Unit Operation Modes; Plc Messages - Nederman FlexPAK 800 DX Manuel D'instruction

EN FlexPAK 800/1000 DX
3. Press the Standby/Running button on the control panel, see Figure 5, item 9. The
white lamp lights up and the display shows 'Standby'.
4.
The unit starts when the test start button is pressed, Figure 5, item 8, or when a valve
is opened at a workstation.
Always switch off the unit at the end of the shift by pressing the Standby/Running button
on the control panel, or use the weekly timer, see Section '7.2.3 Weekly timer'.
5.4

Unit operation modes

FlexPAK 800/1000 has the following four operation modes:
1. Off mode
2. Standby mode
3. Running mode
4. Idling mode
See Section '6.1 Status messages' for more information about each mode.
How the unit moves from one operation mode to another is explained below. See also
Figure 18 for a flow chart showing how the unit goes through its four different operation
modes.
As discussed in Section '5.3 Start the unit', when the unit is in Off mode, the unit can be put
into Standby mode with its motor off and the Filter Cleaning Valve (FCV) closed by pressing
the Standby/Running button. While the unit is in Standby mode, the unit can be put back
into Off mode again by pressing the Standby/Running button.
The unit goes from Standby mode into Running mode when it receives a pilot signal by a
valve being opened at one or more work stations (in other words, someone starts to work).
The unit's motor is now on and the FCV is closed. The DIR_Time and SSR_Time timers are
not started, see Sections '7.2.2 DIR_Time' and '7.2.1 SSR_Time'.
The unit stays in Running mode as long as there is an active pilot signal. However, the unit
can still be put into Off mode by pressing the Standby/Running button.
Note that if only one workstation is connected to the unit, or if only one work station is
in use and work stops at that one station, the pilot signal stops. If there is more than one
work station connected to the unit, and more than one work station is in use, the pilot
signal only stops if work stops at all workstations (in other words, all valves close).
When the pilot signal stops, the DIR and SSR timers start. If work resumes at one or more
work stations within 10 seconds, the unit stays in Running mode. The DIR and SSR timers
are reset back to zero and are stopped.
If DIR_Time is set for 10 seconds (default), and the pause in work is longer than 10 seconds,
DIR_Time elapses. The unit then goes into Idling mode with its motor on and the FCV open.
If a new pilot signal is sent within 12 minutes, the unit goes back into Running mode. The
DIR and SSR timers are again reset to zero and are stopped. However, if SSR_Time is set for
12 minutes, which is the default setting, and there is no new pilot signal within 12 minutes,
SSR_Time also elapses.
The unit then goes into Standby mode until it either receives a new pilot signal that puts
the unit back into Running mode, or the unit is turned off (in other words, put into Off
mode) by the weekly timer, see '7.2.3 Weekly timer', or by pressing the Standby/Running
button.
6

PLC messages

The following sections show the different status, warning and alarm messages that can be
seen in the PLC display. See also the PLC Settings Manual and the Installation and Service
Manual.
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