Vacuum Valve Interlock Test Procedure:
XTA XT01
Revised 09 July 2011
Test procedure:
1. Verify that gauge wiring and PLC programming are failsafe
All gauge inputs OK
a. Make up all gauge inputs to VVC: XT01:1 and reset
All gauge inputs Fault
interlocks. Verify gauge OK status on VVC front
after removing IB32
panel.
module from slot 3
b. Remove the IB32 digital input module from slot 3 of
All gauge inputs OK
CHAS: XT01:VA01 and verify that all gauge inputs
All gauge inputs Fault
are faulted and cannot be reset.
after unplugging cable
from slot 3
c. Insert the module and reset interlocks.
d. Unplug the PLC cable from the front of slot 3 of CHAS: XT0:VA01 and verify that
all gauge inputs are faulted and cannot be reset.
2. Name of tester and date of test
___________________________________
Name
Document1
Page 1 of 2
__________________
Date
3. Valve logic test for VVPG:XT01:115
a. If possible, turn off all cold cathode gauges except
for those interlocked to valve VVPG:XT01:115
All gauges off
b. Make up all inputs to valve VVPG: XT01:115
either by turning on gauges and making up PPS
inputs, or by bypassing the individual inputs.
All inputs OK
Intlk sum OK
c. Test each input, one at a time, with all other inputs either bypassed or OK. For each
input, complete the appropriate line on the following table:
Valve VVPG:XT01:115 – Valve Controller VVC:XT01:11, valve #1
Input (VVC input #)
Bypass Clear,
Gauge/PPS fault,
Intlk sum Fault
and will not reset
Bypass Clear,
Gauge/PPS OK,
Intlk sum OK
after intlk reset
Bypass Clear,
Gauge/PPS fault,
Intlk sum Fault
and will not reset
Bypass Set,
Gauge/PPS fault,
Intlk sum OK
VVC
VVC
VVC
EPICS
VVC
d. Verify that the valve can be opened
and closed from VVC front panel and
from EPICS. Set the valve control
mode key switch to the appropriate
position for each test.
Intlk sum OK,
Valve can be opened
Intlk sum Fault,
Valve cannot be opened
VVC
EPICS
VVC
EPICS
e. Verify that valve position indicators
and air pressure switch report correct
status
Closed switch
VVC
EPICS
VVC
EPICS
VVC
EPICS
EPICS
EPICS
VGCC:XT01:112 (0)
VGCC:XT01:W255 (1)
VPIO:XT01:W230 (4)
VPIO:XT01:112(5)
VPIO:XT01:113 (6)
VPIO:XT01:124 (7)
Open switch
Air OK indicator
4. Name of tester and date of test
___________________________________
Name
Document1
Page 2 of 2
__________________
Date
EPICS