M.HIST.0138.23 R1 Page 5 of 28 October, 06
th
2020
2.1.
Main Features
The main features of the new NEG POWER MINI are the following:
- activation/conditioning/working for NEG pumps
- adjustable DC voltage output
- pump temperature monitoring
- very simple use by local control
- remote control via RS232 interface with Modbus protocol (RTU)
- remote control via TCP/IP network interface with Modbus protocol (TCP)
- 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.
2.2.
Electronic circuit features
NEG POWER MINI
is a switching power supply, with an adjustable voltage output from 0 to 35V.
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 front side has an alphanumeric display and 4 buttons that allow a user to interact.
The unit has, on the back, the instrument input for mains power supply IEC 10A plug with fuse, an
ON/OFF button to turn on/off the instrument, one OUTPUT pump connector, a fan, IN/OUT
interface connector with INTERLOCK contacts and RS232 serial interface, LAN connector for
remote control by standard network interface and the USB data interface (only for USB flash
memory logging).
External interlock alarm (alarm condition generated by the user’s vacuum system) is present, or the
provided bypassing DB9 connector can be used (have to be connect in the IN/OUT interface
connector).
If the getter pump is equipped with a thermocouple,
NEG POWER MINI
shows its temperature on
the display.
2.3.
Remote and multi Control
Dedicated software is provided to remotely control the NEG POWER MINI through the Ethernet
connection. The software allows controlling several NEG POWER MINI units at the same time.
All functions and parameters can be easily controlled through the software.
Software allows controlling a single unit or more units at the same time.
Local and remote control are possible contemporarily.
This software is available for Windows and for Linux PCs.
The communication protocol via Ethernet and RS232 is MODBUS (TCP and RTU) (for more details
see the dedicated paragraph).
