frequency ≥ ID347
Output
Frequency
0-2
0-2
3-4
3
4
Brake Off
Brake On
Brake-Off
Control
Brake-On
Control
No brake-off control
ID348
Brake-off control,
torque limit
TRUE
Motor Torque ≥ ID349
0-2
0-2
3-4
3
Or
No brake-on control
ID315
Brake-on ctrl, 2 limits
0-2
No brake-on control
ID346
Brake-on/off ctrl, 1 limit
ID316
ID347
0-3
0-3
4
4
3
4
And
Not
And
Or
Or
≤
Off-
Delay
Count
On-
Delay
Count
Run State
No Run Request
Reversing
No Run Request
Fault
3