Precision Digital PD6080 - Manual (Page 59)

PD6080/PD6081 Super Snooper Modbus Scanner Instruction Manual
59
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 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 relay is acknowledged.