Flowserve APEX A9000 Accord - Manual (Page 14)

14
1 +
2 –
4
- 2
0
m
A
IN
1. The positioner passageways are equipped with filters, which remove me- dium 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 (Figure 8). Now connect
the air supply to the filter, which is
connected to the Apex A9000 positioner.
3. With a maximum supply pressure of 6 bar (102 psi) a regulator is not required.
4. With an operating pressure of more than 6 bar (90 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
@ 90 psi).
5. Connect the outlet connector (Figure7) of the positioner with tubing, independent of the action (direct or reverse).
On explosion proof housing air connections are marked S,C+ and C-, plug C- port with proper fitting.
2 - 6 bar
30 - 90 Psi
5 µ
ISO 8573 2.2.2
ISA 7.0.01.-1996 Class 2
Figure 7
9. Wiring and grounding guidelines
Electrical connections: signal cable with cable passage (1/2” NPT, or
M20 x1,5) to terminals 2 x 2,5 mm.
Input signal: 4
– 20 mA
NOTE: Observe the m inim um requirements of voltage and
equivalent electrical load:
The performance is ensured only for a minimum input current of 3.6 mA
Figure 8 Connections
For wiring, the following notes should be observed:
NOTE: The input loop current signal to the Apex A9000 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 8).
Connect the 4-20 mA current source to terminals +1 and -2, see connection
table. Connection Description
+1
–2
Input +4-20 mA
Input –4-20 mA
Pneumatic output
signal (outlet)
Air supply