AP4830 Ver la hoja de datos (PDF) - Unspecified

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AP4830

DC Programmable Up / Down Ramp Generator

Unspecified 

DC Programmable Up/

Down Ramp Generator

MODEL

Benefits

! Adjustable Ramp Rate &

Setpoint

! Built-in Reference Supply

for External Programming

! TTL Setpoint Status

! Easy Plug-in Installation/

Low Mean-Time-to-Repair

! AC Line Powered

• Three Year Warranty

Provides an Output Ramp to Set-

point with Adjustable Ramp Rate

DESCRIPTION

The AP4830 provides a DC output that can be programed to

ramp up or down to a setpoint by supplying 0-5VDC to the

Setpoint Control (pin 6) and the Ramp Rate Control (pin 10)

inputs.

Table 1: AP4830 Ramp/Setpoint

Programming

+5V Common Open

Control (Pin 11) (Pin 12)

Setpoint 100%

0%

Hold

(Pin 6) Output Output

Ramp

Rate

(Pin 10)

100 x

Base

Rate

Base

Rate

(Fastest)

An external potentiometer, typically 10KΩ or greater, may be

used to attenuate the built-in +5V reference and provide

intermediate setpoint and rate values (see Figure 1). Use a

rotary switch or relay to select multiple potentiometers for

different setpoint and rate selections. To ‘hold’ the output ramp

indefinitely, disconnect the Setpoint Control input (pin 6).

The AP4830 may require an external timing capacitor to set the

ramp base rate. Use one of the supplied capacitors or any

polarized electrolytic or tantalum capacitor. An external

contact closure from pin (13) to pin (15) or a +5V level to pin

(15) will immediately reset the output to minimum. The

setpoint status is an open collector output (pin 5) which will

sink up to 20mA when the ramp reaches the setpoint.

Protecting the

Integrity of

Industrial

Process Signals

An Invensys Company

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