- General Electric Computer Accessories User Manual

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 acceleration rate when the
magnitude of the speed reference is increasing. The rate of change of the speed
reference is limited to the deceleration rate when the magnitude of the speed
reference is decreasing.
When an emergency stop is commanded, the Speed Reference Ramp decelerates the
speed reference to zero at a rate defined by Emerg ramp rate. Emergency stop act
indicates that an emergency stop has been commanded. More information on
Emergency stop act is available in the Stopping Commands and Modes function help.
Related diagrams
• Speed Reference Ramp (Ramp)
Speed Reference Reverse
The Speed Reference Reverse function reverses the speed reference in response to a
user request.
Function inputs
The primary input to the Speed Reference Reverse function is the speed reference
signal from the 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 specifies the Speed Reference Reverse diagnostic variables.
Variable Description
Reverse mode active Indicates whether the drive recognizes a user reverse
request.