Flowserve 510si Series Digital Positioner - Manual (Page 6)

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User Instructions Logix 510si - LGENIM0510-0
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7 WIRING AND GROUNDING GUIDELINES
Electrical connections: signal cable with cable passage
(NPT, or M20 x 1,5) to terminals 2 x 2,5 mm
Input signal: 4 – 20 mA
NOTE: Observe the minimum requirements of voltage
and equivalent electrical load: 6,0 VDC / 300
ȍ / at
20 mA
The performance is ensured only for a minimum input
current of 3,6 mA.
For wiring, the following notes should be observed:
NOTE: The input loop current signal to the Logix 510si
should be in shielded cable. Shields must be tied to a
ground at only one end of the cable to provide a place
for environmental electrical noise to be removed from
the cable. In general, shield wire should be connected
at the source. (Figure 2)
Connect the 4-20 mA current source to terminals +11
and -12 (Figure 2).
Grounding Screw
The grounding screw, located inside the positioner
cover, should be used to provide the unit with an ad-
equate and reliable earth ground reference. This ground
should be tied to the same ground as the electrical
conduit. Additionally, the electrical conduit should be
earth grounded at both ends of its run. The grounded
screw must not be used to terminate signal shield wires.
Compliance Voltage (Figure 3)
Output compliance voltage refers to the voltage limit
the current source can provide. A current loop system
consists of the current source, wiring resistance, barrier
resistance (if present), and the Logix 510si impedance.
6 TUBING POSITIONER TO ACTUATOR
After mounting has been completed, tube the positioner
to the actuator using the appropriate compression fit-
ting connectors:
Air connections: 1/4” NPT (standard air connection)
Auxiliary power: Pressurized air or permissible gases,
free of moisture and dust in according with IEC 770 or
ISA 7.0.01.
Pressure range: 1,5 – 6,0 bar (22 – 87 psi)
For connecting the air piping, the following notes should
be observed:
1. The positioner passageways are equipped with filters,
which remove medium and coarse size dirt from the
pressurized air. If necessary, they are easily accessible
for cleaning.
2. Supply air should meet IEC 770 or ISA 7.0.01
requirements. A coalescing filter should be installed in
front of the supply air connection Z. Now connect the
air supply to the filter, which is connected to the Logix
500 Series positioner.
3. With a maximum supply pressure of 6 bar (87 psi)
a regulator is not required.
4. With an operating pressure of more than
6 bar (87 psi), a reducing regulator is required. The
flow capacity of the regulator must be larger than the
air consumption of the positioner (7 Nm
3 /h @ 6 bar /
4,12 scfm @ 87 psi).
5. Connect the outlet connector Y of the positioner
to the actuator with tubing, independent of the action
(direct or reverse).
Figure 2: Wiring Diagram
Table 10: Connection Table
Connection Description
+11 Input+ 4..20 mA
-12 Input- 4..20 mA
+31* Output+ 4..20 mA
-32* Output– 4..20 mA
Limit switch 1 - separate board
Limit switch 2 - separate board
Y (0 ⇒) Pneumatic output signal (outlet)
Z (0 ⇐) Air supply
* 0ptional
Y
Z
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