model 2704 controller installation and operation handbook - Soliton

2704 Controller Totaliser, Timer. Clock, Counter Operation
12.2.2. Off Delay Timer Mode
This timer provides a delay between the trigger event and the Timer output. If a short pulse
triggers the Timer, then a pulse of one sample time (110mS) will be generated after the delay
time.
• The Output is set to Off when the Input changes from Off to On.
• The Output remains Off until the Time has elapsed.
• If the Input returns to Off before the time has elapsed, the Timer will continue until the
Elapsed Time equals the Time. It will then generate a pulse of one Sample Time
duration.
• Once the Time has elapsed, the Output will be set to On.
• The Output will remain On until the Input is cleared to Off.
• The Triggered variable will be set to On by the Input changing from Off to On. It will
remain On until both the Time has elapsed and the Output has reset to Off.
Figure 12.2 illustrates the behaviour of the timer under different input conditions.
Input
110mS
Time
Time
Output
Elapsed Time
Triggered
Figure 12-2: Off Delay Timer Under Different Input Conditions
Installation and Operation Handbook. Part No HA026502 Issue 1.0 Apr-00 12-5