Test The Pid Control; Auto Tune The Pid; Manually Tuning The Pid; Turning Pid On And Off When On-Process - Edwards GXS Series Instruction Manual

Dry screw vacuum pump
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9.11.6 Test the PID control

1.
If the booster is under manual control, ensure that it is switched on and running.
2.
Turn the Green mode off from the Command menu.
3.
PID should now start automatically. If it does not start to control the inlet pressure
use the PDT and go to: Setup/Command/PID/On.

9.11.7 Auto tune the PID

The PID auto tune should not be used.

9.11.8 Manually tuning the PID

Use the following default PID parameters:
Tc = 1
Kc = 0.01 (increasing the value results in a faster time to target pressure. 0.02 is generally
the largest value required)
Ti = 50 (decreasing the value results in a faster time to target pressure. 20 is generally
the smallest value required)
Td = 0.0001
Do not change Tc or Td
PID parameters are accessed using the PDT ‑ go to Setup/Set sequences/PID/PID
parameters.

9.11.9 Turning PID on and off when on-process

The MCM MicroTIM or the PDT can be used to turn the PID on and off when the pump is
on‑process by configuring the PID to manual operating mode. This can be useful when a
pump down to base pressure is required before pressure control is initiated.
1.
From the PID menu, select Operating mode...
2.
From the Operating mode menu, select Manual.
Refer to the MCM MicroTIM manual and
PDT
on page 156 for the information about using the MCM MicroTIM to enable PID.

9.12 How to set up the Ethernet port

The pump has a single 10 baseT Ethernet port that can be configured in either static
address mode or DHCP mode. There are a variety of protocols that can be run over the
Ethernet port including FabWorks EtherNim, SIM and E54 Modbus.
The SIM protocol is the only protocol available for users. The manual for the SIM
protocol is P41100200. If the Ethernet port is to be used with different protocols then
contact us.
Before the Ethernet connection is used, it requires a valid IP address. Set the IP address
using the PDT. Both static IP addressing and DHCP dynamic addressing are supported by
the pumps.
M58800880_H - Pump display terminal
Page 151
How to set up the MCM MicroTIM using the

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