P
RO
V
U
™ PD6088/PD6089 Modbus
®
Scanner
Instruction Manual
40
Time Delay Operation
The following graphs show the operation of the time
delay function.
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-nmAn
)”
reset mode
is selected, the LED follows the reset point and not
the relay state when the relay is acknowledged.
Relay Sampling Operation
When the signal crosses the set point, the relay trips
and the sample time starts. After the sample time has
elapsed, the relay resets. The cycle repeats every
time the set point is crossed, going up for high alarms
and going down for low alarms.
The sample time can be programmed between 0.1
and 5999.9 seconds.
