Yokogawa Value Series FX1000 - Manual (Page 87)

3-14 IM 04L21B01-01EN
• Alarm > Relay
Select whether to turn On or Off the relay output.
• Alarm > No.
Set the output relay number or internal switch number when performing relay output.
• Alarm > Detect
This item appears when the alarm hide function (see section 3.6) is turned On. Select
whether to show or hide the alarm indication when an alarm occurs. If set to Off, a
signal is output to the alarm output relay or internal switch when an alarm occurs, but
it is not indicated on the screen. The alarm is also not recorded in the alarm summary.
• Alarm delay > Time (for delay high/low limit alarms)
Set the alarm delay time to an integer in the range of 1 to 3600 s.
Note
• The alarm delay time takes on a value that is an integer multiple of the scan interval. For
example, if the alarm delay time is set to 5 s when the scan interval is 2 s, the actual delay
time is 6 s.
• The delay alarm has the following special operations.
• If the computation is stopped in a condition in which the computed value is exceeding the
alarm setting when a delay alarm is set on a computation channel, the alarm is turned
On after the specified period (delay time) elapses.
• The alarm detection operation is reset if a power failure occurs. The operation restarts
after the power recovers.
• If the alarm setting of the delay high limit alarm is changed when an alarm is already
activated and the input is greater than or equal to the new setting, the alarm continues.
For all other cases, the alarm detection operation starts at the new setting. This is also
true for the delay low limit alarm.
3.7 Setting Alarms on Channels