MKS SG 1024 Specification sheet

SOLID STATE MICROWAVE GENERATOR
1000 W @ 2450 MHZ
TECHNICAL NOTE
(issue: April 2017)
SG 1024

(Cover Rear)

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 1 of 16
PM 250
SG 1024
CE Declaration of Conformity
Dichiarazione di Conformità CE
Manufacturer’s Name: Mks Instruments Italy s.r.l
Nome del Costruttore:
Manufacturer’s Address: Via Curie, 8 - 42122 Reggio Emilia - Italy
Indirizzo del Costruttore:
Declare that the microwave generator:
Dichiara che il Prodotto:
product name: SG 1024 Microwave Generator
nome del prodotto SG1024 Generatore di microonde
model: SG1024E.xxx2, SG1024E.xxx1
The product described above is in conformity with the provision of the following European Directives:
Il prodotto sopra descritto è in conformità con le seguenti Direttive Europee:
2014/35/UE Harmonization of the laws of the member States relating to electrical equipment designed for use within
certain voltage limits
Riavvicinamento delle legislazioni degli Stati membri relative al materiale elettrico destinato ad essere
adoperato entro taluni limiti di tensione
2014/30/UE Harmonization of the laws of the member States relating to electromagnetic compatibility
Riavvicinamento delle legislazioni degli Stati membri relative alla compatibilità elettromagnetica
Conformity to the Directives is assured through the application of the following standards:
La conformità alle Direttve è assicurata tramite l’applicazione dei seguenti standards:
Reference number Edition Description
Numero di riferim Edizione Descrizione
EN61010-1 2011-03 Safety requirements for electrical equipment for measurement, control and laboratory use
Prescrizioni di sicurezza per apparecchi elettrici di misura, controllo e per uso in laboratorio
EN61000-6-4 2007-11 Electromagnetic compatibility - Generic emission standard, industrial environment
Compatibilità elettromagnetica - Norma generica sull’emissione, ambiente industriale
EN61000-6-2 2006-10 Electromagnetic compatibility - Generic immunity standard, industrial environment
Compatibilità elettromagnetica - Norma generica sull’immunità, ambiente industriale
EN61000-4-3 2007-04 Electromagnetic compatibility - Testing & measuring technique: RF immunity test
Compatibilità elettromagnetica - Tecnica di prova e misura: immunità ai campi irradiati
EN61000-4-6 2006-10 Electromagnetic comp. - Testing & measuring technique: immunity to conducted disturbance
Compatibilità elettromagnetica - Tecnica di prova e misura: immunità disturbi condotti RF
Reggio Emilia, April 2017
Marco Garuti - Gen Manager

page 2 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
Policy about Reduction on Hazardous Substances (RoHS) and Waste Electrical and Electronic Equipment
(WEEE)
Law Reference
• Directive 2012/19/EU of European Parliament (WEEE)
• Decreto Legislativo D.L. n. 49 – 14/03/2014 (WEEE)
• Directive 2011/65/EU of European Parliament (RoHS)
• Decreto Legislativo D.L. n. 27 – 4/03/2014 (RoHS)
Risk Assessment on RoHS
SG1024 Microwave Generator is RoHS compliant.
Important information to User about disposal, recycling, reuse of this electronic equipment at the end of its
useful life (WEEE Directive).
According to Directive 2012/19/EU this equipment is not included on the list of categories/products covered by the Directive (as
a matter of fact it does not perform a function alone, must be included into a larger process equipment and it’s for stationary use).
Nevertheless we invite the User to respect the following Directive rules:
• this WEEE is not a municipal waste and should be collected separately according to rules of your country
• the symbol means that this WEEE cannot be disposal in the same place and in the same way like municipal waste
• this WEEE may present risk for environment as well as for person in case of disposal in unauthorized place, due to
content of hazardous substances
• fordisposalofthisWEEEinunauthorizedareatheUsermaybechargedwithaneorprosecutedbylaw.
Rev. Revision note Date File
Draft internal reference November 2015 SG1024_draft
0 First emission September 2016 SG1024_r0
1 Updated norms & RoHS compliance. 1 kW full scale power. April 2017 SG1024_r1

