Instruction Manual

Limiting control

Limiting with continuous output. Limiting control with three-point stepping output can be realized by using a continu

ous controller with the OVC function. A position controller (three-point stepping) provides override control.

Override (limiting) control using a three-point stepping output

Override control is also possible by means of a classical three-point stepping controller. The positioning signals of the

limiting controller must be connected as shown in the example Fig.: 95.

9499-040-82711

Process value calculation III-269

Limitation

controller

OPEN

positioner

e.g. flow

e.g. pressure

repeater

Fig.:95 Limit control with motor stepping controller

Fig.: 96 Limit control with continuous controller