Starting Configuration - Danfoss AK2-SC 255 Reference Manual

Starting Configuration

Plan strategy first
Miscellaneous
relay outputs
RS.8D.M1.22
sensor input not available through refrigeration, HVAC, or lighting configuration, you
will need to configure one or more miscellaneous points.
You might use a miscellaneous relay output point for an exhaust fan, a dispenser that
adds chemicals to an evaporative condenser, an oven, a produce fogger, or any other
device that can't or shouldn't be treated like an ordinary refrigeration, HVAC, or
lighting point.
Miscellaneous on/off inputs and sensor inputs can be used in defining the strategy for
miscellaneous relay outputs. They may be monitored for history, and may be config-
ured strictly for that purpose, or for alarms. Alarms can be created for any miscella-
neous point. For sensor inputs, the AK2 system allows custom conversion for non-
Danfoss sensors that have a linear response.
The way you begin configuration of a miscellaneous point depends on whether there
are any miscellaneous points already configured.
First, select Miscellaneous from the Main Menu. Select Configuration, and the
Configure Miscellaneous Menu appears.
The calculated points feature of SC 255 versions 1.00 and higher, first on the menu
above, is a rich and very powerful set of tools. We will discuss it later in this section.
The menu items will not be taken up in the order that they appear on the menu.
Before beginning configuration, plan your strategy. What types of points will you
need to define? How many? If you need to develop a control strategy involving
several inputs, outputs, and schedules, you may wish to look at the examples at the
end of this section first, because it shows how on/off inputs, sensor inputs, schedules,
and even other relay outputs, are used to create a custom control strategy for a relay
output.
You can configure up to 48 miscellaneous relay outputs per SC 255. To configure a
miscellaneous relay output, select Relay Outputs from the Configure Miscellaneous
menu. When the Configure Misc. Relay Outputs screen appears increase the number
AK2-SC 255 Reference Manual 141