Grundfos CRE Safety Instructions And Other Important Information page 11

7.9 Functional modules
The functional modules are different types of add-on
boards containing various types of input and output
terminals for the user to connect different types of
sensors, for example switches and relays.
The product can only contain one functional module
at the time.
The following functional modules are available:
• FM110
• FM310
3)
• FM311
3) Without Bluetooth (BLE).
7.9.2 Functional module, FM310 and FM311
WARNING
Electric shock
Death or serious personal injury
‐
Make sure that the wires to be
connected to the connection groups
below are separated from each other
by reinforced insulation in their entire
lengths.
The selection of module depends on the application
and the required number of inputs and outputs.
7.9.1 Functional module, FM110
WARNING
Electric shock
Death or serious personal injury
‐
Make sure that the wires to be
connected to the connection groups
below are separated from each other
by reinforced insulation in their entire
lengths.
DI3
NC C1 NO
5V A
The inputs and outputs are internally separated from
the power supply-conducting parts by reinforced
insulation and galvanically separated from other
circuits. All control terminals are supplied with safety
extra-low voltage (SELV), ensuring protection against
electric shock.
Cables for the relays and the Ethernet cable must be
rated at least 250V/2A.
S24 ST1 ST2
24V AI2 5V TX RX
OFF ON
Y B AI1 DI1 24V
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