GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 3 Paramters/Functions
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The rate of change of the speed reference is limited to the accel eration rate when the
magnitude of the speed r eference is increasing. The rat e of change of the speed
reference is limited t o the deceleration rate when the ma gnitude of the speed
reference is decreasin g.
When an emergency stop is comm anded, the Speed Reference Ramp decelerates the
speed reference to zero at a rate defined by Emerg ramp rate. Emergency stop act
indicates that an emer gency stop has been commanded. M ore information on
Emergency stop act is available in the Stopping Commands and Modes function help.
Related diagrams
• Speed Reference Ramp (Ra mp)
Speed Reference Rever se
The Speed Reference Reverse fun ction reverses the speed referen ce in response to a
user request.
Function inputs
The primary input to the Speed Reference Reverse function is the speed reference
signal from th e Speed Reference Generation function (which is either the local or
remote speed reference). This signal is not available as a drive variable.
The following table specifies the input parameters to the Speed Reference Reverse
function.
Parameter Description
Reverse select Selects the user reverse request when Local mode
active is False.
The following table specifies the input variables to the Speed Reference Reverse
function.
Variable Description
Local rev request User reverse request when Local mode active is True,
changes as DDI reverse button is pressed.
Function outputs
The following table specifies the output variables of the Speed Reference Reverse
function.
Variable Description
Speed reference Speed reference which is the local or remote speed
reference and which has possibly been reversed. RPM
Diagnostic variables
The following table sp ecifies the Speed Reference Reverse diagnostic variables.
Variable Description
Reverse mod e active Indi cates whether t he drive recogni zes a user revers e
request.