291
Fault tracing
3ADW000379R0501 DCS550 Manual e e
display
Control Panel
word
active when
analog tacho: tacho itself, tacho polarity and voltage,
alignment, cabling, coupling, mechanical distu
jumper S1 on SDCS-CON-F
EMF: connection converter - armature circuit closed
External fan acknowledge missing:
Check:
MotFanAck (10.06)
external fan contactor
external fan circuit
external fan supply voltage
− used digital inputs and outputs (group 14)
Main contactor acknowledge missing:
Check:
MainContAck (10.21)
MainContCtrlMode (21.16)
switch on - off sequence
auxiliary contactor (relay) switching the main contactor
after On/Off command
safety relays
− used digital inputs and outputs (group 14)
Type code mismatch:
Check:
External fault via binary input:
There is no problem with the drive itself!
Check:
Fieldbus communication loss:
F528
FieldBusCom is only activated after the first data
set from the overriding control is received by the drive.
Before the first data
set is received, only A128
is active. The reason is to suppress
unnecessary faults (the start up of the overriding control is
usually slower than the one of the drive).
Check:
CommandSel (10.01), ComLossCtrl (30.28), FB
TimeOut (30.35), CommModule (98.02)
parameter settings of group 51 (fieldbus)
fieldbus cable
fieldbus termination
always if FB
TimeOut
(30.35)
≠ 0
motor torque exceeded StallTorq (30.03) for a time
StallTime (30.01) while the speed feedback
StallSpeed (30.02). Check:
motor stalled (mechanical couplings of the motor)
proper conditions of load
correct field current
parameter settings of group 20 (limits: current and
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