Thermo Scientific Dionex, Руководство оператора

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3 • SP Sample Preparer Description
Doc. 065250-06 03/2020
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3.8.1 Relay Output Control
The relay outputs are normally open (NO). This means that the relay is
open when it is off (not energized) and closed when it is on (energized).
The relays can be programmed to switch any low-voltage device.
Switched current must be no more than 2 A at 24 Vdc. For connection
instructions, see
Section C.3 .
To control relay outputs, use any of the following methods.
•
To change the relay's state immediately (direct control), go to the SP
ePanel in Chromeleon 7.
•
To program the relay’s state change in an instrument method, add the
control commands in the Script Editor view in the Chromeleon 7
Instrument Method Editor.
Notes:
•
If a relay output is configured to change states with an alarm
event (see
Section 3.8.2 ), do not program the relay output to
control devices.
•
Always include a command that opens (turns off) the relay at the
beginning of the instrument method. Include the command in all
methods used with the system.
•
To configure the relay's state change as a function of an alarm
condition or a TTL input state change, see
“Configuring TTL Input
Responses (Actions) in Chromeleon 7 PA” on page 50 ).
3.8.2 TTL Input Control
The eight TTL inputs allow an external device to trigger one or more of
the following responses (actions):
•
Shut down the system
•
Put the system in standby
•
Bypass an injection from a specified sample stream
•
Turn on an SP panel light
•
Turn on an SP relay