Yokogawa Button Operated DX2000 - Manual (Page 103)

Measurement Channels and
Alarms
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IM 04L42B01-01E
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Index
3.5 Setting the Auxiliary Alarm Function
Set the alarm display and output relays.
For a description of the functions, see section 1.2.
Setup Screen
Press MENU (to switch to setting mode), hold down FUNC for 3 s (to switch to basic
setting mode), and select the Menu tab > Alarm.
Setup Items
• Basic setting > Reflash
To set the reflash operation on the alarm output relay, select On. The reflash function
is set on the first three output relays.
Setting Description
Off Reflash is not used.
On Reflash is used. The relays are deactivated for approximately 500 ms.
On-1s Reflash is used. The relays are deactivated for approximately 1 s.
On-2s Reflash is used. The relays are deactivated for approximately 2 s.
• Basic setting > Rate of change
• Decrease
Set the interval for the rate-of-change calculation of the low limit on rate-of-change
alarm in terms of the number of sampled data points (1 to 32). The actual interval is
obtained by multiplying the value specified here by the scan interval.
• Increase
Set the interval for the rate-of-change calculation of the high limit on rate-of-change
alarm in the same manner as the interval for the low limit on rate-of-change alarm.
• Basic setting > Indicator
You can choose to make the alarm displays behave in the following ways. When you
use the alarm annunciator function (release number 3 or later), the setting follows the
annunciator sequence.
Settings Description
Nonhold Clears the alarm indication when the alarm condition is released (returns to
normal condition).
Hold Holds the alarm indication until an alarm acknowledge operation is performed.