F9
Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/pneumatics
F
P31P / P23P
PAR15
Catalog 0700P-E
Technical Information
P31P / P32P Series
Electronic Proportional Regulators
Advanced Functionality
Technical Information
Flow Charts
P32P Regulator 1/2” Ports
P31P Regulator 1/4” Ports
Inlet Pressure - 10 bar (145 psig)
Secondary Pr
essur
e - bar
Secondary Pr
essur
e - (psig)
0
20
40
60
80
100
120
140
0
2
3
4
5
6
7
8
9
10
1
0
5
10
15
20
25
30
35
Flow - dm
3
/s
Flow - (scfm)
10
20
30
40
50
60
70
Inlet Pressure - 10 bar (145 psig)
Secondary Pr
essur
e - bar
Secondary Pr
essur
e - (psig)
0
20
40
60
80
100
120
140
0
2
3
4
5
6
7
8
9
10
1
0
0
60
70
10
50
40
20
80
90
30
100
Flow - dm
3
/s
Flow - (scfm)
20
60
40
80
100
120
140
180
160
200
Response time
P31P
P32P
2 to 4 bar
25 msecs
35 msecs
1 to 6 bar
55 msecs
135 msecs
4 to 2 bar
70 msecs
85 msecs
6 to 1 bar
80 msecs
225 msecs
To fill volume of:
100cm
3
- P31P
330cm
3
- P32P
connected to the outlet of the regulator.
Pilot valve protection
When the required output pressure can not be achieved because of
a lack of input pressure the unit will open fully and will display NoP.
Approximately every 10 seconds the unit will retry. The output pres-
sure will then be approximately equal to the inlet pressure. As soon
as the input pressure is back on the required level, the normal control
function follows.
Safety exhaust
Should the
control signal
fall below 0.1 volts the valve will automati-
cally dump downstream system pressure .
Input protection
The unit has built-in protection against failure and burnout resulting
from incorrect input value, typically:
The 24VDC supply is incorrectly connected to the setpoint input, the
display will show ‘OL’, as an overload indication. The unit will need to
be rewired and when correctly connected will operate normally.
The overload indicator ‘OL’ will also appear should the wrong input
value be applied or the wrong input value be programmed: 4 - 20m
instead of 0 - 10V. To correct this a different set point value should
be input or the unit reprogrammed to correct the set point value
acceptance. (via parameter 4).
Dead Band
The dead band is preset at 1.3% of Full Scale*, adjustable via
parameter 13.
Accuracy
Linearity: = < 0.3% of Full Scale.*
Proportional Band
The proportional band is preset at 10% of Full Scale.*
Fail Safe Operation
• If the P31P / P32P unit has an “0” or “A” in the 12th digit of
the model number
– When the supply voltage drops, the electronic control
reverts to the fail safe mode. The last known output
pressure air consumption. The digital display
indicates the last known pressure setting.
– When the supply voltage is reinstated to the correct
level, the valve moves from the fail safe mode and the
output pressure immediately follows the control signal
requirement. The display indicates the actual output
pressure.
– Note: In the event of loss of both power and inlet
pressure the unit will exhaust downstream pressure.
• If the P31P / P32P unit has an “E” in the 12th digit of the
model number
– When the supply voltage drops, the electronic control
reverts to “Forced Exhaust Mode” and will automatically
exhaust the downstream (regulated) pressure.
– When the supply voltage is reinstated to the correct
level the unit will return to normal operation and follows
the control signal requirement. The display indicates
the actual pressure.
• If the unit has been programmed in manual mode (not with
a control signal) the unit will EXHAUST and the regulator
will need to be reset when power is applied.
Full Exhaust
Complete exhaust of the regulator is defined as P2
≤
1% Full Scale
* Full Scale (F.S.)
For 2 bar (29 psig) versions this will be 2 barr (29 psig), for the 10
bar (145 psig) version full scale will be 10 bar (145 psig).
Degree of Protection
IP65
EU Conformity
CE: standard
EMC: according to directive 89/336/EEC
The new pressure regulator is in accordance with:
EN 61000-6-1:2001
EN 61000-6-2:2001
EN 61000-6-3:2001
EN 61000-6-4:2001
These standards ensure that this unit meets the highest level of EMC
protection.
Mounting Position
Preferably vertical, with the cable gland on top.
Materials: P31P & P32P
• Magnet Core ............................................................................Steel
• Solenoid Valve Poppet ............................................................. FPM
• Solenoid Valve Housing ......................................... Techno Polymer
• Regulator Body (P31P & P32P versions) ....................... Aluminium
• Regulator Top Housing ...........................................................Nylon
• Valve Head .................................................................Brass & NBR
• Remaining Seals ..................................................................... NBR
Settings
The regulator is pre-set at the factory. If required, adjustments can
be made.
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