Mitsubishi Electric FR-S500 Series, Instruction Manual

Page: 90 / 222

80
Explanation of functions (parameters)
2.3.7 DC injection brake (Pr. 10 , Pr. 11 , Pr. 12 )
<Setting>
•
Use Pr. 10 to set the frequency at which the DC injection brake operation is started.
•
Use Pr. 11 to set the period during when the brake is operated.
•
Use Pr. 12 to set the percentage of the power supply voltage.
•
Change the Pr. 12 setting to 4% when using the inverter-dedicated (constant-torque
motor).
(If the Pr. 12 value remains unchanged from the factory setting and Pr. 71 is changed
to the setting for use of the constant-torque motor, the Pr. 12 setting is automatically
changed to 4%.)
.
By setting the DC injection brake
voltage (torque) at a stop,
operation time, and operation
starting frequency, the timing of
applying the DC injection brake
to stop the braking torque the
motor is adjusted.
Parameter Name
Factory
Setting
Setting
Range
Remarks
10
DC injection brake
operation frequency
3Hz 0 to 120Hz Setting is enabled when
Pr. 30 = "1".
(When Pr. 11 is set to "0s" or
Pr. 12 is set to "0%", DC
injection brake is not
operated.)
11
DC injection brake
operation time
0.5s 0 to 10s
12 DC injection brake voltage 6% 0 to 15%
CAUTION
•
A too large setting of Pr. 12 "DC injection brake voltage" activates protection
function of electronic thermal relay function and can cause the inverter life to
be shorter.
CAUTION
Install a mechanical brake. No holding torque is provided.
♦
Related parameters
♦
•
Pr. 71 "applied motor"
⇒
refer to page 78
Output frequency
(Hz)
Time
Time
DC injection
brake voltage
"Operation
frequency"
Pr.10
Pr.12
"Operation
voltage"
Pr.11 " Operation time"