User`s manual

10
5.3 Wiring of the differential driver common terminal
When the differential driver output type (QD75D1/QD75D2/QD75D4) is used,
an inter-common potential difference may occur between the differential driver
common terminal and the differential receiver common terminal of the drive
unit.
To eliminate an inter-common potential difference, connect between the
differential driver common terminal of the QD75D1/QD75D2/QD75D4 and the
differential receiver common terminal of the drive unit.
When the common terminal of the drive unit is a photocoupler connection type,
it need not be connected to the differential driver common terminal of the
QD75D1/QD75D2/QD75D4 since an inter-common potential difference does
not exist. (For the driver unit specifications, refer to the manual of the drive unit
used.)
The following gives an example of wiring the differential driver common terminal
of the QD75D1/QD75D2/QD75D4.
Up to two wires can be connected to one differential driver common terminal.
(Refer to "2. Performance Specifications" for details.)
To differential receiver common
terminal of drive unit.
Module front
Differential driver common terminal
Module bottom
Module front
Module bottom
Insert until hook
en
g
a
g
es
Module side