VACUUBRAND VNC 1 User Manual
page 1 of 35
Technology for Vacuum Systems
Instructions for use
VNC 1
Vacuum Controller
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
page 2 of 35
Dear customer,
Your VACUUBRAND vacuum controller shall support you at your work for a long time without any trouble
and with full load output. Thanks to our large practical experience we attained much information how you
could add to an efficient application and to personal safety. Please read these instructions for use prior to
the initial start-up of your controller.
VACUUBRAND vacuum controllers are the result of many years of experience in construction and practical
operation of these vacuum controllers combined with the latest results in material and manufacturing
technology.
Our quality maxim is the ”zero fault principle”:
Every delivered vacuum controller is tested extensively including an endurance run. Due to this endurance
run, also faults, which occur rarely, are reported an can be corrected. Every single vacuum controller is
tested on achievement of the specification after the endurance run.
Every VACUUBRAND controller leaving our factory achieves the specification. We feel obliged to
this high quality standard.
We are aware that the controller should not draw a part of the real work and we hope to contribute with our
products to an effective and troublefree realisation of your work.
Yours
VACUUBRAND GMBH + CO KG
After sales service: Contact your local dealer or call +49 9342 808-193.
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
page 3 of 35
Contents
Safety information! ....................................................................................................4
Technical data............................................................................................................ 6
Description ................................................................................................................8
Notes on operation.................................................................................................. 13
General view of factory-set modes .........................................................................14
Menu structure of controller ...................................................................................15
Working with the controller .....................................................................................18
Readjustment ..........................................................................................................24
Calibration in the factory......................................................................................... 25
Interface parameters ............................................................................................... 25
Read commands .....................................................................................................26
Write commands...................................................................................................... 28
Troubleshooting ...................................................................................................... 30
Cleaning the pressure transducer .........................................................................31
Notes on return to the factory ................................................................................ 32
Health and safety clearance form ..........................................................................33
Attention! Important notes!
Not permitted! Misuse may cause damage.
Isolate equipment from mains.
Note.
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
Safety information!
Remove all packing material, remove the protective covers and keep, inspect the
equipment.
If the equipment is damaged, notify the supplier and the carrier in writing within three
days; state the item number of the product together with the order number and the
supplier’s invoice number. Retain all packing material for inspection.
Do not use the equipment if it is damaged.
If the equipment is not used immediately, replace the protective covers. Store the
equipment in suitable conditions.
☞ Read and obey this manual before installing or operating the equipment.
☞ For operation valves and/or vacuum pumps are necessary.
Use the equipment for the intended use only (for generation and measurement of
vacuum).
☞ Obey notes on correct vacuum and electrical connections.
☞ Make sure that the individual components are only connected, combined and oper-
ated according to their design and as indicated in the instructions for use.
page 4 of 35
Obey national safety regulations and safety requirements concerning the use of
vacuum and electrical equipment.
☞ Equipment must be connected only to a suitable fused and protected electrical
supply and a suitable earth point. Failure to connect the pumping unit to ground
may result in deadly electrical shock.
☞ Check that mains voltage and current conform with the equipment (see rating plate).
☞ Make sure ventilation is adequate if the controller is installed in a housing or if the
ambient temperature is elevated.
To the best of our knowledge the equipment is in compliance with the requirements of
the applicable EC-directives and harmonized standards (see “Declaration of conformity”) with regard to design, type and model, especially directive IEC 1010. This directive
gives in detail conditions, under which the equipment can be operated safely (see also
IP degree of protection).
☞ Adopt suitable measures in case of differences, e. g. using the equipment outdoors,
installation in altitudes of more than 1000 m above mean sea level, conductive
pollution or dewiness.
The devices are not suitable for applications which involve dangerous or explosive
gases or explosive or flammable mixtures. Ensure that the materials of the wetted
parts are compatible with the pumped substances, see section “Technical data”.
☞ Adopt suitable measures to prevent the release of dangerous, explosive, corrosive
or polluting fluids.
☞ In case of residues, aggressive or condensable media install a gas washing bottle,
if necessary.
☞ Position the device and the vacuum line in a way that condensate can not reach the
pressure transducer.
☞ If necessary connect inert gas for venting.
Max. permitted pressure: 2 bar (absolute).
☞ At pressures higher than 1060 mbar the display flashes. Error message ”p Er-
ror” appears, four beeps.
➨ Immediate pressure relief necessary! Risk of bursting!
Attention: At pressures above 1100 mbar the device does no longer display the cor-
rect pressure values (pressure transducer saturated).
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
page 5 of 35
The controller is equipped with a short circuit proof wide-range power supply with
integrated overload protection.
