kitControl-SequenceBinary
This component provides sequenced weighted staging control of from two to 10 BooleanWritables based upon the status numeric
In value (0-100). An adjustable delay time is also provided. It can be used to support applications that need to sequence two
to 10 loads or stages in a binary sequence. Binary sequencing provides an analog to binary converter function that selects
the outputs whose total load rating relates directly to the control need. For each successive output, the output rating is
twice the previous output.
SequenceBinary is available in the HVAC folder of the kitControl palette. A similar object is the SequenceLinear, which uses a rotating method (vs. a weighted method) for sequencing.
For example, this table illustrates how, by controlling three loads, eight unique levels of control can be achieved.
| Control Signal (In)% | OutC (4 kw load size) | OutB (2 kw load size) | OutA (1 kw load size) | Stage Hysteresis |
| 100 | On | On | On | 14.3 |
| 87.5 | On | On | Off | 14.3 |
| 71.4 | On | Off | On | 14.3 |
| 57.1 | On | Off | Off | 14.3 |
| 42.9 | Off | On | On | 14.3 |
| 28.6 | Off | On | Off | 14.3 |
| 14.3 | Off | Off | On | 14.3 |
| 0 | Off | Off | Off | 14.3 |
Figure 60. SequenceBinary properties
| Property | Value | Description |
|---|---|---|
| Facets | Config Facets window | This configuration applies to the Out property values.
|
| In | number (defaults to 0.00) and null definition | Determines the number of stages that should currently be On.
When null is checked, the corresponding value defines the default when a calculation returns null. |
| In Minimum | single digit to two decimal places (defaults to 0.00) | Defines the In value that turns all outputs off.
|
| In Maximum | three-digit number to two decimal places (defaults to 100) | Defines the In value that turns all outputs on.
|
| Number Outputs | number between 2 and 10 inclusive (defaults to 3) | Defines the number of outputs or stages. |
| Out A-J | read-only StatusBoolean values: true or false |
Controls each of from two to 10 loads. The Number Outputs property defines how many are available.
|
| Delay | hours minutes seconds (defaults to no delay) | Defines the amount of time that must pass between changes in outputs. The default time is 0 seconds. |
| On Delay Active | read-only StatusBoolean values: true or false (default)
|
Indicates true when the on delay timer is active.
|
| Off Delay Active | read-only StatusBoolean values: true or false (default)
|
Indicates true when the off delay timer is active.
|
| Desired Stages On | read-only number | Indicates the calculated number of stages that should be on based on the In property.
|
| Current Stages On | read-only number | Indicates the number of stages that are currently on. Normally Current Stages On and Desired Stages On are the same. They differ when going through a transition with the delay timer active.
|
| Next Stage On | read-only number | Indicates the next stage to be turned on if needed. |
| Next Stage Off | read-only number | Indicates the next stage to be turned off if needed. |