Precision Digital PD6300 - Manual (Page 60)

Model PD6300 Pulse Input Rate/Totalizer Instruction Manual
60
Time Delay Operation
The following graphs show the operation of the time delay function.
Set
Reset
Relay
LED
*
Input
On Time Delay
>=Tdelay
Set
Reset
Relay
Input
Off Time Delay
>=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-nmAn)” reset mode is selected, the
LED follows the reset point and not the relay state when the re-
lay is acknowledged.