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 3 of 16
PM 250
SG 1024
Contents
A
Alarm troubleshooting 15
B
Bit alarm table 7
C
CE Declaration 1
Components layout 14
Components List 14
Conn.# 1 wiring 11
Conn.# 2 wiring 12
Conn.# 3 accessories 11
Conn. Fielbus 13
E
Environmental conditions 6
Equipment installation 5
Equipment ratings 5
F
Firmware upgrade 8
G
General description 4
General informations 3
H
Handling instructions 5
Handling warnings 4
How to order 16
M
Manual Commands 9
Meaning of external commands 7
Monitor signals 12
P
Physical characteristics 6
Physical dimensions 13
Power-up procedure 6
R
RoHS conformity 2
S
Software description 9, 10
T
Technical assistance 16
W
Warnings 3
Wiring instructions 6
Working modes 7
General Informations
ThisequipmentsatisestheEuropeanStandardEN61010-1
With reference to EN 61010-1 standard, note:
thisappliancemustbeinstalledandservicedonlybyqualied
personnel.
The appliance must only be used by persons acquainted with
the regulations covering the application.
Theequipmentdescribedinthismanualhasbeenclassiedas
industrial,scienticandmedical(ISM)radio-frequencyequip-
ment and the related standard for the Electromagnetic distur-
banceistheEN55011(Industrialscienticandmedical(ISM)
radio-frequency equipment - Electromagnetic disturbance
characteristics - Limits and methods of measurement.)
With reference to Basic Standard EN55011, this equipment
is included into Group 2 (Microwave generators, Thyristor
command equipment, Welding equipment, Induction heating
equipment or machine, Microwave industrial oven, etc.), Class
A (industrial environment): for this reason this equipment shall
not be used in the residential, commercial and light-industrial
environment.
The SG 1024, when properly installed, complies with the
limits of radio disturbance characteristic of a Group2, Class A
equipments as stated by EN55011.
WARNINGS & SAFETY RULES
The SG1024 is powered by main line: read this manual
carefully before using. Be sure of correct connections and
use.
The SG 1024 is a microwave generator producing near
1000 W at 2.45 GHz at its output on a coaxial socket.
People must not be exposed to microwave energy which
may be given off by the output socket for improper use
or misconnection.All microwave connections, couplings,

NEVER operate the generator without the connection
to a cavity, NEVER operate it without a load to absorb
microwave energy.
Failure to comply with the instructions enclosed in this
manual may involve considerable risks for the staff respon-
sible for checking and using the equipment, as well as the
risk of general malfunctions of the equipment itself.

page 4 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
Handling Warnings
The SG 1024 has two handles on the front panel to help
unpacking and handling operations: never use only the
handles to lift the equipment but support the weight with
an appropriate base on bottom!
The handles do not withstand the off-center weight of the
equipment ( kg 22.5= 49.5 lbs).
General Description
The SG1024 is a solid state generator able to provide up to
1000 W at the frequency of 2450 MHZ (2.45 GHz) and is
powered through a wide input AC/DC power supply with
input range from 180 to 250 Vac, including PFC module.
The output power can be adjusted continuously, from 2%
up to 100%, using an external analog signal from 0.2 to
10Vdc,orbyremotecontrolthrougheldbusinterfaceorby
manual commands (depending from equipment version: see
next table).
The generator offers the capability to adjust the output
frequency over a total range of +/- 50 MHz with respect the
nominal frequency of 2450 MHz, with step 1 MHz.
The SG1024 is built in a water cooled 19” wide rack, 2 HE
high, with a front panel including a graphic display: the rear
panelcarriesconnectorsforaneasyset-upandwaterttings
of the quick-coupling type.
The SG 1024 is offered in two versions:
- the “Display” version with front panel manual commands
and PLC interface to control by I/O: it carries also one USB
standard port, which allows to drive/read data from the unit
with a simple software (like our “Front Panel” software distri-
buted freely).
- the “Bus” version (vers. 1) which has an industrial
bus interface Powerlink or Modbus/TCP allowing
connection of multiple devices on the same bus.
SG 1024 Versions Overview
MODELABBREV. BUS DISPLAY
Version no. 1 2
External Control (PLC) possible possible
LED Panel Indicators n.a. n.a.
Local Commands (Manual) possible 
Graphic Interface  
Network Control n.a.
USB Control (possible, not a default set-
ting) n.a. 
Frequency control (ISM band range)  
Front and Rear Panel Layout
(In the following descriptions the numbers in brackets [ n ] refer to
numbers in the annexed drawing).
The front panel of version 2 “Display” contains:
- Main Switch 0-1 [1]
- the User interface: Graphic Display, three push-buttons [2]
and a rotaing knob [3]
ESC allows moving from one page to another,
TAB (the button with the arrow) to scroll down the selection,
ENTERtoconrmtheselection.
Knob allows to modify a value when this is enabled.
- a standard USB port [4]
For a detailed description see the chapter “Manual Com-
mands” on next pages.
The manual commands are active only when the related
option is enabled: if it is not selected, then the unit can run
only with External commands.
2
4
3
8
1
Front
View
Rear
View
975
6
10
11

