Mitsubishi Electric FR-A700 Series, Technical Manual

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57
1
S
PECIFI
C
A
T
IONS
SPECIFICATIONS
1.4.13 Reset signal (RES)
(common)
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
*1
for more than 0.1s. When the shorting
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 , set "62" to any of [
Pr.178 to
182 Input terminal function selection
] to assign the
function.
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.
common
D700
Setting reset input selection [Pr. 75]
[Pr. 75] Setting Reset Selection Disconnected PU Detection PU Stop Selection
0 Reset input normally enabled
If the PU is disconnected,
operation will be continued.
Pressing decelerates the
motor to a stop only in the PU
operation mode.
1
Reset input is enabled only when the
protective function is activated.
2 Reset input normally enabled When the PU is disconnected,
error is displayed on the PU and
the inverter trips.
3
Reset input is enabled only when the
protective function is activated.
14 (initial value) Reset input normally enabled
If the PU is disconnected,
operation will be continued.
Pressing decelerates the
motor to a stop in any of the PU,
external and communication
operation modes.
15
Reset input is enabled only when the
protective function is activated.
16 Reset input normally enabled When the PU is disconnected,
error is displayed on the PU and
the inverter trips.
17
Reset input is enabled only when the
protective function is activated.
Reset Input Timing Chart during Normal Operation
ON
ON
ON
T
When motor is restarted
during coasting, inverter
activates current
limit to start acceleration.
Coasting to stop
(Indicates motor speed)
Ordinary acceleration
O
u
tp
ut
f
req
ue
nc
y
(
H
z
)
RES
STF (STR)
Coasting
Coasting time
T: Should be longer than the time of coasting to stop.
Approx. 1s Approx. 1s