Advanced Energy VarioMatch Match Network VM 1000 Platform User Manual page 79

By changing the tap position on this coil, you can adjust the match range for the size
of the load. The more coils that are active between the tap and the load capacitor, the
higher the resulting capacitance. The ideal position of the tap on the load coil depends
on the real part of the load impedance. For
more capacitance of load capacitor, which requires more active coils.
The number of turns on the load coil depends on your unit. For
contains a load coil with 3 tapped positions:
• Use the position closest to the load capacitor for small loads.
• Use the center position for medium size loads.
• Use the position furthest from the load capacitor for large loads.
For specific recommendations, contact Global Services.
To Change the Tap Settings on the Load Coil:
1. Tum off RF from the generator.
2. Disconnect AC
3. Disconnect RF in (from the
4. Disconnect RF
5. Remove the top cover, being careful to not damage the plug leading to the fan:
a. Remove the large top cover (with the fan) from the V arioMatch match network
by unscrewing the twelve screws on the cover. Leave the small top and side
covers in place.
b. Disconnect the plug leading from top lid to the fan.
6. Using a flathead screwdriver, unscrew the bolt from the current tap setting.
7. Move the lugged tap wire to the desired coil and screw the bolt into the tab (for
examples, see
57020080-00D
MAINS.
(PLASMA/LOAD).
AE VarioMatch Match Network, VM 1000/1500 Platform
TM
example,
RF-GENERATOR).
out
Figure 5-12, Figure 5-13, Figure
Installation, Setup, and Operation
lower load impedance requires
example, if you unit
5-14).
5-23