The HA88B01KNX device is a DIN rail EIB / KNX actuator with 4 Triac outputs at 24… 230V AC for the control of thermoelectric valves and with 4 relays of 16A-230VAC; the devices also include 8 inputs for dry contacts (potential-free).
The 4 Triac outputs can be configured as:
• 4 channels for valve control in ON / OFF or PWM
• 2 channels for 3-points valve control
The 4 Relay outputs can be configured as:
• 4 outputs for light / load control
• 4 channels for valve in PWM (solenoid actuators)
• 2 channels for roller shutter / venetian control
• 2 channels for 3-point valve control
• Groups of 2,3,4 relays for special function using logic interlock.
The device is suitable for the management of 2/4 pipes fan coils up to 3 speeds; the outputs not used by the application can be used to control other equipments. Inputs can be connected to buttons or switches (potential-free) and can be used for on / off commands, dimming, shutters or blinds / scenarios, sequences, step commands, etc. Inputs from 1 to 4 can be configured as outputs to activate single signaling LEDs or can be configured as analogue inputs for the connection of NTC temperature probes with which to send 4 temperature measurements on the bus or to manage 4 complete thermostat modules.
Each thermostat module manages 2 stages with an integrated PI controller for controlling heating and cooling equipment, valves, 2 and 4 pipe fan coils, etc. Additional 3 thermostat modules are available in the device for a total of 4. Moreover, 7 logic blocks are available to implement simple expressions with logical or threshold operator or complex expressions with algebraic and conditional operators; It is possible to use predefined algorithms as proportional controls of temperature and humidity or dew point calculation.