The output of the process control, like the import/export control,

is the percentage of rated load setpoint to the individual generators in isochronous

load sharing.

An adjustable ramp allows smooth entry and exit from the process control mode.

When the process control mode is selected, the load reference is ramped in a

direction to reduce the error between the process input and the process

reference. When the error is minimized or the reference first reaches either the

high or low specified pull-in limits, the process controller is activated. When the

load reference output reaches either 100% or 0%, the control will maintain that

load reference until process control is established. The MSLC is not capable of

overloading or reverse powering in order to attempt to meet the process

reference. The high and low limit switches mentioned above can be used to

indicate that either too many or too few generators are on-line to maintain the

process within its limits.