
Operations Overview |
1. Operations Overview
The purpose of this chapter is to provide an overview of the Cv2 capabilities. Chapter topics are organized in the same order that you would follow in setting up the system. Read this chapter carefully before proceeding with the installation and programming of the Cv2. For more details on configuring the operation through the programming software, refer to Chapter 3, Configuration.
1.1 Cv2 Capabilities
When an alarm occurs, the Cv2 places a call using its
The Cv2 has eight hardware inputs that can be programmed to accept either digital or analog signals and eight hardware outputs. Inputs can be independently configured to operate in these modes:
digital | monitoring contact closures or voltage levels |
watchdog | monitoring for the absence of a periodic event |
totalizer | counting events |
interval | measuring the time duration of events |
analog | measuring 0 to 5 volt signals |
Outputs can be set to operate as either on/off controls or as timed controls.
1.2 What constitutes an alarm?
Alarm conditions can be defined for digital, watchdog and analog inputs. Totalizers and interval inputs are used for measurement purposes and do not generate alarms. The signal at the input is conditioned by a debounce timer that ensures the level is valid before accepting it.
A digital input has normal and alarm states that can be defined as either when the input is high or low. After the input signal has been qualified by the debounce timer, it can be registered as an alarm when the input is active, or it can be latched to detect a pulsed condition. The voice message for a digital input is programmed to announce the alarm condition that it is monitoring, e.g. “Intrusion Alarm”.
Watchdog inputs use a timer that is restarted by changes at the input. If this timer expires because it has not been restarted within the programmed interval, an alarm will register. Like the digital input, the watchdog can be set as either an
B1272M001 | BARNETT ENGINEERING LTD. | ProTalk Cv2 |