Fuji Electric Faldic-a RYS-R Series, Руководство пользователя

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5-37
MHT260a (Engl.)
5.7.10 Brake timing
This signal is automatically turn on or off for the brake operation.
Brake timing (Control output signal)
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Function
This signal automatically excites or releases the motor brake, in accordance with the rotational command to the amplifier.
The control condition when the motor is stopped can be set by system para. 81.
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Parameter setting
To allocate the brake timing output to the control output terminal, set (14) to the system para.. If this signal is not allocated to the control
output terminal, this signal is deemed "always off".
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Related items
(1) Brake timing
The step to set the brake timing at the control output terminal is as follows:
1) Setting of control output terminal
Assign the value (14) corresponding to the brake timing to the system para. 31 and above. If value (14) is set at the system para. 31, OUT1
terminal is the output terminal of brake timing.
2) Setting at stoppage
Set “2” or “3” at the system para. 81 to select the status while motor is stopping. When “3” is set at para. 81, the motor comes to free-run
status when operating the brake and electromagnetic noise of motor is eliminated.
3) Brake operation time/release time
Assign the operating time and release time of external brake to system para. 82 and 83.
To each time period, add the scan time of PLC, the response time of external relay, magnetic contactor and the brake.
(2) Pulse train/manual feed (Forward command [FWD]/Reverse command [REV])
The brake timing output is held off, from when the power is turned on until rotational command is given.
When the following control input signals are given, the brake timing output is turned on.
1) [FWD], [REV]
2) Pulse train ratio 1, pulse train ratio 2
When starting a movement :
1) [FWD]/[REV]
The brake timing is turned on simultaneously, when control input ([FWD] or [REV]) signal is on.
After the brake release time (system para. 83) has elapsed, a rotation starts assuming that brake has actually been
released. If [FWD] or [REV] has been turned off during the brake release time, the motor will not start rotation.
2) Pulse train ratio 1/Pulse train ratio 2
The brake timing is turned on simultaneously, when the control input signal is on.
After the brake release time (system para. 83) has elapsed, pulse train input becomes valid assuming that it has been
actually released. If the control input signal has been turned off during the brake release time, the pulse train input is
invalid.
When terminating the movement :
1) [FWD]/[REV]
When [FWD] or [REV] has turned off, the motor starts deceleration. After the speed zero [NZERO] signal
on is confirmed, brake timing turns off, and when brake operation time (system para. 82) has elapsed, the
amplifier turns P-action signal on. The same procedure as when starting a movement above, is performed if
a rotational command is turned on during the brake operation time.