Yokogawa Button Operated MV2000 - Manual (Page 264)

13-2 M-4660
Item Specifications
Thermocouple burnout * Burnout upscale/downscale selectable (for each channel)
Normal: 2 kΩ or less, burnout: 100 kΩ or more (parallel capacitance of 0.01 µF or less)
Detection current: Approx. 10 μA
1-5 range burnout * Burnout upscale/downscale selectable (for each channel)
Burnout detection: Greater than the scale upper limit + 10% of scale width or less than the
scale lower limit – 5% of scale width
TC reference junction compensation
Internal reference junction compensation or external reference junction compensation
Filter function Takes the moving average of the input values (for each channel). Moving average data points:
2 to 400
Computation
Difference computation Computable range: DC voltage, TC, RTD, and DI
Linear scaling Computable range: DC voltage, TC, RTD, and DI
Scalable range: –30000 to 30000. The decimal place is anywhere that values will have less
than four fractional digits.
Unit:Up to six characters
Range-out detection: You can configure the MV to indicate a range-out when a value falls
outside ±5% of the scale range.
Square root computation Takes the square root of the input and apply linear scaling
Computable range: DC voltage
Scalable range and unit: Sam as linear scaling
Low-cut: Set the low-cut point to a value in the 0.0% to 5.0% of the span
Range-out detection: Same as linear scaling
1-5V Computable range: 1-5
Scalable range and unit: Sam as linear scaling
Low-cut: The low-cut point is fixed to the span lower limit.
Range-out detection: Same as linear scaling
* In fast sampling mode, the MV cannot detect burnouts on all measurement channels within a scan interval. The MV may
not detect a burnout for the following number of measurements, if measurement is started in a burnout condition, or after
a burnout condition occurs.
RD-MV1004, RD-MV1008, RD-MV2008: a maximum of four measurements
RD-MV1006, RD-MV1012, RD-MV1024, RD-MV2010, RD-MV2020, RD-MV2030, RD-MV2040, RD-MV2048: a maximum
of two measurements
Alarms
Item Specifications
Number of alarms Up to four alarms (levels) for each measurement channel
Alarm types High limit, low limit, difference high limit, difference low limit, high limit on rate-of-change alarm,
low limit on rate-of-change alarm, delay high limit, delay low limit
Alarm delay 1 to 3600 s (for each channel)
Rate-of-change calculation interval of rate-of-change alarms
1 to 32 times the scan interval (common to all channels)
Alarm output Output to the internal switch
Number of internal switches: 30
Internal switch operation: AND/OR operation selectable
Hysteresis High and low limit alarms: 0.0 to 5.0% of the span (common to all channels)
Difference high and low limit alarms: 0.0 to 5.0% of the span (common to all channels)
Display Displays the status on the respective operation screen and an alarm icon on the status display
section when an alarm occurs.
Display operation: Hold or not hold the display until the alarm output release operation.
Alarm hide function (no alarm logging function)
Not display alarms nor record to the alarm summary (for each channel)
Alarm information Displays a log of alarm occurrences on the alarm summary.
13.1 Signal Input and Alarm