☞ Failure of the device (e. g. by power failure) or of connected components must not
lead to a critical dangerous situation under any circumstances.
Electronic equipment is never 100% fail-safe. This may lead to an ill-defined status of
the equipment or of other connected devices. Provide protective measures against
misfunction and failure. Ensure that in case of failure the controller and the vacuum
system always will turn into a safe status.
Attention: If Auto-Start (Auto-St.) is preselected, the process starts immediately
after switching on the controller without pressing any further key. It is the user’s responsibility to ensure that no dangerous status of the system due to the automatic startup
of the pump,e.g. after a power failure, can occur and to provide appropriate safety
measures. If necessary, the user has to check prior to using the equipment if the
option ”Auto-Start” is enabled.
Use only genuine spare parts and accessories.
☞ Otherwise safety and performance of the equipment as well as the electromagnetic
compatibility of the equipment might be reduced.
Ensure that maintenance is done only by suitably trained and supervised technicians.
Ensure that the maintenance technician is familiar with the safety procedures which
relate to the product processed by the vacuum system and that the equipment, if
necessary, is appropriately decontaminated before starting maintenance.
Obey local and national safety regulations.
Before starting maintenance vent the system, isolate the vacuum controller from the
vacuum system and the electrical supply.
Wait two minutes after isolating the equipment from mains to allow the capacitors to
discharge.
Attention: Due to the operation the device might be contaminated by harmful or dangerous substances.
Interior components of the controller can only be repaired at the factory.
In order to comply with law (occupational, health and safety regulations, safety at work
law and regulations for environmental protection) vacuum pumps, components and
measuring instruments returned to the manufacturer can be repaired only when certain
procedures (see section “Notes on return to the factory“) are followed.
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
Technical data
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page 6 of 35
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We reserve the right for technical modifications without prior notice!
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
page 7 of 35
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We reserve the right for technical modifications without prior notice!
Accessoires:
Isolation valve VV 6C 24 V= ...................................................................................................... 67 40 91
Isolation valve VV 15C, 24 V=, DN 16 ......................................................................................... 67 41 10
Isolation valve VV 15C 24 V=, DN 25 ......................................................................................... 67 41 15
Isolation valve VV 25, 230 V, DN 25 ............................................................................................ 67 41 05
Cooling water valve 24 V= ........................................................................................................... 67 60 13
VARIO adapter cable .................................................................................................................. 63 71 76
Cable RS 232C nine-pole Sub-D ..................................................................................................63 78 37
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
Description
After the connection of components the controller can be operated in different basic
modes, see ”Basic modes and menu structure”.
When switching on the controller, the current basic mode and the number of version
are displayed for 2s.
page 8 of 35
Display and keys
Display
In menus
line1: caption
line 2: menu item
In submenus (only setting of RS 232C)
line 1: menu item (RS 232)
line 2: submenu
After selection of menu item
line 1: menu item (or submenu)
line 2: value to be set
In program
line 1: pressure
line 2: status message
mains switch
key ”Esc”:
- go to previous level of program
(operation menu)
- interruption of operation (reset to
previous settings)
- stop of control
key ”up”
- select menu
- previous menu item
- increase value
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
key ”Enter”
- start of control
- next step in menu setting
- adopt set value and quit menu
key ”down”
- select menu
- next menu item
- decrease value
Controller VNC 1, built-in version
bores for screws M4
73,5 mm
page 9 of 35
Built-in version for vertical installation
bores for screws M4
78,0 mm
78,0 mm
73,5 mm
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
page 10 of 35
Built-in version with front panel (120 x 240 mm)
and solenoid operated isolation valve
The controller VNC 1 is equipped with a non return valve underneath the blind cap. If the connection to
the pump is vented, the non return valve prevents interference with the system and the pressure
transducer. Check the non return valve regularly and clean or replace if necessary (Cat.-no. 63 88 36).
blind cap
solenoid operated
isolation valve
towards vacuum application
Bores in front panel: ø 6,5 mm;
distance between bores: 100 mm and 220 mm (long side)
towards pump
Built-in version with front panel (120 x 240 mm)
and adjustable elbow fitting for hose connection NW 10/8
adjustable elbow fitting
for hose connection NW 10/8
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
Connections
page 11 of 35
vacuum connection
hose nozzle NW 10/6
8-pin socket for connection of
cooling water valve or isolation valve
or speed control signal (PWM)
serial interface
RS 232 C
cover
fuse switch output
connection mains cable
socket for connection of
pump or valve according
to voltage supply
(switch output)
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999118 / 16/12/2009
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