Omron CJ1W-CT021 Operation Manual page 107

Extra Functions
Configuring Rate
Measurement
CNT1: CNT2:
m+39 m+84
Rate Ranges
Rate Measurement can be configured by setting the Time-Window between 1 ms
and 9999 ms (BCD). By default (=0) the Counters are configured to have no Rate
Measurement.
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Besides the capability to measure (positive and negative) Rate Values for every
Counter two Rate Ranges (Rate Range 0 and 1) can be configured. The Rate
Ranges offer you the opportunity to undertake specific action (i.e. control the Unit
Output Pattern) when the measured Rate Values have entered a Rate Range.
Rate Ranges can represent Frequency Ranges or Rotational Speed Ranges,
making it possible to undertake action at (too high or too low Alarm) Frequencies
or Rotational Speeds.
Rate Range 0 Upper Limit
Rate Range 0 Lower Limit
Rate Range 1 Upper Limit
Rate Range 1 Lower Limit
The Data of every Rate Range is contained by 4 double words:
•
Lower Rate Range Limit, specifying the Lower Rate Limit of the Rate Range
•
Upper Rate Range Limit, specifying the Upper Rate Limit of the Rate Range
•
Output Set Pattern, specifying which Outputs must be Set if the measured
Rate Value is within the Lower- and Upper Rate Range Limits
•
Output Reset Pattern, specifying which Outputs must be Reset if the meas-
ured Rate Value is within the Lower- and Upper Rate Range Limits
The Upper Rate Range Limit must be greater than the Lower Rate Range Limit.
The Unit will generate an error if the Upper Rate Range Limit ≤ Lower Rate Range
Limit (refer to 5-2 "Error codes" for more details). Every Rate Range can be ena-
bled or disabled. If a Rate Range is disabled (by default) no action will be taken
when the Rate Range becomes active. If a Rate Range is enabled the Set & Reset
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0001-9999
Rate Value
Time-Window
Time-Window:
0000 = No Rate Measurement
(BCD)
= Time-Window in milliseconds
(BCD)
Alarm-Area
Alarm-Area
Section 3-7
Time
87