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 5 of 16
PM 250
SG 1024
The rear panel comprises the followings:
- two fuse sockets (F1) [4]
- 3 pins socket for line input (CONN #1, male) [5]
- water connector quick-lock IN [6] and OUT
- 25 pins “D” socket for I/O signals (CONN #2, female) [7]
- a 7/16 Socket for RF output (CONN #3, female) [8]
- a standard USB port [9]
-adoubleRJ45socketforeldbusversion(enabledonlyon
Vers.1) [10]
- the BUS address switches (enabled only on Version 1) [11]
Equipment installation
The equipment cannot operate cantilevered, it must be put on
abenchorxedinsideacabinetbymeansofscrewsonthe
front panel (which is provided with 4 holes) and supported by
means of a proper frame on the bottom for, at least, 3/4 of the
total depth.
Handling instructions
The equipment weight is 22.5 kg (49.5 lbs). Always lift from
the bottom and use a rugged support to avoid personal injury
and damage to equipment itself.
In case of shipping, package with the original package or use
SG 1024 Ratings & Specications
Description Units Value Function Note
Line input range
Input Current, max: Vac
Arms
180 ÷ 250
12 Power input, 50/60Hz @230V input, full power CONN #1, pin 1-2, ground pin 3 See wiring schematic
Transient Overvoltage Cat. II According IEC 664
Output power, max Wrf 1000 Microwave power, range 2400-
2500 MHz ± 3% in matched condition ± 10% in unmatched condition
Electrical efciency (Out/In) Ref. 100% 36% Ref. 50% --> efciency 26%
Output power range: Wrf 50 ÷ 1000 Adjustable range 2÷100% Max value differs at frequency band
limit
Output linearity: Wrf ± 20 Forward power (Displayed value vs
monitor signal)
Output stability: 1% For input uctuations within ±10%
Output frequency, nominal:
range: MHz MHz 2450 ±50 ISM band 2400÷2500 Adjustable by user, step = 1 MHz
Enabling signal, digital input: Vdc +24
Range 8÷30 ON/OFF output & alarm reset Input Z: 10 kOhm CONN #2, pin 4. To reset alarm hold OFF for 2 seconds
Response time to full power (0-100%):
Response time to half power (0-50%): msec 10 5Pulsing capability Time calculated on the external Enable signal
Response time to switch OFF: msec 1 Using Enabling signal
Switch OFF time for alarm msec 3 Automatic shut-off
Reference signal, analog input: Vdc 0.2÷10 Power control 2÷100% CONN #2, pin 5. Ground pin 18
Input Z=50 kOhm
Alarm contact, general:
Contact rating: max voltage
max current: V mA 30 500
OPEN: Alarm state or powe OFF
CLOSED: OK CONN #2, pin 1-4
Alarm code, 4 bit contacts (0/1)
Contact rating: max voltage
max current V mA 30 100
Inform type of alarm with emis-
sion of 4 bit code
See relevant table
CONN #2, pin 8-21-9-22 (bit 0...3)
Common pin 13
Ready contact rating: max voltage
max current V mA 30 500 CLOSED when is ready OPEN not ready or Alarm state CONN #2, pin 24-12
Interlock input: Vdc 24 0: Alarm, shut OFF outputs.
+24V: OK CONN #2, pin 10-23
Monitor signals, analog outputs (2): Vdc 0÷10 TBD CONN #2, pin 2-15 (1); pin 3-16 (2)
Designed for receiver impedance
>30 kOhm (for accuracy <1%)
Voltage output (internal generator) Vdc +24 Auxiliary voltage generator, regu-
lated, for user interface CONN #2, pin 20. Max current: 100 mA

