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1. DELCOS 3100 Electronics
34
1.7.3
Setting the volumetric-flow unit for
the status display [DISPLAY UNITS =
m3/min] (version RS and SR only)
This value can be set to [m3/min], [m3/h] or [cfm].
The status display indicates the machine's current
volumetric flow rate. As the LCD display can only show
a limited number of characters, the display unit is preset
here. This unit does not appear on the status display.
1.7.4
Speed limitation (version SR only)
The maximum speed of the machine can be limited.
This is done by programming one of the inputs to the
[EXT: RPM LIMIT] function in the [OPTIONAL INPUTS]
menu.
If the relevant input is now connected via an external
contact, speed will be limited to the value set in the
[EXT: LIMIT] menu option from the [LIMIT VALUES]
menu.
It must be noted that this value does not represent a
fixed speed, i.e. if less air is required in the
compressed-air network, the machine can still adjust
the speed to a value below [EXT. LIMIT].
1.7.5
Remote control
Danger
In this operating mode, the compressor can start
automatically at any time!
Attention
It is only permissible to connect floating contacts
to the terminal strip. Interference voltages will
irreparably damage the DELCO3100.
The floating contacts must not be further than
20 metres from the terminal strip. If necessary,
coupling relays must be installed in the control
cabinet.
The control system provides the capability of switching
the compressor on and off externally by connecting a
floating contact.
To activate the remote on/off input (terminals
3.25/X3.26), you must switch the remote control
[REMOTE CONTROL ON] on in the [CONTROL MENU]
menu.
•
With [[REMOTE CONTROL ON], LED d lights up
and the compressor's
key and
key are
disabled.
•
To start the system, the controller expects a
REMOTE ON edge at the remote on/off input.
•
The system continues to run until the remote
ON/OFF input is closed.
•
The system stops when the remote on/off input is
opened.
•
If the system has already been switched off
manually and if it is set to [ON], it remains in
operation when the remote on/off input is closed.
•
On deactivating the [REMOTE CONTROL OFF]
remote operating mode, the system stays ON or
OFF.
1.7.6
Changing over pressure by remote
control
Danger
In this operating mode, the compressor can start
automatically at any time!
Attention
It is only permissible to connect floating contacts
to the terminal strip. Interference voltages will
irreparably damage the DELCO3100.
The floating contacts must not be further than 20
metres from the terminal strip. If necessary,
coupling relays must be installed in the control
cabinet.
Version RS: Pressure changeover can be activated
through an external, floating contact. This takes place
through a digital input on the base-load sequencing
module.
Version FS: as version RS, however the module is
optional.
Version SR: It is possible to switch over to a second
pressure range through the "second pressure band"
input (terminals X4.6,X4.14) (see Chapter 1.3.7
[TIMER CONTROL]) menu.
While pressure is being changed over, you will see the
[p2] symbol flashing in front of the display of the current
network pressure.