2D - ON/OFF Mode - Description and configuration
The article outlines the functioning of the ON/OFF Control mode in the iSMA-B-2D controller. To start it, set the sixth CFG DIP switch to on and the eighth to off. If the ON/OFF Control mode is switched on, the DALI Control and LLC modes are switched off.
1. ON/OFF Control Mode Description
The ON/OFF Control mode allows to control two lighting zones using dedicated Modbus registers and switches connected to digital inputs. Lighting zones can be controlled independently or simultaneously using the same input signals. The algorithm controls lamps connected to the light outputs basing on the registers' values or switches statuses; the DALI buses are switched off.
2. Inputs in the ON/OFF Control Mode
The article does not cover the connections of inputs and outputs, which are described in the 2D - Inputs/Outputs - Connecting input and output signals article.
2.1 Special Inputs
Presence/motions sensors (PIR) have to be connected to “Sensors” special inputs. Using the Modbus protocol or the iSMA Configurator software, the user has access to 7 configuration parameters of sensors:
SI1_PIR_TYPE and SI2_PIR_TYPE - sets to the type of connected sensors, “5” meaning the NO type (normally open), “6” meaning the NC type (normally closed);
SI_1_DELAY_OFF_TIME and SI_2_DELAY_OFF_TIME - sets the time from the last detected motion in the room, after which the lights are switched off;
SI1_BLOCKING and SI2_BLOCKING - allows to switch off PIR sensors and their influence on the lamps.
The iSMA-B-2D controller allows for controlling both lighting zones with one PIR sensor; this function is switched on with a particular configuration of the CFG DIP switch. The CFG DIP switch configuration is described in the 2D - DIP Switch - Description of DIP switch functions article.
2.2 Digital Inputs
Switches controlling both DALI zones have to be connected to I1 and I2 inputs, which allow to switch on/off the ballasts. I3 and I4 inputs are not used in the ON/OFF Control mode.
The user can connect monostable and bistable switches, and select their type with a first CFG DIP switch.
3. The ON/OFF Control Mode Functioning
3.1. Lighting Zones in the ON/OFF Control Mode
The ON/OFF Control mode can control two independent lighting zones with two switches dedicated for each zone, connected to I1 and I2 inputs, and PIR sensors connected t S1 and S2 inputs. The iSMA-B-2D controller also allows for switching the ON/OFF Control mode for each zone separately or for switching it on for two zones with one set of sensors/switches. Also, the user can connect two PIR sensors and only one switch, or otherwise.
3.2 Switches Impact on the Functioning of the iSMA-B-2D Controller Working in the ON/OFF Control Mode
Short press makes the relevant digital input (or both of them) change its state. In practice, the algorithm causes the short press to switch the light on/off.
3.3 Presence/Motions Sensors Impact on the Functioning of the iSMA-B-2D Controller Working in the ON/OFF Control Mode
The S1 and S2 inputs of the iSMA-B-2D controller allow for connecting presence/motion sensors of normally open (NO) or normally closed (NC) types. Sensors configuration is carried out in the SI1_PIR_TYPE and SI2_PIR_TYPE registers or using the iSMA Configurator software.
The iSMA-B-2D controller’s algorithm, in case of not detecting anyone’s presence in the room, in the time set in the SI_X_DELAY_OFF_TIME registers, switches off lights disconnecting a relevant digital input. The SI1_BLOCKING and SI2_BLOCKING allows for switching off functioning of the PIR sensors and their impact on the lamps.