Presetting The Valve Travel - Samson 3787 Mounting And Operating Instructions

Foundation fieldbus positioner
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Attachment to the control valve
for the assigned travel, see Table 5.
Intermediate values must be calculated.
Move the clamp (21) beforehand to
clasp the pin.
5. Measure the distance from the middle
of the shaft (25) to the middle of the pin
(19). This value must be entered later
when the positioner is being con-
figured.
Table 4 Attach. acc. to IEC 60534-6
NAMUR mounting kit
See Fig. 4 for parts
Attachment to Fisher and Masoneilan linear actuators
(one each of both mounting kits is needed per one actuator)
Accessories
Press. gauge mounting block
Signal pressure throttles (screw-in type and brass throttle)
Filter check valve, replaces vent plug and increases the degree of protection
to IP 65 (one included with the delivered positioner)
Table 5 Attachment according to IEC 60534-6
Travel mm *)
Pin on mark *)
Corresp. distance: pin/lever pivot
With lever
Transmission pin (27) at position
*) Deviating travels (intermediate values) must be calculated accordingly
16
EB 8383-1 EN
Control valve
Valve with cast yoke
Valve with
rod-type
yoke with
rod diameter
in mm
Pressure gauge set
7.5
1
42
A

2.2.2 Presetting the valve travel

1. Adjust the shaft (25) in the adapter
housing so that the black pointer (24) is
aligned with the casted marking on the
adapter housing.
2. Screw the clamping plate (22) tight in
this position using the screw (23).
3. Screw the coupling pin (27) into the po-
sitioner lever (26) on the side with the
Travel in mm
7.5 to 60
30 to 120
20 to 25
20 to 25
25 to 30
25 to 30
30 to 35
30 to 35
G 1/4:
1400-7458
St. st./brass:
1400-6957
15
15
30
30
1
2
1
42
84
42
N1 (125 mm in length)
A
With lever
N1 (125 mm)
N2 (212 mm)
N1
N2
N1
N2
N1
N2
1/4 NPT:
St. st./St. st.:
60
30
60
2
1
2
84
84
168
N2 (212 mm in length)
B
A
Order no.
1400-6787
1400-6789
1400-6436
1400-6437
1400-6438
1400-6439
1400-6440
1400-6441
1400-6771
and
1400-6787
1400-7459
1400-6958
1400-6964
1790-7408
60
120
1
2
84
168
B

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