Shut Down; Figure 5 Logic Interface Schematic - Edwards XDS35iC Instruction Manual

5.7 Shut down

WARNING:
When the pump has been switched off the fan will continue to run for 1 minute.
Use the procedure below to shut down the pump:
1. If shutting the pump down prior to a period of storage, remove any process gases
by running on high flow gas ballast for at least one hour.
2. Close any vacuum system isolation valve to prevent suck‑back into the vacuum
system (where fitted).
3. Switch off the pump. (When the pump is switched off the fan will continue to run
for 1 minute).
4. Vent the pump by the gas ballast control (if fitted) or valve on the inlet.

Figure 5 Logic interface schematic

1. Speed control pins 3, 4 and 5 1. Speed control pins 3, 4 and 5
Maximum current per pin = 7 mA when Maximum current per pin = 7 mA when
linked to pin 1 (24 V) linked to pin 1 (24 V)
Table 9 Pin status on the logic interface connector
Mode
Normal
Boost
Idle
The tolerance of the power supply can be ± 10%. Make sure all the unused pins are not
connected.
A73001880_N
A73001880_N - Operation
Pumping speed
Speed per-
3
centage
(m h
100% 35
116% 41
67% 23
Page 26
2. Pump healthy signal 2. Pump healthy signal
Signal high = normal (maximum Signal high = normal (maximum
permissible current = 100 mA) permissible current = 100 mA)
Pin 1
-1
)
24 V
24 V
24 V
Pin 3 Pin 4
Link open
Link Link
Link Link
11/2020 - ©Edwards Limited
Pin 5
open
Link
open