Combination Of Options - Samson 3274 Mounting And Operating Instructions

Design and principle of operation
Inductive limit contacts
Optionally, the actuator can be equipped
with a maximum of two inductive contacts.
They are no-wear NC contacts, which are
used to influence the tasks of control equip-
ment. Isolating switch amplifiers according to
EN 50227 must be installed in the output cir-
cuit for the operation of inductive limit con-
tacts.
The inductive limit contacts are not suitable
for retrofitting.
Resistance transmitters
The actuator version three-step control can
optionally be equipped with one or two po-
tentiometers. They are linked to the gear of
the actuator. They consist of one potentiome-
ter, which produces a resistance signal be-
tween approx. 0 and 1000 Ω (usable range
0 to 900 Ω) proportional to the travel. It can
be used to assess the position of the actuator
stem. The resistance transmitters are suitable
for retrofitting. The installation and adjust-
ment of the mechanical limit contacts is de-
scribed in the 'Installation' section.
3-4
3.3.1

Combination of options

The actuator can be fitted with the following
options:
Table 3-1: Combination of options
Accessories
Positioner
Position transmitter
Resistance transmitter 1
Resistance transmitter 2
Mechanical limit contact 1
Mechanical limit contact 2
Mechanical limit contact 3
Inductive limit contact 1
Inductive limit contact 2
Internal use (with positioner and position transmitter)
1)
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1)
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EB 8340 EN
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