Emerson Epsilon Eb Series Reference Manual page 71

Epsilon Eb and E Series EN Drives Reference Manual
drive. Once the axis is driven off the limit switch, the fault will be cleared and the "L" will
disappear.
If both Travel Limit input functions are activated simultaneously, the drive will respond as if
the Stop input function has been activated and will use the Stop Deceleration ramp.
Stop
The Stop input function, when activated, will cause motion to stop regardless of motor
direction or the operating mode. The Stop Deceleration Ramp defines the rate of velocity
change to zero speed.
Activating the Stop input function causes the drive to change to Velocity mode. Therefore, if
you are operating in Torque mode, the drive must be tuned to the load to prevent instability
when activating the Stop input function.
For example, if an application is operating in Torque mode at 1000 RPM, and the Stop input
function is activated with a Stop Deceleration Ramp of 500 ms/kRPM, the motor will
decelerate to a stop in 500 ms.
Warning
When the Stop input function is deactivated, the previous operating mode is restored
within 400 µs and the drive and motor will respond immediately with no ramping unless
ramping is part of the selected mode.
Reset
This input is used to reset fault conditions and is logically OR'ed with the Reset button. A
rising edge pulse is required to reset faults.
Velocity Preset Lines 1, 2 and 3
The Velocity Preset Lines are used to select one of the four pre-defined velocities using the
binary selection patterns shown below.
If you select a different Preset Velocity, the drive will immediately ramp to the new velocity
using the new acceleration ramp without stopping.
Velocity Preset #3
0
0
0
0
1
1
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Velocity Preset Line #2 Velocity Preset Line #1
0
0
1
1
0
0
Selected Velocity and Accel/
Decel Preset #
0 0
1 1
0 2
1 3
0 4
1 5