Details Of Bfm; Bfm#1, #0 Maximum Speed; Bfm#2 Bias Speed; Bfm#4, #3 Jog Speed - Mitsubishi Electric FX2N-10PG User Manual

Model FX2N-10PG Pulse Output Block
7.2

Details of BFM

7.2.1

BFM#1, #0 Maximum speed

The upper limit of the speed in each operation mode.
Set the bias speed (BFM#2), jog speed (BFM#4, #3), zero return speed (high speed) (BFM#6,
#5), zero return speed (creep) (BFM#7), operation speed Ι (BFM#16, #15) and operation
speed ΙΙ (BFM#20, #19) to be less than the maximum speed.
The setting unit varies as "system unit" (BFM#36) is set.
Here, the inclination of ac-/deceleration is determined depending on the maximum speed, bias
speed (BFM#2), acceleration time (BFM#11) and deceleration time (BFM#12).
7.2.2

BFM#2 Bias speed

The start speed.
If it is used in combination with FX
resonant area and self-start frequency.
The inclination of the ac-/deceleration is determined depending on the settings of the
maximum speed, bias speed, acceleration time and deceleration time.
7.2.3

BFM#4, #3 Jog speed

The speed during manual forward/reverse (JOG+/JOG-) operation.
Set the jog speed in the range between the bias speed (BFM#2) and maximum speed
(BFM#1, #0).
(Maximum speed > Jog speed > Bias speed)
When the jog speed is set at the maximum speed or more, it is operated at the maximum
speed, and if the jog speed is at the bias speed or less, it is operated at the bias speed.
When operation speed change (BFM#26 b10) is allowed (OFF), the speed during jog
operation can be changed.
7.2.4

BFM#6, #5 Zero return speed (high speed)

The high return speed during machine zero return operation.
Set the zero return speed (high speed) in the range between the bias speed (BFM#2) and
maximum speed (BFM#1, #0).
When operation speed change (BFM#26 b10) is allowed (OFF), the speed during zero return
operation can be changed.
7.2.5

BFM#7 Zero return speed (creep)

The speed is set for slow-speed operation after input of the near-point signal (DOG) during
machine zero return operation.
To improve the precision of the zero position, set to be as slow as possible.
When operation speed change (BFM#26 b10) is allowed (OFF), the speed during zero return
operation can be changed.
7.2.6

BFM#8 Zero-point signal number

The number of zero-point signals from dog input ON or OFF (the count timing is set with
BFM#36) to the stop is set.
The zero-point signal is counted when the leading edge is detected.
When the setting value is "0", it is immediately stopped if the dog input is turned to ON or OFF.
At this time, it is immediately stopped from the zero return speed (BFM#6, #5).
If a machine may be broken due to immediate stop, the value can be set to stop the machine
after the safety speed is gained at the creep speed (BFM#7).
-10PG and stepping motor, set the speed, considering the
2N
Buffer memory (BFM) 7
7-5