MITSUBISHI ELECTRIC FR-S520 - Manual (Page 74)

65
2
Parameter Name
Factory
Setting
Setting
Range
Remarks
10
DC injection brake
operation frequency
3Hz 0 to 120Hz
11
DC injection brake
operation time
0.5s 0 to 10s
12 DC injection brake voltage 6% 0 to 15%
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.)
<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%.
CAUTION
Install a mechanical brake. No holding torque is provided.
2
.3.8 Starting frequency
The starting frequency at which
the start signal is turned on can
be set in the range 0 to 60Hz. Output frequency
(Hz)
60
Pr.13
Frequency setting signal (V)
S
e
tt
in
g
r
ange
Foward rotation ON
0 Time
Parameter Name
Factory
Setting
Setting
Range
Remarks
13 Starting frequency 0.5Hz 0 to 60Hz Setting is enabled when Pr. 30 = "1".
CAUTION
The inverter will not start if the frequency setting signal is less than the value set in
Pr. 13 "starting frequency".
For example, when 5Hz is set in Pr. 13, the motor will not start running until the
frequency setting signal reaches 5Hz.
CAUTION
Note that when Pr. 13 is set to any value lower than Pr. 2 "minimum frequency",
simply turning on the start signal will run the motor at the preset frequency if the
command frequency is not input.
♦ ♦ ♦ ♦
Related parameters
♦ ♦ ♦ ♦
Minimum frequency setting
⇒
Pr. 2 "minimum frequency" (refer to page 59)