Samson 1400 Instructions d'exploitation Page 15

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4 Attachment to the control
valve – Mounting parts and
accessories
WARNING!
Attach the positioner, keeping the following
sequence:
1. Mount the positioner on the control valve
2. Connect the supply air
3. Connect the electrical power
4. Perform the start-up settings
The positioner is suitable for the following
types of attachment:
4
Direct attachment to SAMSON
Type 3277 Actuator
4
Attachment to actuators according to
IEC 60534-6 (NAMUR)
4
Attachment to Type 3510 Micro-flow
Valve
4
Attachment to rotary actuators
NOTICE
Attach the positioner to the control valve,
observing the following instructions to avoid
damaging the positioner.
Use only the mounting parts/accessories
listed in the Tables 1 to 5 (pages 30 to
33) to mount the positioner. Observe the
type of attachment!
The positioner is fitted with pneumatic
connections with ¼ NPT threads. If you
need G ¼ threads, attach the connecting
plate (6) listed in the accessories.
Observe the assignment between lever
and pin position (see travel tables on
page 16).
Fit a signal pressure restriction (Table 5
on page 33) for actuators with di
-
aphragm areas smaller than 240 cm².
Lever and pin position
The positioner is adapted to the actuator
and to the rated travel by the lever on the
back of the positioner and the pin inserted
into the lever.
The travel tables on page 16 show the maxi
-
mum adjustment range at the positioner. The
travel that can be implemented at the valve
is additionally restricted by the selected
fail-safe position and the required compres-
sion of the actuator springs.
The positioner is standard equipped with the
lever M (pin position 35).
Note: If the standard mounted lever M is re
-
placed, the newly mounted lever must be
moved once all the way as far as it will go
in both directions to adapt it to the internal
measuring lever.
EB 8387-3 EN 15
Attachment to the control valve Mounting parts and accessories
Fig. 3 · Lever M with pin position 35 (delivered state)
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