User manual

2920 1207 05
5
User manual
3 DISPLAY - KEYS
3.1 Display (4-Fig. 2.1)
The display has four lines of 16 characters. A typical display is
shown in Fig. 2.2. It indicates:
1. On the first three lines:
- The name of the sensor of which the actual reading is
displayed
- The unit and actual reading of the sensor
- Messages regarding the compressor operating condition
(compressor loaded, off, etc.), a service need (e.g. for
the oil filter and air filter) or a fault (e.g. shut-down)
2. On the fourth line, just above the three function keys (F1/
F2/F3), the actual functions of these keys.
3.2 Scroll keys (6-Fig. 2.1)
These keys, labelled with vertical arrows, allow to scroll through
the display.
As long as a downwards pointing arrow is shown at the utmost
right position of the display, the key (6) with the same symbol
can be used to see the next item.
As long as an upwards pointing arrow is shown at the utmost
right position of the display, the key (6) with the same symbol
can be used to see the previous item.
3.3 Tabulator key (7-Fig. 2.1)
This key, labelled with two horizontal arrows, allows the operator
to go to the next field of the display, e.g. during modifying of
programmable parameters.
3.4 Function keys (5-Fig. 2.1)
The keys are used:
- To manually load/unload the compressor
- To call up or program settings
- To reset an active motor overload, shut-down or service
message, or an emergency stop
- To have access to all data collected by the regulator
The function keys allow to make the required selection from a
menu of possibilities. The functions of the keys vary depending
on the displayed menu. The actual function is abbreviated and
indicated on the bottom line of the display just above the relevant
key. Only the active and relevant functions at a moment are
shown.
4 MENU-DRIVEN CONTROL
PROGRAMS
In order to facilitate programming and controlling, menu-driven
control programs have been implemented in the regulator.
4.1 Function of control programs (Figs. 4.1
up to 4.3)
Program See Function
section
MAIN 5 Shows in short the operation status
DISPLAY of the compressor. Is the gateway
to all functions.
MAIN MENU 6 Is the gateway to other functions
via submenus.
SUBMENUS
Status data 7 Calling up the status of the
compressor protection functions
(shut-down and shut-down
warning). Resetting of a shut-
down and motor overload.
Measured data 8 Calling up the actual measured
temperature at the compressor
element outlet, the dewpoint (on
compressors with integrated air
dryer) and the status of the motor
overload protection. On GA55 up
to -90C also the actual pressure
difference over the oil separator,
the status of the fan motor overload
protection and on water-cooled
compressors also the actual cooling
water outlet temperature.
Hours 9 Calling up the running hours,
loading hours, regulator hours and
number of motor starts.
Service 10 Calling up and resetting the service
messages for the oil, oil filter, oil
separator, air filter.
Test 11 Display test.
Modify settings 12 Modifying the settings for
regulation (e.g. loading and
unloading), for protection (e.g.
temperature shut-down level) and
for service (e.g. for the oil).
Timer 13 Programming the compressor
start/stop commands.
Configuration 14 Programming the time, date,
display language, units, motor start
mode and date format. On GA5
up to GA45, dewpoint tempera-
ture display mode and the
dewpoint protection.