Flowserve Logix 1200e LGAIM0044 - Manual (Page 6)

44-6 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611
The spool valve chamber has two parts: the spool
valve cover, (item 9, SKU 130811) and spool valve
shroud (item 10, SKU 130825). The spool valve cover
is replaced by SKU 10134649 for early versions of the
Logix 1000 positioner or SKU 10160335 for later ver-
sions (identified by the 1200e or the round window in
the main cover). This new cover has a
3 / 8 -inch NPT
hole where tubing/piping must be attached. The spool
valve shroud is discarded and not replaced with any-
thing. The maximum allowable back pressure while
stroking the valve is 8 psi (0.55 bar). Higher pressures
will cause problems with overshoot but permanent
damage will not occur until pressures exceed 20 psi
(1.4 bar).
Tubing Positioner to Actuator
Proper tubing orientation is critical for the positioner to
function correctly and have the proper failure mode.
Refer to Figure 1 and note that for air-to-open valves,
the Output 1 port of the positioner manifold is tubed to
the bottom side of the actuator. The Output 2 port of
the positioner manifold is tubed to the top side of the
actuator. For air-to-close valves the above configura-
tion is reversed.
For single-acting actuators Output 1 port is always
tubed to the actuator regardless of air action. Output 2
port must be plugged.
WARNING: This product has electrical conduit
connections in either thread sizes 0.5-inch NPT or
M20 which appear identical but are not inter-
changeable. Forcing dissimilar threads together
will damage equipment, cause personal injury and
void hazardous location certifications. Conduit fit-
tings must match equipment housing threads
before installation. If threads do not match, obtain
suitable adapters or contact a Flowserve office.
Wiring and Grounding Guidelines
Input Cable Shielding (Figure 2)
The input loop current signal to the Logix 1200e digital
positioner should be in shielded cable. Shields must
be tied to a ground at only one end of the cable to pro-
vide a place for environmental electrical noise to be
removed from the cable. In general, shield wire should
be connected at the source.
Grounding Screw
The green grounding screw, located inside the termi-
nation cap, should be used to provide the unit with an
adequate and reliable earth ground reference. This
ground should be tied to the same ground as the elec-
trical conduit. Additionally, the electrical conduit should
be earth grounded at both ends of its run.
The green grounding screw must not be used to
terminate signal shield wires.
Figure 5: Spool Cover Vent
M aximum Allowable
spool B
ack Pressure
8 psi (0.55 bar)
3 /
8
-inch NPT x 3 /
8
-inch
Swagelok Tube Fitting
Customer Connection
3 /
8
-inch Tubing