Nederman FlexPAK DX, Инструкция по установке и обслуживанию

Страница: 20 / 36

FlexPAK DX
3.9 Start and control unit
3.9.1 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
• No parameters in the frequency converter
may be adjusted without very detailed know-
ledge about the consequences. Adjustment
voids 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 a dangerous negative
pressure from developing and the unit overheating.
The manual for the frequency converter is enclosed.
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 the PLC Settings Manual for
more information about messages and settings for ac-
cessories, and customer connections.
5 Installation
WARNING! Explosion risk
• Some types of dust may cause a dust explo-
sion and/or fire. Before installation, investig-
ate whether the dust to be collected by the
system constitutes a risk.
• We recommend that fire alarms and appropri-
ate extinguishing systems are to be installed
at all locations where collected combustible
dust is stored.
WARNING! Risk of personal injury
• Use proper lifting and protective equipment.
• Be careful not to let the unit tip over to avoid
a crushing risk.
• The unit is to be anchored to the floor, par-
ticularly if it is located at a high level, to en-
sure that it does not move and fall down. The
frame has four holes for anchoring. Take care
during relocation and transport of the unit to
avoid tipping. If the unit is to be moved, the
frame is to be attached to the front of the
bottom frame, see Figure 10 , item 1.
Standards relating to the connection and use
of filters in hazardous areas are to be taken in-
to consideration, especially national standards
for installation. Only trained personnel familiar
with these standards is allowed to handle this
type of filter.
The designer of the system as a whole has to
guarantee the correct function of all inter-
acting products or components and ensure
that the complete system meets all necessary
safety requirements.
Make a layout for the entire system before in-
stalling the unit.
20