<4. Diagnostics >
4-6
IM 01C50T01-02EN
(8) Temperature Cycle Diagnostics (only for
YTA710)
This function displays the number of temperature
fluctuations that may cause failure of the sensor.
The function is enabled only when Sensor type is
set to TC or RTD, and indicates how many times
the temperature alternately hits (or crosses) the
upper and lower limits. When the number of times
exceeds the threshold, an alarm will be issued.
When the threshold is set to 0 the function is not
enabled.
• Procedure to call up the display
Device setup → Diag/Service → Diagnostics →
Temp Cycle Diag
Temp Cycle Val Unit: The unit of temperature
Temp Cycle Upr Val: Upper limit
(initial setting: 2000ºC)
Temp Cycle Lwr Val: Lower limit
(initial setting: −273ºC)
Temp Cy Alm thrsld: Threshold for outputting the
alarm
rst Temp Cycle Cnt: Reset the number of cycles
Output:
Number of cycles (Temp Cycle S1 Cnt, Temp
Cycle S2 Cnt)
Alarm output (S1 Over Temp Cycle, S2 Over
Temp Cycle)
Table 4.3
Sensor1 diagnostics information
Parameter
Sensor type
TC
RTD 3-wire
RTD 4-wire
S1 RP23
(Resistance between terminal 2 and 3)
0.0
0.0
S1 RC1
(Resistance between sensor cable and terminal connection to terminal1)
0.0
0.0
S1 RC2
(Resistance between sensor cable and terminal connection to terminal2)
0.0
S1 RC3
(Resistance between sensor cable and terminal connection to terminal3)
0.0
S1 RC4
(Resistance between sensor cable and terminal connection to terminal4)
0.0
0.0
: Display sensor diagnostics information (resistance).
Table 4.4
Sensor2 diagnostics information
Parameter
Sensor type
TC
RTD 3-wire
S2 RP43
(Resistance between terminal 2 and 3)
0.0
S2 RC4
(Resistance between sensor cable and terminal connection to terminal4)
0.0
S2 RC3
(Resistance between sensor cable and terminal connection to terminal3)
0.0
: Display sensor diagnostics information (resistance).
NOTE
Release the Device Status mask in order to
output the Sensor 1(2) Temp Cycle alarm. (Initial
value is set in the mask)
(9) Sensor Diagnostics Information
Information obtained by the sensor diagnostics are
displayed in the parameters below. You can take
advantage of the preventive maintenance of the
sensor by obtaining this information periodically.
