Rockwell Automation Publication 20D-PM001D-EN-P - March 2019 15
Drive Start-Up Chapter 1
Table 1 - Common Causes of a Start Inhibit
Examine Parameter 156 [Start Inhibits]
Bit Description Action
1 No power is present at the Enable Terminal; TB2-16 Apply the enable
2, 3, 4 A stop command is being issued Close all stop inputs
5 Power loss event is in progress, indicating a loss of the AC input voltage Restore AC power
6 Data supplied by the power structure EEprom is invalid or corrupt Cycle the power - if problem persists, replace the power structure
7 Flash Update in Progress Complete Flash Procedures
8 Drive is expecting a Start Edge and is receiving a continuous signal Open all start buttons and remove all start commands
9 Drive is expecting a Jog Edge and is receiving a continuous signal Open all jog buttons and remove all jog commands
10 A conflict exists between the Encoder PPR programming (Par 232 or 242) and the
encoder configuration for edge counts (Par 233, bits 4 & 5)
Verify encoder data and reprogram
11 The drive cannot precharge because a precharge input is programmed and no
signal is present
Reprogram the input or close the precharge control contact
12
Digital Configuration
Start input configured but stop not configured Program Par 825…830 to include a stop button, rewire the drive
Run input configured but control options do not match Program Par 153, Bit 8 to “0” (2 wire control)
Start input configured but control options do not match Program Par 153, Bit 8 to “1” (3 wire control)
Multiple inputs configured as Start or Run Reprogram Par 825…830 so multiple starts, multiple runs or any combination do
not exist
Multiple inputs configured as Jog1 Reprogram Par 825…830 so only (1) is set to Jog1
Multiple inputs configured as Jog2 Reprogram Par 825…830 so only (1) is set to Jog2
Multiple inputs configured as Fwd/Rev Reprogram Par 825…830 so only (1) is set to Fwd/Rev
14 Invalid Feedback Device for Permanent Magnet Motor Control Set Par 222 to Value 5 (FB Opt Port0)
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