Endress+Hauser TopClean S CPC 30, Руководство по эксплуатации

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6 Commissioning TopClean S CPC 30
50 EHauser
Requirements for controller configuration:
You have carried out the following settings which are necessary for the controller
settings either in the quick setup, page 30 or on the appropriate menu page.
If you have not yet made the settings, please do this before configuring the controller.
•
Specify the relays available for the controllers
(Field T18, page 32, or Field F1, page 38) and/or
•
Current output 2 must be defined as a continuous controller if you want to control the
actuator via a 20 mA interface.
(Field T20, page 33, or Field EA1, page 36).
!
Note!
• Danger of data loss.
If you assign the relays which are used by the controller with
another function (Field F1, page 38), the complete controller configuration is reset to
the default values.
•
If you change the relay assignment for the controllers in the Contacts menu (Field F1,
page 38), you must use the Controller menu to reassign a relay to all the functions
selected there.
Example: Relays 4 and 5 are assigned to the controller and you change the controller
assignment to relays 2 and 3 (number of relays remains 2)
(
no
data loss, provided the number of assigned relays is not reduced!)
•
Relays 3, 4 and 5 are located on the additional plug-in card. If you have used one of
these relays for the controller function and want/have to remove this card from the
device, then we would recommend that you change the controller configuration
before removing the second card, so that all the relays used by the controller are
located on card 1. Otherwise, you cannot use the controller function during the time
in which the additional card is not plugged into the device, as the controller wants to
access the relays on the second card.
Definition of terms
Actuators: Valves, gate valves, pumps and similar
Acid/alkali: The terms "acid" and "alkali" used in the menu are used here relating to the direction of
action.
Acid
= Dosing medium, which lowers the pH value.
Alkali
= Dosing medium, which raises the pH value.
Example: A fluid (pH value 14) needs to be brought up to the set point of pH 12 with an
alkali (pH value 9). In the "Dosing" menu, choose "Acid" as the addition of this dosing
medium, will lower the pH value of the fluid.
Process: The controller or the process (to simplify matters this will, from henceforth, be referred
to as the "process") can be differentiated on account of their different features:
Direction of action, one
or two-sided:
One-sided
control only works in one of two directions. This concerns, for example, a
neutralisation process in which a dosing medium is used (acid
or
alkali). With a
two-
sided
process, control can generally work in two-directions (use of acid
and
alkali). This
means that you can both increase and decrease the value of the control variable (here
= pH value). To implement this, the set point of your process must lay between the pH
values of the two dosing media.
PARAM
⇒
Set up 2
⇒
Controller settings