Lenze E94P PositionServo with MVOB - Manual (Page 56)

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Parameters
5.5.6 Analog Input Dead Band
Allows the setting of a voltage window (in mV) at the reference input AIN1+ and AIN1- (P3 pins 24 and
25) such that any voltage within that window will be treated as zero volts. This is useful if the analog input
voltage drifts resulting in motor rotation when commanded to zero.
5.5.7 Analog Input Offset
This function allows the drive to automatically adjust the analog input voltage offset. To use it, command
the external reference source input at AIN1+ and AIN1- (P3 pins 24 and 25) to zero volts and then click the
[<<] button adjacent to the [Analog Input Offset] box. Any offset voltage at the analog input will be adjusted
out and the adjustment value will be stored in the [Analog input offset] parameter.
5.6 Digital I/O
5.6.1 Digital Output
The PositionServo has four programmable digital outputs. These outputs can be assigned to one of the
following functions, or used by the drive’s internal User Program.
Not Assigned No function assigned. Output can be used by the User program.
Zero Speed Output activated when drive is at zero speed, refer to “Velocity Limits Group” (section 5.7) for
settings.
In Speed Window Output activated when drive is in set speed window, refer to “Velocity Limits Group” (section
5.7) for settings.
Current Limit Output activated when drive detects current limit.
Run Time Fault A fault has occurred. Refer to section 7.3 for details on faults.
Ready Drive is enabled.
Brake Output is active for the time programmed by the Brake Release Delay parameter after the
drive is enabled and deactivates after the drive is disabled for control of a motor mechanical
brake.
In position Position mode only. Refer to the PS Programming Manual.
5.6.2 Digital Input De-bounce Time
Sets de-bounce time for the digital inputs to compensate for bouncing of the switch or relay contacts. This
is the time following an input transition when any further transitions will be ignored (not recognized by the
drive).
5.6.3 Hard Limit Switch Action
Digital inputs IN_A1 and IN_A2 can be used as limit switches if their function is set to “Fault” or “Stop and
Fault”. Activation of these inputs while the drive is enabled will cause the drive to Disable and go to a Fault
state. The “Stop and Fault” action is available only in Position mode when the “Reference” parameter is
set to “Internal”, i.e., when the source for the motion is the Trajectory generator. Refer to the PositionServo
Programming Manual for details on “Stop and Fault” behavior.
5.6.4 Enable Switch Function
The Enable input (IN_A3) on PositionServo can be set to function as either a ‘Run’ Input or an ‘Inhibit’ Input.
The run function allows input A3 control of switching the drive between enable and disable states (Enabling
or disabling output to the motor). The Run function is typically used in centralized systems where a PLC or
Motion Control output is required to control the enable/disable of the drive.
When input A3 becomes active the drive will go immediately to an enable state, and when it becomes
inactive the drive will go immediately to a disabled state.