4
7 AMI 70 en
PNEUMATIC VALVE SPECIFICATIONS
Valve design
Pilot operated spool valve
Pilot operator options
Solenoid coil or Piezo
1
Configuration
Single pilot
5/2 (5-way, 2-position) spring return
Dual pilot
Shuttle piston, 5/2 (5-way, 2-position)
Flow rating
0.75 Cv (0.64 Kv)
Porting
1/4" NPT
Operating pressure
2.7 to 7.5 bar
Filtration requirements
40 µm (Piezo, 30 µm)
Operating temperature
2
See pilot specifications below
Operating life
1 million cycles
Manual override
Internal momentary
Material of construction
Spool
Nickel plated aluminum
Body
Epoxy coated anodized aluminum
O-ring spacers
Polysulphone
End caps & fasteners
Stainless steel
O-rings
Nitrile compound
Piezo pilot
Filtration requirements
Dried air / 30 µm
Operating temperature
-10° to +60 °C
DC power
2 mA / 6.5 V DC
Solenoid pilot
Electrical ratings
H option
0.6 W / 22 V DC min.,
up to 130 V AC max.
E (IS) option
0.5 W, 12 to 15 V DC
D option
0.5 W / 24 V DC
AC current consumption 18 mA (H)
Operating temperature
2
-18° to 50 °C
1
Piezo used for bus powered FOUNDATION fieldbus
applications only.
2
Extended temperature option (-40° to +80 °C) availa-
ble. Option -T at end of type code.
General specifications and ratings
Materials of construction
Housing and mounting
manifold
Epoxy coated anodized
aluminum
Cover and visual indicator Lexan polycarbonate
Fasteners and mounting
adaptors
Stainless steel
Pneumatic valve
See Pneumatic valve
specifications below
Temperature ratings (pneumatic valve dependent)
Piezo pilots (A)
-10° to +60 °C
Solenoid pilots (D, E, H) -18° to +50 °C
Special solenoid pilot
-40º to +70 °C
available, option -T in type coding.
Position sensor system
Accuracy
Within 1°
Repeatability
Within 1°
Setting buffer
2° from set point
(Rotational distance from
original set point where
switch will energize on return
stroke.)
Dead band
3° from set point
(Rotational distance from original
set point where switch will
de-energize.)
Maximum rotational range120°
Operating life
Pneumatic valve
1 million cycles
Approvals
II 1G Ex ia IIC T5
II 3G Ex nA nC IIC T5
Hazardous area ratings
Ex ia:
Sensor:
Ui = 16 V, Ii = 25 mA, Pi = 1.0 W,
Ci = 4.4 nF, Li = 0 mH
Solenoid:
Ui = 28 V, Ii = 120 mA, Pi = 1.0 W,
Ci = 0 nF, Li = 0 mH
Ex nA nC:
AMI33_:
U
≤
75 V DC
AMI44_:
U
≤
24 V DC
AMI93_, AMI94_:
U
≤
32 V DC
AMI96_, AMI97_:
U
≤
31.6 V DC
Enclosure protection
IP67
Fig. 2
Spring return actuator with rebreather open
Fig. 3
Double acting actuator with rebreather closed
2
3
5
1
4
SR
Actuator
Axiom Pneumatic Valve
2
3
5
1
4
DA
Axiom Pneumatic Valve
Actuator