def clear_status_rec(prefix: str):
"""
- clear all status PVs for 'recovering from pressurized system' process (5*10^-2 ~ 1*10^-8)
- clear all status PVs for 'Off Process'
"""
process_on = ProcessOn(prefix=prefix)
process_off = ProcessOff(prefix=prefix)
process_on.activate_all_status()
process_off.clear_all_fv_status()
class Initialization:
def __init__(self, prefix: str):
if not prefix:
raise ValueError(f"parameter prefix cannot be empty {prefix}")
self.prefix = prefix
self._tick = 0.5
# Create TURBOVAC PVs
self.turbovac = Turbovac(prefix=prefix)
# Create beaglebone PVs
self.bbb = BBB(prefix=prefix)
# Create ACP PVs
self.acp = ACP(prefix=prefix)
# Create process recovery status PVs
self.process_recovery = ProcessRecovery(prefix=prefix)
# Create process ON status PVs
self.process_on = ProcessOn(prefix=prefix)
def run(self):
"""if pressure is between 0.05 and 1*10**-8, trigger "process_recovery" script"""
if (self.bbb.pressure_pv.value < 0.05) & (
self.bbb.pressure_pv.value > 10**-8
):
self._stage_1()
self._stage_2()
self._stage_3()
self._stage_4()
self._stage_5()
def _stage_1(self):
_logger.info("stage1")
self.process_recovery.status1_pv.value = 1
# turn ACP15 pump ON and wait 30 s
self.acp.on_off_pv.value = 1
# set ACP15 speed to maximum (6000 rpm)
self.acp.speed_rpm.value = 6000
# wait until pump receives command to turn on
while self.acp.on_off_pv.value == 0:
time.sleep(self._tick)
time.sleep(30)
def _stage_2(self):
_logger.info("stage2")
# open pre-vacuum valve
self.bbb.pre_vacuum_valve_sw_pv.value = 1
# wait gate valve receives command to open
while self.bbb.pre_vacuum_valve_sw_pv.value == 0:
time.sleep(self._tick)
# update status
self.process_recovery.status2_pv.value = 1
def _stage_3(self):
_logger.info("stage3")
# turn TURBOVAC pump ON
self.turbovac.pzd1_sp_tevl_pv.value = 1
self.turbovac.pzd1_sp_zrvl_pv.value = 1
# wait until pump receives command to turn on
while (self.turbovac.pzd1_sp_zrvl_pv.value == 0) & (
self.turbovac.pzd1_sp_tevl_pv.value == 0
):
time.sleep(self._tick)
self.process_recovery.status3_pv.value = 1
def _stage_4(self):
_logger.info(f"stage4, wait until {self.turbovac.pzd2_rb_pv}<1200")
# wait TURBOVAC pump reaches 1200 Hz
self.turbovac.pzd2_sp_pv.value = 1200
self.turbovac.pzd1_sp_sxvl_pv.value = 1
while self.turbovac.pzd2_rb_pv.value < 1200:
time.sleep(self._tick)
self.turbovac.pzd1_sp_sxvl_pv.value = 0
self.process_recovery.status4_pv.value = 1
def _stage_5(self):
_logger.info("stage5")
# open gate valve (VAT)
self.bbb.gate_valve_sw_pv.value = 1
# read gate valve (VAT) status to check if it is really open
loop = True
while loop:
Lo = self.bbb.valve_open_pv.value
Lg = self.bbb.valve_closed_pv.value
if Lo & (not Lg):
loop = False
time.sleep(self._tick)
self.process_recovery.status5_pv.value = 1
self.process_on.activate_all_status()