page 6 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
Environmental & Physical Characteristics:
Use: Indoor use only, within industrial en-
closure
Working temperature range 5÷40°C [41÷104°F], Min-Max ambient
temperature
Altitude design criteria: for altitude up to 2.000 m
Working Humidity range 80% RH up to 31°C [88°F], decreasing
linearly to 50% RH at 40°C [104°F]
Water cooling requirement: Flow: 2 lt/minute (minimum)
Temp. (IN): max 30°C, min 15°C not
condensing!
Pressure: 3 bar @ 2 lt/minute
Pressure drop IN/OUT: TBD
Water quality: Clean, particle <50um,
electrical resistance > 20 kOhm-cm,
hardness below 6 °dH (=10.7 °f =
107 ppm)
Pollution degree: 2, complies with IEC 664
Total Weight: kg 22.5 [ 49.5 lbs)
Rack Dimensions,
Panel Width:
Panel Heigth:
Length (Depth):
mm 480 [19”]
mm 90 [12.2 “ - 2HE/U]
mm 532
the I/O signals to the equipment. We suggest a shiel-
ded ribbon cable. Refer to wiring diagram at page 12.
V) The CONN# 10 is present only in version 1. The
type of socket is RJ 45.
VI) The USB on rear panel is a standard serial port,
that can be used to upgrade the software from a PC, or
to retrive internal data through FrontPanel GUI. Look
the pin-out at page 12.
VII) The user must provide external cut-off device, to
protect the SG 1024 from short-circuit and thermal
runaway; this external protection device must also
switch-off the main line for maintenance operations.
VIII) The external circuit breaker must be a 2-pole
current limiter breaker and must comply the norm
EN61010-1.
IX) The external circuit breaker must be in close
proximity of the equipment and within easy reach of
the operator.
X) The external circuit breaker must be marked as the
disconnecting device for the SG 1024.
XI) The connector #1 must never be used as a switch-
off device.
Failure to comply with these instructions may
involve considerable risks for the staff responsible
for checking and using the equipment, as well as
the risk of general malfunctions of the equipment itself.
Equipment operation
Power-up procedure
Before powering-up the equipment, double check to have pro-
perly connected it, (look at the chapter “Wiring Instruction”
for any doubt) then power on the unit through your external
contactor.
Once switched OFF wait at least two seconds before setting it
ON again.
The OFF state, between two consecutive ON state, must last
two seconds minimum.
The following description is valid for any versions, but with
the “Display” version the user will be updated of status
through the display messages.
At power on the unit enters into a “BOOTLOADER” state for
fewsecondstoallowrmwareupgrade,thenitgoesimmedia-
tely into “READY”.
In order to produce microwave and enter in “MW-ON”, the
Enable signal has to be set ON and then the reference signal
has to be set beyond the threshold of 1% (> 0.1 V): both
signals are available through the “D-SUB” CONN #2.
If any alarm is present, the unit remains in Alarm state until
the alarm is removed.
The reset of the Alarm should be made setting the Enable
command OFF for two seconds.
In absence of alarms the power supply may be left in “Ready”
continuously: when it receives the enabling command (ON) it
awoodencaseandaproperller:movementoftheequipment
inside the package must be avoided.
Warning for handling: use handles only for help during
installation. Never use handles to lift the rack: the handles
don’t withstand the off-center weight of the rack!
To lift always lean the rack over a proper supporting base.
Wiring instructions
The SG 1024 must be installed and serviced only by quali-
edpersonnelacquaintedwiththeregulationscoveringthe
application. For safety operations the following rules must be
adopted:
I) The equipment must be grounded through the connector
#1 using pin 3 (see the wiring diagram at page 10).
II) The main supply must be provided through connector #1:
connect phases according to schematic at page 10, the con-
nector’s pins can house wires with gauge up to 4 mm².
Warning: this connector is not intended for live insertion
of the unit: an external breaker must always be provi-
ded, and the unit must be switched off before inserting/
unplugging of the connector.
III) The connector #3 is a standard, coax 7/16 socket
(female): use a proper coax cable to carry microwave
energy to your load (cavity).
-
tion, connector adaptors, and a transition coax to wave-
guide (WR 340 or 284 size).
IV) The “D” type female connector #2 has 25 pins and brings

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 7 of 16
PM 250
SG 1024
enters into “MW-ON” state and generates output power, when
the enabling command is removed (OFF) the unit comes back
to “READY” state.
Working Modes
The behavior of the SG 1024 depends on its “working status”:
it has several statuses with different meaning and functiona-
lity.Thelogicowofthesestatusesisshowedonthenext
whentheunitisswitchedon,duringthersttwo
seconds, the unit runs the bootloader, waiting for any serial
rmwareupdatedata.Afterthat,iftherearenotalarms,the
unit goes in Ready status, otherwise it goes in Alarm status if
an alarm is present. It is a temporary status at Power On.
 it’s a waiting state. The unit waits for the enabling
command to generate microwave.
The unit may last in this state as long as needed: it exits auto-
matically in case of alarm. It goes to next “MW-ON” status
when the enabling command is set ON and the reference
signal is > 1%
 starts microwave emission at the presetted power
level.
The unit exits from this mode in case of:
* the enabling command is set OFF: enters into Ready state,
or
* the reference signal goes below the 1%: enters into Ready
state,
or
* ALARM presence: the unit goes to Alarm status
 when an alarm condition is present the unit will
remain in this status. The RF output is set OFF.
RESET of Alarm: to exit from Alarm the Enabling command
must be set OFF for 2 seconds and the alarm condition should
be removed.
See Alarm Troubleshooting table at page 15 for the complete
alarm list and relative codes.
Note*: the last alarm occured is permanently stored
by the CPU , even in absence of main line, and can
be veried using the Front Panel software
The alarms are also coded with a number that is emitted on the
4 bit outputs provided on CONN #5 (see the relevant schema-
tic at page 12).
The following is the table with the indication of the codes.
Meaning of external commands.
LINE BREAKER 0-1: in pos. 1 the unit goes in POWER ON.
The line switch can be freely switched off at any time.
POWER SET: it’s an analog input value and has the meaning
of “desired percent” of the full output power (1000 W)
When this value is lower than 0.2 Vdc the unit does not gene-
rate any output power, when over that threshold it generates
microwave power proportional to this signal value (at the
condition Enable signal is ON).
The scaling is 100W/V. It can be controlled:
- by the knob located in the front panel during the manual
mode;
- via usb serial connector, with the dedicated software, in
remote mode;
-viaeldbusmoduleinremotemode(forSG1024vers.1
only);
- by an analog signal (0-10Vdc) on CONN #2 pin 5 (+), pin
18 (ground), using as voltage source pin 7 (+10 V)
Description BIT 3
[22] BIT 2 [ 9] BIT 1 [21] BIT 0 [ 8]
No Alarm 0000
Overtemperature Alarm 0001
Reverse Power Alarm 0010
RF input signal (PLL) Alarm 0011
AC/DC Power Supply Alarm 0100
Overcurrent MOS stage 0 1 0 1
not imlemented 0 1 1 0
not implemented 0 1 1 1
not implemented 1 0 0 0
Interlock Alarm 1001
Driver Alarm 1010
Communication interrupted Alarm 1011
not implemented 1 1 0 0
not implemented 1 1 0 1
not implemented 1 1 0 1
not implemented 1 1 0 1
Table of Alarm Codes

