Series 65 
TROUBLE SHOOTING 
 
963283EA  Edition 2019-05-03  103/
 
•  Achsen vertauscht 
•  Encoder nicht angeschlossen 
  1
5
Motion controller: Target position can’t be 
reached 
•  1) 
•  Current settings 
  1
6
Motion  controller:  Position  minimal 
conductance cannot be reached 
•  1) 
•  Check Plate and Seal ring 
•  Check  Parameter  “Isolation  Position  Enter 
  1
7
Motion  controller:  Position  to  push  back 
the Differential Plate cannot be reached 
•  1) 
•  Check Different Plate 
•  Check  Parameter  “Differential  Plate  Push 
Back Position [r]” 
  1
8
Motion  controller:  Minimal  isolation 
position cannot be reached 
•  1) 
•  Check Plate and Seal ring 
Check Parameter “Isolation Position [r]”
  2
0
Break slippery detected  Replace actuator 
  3
0
SFV:  Motion  controller  failure  in  master-
Contact vat support 
  4
0
Compressed air error  Check compressed air 
  4
2
Power supply, low voltage detected  Check if  power supply is  ok and  is able to deliver 
needed power 
  9
6
SFV:  Position  deviation  axis1 to  axis2  at 
homing procedure 
•  O-Ring sticking 
•  1) 
  9
7
SFV:  Position  deviation  axis1 to  axis2  at 
operating 
1) 
Position error at operating
2
0
0
Valve configuration  error,  not  possible to 
operate the valve with these configuration
Contact VAT support 
7
7
7
Do not operating mode active   
 
 
1) Mechanical movement problem: 
•  Check for differential pressure 
•  Remove foreign object in movement area 
•  Eliminate tight movement 
•  Repair mechanical failure 
 
 
 
 
If you need any further information, please contact one of our service centers. You will find the 
addresses on our website: www.vatvalve.com.