II K 6-20
Operating Instructions
6.3 Useful hints for commissioning
1. Select EMF and confirm,
even if Analog Tacho or
Encoder is in use.
2. Caution!
Start the Drive and Stop
the Drive using (I) button
as soon as the motor will
turn.
3. Drive can be started and
stopped alternately us-
ing (I) button.
4. After successful check of
rotation press MENU but-
ton to go back to previous
commissioning step.
5. Select Previous.
6. Select Analog Tacho or
Encoder as requested
and continue.
Start Drive
Press (I)
Mot Turns Clockwise
No
Exit Wizard
Previous
5.02 Speed Meas Mode
Analog Tacho
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F12 - Field Undercurrent
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F09 - Mains Undervoltage
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A02 - Mains Voltage Low
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Drive doesn’t start
DCS400 is suitable for main supply of 230…500V
without any parameter settings. To monitor the main
supply the software is working in a new way. The
smallest allowable mains voltage is calculated by
means of parameter Armature Voltage Nominal
(1.02). If mains voltage actual is lower than calcu-
lated voltage or parameter armature voltage is too
high related to nominal mains voltage the drive
doesn’t start. Neither drive ON nor the autotunings
are working. The smallest allowable mains voltage is
calculated by formula
Umains >= Uarm / (1,35 x cos alpha)
4-Q: Umains >= Uarm / (1,35 x 0,866)
2-Q: Umains >= Uarm / (1,35 x 0,966)
Remedy
Set parameter Arm Volt Nom (1.02) in accordance to
DCS400 Manual and / or set parameter Net Underv
Trip (1.10) to a
lower (!) value. Parameter Net
Underv Trip (1.10) is not related to nominal mains
voltage! This parameter defines an additional safety
margin over the (calculated) minimum allowable
mains voltage. Higher (pos.) values makes the
monitoring more sensitive, lower (also neg.) values
increase the tolerance of monitoring.
Refer also manual chapter:
2.2 table 2.2/4, Recommended DC voltage …
4.5.1 Monitoring the Mains Voltage
6.4 Troubleshooting (Faults, Alarms, Diagnostics)
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Drive not ready for operation
• After A09-Emergency Stop: Green LED at the
operating panel DCS400PAN is keeping off even
if ON and RUN command is switching off and on
again. Zero Speed Lev (5.15) = 0rpm , respective-
ly too low. Has to be greater than 0rpm.
• During normal operation: Green and red LED‘s
at the operating panel DCS400PAN are showing
the actual state of the drive. For more information
please refer chapter
6.4.4 Significance of panel
LED’s
. After ON command the mains supply and
frequency and field current will be checked.
Within 10 sec this check must be successful and
the drive logic has to be ready for operation.
Otherwise a fault will occur.
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Wait For Standstill diagnosis message
This diagnosis message can occur during Commis-
sioning Wizard at any autotuning function (Field,
Armature, Speed and Flux) and Speed Measurement
Adjustment (EMF , Analog Tacho and Encoder) if
Zero Speed Lev (5.15) = 0 , respectively too low.
Has to be greater than 0rpm.
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Field Autotuning failed
Check parameter Diagnosis (7.03) and read chapter
6.4.7 Diagnostic Messages
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Armature Autotuning failed
Check parameter Diagnosis (7.03) and read chapter
6.4.7 Diagnostic Messages
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Speed Meas Adjust commissioning step
During commissioning step Speed Meas Adjust? -
Yes the motor will turn after first confirmation Start
Drive - Press (I) in EMF mode with 12,5% of Base
Speed (1.05) or in Analog Tacho or Encoder mode
with 25% of Base Speed (1.05).
If this speed is too high for a first check of application
don’t use this commissioning step!
Exit the Commissioning Wizard now and do this
first check via LOCal control using the operating
panel DCS400PAN . Please refer chapter
6.1 Panel
mode: Drive control
. Afterwards start the Commis-
sioning Wizard again.
Another possibility is do this first check of direction of
rotation in EMF mode keep up the Commissioning
Wizard and using (I) button of operating panel
DCS400PAN carefully:
5.02 Speed Meas Mode
EMF
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