Atlas Copco GA90C Bedienungsanleitung PDF herunterladen (Seite 17)

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User manual

12 MODIFY SETTINGS SUBMENU:

Modifying settings for regulation,

protection and service

12.1 Function

To modify a number of programmable parameters, including:

1 Regulation settings:

- Unloading pressure

- Loading pressure

- Motor running time in star

- Load delay time

- Number of motor starts/hour

- Minimum stop time (i.e. the time period during which

the compressor, if stopped automatically, remains

stopped whatever happens with the air net pressure)

- Required stop period (the compressor will not be stopped

automatically by the regulator unless a standstill period

equal to the sum of the minimum stop time and required

stop period is expected)

- Power recovery time (if automatic restart after voltage

failure is activated) 1)

- General permissive start time (not used for these GA

compressors)

2 Protection settings:

- Shut-down level for the compressor element outlet

temperature

- Shut-down warning level for the compressor element

outlet temperature

- Delay time for signal (i.e. the time period during which

the shut-down signal must exist before the compressor

is shut down)

For GA Full-feature (integrated air dryer) also:

- Dewpoint warning level (not for GA5 FF up to GA45

FF)

- Delay time for signal (i.e. the time period during which

the warning signal must exist before the warning message

appears)

- Delay time at starting (i.e. the time period during which

the warning signal is ignored after starting to allow the

dryer to reach the dewpoint temperature)

On water-cooled GA55/75 compressors also:

- Warning level for the cooling water outlet temperature

- Delay time for signal (i.e. the time period during which

the warning signal must exist before generating the

warning)

- Delay time at start (i.e. the time period after starting

which must expire before generating a warning)

3 Service settings:

Service level for the:

- Oil

- Oil filter

- Air filter

- Oil separator

12.2 Procedure

1. Activate the main menu by pressing the key <<Menu>> (5-

Fig. 2.1).

2. Scroll through the available options by using the scroll keys

(6-Fig. 2.1) until the option <<Modify Settings>> is shown

on the second line of the display.

3. Press the key <<Slct>> (select) (5-Fig. 2.1).

A submenu is started, allowing the operator to select

between following options:

- Regulation

- Protections

- Service

4. Scroll through the options by using the scroll keys (6-Fig.

2.1) until the desired option is shown on the display.

5. Press the key <<Slct>> (select).

12.3 Modifying compressor regulation

settings

1. Call up the modify settings submenu and select the option

<<regulation>>. See section 12.2.

2. The first option (i.e. unloading pressure) of a list of

programmable parameters is shown. Use the scroll keys

(6-Fig. 2.1) to select the parameter to be modified.

3. For each parameter, the screen and modifying procedure

are similar to the example below.

12.3.1 Modifying the loading pressure

1. Consult sections 12.1 up to 12.3 for selecting the option

<<loading pressure>>.

2. When selecting the loading pressure, a display similar to

that shown in Fig. 12.1 will appear:

Loading press ↑

bar 6.6

↓

Menu Mod

F1 F2 F3

Fig. 12.1. Example of a modifying screen (regulation settings)

The example in Fig. 12.1 indicates:

- On line 1 the related parameter, i.e. <<Loading pressure>>

- On line 2 the unit and the actual value, i.e. <<bar 6.6>>

- On the bottom line the available selections, i.e. <<Menu>>

to return to the submenu and <<Mod>> to modify the

parameter.

3. After pressing the key <<Mod>> (modify) the value of the

parameter starts blinking and the functions of the keys (5-

Fig. 2.1) change into:

F1 <<Prog>> (program)

F2 <<Lim>> (limitations)

F3 <<Canc>> (cancel)

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 29 30

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