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6-5
IM 01B04K01-02E
Maintenance
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App
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6.3 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.
6.3.1 Check for SKYD-10x and SKYD-20x
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 6-2.
(b) Set the parameter write protect (W.P.) of setting jumper to OFF.
(c) Turn on the power while the equipment is connected to the instrument, and allow a warm-
up period of about 5 minutes.
(d) Connect JHT200 Handy Terminal.
(e) Call the setting (alarm) items, E: SET(ALM).
(f) Set “DIRECT” for E07: ALM1 ACTION.
(g) Set “NRM DE-ENERGIZED” for E19: RLY1 ACTION.
(h) Set a value equivalent to 0% for E01: SET POINT1. (Example: Set “0.0”.)
(i) Vary the input and confirm that the voltage when the alarm1 relay action indicator lamp on
front panel turns on is within ±0.2% of measuring range.
(j) 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 ±0.2% of measuring
range.
(k) 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 ±0.2% of measuring
range.
(l) For SKYD-2xx, 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.
(m) After completing the check, set the parameter write protect (W.P.) of setting jumper to
ON as necessary.
6.3.2 Check for SKYD-30x
Two inputs are supported on the SKYD-30x. The deviation alarm operates in conjunction
with the input deviation. Input deviation is the difference between input 1 and input 2. The
formula is “input deviation = input 1-input 2”. For example, if input 1 is 5V and input 2 is 3V,
the difference is 2V and the input deviation is + 50%.
Set the alarm set value to E05: SET POINT1 or E06: SET POINT2 in the same way as
SKYD-10x and -20x, and check the deviation alarm action.
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