page 8 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
until the new program is stored, but be sure no enable signal is
active when upgrading.
TheupgradeofthermwareembeddedintheSG1024is
released as a “.zip” archive named “program_name.zip”.
Unpacking the .zip archive you generate:
- a directory named “program_name” containing the micro
code to be loaded,
- an executable program named “SendApplicationProgram.bat
”- and the loader “sRecLoad.exe”.
Once unpacked the .zip program
- enter in the folder “program_name”,
- switch-on the SG1024
- run whithin 2 seconds the program
“SendApplicationProgra-m.bat” (which launches
sRecLoad.exe application)
(This is the maximum time that the microprocessor bootloader
waits for new code to be loaded).
In case the program sRecLoad.exe sends data whithin 2
seconds, the microprocessor bootloader stores the new data
ontheinternalashmemory, installing the new release, and
automatically executes it when the download is done.
Software release
Release no.PSU version Note
1.00 v.2 “Display” Compatible with Front
Panel Vers. 7.50
2.10 v. 1 & 2 New CPU/ Enable Bus
comm/ Full scale 1 kW
POWER ENABLE: it’s a digital input located on pin 4 CONN
# 2, has value ON/OFF. It must be ON to go in MW-ON
status and generate microwave energy. It can be set OFF at
any time.
OPERATING FREQUENCY:it is a control parameter. It can
be set automatically if the Automatic Tuning is enabled, or
manually otherwise. If the Automatic Tuning is disabled the
frequency can be set
- through the display in manual mode, or
-viasoftwarethroughtheUSBserialportortheeldbus
module (the latter option only for SG 524 vers. 1). It can not
be set in external mode using a signal.
AUTOMATIC TUNING: is a feature of the unit based on a
patented algorithm (US patent 6,020,794).
Due to the possibility to change the operating frequency,
the user can tune his system choosing between two modes.
The automatic tuning can be enabled either by the display
in manual mode or via software in remote mode. Once the
automatic tune is enabled the software performs the algorithm
when the unit goes in MW-ON status and it runs until a status
changing occurs. The goal of this function is to perform a real
time tuning of the load even if it changes continuously.
REVERSE POWER ALARM THRESHOLD: Threshold can
besetbytheuserinordertolimitthereectedpower.This
threshold can be set freely by the user, depending on the pro-
cessrequirement.Theunitcanbearatotalreectioncondition
for a maximum time of 1 second. It can be set through display
command(andviaeldbusforvers.1)
INTERLOCK FUNCTION: managed by CONN#2 pin 10-23
It is an input that must be powered with signal 24V= OK. If
the signal si removed (= 0 V) an alarm is generated.
Firmware upgrade
The software stored on the CPU can be upgraded to a newer
version using the USB port on the unit, connected to a PC.
Important remark: at power-on, even if a software is already
stored, the microprocessor enters a “BOOTLOADER” status,
lasting 2 seconds, during which it is possible to overwrite,
through the serial USB port, the stored code.
If no new code is loaded within 2 seconds, the previously
stored one is run.
To upload a new program through the bootloader, simply
connect the SG 1024 USB port to the PC USB port.
ThersttimeyoumustinstalltheUSBdriverthroughWindows
Update. During this operation the unit has to be switched OFF.
OncethePCdetectsthedevicethermwareofSG1024can
be upgraded.
No external switch must be operated, and the unit does not start

