Digital Input - Dantherm Rcc 130 Bedienungsanleitung

Digital input

MODBUS
30
The unit is equipped with 2 override inputs, also named digital inputs. These inputs can be
used to select a different fan speed or to activate alarms.
By default, the digital inputs are set as follows:
• Digital input 1: fan stage 2
• Digital input 2: fan stage 4
Functional principle (see example in figure):
• Switch DI1 between pins 2 and 4 will activate input 1
• Switch DI2 between pins 3 and 4 will activate input 2
The digital input can be used as follows:
• Fan stages from 0 – 4
• Safety shutdown
• Water level sensor
• Boost for kitchen hood
• Further options
DIGI IN
1 2 3 4
1: 12VDC
2: Digi. in 1
3: Digi. in 2
4: GND
DI2
DI1
Fig. 16: Digital input
Important information and settings in the PC Tool can be found in the "External Control"
menu item.
MODBUS RTU is used for internal communication between the unit (main PCB) and Dantherm
accessories (HAC, FPC or HCP11). Modbus RTU is connected via the RS485 port.
INFO
An external Building Management System (BMS) cannot be connected as Modbus RTU via the
RS485 connection or via Dantherm accessories (HAC, FPC, or HCP11).
Modbus TCP/IP: The Dantherm ventilation units are provided with the option to communicate
with Modbus TCP/IP via the Ethernet connection. This can be used for Building Management
Systems (BMS) or communication with smartphone apps.
INSTALLATION AND SERVICE MANUAL FOR PROFESSIONALS
Product description: Description of the components of the control unit