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10

Fault clearance

Warning

Risk of injury from compressed air/pressure surge.
Products under pressure can cause personal injury and material damage.
 Before applying the supply pressure: Set the setpoint value of the VPPL to zero.

Malfunction

Display

Possible cause

Remedy

The valve
switches off
after 5 s

LED status at
the VPPL
flashes red

Supply pressure lacking

1. Set setpoint value to zero
2. Apply supply pressure
3. Set required setpoint value

Fig. 5

Note

For additional information on fault clearance 

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 Operating instructions VPPL

11

Accessories

Designation

Product type

Sub-base

PAML-CP-186-HP3

Module connector

PAML-MK-186-HP3

Propor tional pressure regulator

VPPL

Pneumatic silencers

U-G1-HD-SA

Fig. 6

12

Technical data

PREL-186

-40CFX

-40CFX2

Supply pressure p1

[bar]

0 … 50

Auxiliary pilot air connection (to PAHL)

G

¼

Pressure range, auxiliary pilot air

[bar]

6 … 10

Pressure regulation range

[bar]

0.4 … 40

Signal setpoint
value
(Analogue input)

Voltage

[V DC]

0 … 10

Current

[mA]

4 … 20

Operating voltage

[V DC]

21.6 … 27.6

Operating medium

Compressed air to ISO 8573-1:2010 [7:4:4]

Inert gases

Temperature of medium

[°C]

+5 … +50

Ambient temperature

[°C]

+5 … +50

Mounting position

Vertical with VPPL on top

Alternative mounting position

Vertical with VPPL underneath

Flow direction

Marking on the housing: from 1 to 2

Type of mounting

– In-line installation
– Module connector
– Sub-bases

Classification in accordance with
Pressure Equipment Directive

Category I

CE marking (see declaration of
conformity) 

1)

 

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www.festo.com/sp

– According to EC Pressure

Equipment Directive

– According to EC Pressure

Equipment Directive

– In accordance with the

EC Machinery Directive

Max. cable length

[m]

30

Weight

[kg]

37.1

40.4

1)

The device is intended for use in an industrial environment. 
Measures for interference suppression may need to be implemented in residential areas.

Fig. 7

Dependence of p1 on p2

max

PREL-186-HP3-...-40...

Fig. 8

Pressure ramp at switch-on of the PREL

(Not activated with ongoing controlled operation)

PREL-186-...-40...

Fig. 9

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