Samson 3730 Series Mounting And Operating Instructions page 36

Connections
Cable entries
Cable entry with M20x1.5 cable gland, 6 to
12 mm clamping range.
There is a second M20x1.5 threaded bore
in the housing that can be used for addi-
tional connection, when required.
The screw terminals are designed for wire
cross-sections of 0.2 to 2.5 mm². Tighten by
at least 0.5 Nm.
The wires for the reference variable must be
connected to the terminals 11 and 12 lo-
cated in the housing. Only use a current
source!
NOTICE
– The incorrect connection of a voltage
source of just around 7 V (or around 2 V
when connected to the wrong pole) by
mistake can damage the positioner.
– The minimum current for the positioner is
3.7 mA. It should not be unnecessarily
interrupted for less than two minutes.
In general, it is not necessary to connect the
positioner to a bonding conductor. Should
this be required, however, this conductor
can be connected inside the device.
For operation of the limit switches in
Type 3730-11/-13/-18 Positioners, switch-
ing amplifiers which comply with
EN 60947-5-6 must be connected to termi-
nals 41/42 and 51/52 in the output circuit.
If the positioner is to be installed in hazard-
ous areas, the relevant regulations must be
observed.
36
EB 8384-1 EN