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 9 of 16
PM 250
SG 1024
Manual commands (for vers. 2 “Display”)
The SG 1024 version 2 (Display version) can also be opera-
ted manually via the front panel commands. Some of the SG
1024’sparameterscanonlybemodiedthroughthepanel
commands.
The status of the equipment and all the relevant information
can be seen on the graphic display. The following layout
describes the various pages shown on the display, and their
logical link:
The user may adjust the various parameters, via three buttons
and a rotating knob on the front panel, as follows:
- ESC button: used to return back to previous page without
saving
- TAB (arrow) button: moves to the next page
- Enter button:conrmstheselectionhighlightedonthe
display. When in MW ON status (see next description) pres-
sing the Enter button stops the emission of microwaves and
returns the unit to READY mode (performs the same function
as removing the Enabling command)
- Adjust Knob: rotate to move the selection within the
displayed page or change the parameter(+/-)
Following is the explanation of the various pages. The number
enclosed in brackets [ ] refers to the small number associated
to names of pages in the previous layout.
[0,1]: At POWER ON the unit shows the Logo, its name and
software version for a moment and then enters into READY
state [2]. You can exit from this page in two ways:
- adjusting the power reference with the front panel knob,
or external/remote command, and going to MW ON [3] state.
(What you see on this page depends on what you have set on
the DISPLAY [5] page);
- by pressing the ESC button you can go to DISPLAY page.
Here you can decide what you want to see (which parameters)
when on MW ON page.
[2, 3, 4] These are the same READY, MW-ON, ALARM
modes as described in the previous chapter “Working Modes”.
[5] DISPLAY: on this
page you can decide
what type of parameter
is displayed in MW
ON mode. Selectable
parameters:
- the Reference signal
(0-100%)
- the Internal Unit Tem-
perature (°C detected
inside the unit)
- the Forward Power
(Wrf, detected at the
output, like in this plot)
- the Reverse Power (Wrf, detected at the output)
- the Frequency (MHz, set on “PARAM Frequency” [8])
- the REV/FWD ratio
- All the Parameters (see plot below)Tin and Tout are the
water temperature of
the cooling circuit,
detected at the input and
output respectively.
SPECIFICHE SOFTWARE PER SG1024 rev. 0

























SG1024 rev.1.00
ON xxx h RDY xxx h































PARAM
TUNING




PARAM











page 10 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
- ratio R/F greater than 10%
- ratio at point “B” smaller than 2% if compared to the maxi-
mum R/F ratio. If larger than 2% the algorithm may decide to
“converge” and stabilize the frequency around this point.
Therstfrequencyfromwhichtheautotuningstartsisthe
last frequency, set manually and at which the generator was
running before entering into autotune mode.
Thetimeittakesbythealgorithmtondthebestfrequency,
withthelowestR/Fgure,dependsonthedistancebetween
thecurrentandthenalfrequency,aswellasthecomplexity
of the R/F shape.
In the worst case it should not exceed 500 msec, but it may
take as little as a 50 msec or less.
To shorten the tuning time you may have to select manually a
frequencyclosertotheexpectednalfrequency(e.g.running
theautotunearsttimewiththepurposetogetthisinfofor
the next trial).
[10]PARAM Threshold
R/F: moving the front
panel knob, you can set
the threshold of the ratio
Rev Power/Forw Power
which has an effect on
the Automatic Frequency
Tuning, when this is enabled.
If the current R/F value is below the above “Threshold R/F”
the autotuning has no effect.
TheactualR/Fgureiscomputedevery200mseconds.We
suggesttosetanumberhigherthan10%.Withsmallergure,
and a cavity with low Q factor, the system may not be able to
reachaxedfrequency.
[11]PARAM Reverse Power Max: moving the front panel
knob, you can set the limit of the reverse power before the
alarm. The unit can bear
atotalreectioncondi-
tion for a certain time,
but be careful: in case
of heavy standing wave,
the generator may be
overloaded with the sum
of both forward and reverse power, and parts of the circuit on
thenalpowercombiner,aswellasthecoaxialsocketmaybe
damaged.
[6] INFO: this page shows
the last alarm that occured,
the software version the
generator is running, the
total working hours of
the unit in MW ON and
READY states.
[7] MODE: with the knob
you may select to run
the unit in MANUAL
or EXTERNAL or
REMOTE. In Manual
mode the output power
is adjusted using the
rotating knob on the panel, in EXTERNAL the power is con-
trolled only by reference signal 0-10V (to be supplied on the
signal connector) and in REMOTE the reference value is set
throughtheeldbusmodule.ConrmtheselectionwithEnter.
[8] PARAM Frequency:
on this page you can set
the operating frequency if
the manual tuning is set.
If automatic tuning is set
you will only be able to
visualize the frequency
value. You can also see a moving bar which refers to the ratio
between Reverse/Forward power (R/F xx%).
[9] PARAM Frequency
Tuning: moving the
front panel knob, you
can choose between the
Manual tuning mode and
the Automatic tuning
mode.
The term “Tuning” in this context is used on the searching
for a working frequency, within the permissible band from
2400 MHz to 2500 MHz, exhibiting the lowest ratio between
ReverseandForwardPowergures(Rev/Forworsimply
indicated as R/F).
Selecting Manual Tuning you will have the possibility to
change the frequency from the previous menu PARAM Fre-
quency [8].
WithAutomaticTuningthealgorithmimplementedwillnd
the best frequency out of the broad range of frequencies for
that cavity.
As an example see the next drawing, where a hypothetical R/F
curveisplotted:thealgorithmisabletondfrequencypoint
“A” a where the lowest R/F ratio is. It will stay there even if
point “B” also represents an optimal frequency, but not the
lowest, regardless of the starting frequency, which could be
anywhere on the spectrum.
The unique given conditions to reach point “A” are
A B
0
max
% R/F
10%
<2%
2.4 GHz 2.5 GHzf

