Troubleshooting - YASKAWA DI-101 Installation Manual

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Troubleshooting

Troubleshooting tips are provided below. Verify these points if the drive performance is not
as expected after installing the option:
• Verify all wire connections are tight.
• Verify all DI-101 PCB Fingers are fully inserted into the A1000 TB1 drive terminals and
the terminals are fully tightened.
• Verify the factory installed wire jumper is installed between A1000 
TB1 terminals SC to SP.
• Verify the signal is present at the DI-101 option input terminals by using an AC voltmeter
to measure for a 120 Vac input signal is present on any activated terminals S1 thru S8 with
respect to the X2 terminal.
• Verify the digital input is recognized by the drive by viewing Input Terminal Status
monitor parameter U1-10.
• Verify the drive Multi-Function Digital Input parameters (H1-01 through H1-08) of the
drive are set correctly for the expected S1 to S8 input terminal behavior.
◆
Preventing Noise Interference
Take the following steps to prevent erroneous operation caused by conducted electrical noise
interference:
• Use shielded wire for the signal lines less than 24 V.
• Limit the length of I/O signal wiring to less than 50 m (164 ft.).
• Use seperate conduits or cable tray separation for 120 Vac control wiring, DC signal and
other I/O wiring, main circuit power lines.
• Use noise suppression on relay coils.
• Ensure adequate system and drive grounding.
YASKAWA TOEP YEAOPT 07 A1000 Option DI-101 120 Vac Interface Installation Manual
6 Troubleshooting
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