SAES NEG POWER User manual
M.HIST.0101.23 R2
January, 26th 2021
SAES Getters S.p.A. – Italy
www.saesgroup.com
USER MANUAL
NEG POWER
NEG Pump Controller
NEGPOWER
starting ...
* Copy Approved By DCM on 27/01/2021 * Uncontrolled copy when printed
M.HIST.0101.23 R2
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January, 26th 2021
The NEG POWER - NEG Pumps Controller power supply serves for operating the NEG (Non
Evaporable Getters) pumps. It is designed to be used indoor in laboratory conditions.
Security provisions
Symbols on the Manual
These symbols appear on the product:
CAUTION
Pay specific attention
to the section
WARNING
After transportation, the device has to be left idle without mains
voltage for at least 3 hours at the laboratory temperature.
WARNING
The use of the instrument for any other purpose than originally intended
may damage the instrument, injure the user and void all warranties.
ATTENTION
High voltage is present inside the instrument and also in the
connectors and cables, which may harmful to the user.
Manipulation of the cables and of the grounding wire is
prohibited while the appliance is in operation.
Likewise, the operation of the instrument without its
protective covers is prohibited.
Protect the device against humidity and against penetration of
conductive objects and liquids into the ventilation slots.
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January, 26th 2021
INDEX
1.APPLICATION.............................................................................................................4
2.INTRODUCTION.........................................................................................................4
2.1.General description........................................................................................................ 4
2.2.MAIN FEATURES .......................................................................................................... 5
2.3.Electronic circuit features ............................................................................................... 5
2.4.Output power modules ................................................................................................... 5
2.5.NEG POWER: the front panel of the unit ....................................................................... 6
2.6.NEG POWER: the rear panel of the unit........................................................................ 6
2.7.NEG POWER SMALL: the front panel of the unit........................................................... 7
2.8.NEG POWER SMALL: the rear panel of the unit ........................................................... 7
2.9.NEG POWER Dimensions and Weight.......................................................................... 8
2.10.NEG POWER SMALL Dimensions and Weight ............................................................. 8
3.INSTALLATION...........................................................................................................9
3.1.Rack mounting ............................................................................................................... 9
3.2.Electrical connections..................................................................................................... 9
3.3.Cleaning....................................................................................................................... 10
4.MODE OF OPERATION............................................................................................11
4.1.Power on ...................................................................................................................... 11
4.2.The General Menu ....................................................................................................... 11
4.3.The General Setup button............................................................................................ 12
4.4.The Setup Menu........................................................................................................... 15
4.5.The Limit Setup button ................................................................................................. 17
4.6.The SAVE and CANCEL buttons ................................................................................. 18
4.7.The START/STOP buttons........................................................................................... 18
4.8.The recommended settings.......................................................................................... 19
4.9.Heating (Activation/Conditioning) without stop............................................................. 20
4.10.Custom: a Generic Pump for Customer Settings ......................................................... 20
4.11.Alarms .......................................................................................................................... 21
4.12.Alarm history ................................................................................................................ 22
4.13.Information page .......................................................................................................... 22
5.THE OUTPUT CONNECTOR FUNCTION................................................................23
5.1.Pin layout of IN/OUT Interface connector..................................................................... 23
5.2.RS232 / RS485 Interface ............................................................................................ 23
6.Electrical Specifications.............................................................................................24
7.Summary Table of the NEG Pumps controlled by the NEG POWER........................25
8.PRODUCT CONFIGURATIONS AND ACCESSORIES............................................26
8.1.NEG POWER configurations and accessories:............................................................ 26
8.2.Pump cables and accessories:..................................................................................... 27
9.DECLARATION OF CE CONFORMITY....................................................................28
10.INSTRUCTION FOR INSTRUMENT DISPOSAL......................................................29
11.WARRANTY CONDITIONS ......................................................................................30
12.SERVICE...................................................................................................................31
12.1.Sales & Service Locations:........................................................................................... 31
APPENDIX A: Supply cables.............................................................................................32
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January, 26th 2021
1. APPLICATION
NEG POWER - NEG Pump Controller power supply is designed to operate the MK4 and MK5
NEG pumps series, namely GP SORB AC®, CapaciTorr®, CapaciTorr HV®and NEXTorr®families.
2. INTRODUCTION
2.1. General description
NEG POWER is an electronic unit specifically designed to control the heating and the activation
process of the getter pumps whether they are or aren’t equipped with a thermocouple.
There are two versions: NEG POWER for up to 4 controlled pumps, NEG POWER SMALL
supporting up to 2 pumps only.
NEG POWER can control up to 4 different getter pumps at the same time, with an adjustable DC
voltage output up to 110 V, current up to 10A, power up to 700W.
It has a touch screen display to control all the pumps together and in a very friendly way; it is also
possible to control the NEG POWER by the SAES remote control software.
NEG POWER SMALL is the smaller version of NEG POWER that can control up to 2 different
getter pumps.
Both versions can be equipped with standard 700 W modules or with low power 150 W modules.
(see paragraph 2.4).
The most popular SAES NEG pumps are preset in the software (like the GP SORB AC®, the
CapaciTorr®, CapaciTorr HV®and NEXTorr® families), so that in order to activate the NEG pump
just the pump model must be selected and START button pressed.
Other pumps, not included in the list of presets, can be managed by “custom settings” by choosing
suitable operating parameters.
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2.2. MAIN FEATURES
The main features of the new NEG POWER are the following:
- contemporary activation/conditioning up to 4 NEG pumps
- automatic recognition of the cable length
- local control by user friendly touch screen controller
- remote control by RS232/RS485 interface with Modbus protocol (RTU)
- remote control by TCP/IP network interface
- pump temperature monitoring and thermoregulation
- automatic power regulation for different pump configuration
- diagnostic features (open/short connection, broken thermocouple, broken heating filament,
overheating control, ...)
- pump temperature limiter: for pumps equipped with a thermocouple, a limit on the maximum
temperature can be set by limiting the maximum power.
- stand-by mode: if the instrument is not operated for long time, it switches to stand-by mode. In
this state, the power consumption of the instrument is reduced. The stand-by mode can be ended
by a touch on the display of the NEG POWER.
2.3. Electronic circuit features
NEG POWER is a switching power supply, with an adjustable voltage output from 0 to 110 V. The
instrument receives mains voltage (110÷240 VAC, 50÷60 Hz), converts it to DC voltage and
supplies the getter pump by means of a microprocessor-based electronic control card.
The unit has a ON/OFF button to turn on/off the instrument, a touch screen display that allows a
user to interact with it, and a LAN connector for remote control by standard network interface.
The unit has, on the back, four OUTPUT pump connectors, two fans, RS485 serial interface
connector, IN/OUT interface connector and the instrument input for mains power supply
(MAININPUT) IEC 16 A plug.
External interlock alarms (alarm condition generated by the user’s vacuum system) are present,
one for each current output (on IN/OUT interface connector).
If the getter pump is equipped with a thermocouple, NEG POWER shows its temperature on the
display.
2.4. Output power modules
NEG POWER can be equipped with two types of modules: standard and low power modules.
Standard power modules of 700 W are can be used to control SAES NEG pumps requiring higher
power during the activation.
Low power modules of 150 W can be also installed in the NEG POWER to work in the low range of
power with the smallest SAES NEG pumps requiring low values of power / voltage / current with a
precision around ± 0.1 V.
The two types of module can be mixed up in different slots in the same instrument.
Table of contents
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