MKS 651D Series, User Manual, Page: 55 / 162

Chapter Four: Local Operation Setup
43
Setup
How to Select and Calibrate the Valve
The 651 controller works with the 253 or 653 valve. Choose the appropriate valve and connect
it to the 651 unit (refer to the valve manual if necessary).
Caution
The procedure for calibrating (learning) the valve involves cycling
the valve from the open to the close position. Be certain that the
system can withstand valve cycling
before proceeding.
This test can be performed prior to installing the valve in your
system.
To select and calibrate the valve:
1. Be sure that the valve is connected to the 651 unit and the Key Lock switch on the front
panel is set to Local .
2. Press the [ ] and the valve [C
LOSE
] keys simultaneously for about three seconds.
The screen displays:
VALVE TYPE:
253 STD
Select the valve type from the options of 253 STD (initial), 253 FAST, and 653.
Note
Be sure to select the correct valve; otherwise the 651 pressure controller
will not function correctly.
3. Press the [S
TOP
] key to select and calibrate the valve.
The valve opens and closes as it is being calibrated, then stops at completion. The screen returns
to the default
Pressure and Position display screen.
How To Set the Operating Parameters
Your 651 controller is shipped with the initial configuration settings shown in Appendix C
Initial Settings, Table 20.
Note
The initial configuration is not a default configuration, since the 651
controller stores most of its configuration settings in non-volatile RAM.