YOKOGAWA YewSeries 80, User Manual

Page: 48 / 66

6-6
IM 01B04K02-02E
6.3.2 Check of Alarm Set Point
• For details of operation and adjusting procedures of JHT200 Handy Terminal, refer
to the instruction manual ‘‘JHT200 Handy Terminal’’ (IM 77J50H01-01E).
• Do not turn off the power of the instrument during adjustment.
Use JHT200 Handy Terminal for check.
The procedure for check is describes below.
(a) Connect the test equipment corresponding to each of input referring to Figure 6-1
through Figure 6-3.
(b) For thermocouple input, set reference junction compensation to OFF temporarily.
(c) Set the parameter write protect (W.P.) of setting jumper to OFF.
(d) Turn on the power while the equipment is connected to the instrument, and allow a
warm-up period of about 5 minutes.
(e) Connect JHT200 Handy Terminal.
(f) Call the setting (alarm) items, E: SET(ALM).
(g) Set “DIRECT” for E07: ALM1 ACTION.
(h) Set “NRM ENERGIZED” for E19: RLY1 ACTION.
(i) Set a value equivalent to 0% for E01: SET POINT1. (Example: Set “0.0” for 0 to 100°C of
type K.)
(j) Vary the input and confirm that the voltage when the alarm1 relay action indicator lamp on
front panel turns on is within ±0.5% of measuring range. (Example: Voltage equivalent to
±8.2°C for type K.)
(k) Then set a value equivalent to 50% for SET POINT1. Confirm that the voltage when the
alarm1 relay action indicator lamp on front panel turns on is within ±0.5% of measuring
range. (Example: Set “50.0” for 0 to 100°C of type K.)
(l) Set a value equivalent to 100% for SET POINT1. Confirm that the voltage when the
alarm1 relay action indicator lamp on front panel turns on is within ±0.5% of measuring
range. (Example: Set “100.0” for 0 to 100°C of type K.)
(m) For SALD-724, set E08 and E20 of alarm 2 as described above. Set the value
equivalent to 0%, 50% and 100% for E02 and confirm as above.
(n) After completing the check, set the parameter write protect (W.P.) of setting jumper to ON
as necessary.
(o) For thermocouple input, set the reference junction compensation to ON.
Table 6-1 Relationship between Relay Action Indicator Lamp and Alarm Output
Indicator Lamp Condition of Alarm Output
ON (illuminated) Between terminals A and B OPEN
Between terminals J and B CLOSE
Between terminals F and H OPEN
Between terminals K and H CLOSE
OFF (extinguished) Between terminals A and B CLOSE
Between terminals J and B OPEN
Between terminals F and H CLOSE
Between terminals K and H OPEN
F, H and K terminals are for SALD-724 only.
6.3 Adjustment and Check