Emergency Stop
-
The emergency stop function shuts off the inverter output (i.e. stops the switching
operation of the main circuit elements) in response to a command from a hardware circuit
via an intelligent input terminal without the operation by internal CPU software.
Note: The emergency stop function does not electrically shut off the inverter but merely stops
the switching operation of the main circuit elements. Therefore, do not touch any
terminals of the inverter or any power lines, e.g., motor cables. Otherwise, electric shock,
injury, or ground fault may result.
-
When the emergency stop function is enabled, intelligent input terminals 1 and 3 are used
exclusively for this function, and no other functions can be assigned to these terminals.
Even if other functions have been assigned to these terminals, these are automatically
disabled and these terminals are used exclusively for the emergency stop function.
Terminal [4] function:
This terminal always serves as the a (NO) contact for the reset (RS) signal. This signal
resets the inverter and releases the inverter from the trip due to emergency stop (E37.*).
Terminal [3] function:
This terminal always serves as the b (NC) contact for the emergency stop (EMR) signal.
This signal shuts off the inverter output without the operation by internal CPU software.
This signal makes the inverter trip due to emergency stop (E37.*).
Note: If intelligent input terminal 3 is left unconnected, the cable connected to the terminal is
disconnected, or the signal logic is improper, the inverter trips due to emergency stop
(E37.*). If this occurs, check and correct the wiring and signal logic, and then input the
reset (RS) signal. Only the reset (RS) signal input from intelligent input terminal [4] can
release the inverter from tripping due to emergency stop (E37.*). (The inverter cannot be
released from the E37.* status by any operation from the digital operator.)
4
32
Operations and
Monitori
ng
4
−
32
Operations and
Monitoring
