Coast To Stop; Emergency Stop; Emergency Stop From A Remote Location - Toshiba TOSVERT-130G2+ Operation Manual

TOSHIBA
8.1.2

Coast to Stop

This inverter is capable of instantly removing power from a rotating motor and
allowing it to coast to a stop. This can be accomplished without removing power
from the inverter. The procedure will override the inverter's normal deceleration
pattern. Activation of the coast to stop function is illustrated below:
Key
Assume the inverter is operating at 60HZ as shown in the
previous table and is in the monitor mode.
Engages the COAST to STOP command. The inverter releases
2ND
it's control of the motor allowing it to "free wheel" and coast
STOP
to a stop.
8.1.3
Key
Assume the inverter is operating at 60HZ due to some
type of remote input signal (REMOTE CONTROL).
"EOFF" flashes but the unit continues running. Pressing
STOP
STOP once more will activate the stop, however pressing
CLR CLR will cancel the procedure.
Activates the emergency stop function. A fault detection
STOP
signal is ouput via terminals FLA, FLB, FLC.
CLR
Resets the inverter and its fault detection contacts.
The inverter is now ready for normal operation.
WRT
Note:
Resetting the inverter from a remote location is accomplished by momentarily
short-circuiting terminals RST to CC. These terminals are located on the
inverter's terminal strip.
8.1.4

Emergency Stop From a Remote Location

A SPST normally closed latch-in type of switch should be connected between
ST-CC. This switch can then be located in a remote location. When the switch is
"toggled" to latch open, the motor will coast to a stop.
CAUTION
Activating the Coast to Stop
Action

Emergency Stop

The emergency stop function can only be used when operating by remote
control. When activated, the inverter can perform the same coast to a stop
function as described in section 8.1.2. In an emergency, valuable time can be
saved by being able to remove power to the motor from the local inverter instead
of from the distant remote control station. Activation of the emergency stop is
illustrated below:
Activating the Emergency Stop
Action
Do not toggle this switch ON again until the inverter is
turned OFF (the output frequency reads zero) and the motor
load has stopped rotating.
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