AFP VERSION #5 | ANALOG TO FLOATING POINT V#5 | ACI

ANALOG TO FLOATING POINT V#5

Description

The AFP allows an analog (voltage or current) signal to control a floating point actuator. It converts an analog signal into two relay contact outputs (one increase/one decrease). The isolated floating point output can be controlled by any one of nine analog input signal ranges (using an offset jumper). Upon power-up, the decrease relay will drive 100% of the chosen timing range to ensure that the output is at its minimum position. On a loss of power, the output relays will be open and no signal will be generated. The actuator will remain at the last commanded position unless it has "spring return". The AFP output rate of change (sixteen ranges, in eight versions) is DIP switch selectable. In Version 2, upon power-up, the decrease relay will drive 200% of the chosen timing range to ensure that the output is at its minimum position. At 2 to 5% or below and 95 to 98% or higher of the input signal, the up or down contact will drive for an additional 100% of the chosen timing range. This assures that the control signal and actuator are in synchronization. In Version 4, the relays stay on at minimum and maximum voltage. In Version 5, the AFP relays stays on with 5% of maximum or minimum input voltage. There is no overshoot on maximum or minimum input voltage. In Version 7, upon power-up, the increase relay will drive 105% of the chosen timing range to ensure that the output is at its maximum.

Applications

Electric Actuator Control