Edwards EXC 100E, Инструкция по эксплуатации

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D396-20-880 Issue H
Page 24 © Edwards Limited 2015. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Operation
4.5 Normal shutdown
Use the following procedure to shut down your system. This procedure assumes that you will manually operate the
vent-valve and the backing pump, however you can configure the Controller to automatically operate the vent-valve
(refer to
Section 3.2.4 ). Refer to the Instruction Manual for the EXT pump for details of the maximum allowable vent
rate.
1. Select Stop: open the Start/Stop input on the logic interface connector (see Section 1.4.3 ).
2. Open the vent-valve before the EXT pump speed is below 50% of full rotational speed.
3. Switch off the backing pump.
4.6 Automatic shutdown after Fail condition
The Controller will automatically switch off the electrical supply to the EXT pump if the Controller trips into Fail
condition (see
Section 1.6 ).
The operation of the vent-valve in all Fail conditions depends on how you have configured the Controller: refer to
sections
1.6 and 3.2 .
4.7 Reset the Controller after Fail condition
To reset a Fail condition, open the Start/Stop input on the logic interface for at least 300 ms and then close the input.
4.8 Electrical supply failure
If the electrical supply to the Controller fails when the EXT pump is rotating:

The motor of the EXT pump is used as a generator and the electrical supplies for the vent-valve, air-cooler
and AIM gauge (if connected) and the associated control logic are maintained until the pump speed falls to
50% of full rotational speed, then the electrical supplies are switched off.

The Controller will then shut down.
WARNING
If the Start/Stop control signal on the logic interface connector is set to Start, the Controller will
automatically restart the EXT pump when the electrical supply is restored after an electrical
supply failure. Ensure that people cannot be injured by the rotating rotor blades of the EXT pump.