Design Guide | iC7 Series Liquid-cooled System Modules
8 Control Unit
8.1 Modular Control Unit
The maximum input power of the internal 24 V DC power supply is 60 W.
NOTICE
EXTERNAL 24 V DC POWER SUPPLY NEEDED
The power units do not provide a 24 V DC power supply for the control unit. Lack of a 24 V DC power supply can prevent the
operation of the product.
l Provide an external 24 V DC +15%/-10% power supply for the control unit.
NOTICE
CABLE INSULATION
l Insulation between 2 circuits must be designed according to the circuit that has the highest voltage.
NOTICE
SEPARATE 24 V WIRES FROM 115/240 V CABLES
The 24 V wires must be separated from the 115 V/240 V cables. If they are not separated, all wirings must be made with shielded
115 V/240 V cables.
NOTICE
SIGNAL CABLES
l It is recommended to use shielded/twisted pair signal cables.
Table 20: Maximum Power Consumption of the Control Unit Components
Component Power consumption [W]
Control unit, including control panel 6
Star coupler board 4
I/O and Relay Option, 250 mA at 24 V
out
8
Any other option board, 1 pcs 4
The system modules are controlled with the modular control unit. The control unit and the system modules are connected via fiber
optics. When 2 or more parallel system modules are used, a star coupler board is needed. The modular control unit provides an interface
towards the upper control system. The control unit includes two Ethernet ports for a fieldbus connection. Daisy chaining the fieldbus is
supported for typical protocols, such as Modbus TCP and PROFINET RT. Additional functional extensions can be added to incorporate
analog and digital inputs and outputs as well as other functionality such as temperature measurement or voltage measurement. A
control panel is available for local control.
The modular control unit can be mounted nearby to or remotely from the power unit. The control unit consists of various boards
installed on a mounting plate. The boards are connected to each other with option connectors. Several boards and mounting plates can
be installed in parallel.
Danfoss Drives Oy © 2024.03 AJ475942178716en-000101 / 172K2848A | 93
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