Start And Control Unit; Frequency Converter; Accessories - Nederman FlexPAK DX Serie Manuel De L'utilisateur

3.9 Start and control unit
The unit has a start and control unit, see Figure 5. The
start and control unit has the following components:
1 Transformer TR1, 60 W.
2 Connection block for the transformer TR1.
3 Terminals for external emergency stop.
4 Vacuum setpoint switch.
5 Safety relay.
6 Transformer primary fuses F2 and F3, 6 A slow.
7 Programmable Logic Controller (PLC).
8 Data Unit 2 (DU2), I/O module.
9 AM 2 PT100, temperature sensor input expansion
module.
10 Filter cleaning/test start button.
11 Standby/Running button, which is the On/Off but-
ton.
12 Emergency switch.
13 Terminals: X1: 1-80.
14 Fuse for 24 V DC accessory supply. Fuse F5, 1 A
slow.
15 Terminals Protective Earth (PE).
3.10 Frequency converter
WARNING! Risk of electric shock
The frequency converter is not to be opened
until 5 minutes after the supply voltage has
been disconnected. The capacitors inside the
converter hold a very dangerous voltage until
they have discharged themselves.
CAUTION! Risk of equipment damage
• Do not adjust any parameters in the fre-
quency converter without written author-
isation from the person responsible for this
product. See the Declaration of Conformity.
Any unauthorised adjustment may void the
warranty.
• The unit is not to be started if the cooling
hose has been removed.
Figure 4C shows the cooling air hose that im-
proves the cooling of the frequency converter.
For parameter settings in the frequency con-
verter, see the 'FlexPAK Frequency Converter
Parameter Table' that is a separate document
included with the unit.
The frequency converter controls the unit's motor so
that it operates efficiently and maintains the unit's
vacuum level to help prevent dangerous negative
pressure from developing and the unit overheating.
The manual for the frequency converter is enclosed.
FlexPAK DX
4 Accessories
The FlexPAK DX start and control unit is prepared for
the connection of Nederman accessories and custom-
er connections.
The installation of accessories, extra equipment, and
functions is described in the manual for each product
and according to the electrical diagrams that came
with the unit. Consult your local Nederman represent-
ative for available accessories.
The most common accessory is a PS cable, which al-
lows remote start/stop signalling from the valves on
the duct system. See also
and Chapter 7 PLC settings
about messages and settings for accessories, and cus-
tomer connections.
5 Use
Materials extracted by the unit is to be con-
sidered waste and is to be discarded.
WARNING! Explosion risk
• Do not collect material that may cause igni-
tion or blocking. It is strictly prohibited to col-
lect material that may undergo dangerous
chemical or thermal reactions and/or self-ig-
nite.
• The filter should not be used for filtering
fumes from welding processes if it has been
used for combustible dust.
• Do not make any changes to this product
without consulting Nederman. Adding a relief
duct or changing the spacing or length of fil-
ter elements affects the calculations accord-
ing to EN 14491.
• Clean the unit and the area around it of any
spilled combustible dust before starting the
unit
WARNING! Risk of electric shock
• Personnel operating FlexPAK DX is to pay
special attention to avoiding discharge of
static electricity. The requirements for the
safe use and handling of combustible dust
are described in the explosion protection
document. All personnel are to be informed.
• Work with electric equipment is to be carried
out by a qualified electrician.
• Do not start the unit without connecting and
checking any disconnected grounding points.
See the Installation and Service Manual.
Chapter 6 PLC messages
for more information
EN
25