Mitsubishi Electric FR-A700 Technical Manual page 64

1.4.13 Reset signal (RES)
Used to reset the fault stop state established when the
inverter's protective function is activated. The reset signal
immediately sets the control circuit to the initial (cold)
status, e.g. initializes the electronic thermal relay function,
built-in brake resistor overheat protection circuit. It shuts off
the inverter output at the same time. During reset, the
inverter output is kept shut off. To give this reset input, turn
ON signal RES for more than 0.1s. When the shorting
*1
time is long, the operation panel or parameter unit displays
the initial screen, which is not a fault.
Operation is enabled within 1s after turning OFF signal
RES .
*1
*1 For RES signal in
D700
182 Input terminal function selection
function.
[Pr. 75] Setting
0 Reset input normally enabled
Reset input is enabled only when the
1
protective function is activated.
2 Reset input normally enabled
Reset input is enabled only when the
3
protective function is activated.
14 (initial value) Reset input normally enabled
Reset input is enabled only when the
15
protective function is activated.
16 Reset input normally enabled
Reset input is enabled only when the
17
protective function is activated.
Coasting
ON
RES
ON
STF (STR)
common
(common)
Pr.178 to
, set "62" to any of [
] to assign the
Setting reset input selection [Pr. 75]
Reset Selection
When motor is restarted
during coasting, inverter
activates current
limit to start acceleration.
Approx. 1s
T: Should be longer than the time of coasting to stop.
Reset Input Timing Chart during Normal Operation
The reset terminal is used to reset the inverter fault stop
state.
When the reset terminal is turned ON, then OFF while the
inverter is running, the motor may be restarted during
coasting (refer to the timing chart below) and the output
may be shut off due to overvoltage.
Setting either 1, 3, 15, 17 in [Pr. 75] allows the accidental
input of the reset signal during operation to be unaccepted.
*2 Frequent resetting will make the electronic thermal relay
function and brake resistor overheat protection invalid.
Disconnected PU Detection
If the PU is disconnected,
operation will be continued.
When the PU is disconnected,
error is displayed on the PU and
the inverter trips.
If the PU is disconnected,
operation will be continued.
When the PU is disconnected,
error is displayed on the PU and
the inverter trips.
Coasting to stop
(Indicates motor speed)
Coasting time
ON
Approx. 1s
T
57
SPECIFICATIONS
PU Stop Selection
Pressing decelerates the
motor to a stop only in the PU
operation mode.
Pressing decelerates the
motor to a stop in any of the PU,
external and communication
operation modes.
Ordinary acceleration
1