6-7
2) Procedure for adjusting the pilot relay for the single-acting actuator
(Adjustment from double-acting type to single-acting type)
Step Work
1
Rotate the pilot relay adjustment screw counterclockwise
(loosening direction) until it stops.
Output air pressure Pout2 becomes 0.
2
Perform auto setup.
If auto setup fails, refer to 5-1-5, “Auto Setup Failure” to solve
the problem. If there is still a problem and auto setup cannot
be completed, Pilot Relay Type will not be changed to Single
Acting and the pilot relay cannot be used for a single-acting
actuator. In this case please stop adjustment and contact us.
3
Perform operation checks including a five-point check (0, 25,
50, 75, 100% opening).
6-5 Insulation Resistance Test
Cautions
In principle, do not perform the insulation resistance test. This test may damage the built-
in varistor for absorbing surge voltage. If it is absolutely necessary to perform this test,
carefully follow the specified procedure.
1) Test procedure
• Remove external wiring from the device.
• Short-circuit the FB input signal terminals + and -.
• Perform the test between each of the short-circuited parts and the grounding terminal.
• The applied voltage and evaluation criteria are as shown in the table below.
Handling Precautions:
Do not apply a voltage equal to or higher than the value below to prevent the
instrument from being damaged.
2) Evaluation criteria
The evaluation criteria for this test is as shown below.
Test Evaluation criteria
Insulation resistance
2×10
7
Ω or higher at a test voltage of 25 VDC (at 25°C, 60%RH
or less)
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