Mitsubishi Electric FR-V560 Instruction Manual page 129

Brake sequence (Pr. 60, Pr. 278 to Pr. 285)
(3) Parameter setting
1. Set speed control in Pr.800 "control system selection". (Refer to page 182.)
2. Set "7 or 8" (brake sequence mode) in Pr. 60.
To ensure more complete sequence control, it is recommended to set "7" (brake opening completion signal input)
in Pr. 60.
Pr. 60
Operation Mode
Setting
0 Normal operation mode
7
Brake sequence mode
8
REMARKS
Even if the intelligent operation function has been selected, inputting the jog or RT (second function selection) signal during an
inverter stop will switch to the normal operation and give priority to jog operation or second function selection.
After intelligent operation has been started, neither the jog signal nor the RT signal is accepted.
3. Refer to the following table and set the parameters.
Parameter Name
278 Brake opening speed
279 Brake opening current
Brake opening current
280
detection time
Brake operation time
281
at start
Brake operation
282
speed
Brake operation time
283
at stop
Deceleration
284 detection function
selection
Overspeed detection
285
speed*
This function is valid during vector control with encoder and vector control without encoder.
*
CAUTION
When using this function, set the acceleration/deceleration time to 1s or longer.
(4) Setting terminals
The terminals must be assigned using Pr. 180 to Pr. 183 and Pr. 187 and Pr. 190 to Pr. 192 and Pr. 195.
Signal
(with mechanical brake opening
BOF
BRI
CAUTION
1. The brake opening completion signal (BRI) is a parameter valid when Pr. 60 = 7.
2. Changing the terminal function using any of Pr. 180 to Pr. 183, Pr. 187, Pr. 190 to Pr. 192, and Pr. 195
may affect the other functions. Confirm the functions of the corresponding terminals before making
setting. (Refer to page 163.)
With mechanical brake opening
completion signal input
Without mechanical brake
opening completion signal input
Setting
Range
0 to 900r/min
0 to 200%
0 to 2s
0 to 5s
0 to 900r/min
0 to 5s
0
1
0 to 900r/min
9999
Brake Sequence Mode
Pr. 60 = 7
completion signal)
Brake opening request
Brake opening completion signal
Description
——
This function causes the inverter to output the
mechanical brake operation timing signal for
elevating application.
For the function details and setting method, refer to
Pr. 278 to Pr. 285 (brake sequence function).
Set the value higher than the Pr. 13 "starting speed".
Setting is enabled only when Pr. 278
Generally, set this parameter to about 50 to 90%. If the setting is too
low, the load is liable to drop with gravity at start.
Suppose that the rated inverter current is 100%.
Generally, set this parameter to about 0.1 to 0.3s.
Pr. 60 = 7: Set the mechanical delay time until the brake is loosened.
Pr. 60 = 8: Set the mechanical delay time until the brake is loosened +
about 0.1 to 0.2s.
Generally, set the Pr. 278 setting + 1 to 2r/min to this parameter.
Setting is enabled only when Pr. 282
Pr. 60 = 7: Set the mechanical delay time until the brake is closed +
0.1s.
Pr. 60 = 8: Set the mechanical delay time until the brake is closed +
about 0.2 to 0.3s.
Deceleration is not detected.
If deceleration is not normal during deceleration operation, the inverter
alarm (E.MB2) is provided to shut off the output and turn off the brake
opening request signal (BOF).
If (detected speed) - (output speed) > Pr. 285, the inverter alarm
(E.MB1) is provided to shut off the output and turn off the brake opening
request signal (BOF).
Overspeed is not detected.
Pr. 60 = 8
(without mechanical brake opening
completion signal)
Brake opening request
120
Description
≤
Pr. 282.
≥
Pr. 278.
——