Controller Operation - Black Box CRCW-12 User Manual

Chapter 4: E2 Controller
summary alarm is signaled and a designated set of N.O. & N.C. Custom Alarm relay contacts may be energized to provide remote
indication of the specific alarm condition(s).
For example, you may want to be notified when a change filter alarm is annunciated, notifying that the air filters need to be
cleaned or replaced. That way, you are alerted before the filters are so badly clogged that airflow is reduced to a point where a
"Loss of airflow" alarm is activated.
The controller may be factory-configured to activate up to three custom alarms. One custom alarm with relay contacts is provided
as a standard and up to two additional custom alarms may be provided as an option.

4.4 Controller Operation

The E2 Series controller is designed to control an air-conditioning system in a space or process application to temperature and
humidity levels as defined by the user. Conditioned air is supplied to the space as needed to maintain the temperature/humidity
control setpoints.
The controller I/O module includes inputs and outputs as depicted in Figure 4-18. Not all the inputs and outputs shown below are
used; therefore, only the inputs/outputs needed for the specific A/C system type and application are enabled.
Figure 4-18. Control inputs and outputs.
724-746-5500 | blackbox.com
Page 45