Control Inputs
This article describes the control inputs on Exigo in general.
- Control Inputs are available on:
- System Controller
- Amplifiers
- Access Panels (Not EX panels)
- 6 inputs on each device
- Inputs are used e.g. for triggering:
- General Alarm
- Fire Alarm
- Live Speech from external microphone
Contents
Control Inputs - Connections
Connections on rack devises
Connections on access panels
Configuration
Configuration of Control Inputs are done in EMT:
- In Components view open Input Actions
- In System, identify the device and expand to Control Inputs
- Drag the desired Input Action to the on_action or the off_action
- Set relevant parameters in the dialog box that appears
Control Inputs - Monitoring
- Conventional inputs have two states:
- Contact is Open, or
- Contact is Closed
This makes the control input vulnerable - cable break is not detected.
On System Controller and Amplifiers it is possible to monitor the control inputs. Access panels do not support monitoring.
This is done by connecting two resistors as close as possible to the external switch/relay, one in series and one in parallell.
The resistor connected in series with the external switch/relay shall have a value of 1 kΩ, while the resistor connected in parallel shall be 2.2 kΩ.
Monitored Inputs have four states:
- Contact is Open, or
- Contact is Closed
- Short circuit (error)
- Open circuit (error)
Monitoring of inputs must be enabled in EMT:
Parallel Wired Inputs
In an A-B system, it is required that signals from external systems such as fire detection are routed to both the A and B systems.
Connection with Dual-Pole Switch
If the external system has two physical outputs, a dual-pole switch connection must be made between Exigo and the external system as shown below:
Connection with Single-Pole Switch
If the external system has only one physical output, a single-pole switch connection must be made between Exigo and the external system as shown below:
As the Exigo system uses a small current to detect the status of the external switch/relay, two inputs should not be directly connected together without due precautions. To prevent currents from flowing the wrong way, and to ensure proper functioning of the control input, blocking diodes must be inserted in the loop as depicted in the figure above.
