WAGO 750-643 Manual page 11

The module has two connectors for connecting the MP-Bus and can manage a
total of up to 8 slaves (drives). One sensor can be connected to each slave. The
sensor type (active or passive, e.g. for temperature, humidity or ON/OFF
switches) is dependent on the type of drive.
The sensor value is detected by the drive and passed to the MP-Bus via an
A/D converter. The sensor value is scaled and evaluated in the programmable
fieldbus controller or in a higher-level control system.
The MP-Bus can be supplied directly via the 24 V and 0 V connectors. These
potentials are supplied via the power contacts of a power supply module.
A Belimo parameterizing unit (manual controller or Belimo PC tool) can be
connected to the module, especially for setting the parameters of Belimo
drives. The I/O module has two "Enable Handheld" connectors for this
purpose. If the external parameterizing unit (or the 24 V supply voltage) is
connected to one of these connectors, the module switches off the MP-Bus
supply.
Four green LEDs signal that the module is ready for use, the module bus
communication is free from faults, and the handheld unit is enabled, as well as
transmit, receive and the presence of an external voltage.
The arrangement of the individual output modules can be chosen at will when
engineering the fieldbus node. It is not necessary to use a block-by-block
arrangement.
The output module gets its 24 V supply for the field level from an up-stream
bus module or from a supply module. When the output modules are clipped
into place, the supply potential is automatically fed through to further bus
modules via the internal power contacts.
Note
The I/O module has no power contacts for accepting and relaying the PE
connection. If a PE connection is required by the subsequent I/O modules, a
potential supply module must be used.
Warning
The maximum current that is allowed to flow via the power contacts is 10 A.
When configuring the system, it must be ensured that this total current is not
exceeded. If this should be the case, then an additional supply module must
be used.
The module 750-643 can be used with all WAGO-I/O-SYSTEM 750
controllers, except of the MODBUS programmable controllers
750-812/-814/-815/-816.
WAGO-I/O-SYSTEM 750
I/O Modules
750-643 [MP-Bus Master Module] • 11
Description