Schneider Airsystems Air Master Serie Manual De Instrucciones página 26

GB
MODIFIABLE PARAMETERS
By pressing the
must be introduced in order to access modifications. Use the
0) Control unit ID (assistance password): selects the identification of the control unit. It is possible to select several identifications
if several compressors are connected to the same line RS485.
1) Pre-alarm time (assistance password): the counter is automatically graduated every hour of machine functioning, when the
counter arrives at 0 the control unit enters maintenance alarm conditions.
The counter with the negative sign (-) in front indicate show many hours have passed since the last maintenance alarm. Using
the and keys it is possible to set the new value desired (in this way excluding the previous alarm).
2) Historical alarms (no password required): by means of this menu it is possible to visualise the last 3° alarms.
3) Pre-alarm temperature (factory password): by means of this menu it is possible to set the temperature "delta" (expressed in
°C) with respect to the maximum alarm temperature. This value can be set from 1 to 20.
Example: if the maximum temperature is 120 °C and the delta value is 10°C, on reaching 110 °C the maximum temperature
pre-alarm will be tripped.
4) Maximum temperature (factory password): by means of this menu it is possible to set the maximum accepted temperature.
The field of regulation goes from 0 to 150°C.
5) Minimum temperature (factory password): by means of this menu it is possible to set the minimum accepted temperature.
The field of regulation goes from 0 a -14 °C.
6) Fan temperature (assistance password): by means of this menu it is possible to adjust the activation temperature of the
cooling fan. The field of regulation is between 0 to 150°C. The fan starts at the pre-fixed temperature. The hysteresis is fixed by
10°C.
7) During the empty functioning cycle (assistance password): by means at of this menu it is possible to change the duration
time of the machine empty cycle. The field of regulation goes from 1 to 250 seconds.
8) Automatic Start (assistance password): if activated, this parameter enables automatic start-up if there is a power cut. When
the voltage is restored the compressor re-starts automatically.
9) Internal phase sequences (assistance password): this parameter allows the control on the internal phase sequences or
disables it by activating the phase sequence input on the terminal board.
10) Language (no password required): this parameter allows to change the language in which the messages are displayed.
There are 5 languages available (Italian, English, German, Spanish, French).
11) Enabling of RS485 (no password required): this parameter is used to enable the transmission by means of RS485 and
automatically disable that on RS232.
12) Pressure sensor (assistance password): enables "4-20 mA" input where the pressure sensor must be connected. By
enabling this parameter the pressure measurement appears on the display.
By enabling this parameter the external pressure gauge contact changes function and becomes the minimum pressure input
pressure gauge of the oil-separator. As such it prevents the re-start of the compressor if the pressure in the oil-separator is high.
13) PSI/BAR (no password required): selects the unit of measurement of the pressure.
14) Set empty/pressure functioning (no password required): using this parameter it is possible to set the pressure at which the
compressor must stop. If the inverter is activated this parameter indicates the functioning pressure at which the inverter must start
to choke in order to keep it stable.
15) Start enable delta pressure (password not required): the pressure at which the control unit enables compressor re-
starting.
Example: Assuming a 1 bar start enable delta pressure and 9 bar operating pressure, the compressor would stop at 9.5 bar
and would start again at 8.5 bar.
16) Maximum pressure (service password): this parameter sets the maximum pressure value permissible in operation, i.e. the
maximum pressure of point 14.
17) Maximum alarm pressure (factory password): this parameter sets the maximum pressure value at which an alarm is
tripped in the control unit.
18) Remote pressure (service password): this control is used to manage multi-compressor systems.
19) Inverter (service password): inverter enable. When enabled, the service pressure switch input serves as an input for the
oil separator minimum pressure switch and inhibits re-starting when the oil separator tank is pressurized.
20) Minimum operation rate (service password): minimum operation rate at which inverter must operate (max. rate is
100%).
21) Load delay (service password): this parameter is a time delay in seconds before load solenoid valve is energized to bring
compressor from minimum to maximum frequency.
22) Inverter integrative (service password): this parameter modifies the time constant of the integrative component of
inverter rate calculation.
ALWAYS USE THE
10 10
10 10 10
CONTROLS AND SETTINGS
key the machine stops (OFF), access the functioning parameters menu. Sometimes the password
AND KEYS TO SET THE VALUE AND CONFIRM USING THE
and keys to scroll the menu.
KEY