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7.0 Troubleshooting
This section outlines basic procedures to follow if the component or instruments do not function properly.
Contact SuperFlow Technical Support if you have any questions about the safe operation of the equipment
or for service and advice.
• Post safety warnings and barricade work
area to prevent unauthorized use of the
dynamometer before maintenance has been
completed.
•
Only qualified machine operators and
maintenance personnel should perform the
procedures covered in this manual.
!
WARNING
7.1 Servo Valve
The following procedure can be used to diagnose whether the servo valves can be controlled by the control
system. These tests function without any closed loop feedback from the electronics. Thus, PID control
parameters are not in play.
Manual test mode:
1. Load the
Diag_Pmk.tgp
test group into your system. If you do not have this test group, contact
SuperFlow Customer Service for a copy.
a.
This contains a config file (.cfa) that changes the inlet valve control mode to always copy the outlet
valve.
b. Thus, it will allow you to control both inlet and outlet control valves in manual mode control without
the engine running. Normally, the inlet valve will not move until engine RPM exceeds 500.
c. If you don’t have the
Diag_Pmk.tgp
, but you have the WinDyn Config editor enabled on your
system, you may edit the
SetIn
channel (103) as follows to enable the inlet valve to copy the outlet
valve:
return(system(1,1,0,0)/40.96);
d.
If you do edit your config file, don’t forget to return the channel to the original setting when you are
finished diagnosing your servo valves. Write down that setting before you edit the file in step C
above.
2. Observe WinDyn screen objects showing the servo in and servo out percentage (objects are typically
on screen 2 or 6; if not add the objects by editing your screen)
Figure 7.1 Servo IN and OUT Percentage
AUTOMATIC STARTING HAZARD.
The dynamometer could be started
remotely. Ensure starting has been
disabled prior to servicing.
!
WARNING
