York YK-EP Operation And Maintenance Manual page 182

4. Trigger Action
a. Delay of Trigger Delay
After the desired triggers are set, the START key on the TREND Screen must be manually pressed
before the triggers will be evaluated. While waiting for the triggers to start or stop data collection, a
status message is displayed in the upper right corner of the TREND Screen describing the pending
action.
Table 189: Display only
Field/LED name
None
Table 190: Programmable
Button Access level
Primary
Operator
Trigger
Primary
Operator
Operator
Primary Test Operator
Trigger
Operator
Action
Trigger Delay Operator
Primary to
Secondary Operator
Operator
182
Description
Description
Selects the first parameter to be evaluated. Selection is made from
the Slot Numbers listing on the TREND COMMON SLOTS Screen
or the Master Slot Numbers List in this manual. Setting this Slot
Number to zero disables the Primary Trigger.
Selects the comparator for the Primary Trigger's relationship to the
Primary Test. If the Primary Trigger is an analog value, selections
are: <, <=, =, =>, >. If the Primary Trigger is a digital event, selections
are: Equal To, Not Equal To.
Selects the value or condition that the Primary Trigger is compared
to. Selection ranges from the Primary Trigger minimum value to the
Primary Trigger maximum value.
Selects whether the trend data collection will Start or Stop when the
trigger comparisons are true. If set to Start, data collection will stop
after one screen of data is collected.
Allows the data collection start or stop to be delayed after the
triggers evaluate as true. The delay is selectable from 1 to 864000
seconds (10 days). Display is in days, hours, minutes and seconds.
The delay timer begins when the triggers evaluate as true. If the
Trigger Action is set to Start, data collection will begin after the
triggers evaluate as true and the delay timer has elapsed. If the
Trigger Action is set to Stop, data collection will stop after the
triggers evaluate as true and the delay timer has elapsed.
Selects whether the Primary Trigger, Secondary Trigger or both
have to be true in order to start or stop data collection. Selections
are AND, OR, XOR and None. If NONE is selected, the Secondary
Trigger is disabled.
Data collection will start/stop (as selected with Trigger Action) when:
• If AND selected: Both Primary AND Secondary are true
• If OR selected: Either Primary OR Secondary (or both) are true
• If XOR selected: Either Primary OR Secondary (but not both)
are true
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YK-EP Style B Centrifugal Chiller