Rockwell powerflex 700s User Manual

1-2 Troubleshooting and Error Codes
Creating Fault Reports
Clear and complete fault reports are critical for analysis and repair of
modules returned to the factory.
At a minimum, perform and record the following:
• Record the contents of the fault queue (faults and times of occurrence)
• Make record of any burn marks on the rectifying module, DC-capacitors,
inverter bridge, charging resistors, balancing/precharging resistors,
printed circuit boards, bus bars, cabling and fiber-optic cabling
• Make record of any liquid and condensation marks on printed circuit
boards, components and mechanical parts
• Make record of the amount of dust and other additional particles on drive
and drive components
• Make record of any mechanical damage to the drive and drive
components
• Record the size and type of main fuses
• Record any other important marks and damage
Addressing 700S Faults
No. Name Description Action (if appropriate)
1 Abs Ovespd Det Motor speed has exceeded the limits
set in parameters 75 [Rev Speed
Limit], 76 [Fwd Speed Limit] and 335
[Abs OverSpd Lim]
• Check to see if the encoder
feedback polarity is correct.
• Check to see if the drive is in
torque mode, selected in
parameter 110 [Speed/
TorqueMode] value 2 “Torque
Ref”. If the drive is in torque
mode, verify that there is a load
present.
• Verify min./max. settings in
parameters 75 [Rev Speed Lim]
and Par 76 [Fwd Speed Lim].
Check to see if the load is
overhauling. If it is overhauling,
turn the bus regulator off using
parameter 414 [Brake/Bus Cnfg]
bit 2 “BusRef High”.
2 Vref Decel Fail The value of parameter 301 [Motor
Spd Ref] has failed to decrease
during a ramp to zero speed stop.
• This may be due to a speed trim
from parameters 21 [Speed Trim
1], 22 [Speed Trim 2] or 23 [Speed
Tr i m 3 ] .
3 Encoder 0 Loss One of the following has occurred on
encoder 0:
• missing encoder (broken wire)
• quadrature error
• phase loss
• Reconnect encoder or replace
encoder.
• Configured with parameters 365
[Fdbk LsCnfg Pri], 366 [Fdbk
LsCnfg Alt], and 367 [Fdbk
LsCnfgPosit]
4 Encoder 1 Loss One of the following has occurred on
encoder 1:
• missing encoder (broken wire)
• quadrature error
• phase loss
• Reconnect encoder or replace
encoder.
• Configured with parameters 365
[Fdbk LsCnfg Pri], 366 [Fdbk
LsCnfg Alt], and 367 [Fdbk
LsCnfgPosit]

Rockwell powerflex 700s Specifications

General

Brand	Rockwell
Model	powerflex 700s
Category	Controller
Language	English