Lenze E94P PositionServo with MVOB - Manual (Page 57)

S94H201E_13426446_EN L 55
Parameters
The inhibit function allows input A3 to inhibit (prevent) power being applied to the motor but does not provide
the enable or disable command for the drive. This function is typically used in a centralized system where
the drive’s internal programming determines when the drive should enable or disable (these statements are
executed within the drive programming). In the inhibit mode Input A3 acts as a hardware level inhibit, only
allowing the drive to go to an enable state (when instructed from the internal programming) providing the
input A3 is active. Attempting to enable from the internal user program while input A3 is inactive will cause
the drive to trip (Fault F_36) as will removal of input A3 while the drive is in an enabled state.
Input A3 cannot be bypassed, it must be present to obtain any power to the motor or motion.
5.6.5 Brake Release Delay
The Brake Release Delay controls the amount of time an output configured as “brake” waits after the drive
enables to activate the brake output. The range for Brake Release Delay is 0-2000 milliseconds and the
default value is 0ms.
5.7 Velocity Limits
In the Velocity Limits folder are 3 programmable parameters: Zero Speed, Speed Window and At Speed.
These parameters are active in Velocity Mode Only.
5.7.1 Zero Speed
Specifies the upper threshold for motor zero speed in RPM. When the motor shaft speed is at or below
the specified value, the zero speed condition is set to true in the internal controller logic. The zero speed
condition can also trigger a programmable digital output, if selected. The Zero Speed range is 0 to 100 RPM
and the default value is 10 RPM.
5.7.2 Speed Window
Speed Window specifies the width used with the “In speed window” output. The Speed Window range is 10
to 10,000 RPM and the default value is 100 RPM.
5.7.3 At Speed
At Speed specifies the speed window center used with the “In speed window” output. The At Speed range
is -10000 to 10000 RPM and the default value is 1000 RPM.
Speed Window and At Speed specify speed limits. If motor shaft speed is within these limits then the
condition AT SPEED is set to TRUE in the internal controller logic. The AT SPEED condition can also trigger a
programmable digital output, if selected.
For example if “AT SPEED” is set for 1000 RPM, and the “SPEED WINDOW” is set for 100, then “AT SPEED”
will be true when the motor velocity is between 950 -1050 RPM.