BENSHAW RSi GM2 Series - Brake Control

Learning Advanced Features
140
890054-00-00
GM2 Series VFD
Brake Control
This feature controls the On/Off operation of the load’s electro-mechanical braking system.
Group
Code
Name
Setting
Setting
Range
Unit
dr
09
Control mode
0
V/F
-
-
Ad
41
Brake release current
50.0
0.0–180%
%
42
Brake release delay time
1.00
0.0–10.0
sec
44
Brake release Forward
frequency
1.00
0–Max
Frequency
Hz
45
Brake release Reverse
frequency
1.00
0–Max
Frequency
Hz
46
Brake engage delay time
1.00
0.00–10.00
sec
47
Brake engage frequency
2.00
0–Max
Frequency
Hz
OU
31
Multi-function (digital)
relay1 item
35
BR
Control:
-
-
33
Multi-function (digital)
relay2 item
When brake control is activated, DC braking (Ad.12) at inverter start and dwell operation
(Ad.20~23) do not operate.
• Brake release sequence: When a run command is applied, the inverter accelerates up
to brake release frequency (Ad.44 Forward or Ad.45 Reverse). After reaching the brake
release frequency, when the motor current reaches brake release current (Ad.41 BR Rls
Curr), the output relay (OU.31 or OU.33) set to 35 (BR Cotrol) sends a release signal.
Once the signal has been sent, acceleration will begin after maintaining frequency for
brake release delay time (Ad.42 BR Rls Dly).
• Brake engage sequence: When a stop command is applied, the motor decelerates.
When the output frequency reaches brake engage frequency (Ad.47 BR Eng Fr), the
motor stops deceleration and the output relay (OU.31 or OU.33) set to 35 (BR Cotrol)
sends a brake engage signal. Frequency is maintained for the brake engage delay time
(Ad.46 BR Eng Dly) and will become 0 afterwards. If Stop Mode (Ad.08) is set to 1 (DC
brake), inverter output is blocked after DC braking.
Relay1 or Relay2