4–17Component Test Procedures
Publication 1336 IMPACT-6.2 – March 1998
Important: Before you remove connections and wires from the
drive components, mark the connections and wires to
correspond with their component connections and
terminals to prevent incorrect wiring during assembly.
1. Remove power from the drive.
2. Check for zero volts at TB1 terminals +DC and –DC.
3. Check for absence of control voltage at:
• TB10
• TB11
• L Option Board (if used)
4. Disconnect the Thermistor from Connector J1 on the Main
Control Board.
5. Allow the drive to cool down to room temperature.
6. Set your meter to test resistance.
7. Measure the resistance across the Thermistor wires. Nominal
meter reading should be 100K ohms at room temperature.
8. If the Thermistor reading measures other than the nominal value,
replace the Thermistor. Refer to Chapter 5 – Part Replacement
Procedures, Thermistor.
To Next Page
Loading...
