Yokogawa Value Series FX1000 - Manual (Page 23)

1-14
IM 04L21B01-01EN
• Alarm Indication
Alarm mark, alarm type, and measured value are displayed as follows according to
the alarm status.
Alarm
Release
Red None Red None Red Red None None None None None
Alarm ACK Alarm ACK
Occurrence
When indication is
set to non-hold
When indication is
set to hold
Alarm type
Red Blue Red Blue Red Red Blue Blue Blue Blue Blue Measured
value
Blinking
red
Blinking
green
Blinking
red
Green Red Red Green Green Green Green Green Alarm mark
Digital Display
Displays the measured data numerically using large numbers. For the operating
procedure, see section 4.2.
Unit
Tag or channel number
Alarm mark
Measured value
Note
• Numeric display of measurement channels
If a measured value of a measurement channel is over range (see below), the measured
value is indicated as “+Over” or “–Over.” If a burnout is detected on a channel whose
burnout detection function is enabled, the word “Burnout” is indicated. Otherwise, a numeric
value is displayed.
Over range of measurement channels
• For DC voltage input, over range occurs when the measured value of the measurement
channel exceeds ±5% of the measurable range. For example, the measurable range
when the measurement range is 2 V is –2.000 to 2.000 V. If the measured value exceeds
2.200 V, + over range occurs; if the measured value falls below –2.200 V, – over range
occurs.
• For thermocouple or RTD input, over range occurs when the measured value exceeds
approximately ±10°C of the measurable range. For example, the measurable range
when the measurement range is R is 0.0 to 1760.0°C. If the measured value exceeds
approximately 1770.0°C, + over range occurs; if the measured value falls below
approximately –10.0°C, – over range occurs.
• For channels that are linearly scaled, + over range occurs when the value exceeds
30000 excluding the decimal point; – over range occurs when the value falls below
–30000. However, + over range can be changed to greater than or equal to 105% of the
scale width and – over range to less than or equal to –5% of the scale width within ±
30000.
For the setting procedure, see section 3.11.
• Numeric display of computation channels
See section 1.8, “Computation and Report Functions (/M1, /PM1, and /PWR1 options).”
1.3 Display