Model PD6200 Analog Input Rate/Totalizer
Instruction Manual
54
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 prin-
ciple 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.