58 Rockwell Automation Publication 7000-TG002J-EN-P - March 2015
Chapter 2 Warning Messages
X Bypass OvrVolt 141 The measured line voltage pu, displayed in Bypass Voltage
(P117), has exceeded the Line OvrVolt Trip (P165) setting.
Synchronous transfer has been disabled.
• Verify the parameters are set properly.
• Check for possible line voltage transients.
• Verify voltage sensing board (VSB) connections and tap settings,
resistor values, and grounds.
• If voltage is too high, change tap settings on the input source to
lower voltage to an acceptable level.
X Bypass Phase Seq 144 The bypass phase sequence does not match the phase sequence
of the input to the drive. Synchronous transfer has been
disabled.
• The drive will not allow a synchronous transfer unless the phasing
is the same.
• Confirm the phase sequences and swap cables if necessary.
X Bypass UnderVolt 142 The measured line voltage pu, displayed in Bypass Voltage
(P117), is less than the Line UndVolt Lvl (P167) setting.
Synchronous transfer has been disabled.
• Verify the VSB connections and tap settings, and check resistance of
VSB board. Megger board to confirm integrity.
• Check for possible source voltage supply problems.
• Use a multimeter and oscilloscope to check voltages on the drive
test points.
X Bypass VoltUnbal 143 The measured unbalance in parameter Bypass Voltage (P117)
has exceeded the trip setting in parameter LineVoltUnbalTrp
(P271). Synchronous transfer has been disabled.
• Verify the VSB connections and tap settings, and check resistance of
VSB board. Megger board to confirm integrity.
• Check for possible source voltage supply problems.
• Use a multimeter and oscilloscope to check voltages on the drive
voltage test points.
X X X X Cable Resistance 215 This warning indicates that the programmed value of cable
resistance ESP Cable Resis (P750) does not match the stator
resistance value determined through auto tune.
• Verify the length of the cable and cable resistance per unit length or
autotune the drive again.
X CMC Blcked Exhst 481 Low air pressure reading coming back from analog air pressure
transducer located the Common Mode Choke (CMC) section.
• Be sure that there are no obstructions to the path of the incoming
and/or outgoing air flow.
• Check for cooling fan deterioration.
• Verify if the warning setting in parameter CMC AirExhst Wrn (P811)
matches the factory recommended value.
X CMC Blcked Inlet 480 High air pressure reading coming back from analog air pressure
transducer located in the CMC section.
• Be sure that there are no obstructions to the path of the incoming
and/or outgoing air flow.
• Check for cooling fan abnormal operation.
• Verify if the warning setting in parameter CMC AirInlet Wrn (P812)
matches the factory recommended value.
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Warning Message Warning
Code
Description Recommended Action(s)
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