Precision-digital PD6000 User Manual download pdf (Page 54)

Model PD6000 Analog Input Process Meter Instruction Manual

Time Delay Operation

The following graphs show the operation of the time delay function.

Set

Reset

Relay

LED

Input

On Time Delay

<Tdelay <Tdelay >=Tdelay

Set

Reset

Relay

Input

Off Time Delay

<Tdelay <Tdelay >=Tdelay

LED

When the signal crosses the set point, the

On time delay timer starts

and the relay trips when the time delay has elapsed. If the signal drops

below the set point (high alarm) before the time delay has elapsed, the

On time delay timer resets and the relay does not change state. The

same principle applies to the

Off time delay.

* Note: If “

Automatic or Manual (

A-mAn

)” reset mode is selected, the

LED follows the reset point and not the relay state when the re-

lay is acknowledged.

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Precision-digital PD6000 User Manual Page 54