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 11 of 16
PM 250
SG 1024
Connector # 1 wiring
Conn # 3: RF Coax Accessories
The 7/16 type female connector #3, installed on the rear panel, is the microwave output of the SG 524. To carry the microwave
energy from the generator to the cavity/applicator we may offer several accessories, including a coax cable with length on
request.
Pos. Description Part Number Note
1 7/16 M-F Right Angle Plug MWCOAX7/16L
2 Coax Cable 1/2” with 7/16 Plugs, l= 1m 441384810/1 Preferred size, other length on request, max 2 m
Coax Cable 7/8” with 7/16 Plugs, l= 1m 441384811/1 Other length on request, max 4 m
3 Transition 7/16 to WR340 MWR26-COAX7/16L Aluminum construction. Flange R26 style
Transition 7/16 to WR284 MWR32-COAX7/16L Aluminum construction. Flange R32 style
Notethatthetwocablesareonlysligthlyexibleandcanbepartiallyshaped.Thesecablearedesignedforstationaryinstallation
only, can not be used on a mobile set-up.
Coax cable
type Nominal size [inches] Attenuation dB/1 m @ 2450 MHz Avg Power @ 2.450 MHz Outer Diam Jacket mm [“] Min Bend Radius, multiple bends, mm [“]
RF5012 1/2 0.121 0.63 kW 13.8 [0.54] 125 [5]
RF5078 7/8 0.069 1.30 kW 27.5 [1.08] 254 [10]
1024

page 12 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
Connector # 2 wiring
MONITOR SIGNALS
On the “D” type fermale connector #2, installed on the rear panel of the PSU, there are two monitor signals, in the
range 0 - 10Vdc (pin 2 and pin 3, ground on pin 15 and 16 respectively)
Forward and Reverse Power Monitor CONN. #2 LOCATION
Forward Power Wrf : 1 Vmon= 100 W (TBD) Pin no. 2 (return on pin #15)
Reverse Power Wrf : 1 Vmon= 100 W (TBD) Pin no. 3 (return on pin #16)
Note: if you don’t use,
the interlock signal, you
must provide a jumper
connection between
10&23, as depicted on
schematic, or the unit will
remain in alarm condition
(INTERLOCK Alarm)

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 13 of 16
PM 250
SG 1024
Connector for eldbus
(vers. 1 only)
The connector RJ45 (two, for easy wiring of following
equipment) is enabled only on version “Fieldbus” (vers.
1).ThetypeofeldbuscanbePowerlinkorModbus/
TCP,shouldbespeciedattimeoforder,andisbasedon
an interface device named “AnyBus CompactCom” (*)
manufactured by HMS Industrial Network (**): for general
information consult http://www.anybus.com.
Forspecicdocumentontheprotocolandrelated
technical information search for product type “Anybus
CompactCom”.
RefertospecicdocumentationsavailableonHMSweb
site, Anybus Compact Com section, or ask our Application
Note for the protocol implemented.
Each SG 1024 generator must be associated to an address:
the two digital rotating switches must be used, the left
switch sets the tens, the right sets the units.
Depending from interface and protocol used, the
addressmaybesetbysoftwaretoo:refertothespecic
documentation. In this case the rotary switches should be
set with address “00”.
Note: if you don’t have, or don’t use, any external safety
contact, you must provide a jumper connection between
10&23, as depicted on schematic, or the unit will remain
in alarm condition (INTERLOCK Alarm)
Note:
* AnyBus logo, HMS logo, AnyBus CompactCom name are
register trademark of HMS Industrial Networks AB
** HMS Industrial Networks AB, Stationsgatan 37, 302 45
Halmstad Sweden
Address switches & connector layout
SG 1024 Overall Dimensions
(dimensions in mm)

