Linking to Home Automation Systems:
There are several hard-wired methods used to connect blind motors to Home Automation Systems (HAS) or Building Management Systems (BMS). The most common method is through an electronic controller (Somfy Moco Controller) or directly connecting to a HAS/BMS providing that the system has an Interlocking Feature and Individual Outputs for every motor. Interlocking means that when an up or down direction is activated the opposite direction cannot be physically switched or is disabled. The interlocking and Individual Outputs features are critical to this type of installation. If they cannot be achieved do not use this method of installation.
Available Options Include:
The CD4 ( Somfy Moco ) Controller – which is a single motor controller (relay) that requires its own 240 V power supply, with an output voltage of 240V A/C (latched). The switching consists of multiple Dry contact impulse switching (impulse contact closure of one second minimum). Contact closure between Common and Up or Down will activate the motor in the appropriate direction and a contact closure between all three contacts Common, Up and Down will create a Stop Command.
The CD4 can also be used to control a group of motors through a Group Motor Controller (3GMC or 4GMC). CD4’S may be connected together for multiple switching applications via Busline. This allows for an Individual control from a dedicated switch and for the control of all CD4’S from a master switch / controller.
Direct 240V Switching – should only ever be used in conjunction with Standard Switch motors. This method of connection is only used when the HAS/BMS is going to be the only source of control, has the ability to interlock between the up and down commands and provide Individual Outputs for every motor. These features are critical to this type of installation and if they cannot be achieved do not use this method of installation. Interlocking means that when an up or down direction is activated the opposite direction cannot be physically switched or is disabled. The HAS/BMS must switch 240V to the up or down directional wires to drive the motor and 0V to stop the motor. In a scenario with multiple motors each motor will require it’s own individual connection to the HAS/BMS.
IMPORTANT NOTE: If both up and down are activated at the same time this will cause damage to the motor (irreparable).
There is only one method of interfacing RTS configurations with HAS/BMS and that by using a Somfy RS-485 Transmitter. This Transmitter requires its own 240V power supply and has Dry contact impulse switching inputs that connect to the HAS/BMS (impulse contact closure of 5 to 10 seconds minimum). Once powered the Somfy RS-485 Transmitter can be programmed to internal or external RTS Receivers that control the motor. For individual control use one Transmitter per RTS Receiver and for group control use one Busline Transmitter per group.
IMPORTANT NOTE: If two or more Busline Transmitters are activated at the same time the sent command will not work (the radio signals cancel each other out)