Inverse Time - Parker 590+ DRV Product Manual

INVERSE TIME

The purpose of the inverse time is to automatically reduce the current limit in response to prolonged
overload conditions.
As the motor current exceeds an internal threshold of 103%, the excess current is integrated. The inverse time output remains unchanged until the
integrated value is equivalent to an overload of 200% current for 60s. Once this limit is reached the integral value is clamped, and the inverse time
output is decreased towards 103% at 10% per second.
Should the current drop below the 103% threshold the integrator value starts to discharge. As soon as the integrated value is less than the maximum
overload level the inverse time output is allowed to ramp back up to 200% at a rate of 10% per second.
The inverse time output parameter is internally used by the current loop.
INVERSE TIME
Parameter
INVERSE TIME
Inverse time clamp output level.
DC590+ DRV Series DC Digital Drive
Tag
203
D-71
Programming
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