page 14 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
Component list
Pos. Q.ty Description P/N Note
1 1 Main Inductor PFC 42FI518MPB/PFC
2 1 PFC Board 800000540
3 1 Line lter FLFN20602008
4 1 Fuse diam 6 x 32 mm, 16 A delayed FU6X32/16A
5 1 Input line connector MOCPC03/2060362
6 1 CPU Board 800000536/B
7 1 DC Power Supply Board 800000538
8 1 Display Board 800000537
9 1 Fan VE8414NGH
10 1 Line breaker with lever IGM22061192003M1
11 1 Lever
12 1 Solid state power amplier 1 kW 80SG10244
13 1 Heatsink bar 462772006
14 2 Fitting, quick-lock type, 1/4 male straight (CBI Staubli) PNCB1067151 Plug: PNCBI061810 (*)
Layout of main components
(view without PA and heatsink removed) (view with cover removed only)
14
Note: (*)matingplugforquick-lockttingmustbeorderedseparately

File: SG1024_r1eng - April 2017 -Technical note: SG 1024 page 15 of 16
PM 250
SG 1024
ALARM TROUBLESHOOTING *
Note*: the last alarm occured is permanently stored by the CPU, even in absence of main line, and
can be veried using the Front Panel software (vers. 7.50 and over)
Code Description Cause/Solution
0001 Overtemperature
Alarm
The temperature of the water at output exceeds the max temperature
presetted via the specic parameter (Tout > Tmax)
a) Check water ow
b) Verify correct setting of Tmax
0010 Reverse Power
Alarm
The reected power has reached the alarm threshold for a time longer
than 20 seconds. Set higher threshold or start the automatic tuning to
deacrese the reected power.
Full reverse power condition triggers the alarm in one second.
0011 RF Input
Malfunction (PLL)
Alarm linked to internal frequency generator: the generated driving
signal is out of expected value. The CPU turns off the power module
automatically. After the reset operation, the CPU turns on the power
module and checks possible alarms. If the alarm persist, contact the
service.
0100 AC/DC Power
Supply Alarm The internal power supply has an output < 10V or it exceeds of +/- 5%
the expected value after 4 seconds.
0101 Overcurrent Final
Amplier (M1-4)
The nal power amplier has reached the limit current. Try to reset and
restart at lower power. If the alarm persists, contact the service.
1001 Interlock Alarm Check interlock input (0V = Alarm, +24V= OK)
1010 Driver Alarm The current of the driver (pre-ampli) exceeds 10 A. Try to reset and
restart at lower power. If the alarm persists, contact the service.
1011 Communication
interrupted Alarm engaged only when the SG is run throught the USB port and no
valid character is received within time out

page 16 of 16 File: SG1024_r1eng -April 2017 - Technical note: SG 1024
PM 250
SG 1024 Solid State Microwave Generator
How to order
Solid State Microwave Generator: SG1024E.yyyjb, where:
yyy: contact yr mks representative upon
selection of the custom unit;
j(version code): vers. 0: n.a.
vers. 1: “Fieldbus”
vers. 2: “Display” & manual commands
b(eldbustype): MTCP: Modbus-TCP
PLNK: Powerlink
I.e.:
SG 1024E.MKS2 means generator Display version;
SG 1024E.MKS1MTCP means generator version with Modbus-TCP bus
interface
Accessories:
Plug set: p/n 44SET524
(contains plugs for Conn #1 and #5 only)
Coax Plug, right angle, 7/16 M-F: p/n MWCOAX7/16L
Coax cable, length 1 m, 1/2”: p/n 441384810/1M0
Coax cable, length 1 m, 7/8”: p/n 441384811/1M0
Cable set for input line and signals only: p/n 441384524
Waveguide to coax transition,
WR340to7/16,angeR26: p/nMWR26-COAX7/16L
WR284to7/16,angeR32: p/nMWR32-COAX7/16L
Quick-lock water connector: p/n PNCBI061810
(Staubli type: CBI 061810/IA/JV/CN)
MKS Alter reserves the right to improve or modify this products, at any
time, without obligation to notify any person or entity of such changes.
No part of this publication may be reproduced without the express writ-
ten consent of MKS
All rights reserved.
Technical Assistance:
MKS Alter Italy
42122 Reggio Emilia - ITALY
Tel: ++39 0522 553 820; fax ++39
0522 553 577
Web: www.altersystem.com