Edwards XDS46i

5.7 Shut down
WARNING:
When the pump has been switched o the fan will connue to run for 1 minute.
Use the procedure below to shut down the pump:
1.
If shung the pump down prior to a period of storage, remove any process gases
by running on high ow gas ballast for at least one hour.
2.
Close any vacuum system isolaon valve to prevent suck‑back into the vacuum
system (where ed).
3.
Switch o the pump. (When the pump is switched o the fan will connue to run
for 1 minute).
4.
Vent the pump by the gas ballast control (if ed) or valve on the inlet.
Figure 4 Logic interface schemac
1. Speed control pins 3, 4 and 5
Maximum current per pin = 7 mA when
linked to pin 1 (24 V)
2. Pump healthy signal
Signal high = normal (maximum
permissible current = 100 mA)
1. Speed control pins 3, 4 and 5
Maximum current per pin = 7 mA when
linked to pin 1 (24 V)
2. Pump healthy signal
Signal high = normal (maximum
permissible current = 100 mA)
Table 8
Pin status on the logic interface connector
Mode
Speed
percentage
Pin 1 Pin 3 Pin 4 Pin 5
Normal 100% 24 V Link open open
Boost 116% 24 V Link Link Link
Idle 67% 24 V Link Link open
The tolerance of the power supply can be ± 10%. Make sure all the unused pins are not
connected.
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