Chapter 5 Installing the Tracer MP581 programmable controller
1.Make sure that the actuator is connected but powered off.
2.Set the
The measured voltage should be less than 0.1 Vac. If the voltage is greater than this, the load may turn on and off unexpectedly. Check for the following problems:
•A shared power supply may be incorrectly connected. Check along the wire to make sure that no additional connections have been made.
•The wire may have an induced voltage somewhere along its length.
3.Set the
The measured voltage should be less than 0.1 Vdc. If the voltage is greater than this, a shared power supply may be incorrectly con- nected. Check along the wire to make sure that no additional connec- tions have been made.
CAUTION
Equipment damage!
Continue to step 4 only if you completed steps 2 and 3 successfully.
Measuring resistance may damage the meter if the voltage is too high.
4.Set the
The resistance should be greater than 500 Ω. (The analog output will not be able to reach 10 Vdc if the load resistance is less than 500 Ω.)
Checking 0–20 mA analog outputs
To check
1.Make sure that the actuator is connected but powered off.
2.Set the
The measured voltage should be less than 0.1 Vac. If the voltage is greater than this, the load may turn on and off unexpectedly. Check for the following problems:
•A shared power supply may be incorrectly connected. Check along the wire to make sure that no additional connections have been made.
•The wire may have an induced voltage somewhere along its length.
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