
74 Program features
The mode of the emergency stop is selected by parameter
. The following modes are available:
• Off1: Stop along the standard deceleration ramp defined for the particular
reference type in use
• Off2: Stop by coasting
• Off3: Stop by the emergency stop ramp defined by parameter
.
With Off1 or Off3 emergency stop modes, the ramp-down of the motor speed
can be supervised by parameters
and
Emergency ramp supervision delay
.
Notes:
• The installer of the equipment is responsible for installing the emergency
stop devices and all additional devices needed for the emergency stop
function to fulfill the required emergency stop categories.
• After an emergency stop signal is detected, the emergency stop function
cannot be canceled even though the signal is canceled.
• If the minimum (or maximum) torque limit is set to 0%, the emergency stop
function may not be able to stop the drive.
• During an emergency stop, the speed and torque reference parameters such
as reference ramp shapes (
) are
not considered.
Settings and diagnostics
Parameters
),
) and
Emergency ramp supervision delay
).
Events: -
Motor thermal protection
The control program features two separate motor temperature monitoring
functions. The temperature data sources and warning/trip limits can be set up
independently for each function.
The motor temperature can be monitored using
• the motor thermal protection model (estimated temperature derived
internally inside the drive), or
• sensors installed in the windings. This will result in a more accurate motor
model.
The motor thermal protection model fulfills standard IEC/EN 61800-5-1 ed. 2.1
requirements for thermal memory retention and speed sensitivity.
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