Emerson AVENTICS ED02 Betriebsanleitung Seite 20

Depending on the model, the set point can be controlled by the current, voltage,
or a potentiometer.
The device generates the supply voltage for the potentiometer in devices with an
external potentiometer. The sliding contact of the potentiometer is connected
with the set point input. See g 6.7 Connecting the supply voltage and set
Depending on the model, control the outlet pressure either via the controller
u
or a potentiometer.
The characteristic curve depicts the linear interrelation between current and out-
let pressure or voltage and outlet pressure.
Output pressure
max. (PS)
Min.
From
Fig. 5: Linear course of the characteristic curve
The devices have a set point entry of 50 mbar. This means that set
points with an output pressure of less than 50 mbar will be set to 0 bar
and the outlet connection exhausted.
9 Disassembly and exchange
9.1 Disassembling the ED02 pressure regulator
Danger of burns caused by hot proportional solenoids!
Touching the proportional solenoids during operating may lead to burns.
1. Observe the warning sign on the right located on the device.
2. Let the device cool off before disassembling it.
3. Do not touch the device during operation.
Disconnecting plugs when under voltage will damage the device!
Large differences in potential occur when disconnecting plugs under voltage,
which could damage the device.
Make sure the relevant system component is not under voltage before dis-
u
assembling the device.
The following switch-off sequence must be observed in order to disassemble the
ED02 pressure regulator:
1. Stipulate a set point of 0 bar to exhaust the ED02 pressure regulator and the
outlet line on the outlet connection 2 (2).
2. Switch off the 24 V DC supply voltage.
3. Remove the connected plugs.
4. Switch off the supply pressure and exhaust the supply line.
5. Remove the pneumatic lines.
6. Depending on the type of mounting, remove the mounting screws or loosen
the rail mounting.
If several devices are stacked:
Take the screws out of the through holes and remove the desired device.
u
9.2 Exchanging the ED02 pressure regulator
To exchange the ED02 pressure regulator, you must first disassemble it as de-
scribed above and then assemble a new ED02 pressure regulator .
AVENTICS™ ED02 | R414002573-BAL-001-AG | English
Set point/actual value
To
00135405
CAUTION
NOTICE
10 Disposal
Careless disposal of the ED02 pressure regulator could lead to pollution of the en-
vironment.
Dispose of the ED02 pressure regulator in accordance with the currently appli-
point. u
cable regulations in your country.
11 Care and maintenance
Dangerous movements!
Danger of death, injuries or damage to property!
Always make sure that the relevant system part is not under voltage or
u
pressure before you clean or service the device. Protect the system against
being restarted.
Danger of burns caused by hot proportional solenoids!
Touching the proportional solenoids during operating may lead to burns.
1. Observe the warning sign on the right located on the device.
2. Let the device cool off before disassembling it.
3. Do not touch the device during operation.
11.1 Servicing the ED02 pressure regulator
No special care is required for the ED02 pressure regulator. Note the following if
you would like to clean the device:
Damage to components!
Solvents and aggressive detergents will destroy the surface, labeling and seals
of the device!
1. Check that all seals and plugs for the plug-type connections are firmly fitted
so that no humidity can penetrate the ED02 pressure regulator during
cleaning.
2. Only clean the device using a slightly damp cloth. Only use water to do this
and, if necessary, a mild detergent.
11.2 Maintaining the ED02 pressure regulator
11.2.1 In normal ambient conditions
In normal operation, the ED02 pressure regulator is maintenance-free.
However, the system-specific maintenance intervals must be observed.
u
11.2.2 In aggressive ambient conditions
The seals in the ED02 pressure regulator may age faster under aggressive ambi-
ent conditions.
Every now and then, check that the seals on the pressure regulator are in per-
u
fect order.
A damaged seal can be recognized by parts of the seal visibly protruding from
the housing gaps.
Defective seals will lead to pneumatic leaks and non-compliance with the IP65
protection class.
Immediately exchange the device if the seals are defective.
u
12 Troubleshooting
Malfunction
No output pressure present
WARNING
CAUTION
NOTICE
Possible cause Remedy
No power supply Connect power supply
Check power supply polarity.
Switch on system component
No set point stipulated Stipulate a set point
No supply pressure available Connect the supply pressure
20