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3. This step is not always necessary. If step 2 is not sufficient enough to stop the motor and the DC volt-
age increases again, the inverter takes an other action similar like step 2.
After these steps the inverter runs during 1.5s at minimum speed and decellerates to zero following the pro-
grammed ramp. This last process is to be sure that the output frequency decreases to zero so that the linear
area of the Torque/slip curve is reached.
Using an Emergency Stop
Set a multi-function input terminal (H1-
) to 28 to 2B (emergency stop) to decelerate to a stop at the decel-
eration time set in C1-09. If inputting the emergency stop with a NO contact, set the multi-function input ter-
minal (H1-
) to 28 or 2A or if inputting the emergency stop with a NC contact, set the multi-function input
terminal (H1-
) to 29 or 2B.
After the emergency stop command has been input, operation cannot be restarted until the Inverter has
stopped. To cancel the emergency stop, turn OFF the run command and emergency stop command.
Related Parameters
The motor will overheat with this stopping method. Be carefull to guarantee good ventilation to the
motor. Most AC motors have a thermal resistor or a clixon built in.
It is strogly recommended to use the thermal resistor in case of overheating
Param-
eter-
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
LCD Display
C1-09
Emergency stop time
The deceleration time when the multi-function input
“Emergency (fast) stop” is ON.
This time will be used when a fault is detected, for which
emergency stop was programmed.
0.0 to
6000.0
10.0 s
No
A
Fast Stop Time