Bimba SPCS - Manual (Page 13)

2014.01.23 rev4 13
3. Troubleshooting Chart
Symptom Probable Causes Corrective Action
System Totally Unresponsive Power not Applied Apply power, check all power wiring
Air Off Turn air on
Proportional Gain too Low Basic Settings – Increase Proportional
Gain
Inverted Sensor Polarity Initial Setup – Click the “Invert Feedback
Sensor Polarity” checkbox
Pneumatic Connections to Cylinder are
Backwards
Initial Setup – Click the “Transposed”
button under Port Connection
System Mildly Responsive or Sluggish Proportional Gain too Low Basic Settings – Increase Proportional
Gain
Force Damping Gain too High Basic Settings - Decrease Force Damping
Power Supply Voltage not Stable Check power wiring; change power supply
Cylinder too Small Decrease moving mass, increase cylinder
size, or increase inlet pressure.
System Freezes Fully Extended or
Retracted
No Feedback Signal Connect Feedback Signal
Feedback Connected Improperly Verify all wiring is as shown in application
examples and as described in the “System
Setup” section of this document
Cylinder Connected Improperly Verify airline connections
System Fails to Operate or is Inaccurate Incorrect Wiring Verify all wiring is as shown in the System
Setup section of this document
Mechanical System Insure mechanical system is free from
binding and high friction.
Proportional Gain too Low Basic Settings – Increase Proportional
Gain
Force Damping Gain too high Basic Settings - Decrease Force Damping
Offset Gain Adjusted incorrectly Basic Settings - Adjust Offset
Incorrect Cylidner Bore or Rod Diameter
Entered
Initial Setup - Check Cylidner Bore and
Rod Size
Air Leaks Insure there are no air leaks in the system
SPCS-2 Sticking Insure that inlet air meets valve specifi-
cations. See “System Setup” – Contact
Bimba
System Oscillates Force Damping too Low Basic Settings - Increase Force Damping
Proportional Gain too High Basic Settings - Decrease Proportional
Gain
System Overshoots Proportional Gain too High Basic Settings - Decrease Prportional Gain
System ‘Buzzes’ Input Signal Noise (possibly 60Hz) Verify that large or high power machinery
is not operating nearby. Also, verify input
signal integrity by examining the signal
with an oscilloscope.
Input Signals not connected Verify all wiring as shown in the “System
Setup” section of this document
DC Common not connected Verify all DC common connections