SCS Static Control Systems S.r.l. - 2 -
- ITALY -
www.scs.it - Verderio Inf. (LC) 23879 - via Piave n.84
Tel. +39-039.99956.1 Fax. +39-039.99956.30
The Company
SCS Static Control Systems has been successfully operating in the industrial automation field since 1977. In the beginning, the
company designed and manufactured static electrical controls for automated machines and systems and, starting in 1978, it began
designing and manufacturing analog converters for DC-powered motors. Thanks to its technical expertise, in 1986 SCS was chosen
by Mitsubishi Electric as the sole distributor for Italy. In 1994, the company began manufacturing analog drives for trapezoidal
brushless motors and in 1997, it designed and manufactured the first family of digital drives for sinusoidal brushless motors. In just
a few years, the sinusoidal vector converter became the company’s leading product and in 2005, a new generation of brushless
motor drives was launched to upgrade the control section of the motor. The recent release of third-generation brushless servo drives
crowns the 10 years evolution of the product line.
SCS operates in Italy and abroad currently offering a wide services portfolio. From analog and digital systems design, based on the
expertise of its R&D department, to system integration design and deliver, based on the experience and know-how of its Engineering
Department. The corporate mission is focused on quality, flexibility and the ability to assist the customer through all phases of
machine realisation. After-sales service and technical support have also always been a significant part of corporate policy and have
become well-known and appreciated by all operators in the industry.
The Research & Development Dept.
SCS’ pride is its R&D team, which designs innovative solutions to support the most demanding performance requirements of the
market. The company provides consulting and engineering services while continuously ensuring a complete product customization.
Qualified engineers always up-to-date to the latest technologies concerning development platforms, design the hardware and
software for our products while focusing on innovation and reliability. Digital solutions have been studied to facilitate the task of
machine design engineers and the most advanced tools have been used to simulate, debug and test new-generation DSP and FPGA
platforms. The daily exchange of information between the Technical Support and R&D department leads to continuous product
evolution, which not only allows the customer to make the most suitable technical choices, but also guides our company to identify
specifications for new product generations.
The Engineering Dept.
The significant experience gained by designing systems based on all state-of-the-art products on the market, has allowed SCS’
Engineering Department to ensure maximum reliability and expertise. Specifically, SCS is a SIEMENS Certified System Integrator,
thanks to 30 years of experience using specific products for the industrial automation industry. Our Engineering Department’s
hardware and software design engineers look for increasingly innovative solutions to simplify the commissioning and the
maintenance of the systems and to achieve increasingly high performance. Our technicians’ significant design experience allows
them to manage commissioning and start-up phases in a timely and safe manner.
The production
Every internal phase including production, assembly and testing is performed by qualified personnel under the supervision of highly
experienced managers. Thanks to close collaboration and co-design with our suppliers, the quality of our components is also
constantly under control, thus guaranteeing maximum product reliability. In fact, SCS products undergo rigorous static and
functional testing procedures, both for the Systems Division as well as for the Drives Division. Our personnel is continuously trained
and this contributes to spread inside the company the mission concepts such as quality assurance, proactive testing and specific
expertise regarding all production process phases. The R&D department provides technicians and testing operators, support
regarding all requests for personalisation or to successfully pass the commissioning phase. These are just a few reasons why SCS is
truly an ideal partner when it comes to positive, long-lasting collaboration based on significant technological value.
SCS has made its name in the sector over the years thanks to the excellent quality of its staff. Our staff has played an important
role in this growth through constant updates and professional improvements in order to respond to increasingly strict quality
standards, thereby making a vital contribution to the success of the company.
SCS Static Control Systems S.r.l. - 3 -
- ITALY -
www.scs.it - Verderio Inf. (LC) 23879 - via Piave n.84
Tel. +39-039.99956.1 Fax. +39-039.99956.30
INTRO
DC DRIVE PRODUCTS family offers to our customers a wide range of devices that
can be use in any DC Motor applications.
SCS designs and produces DC Drives since 1977 and can guarantee to its
customers a deep support in building successful solutions and fixing startup and
tuning phases.
If you need to go DC, SCS is the right partner for you.
SCS Static Control Systems S.r.l. - 4 -
- ITALY -
www.scs.it - Verderio Inf. (LC) 23879 - via Piave n.84
Tel. +39-039.99956.1 Fax. +39-039.99956.30
SUMMARY
FULL CONTROLLED
CT38
2/4 QUADRANT FULL CONTROLLED THREE-PHASE DRIVES FOR D.C. MOTORS – SERIES CT 6
CM38
4 QUADRANT FULL CONTROLLED SINGLE PHASE DRIVES FOR D.C. MOTORS – SERIES CM 9
CM220-TR
4 QUADRANT FULL CONTROLLED SINGLE PHASE DRIVES FOR D.C. MOTORS – SERIES CM 11
HALF CONTROLLED
CM22
HALF-CONTROLLED SINGLE PHASE CONVERTER 14
CM 220-9S
UNIDIRECTIONAL SINGLE-PHASE HALF-CONTROLLER CONVERTER OPERATIONS ON 1 QUADRANT 16
DC SERVO DRIVES
CH220 - CH22
UNIDIRECTIONAL MOSFET DRIVE 19
ST
EUROCARD E1 ST SERIES TRANSISTOR PWM SERVO AMPLIFIER FOR D.C. MOTORS 21
SM
EUROCARD E1 SERIES MOSFET PWM SERVO AMPLIFIERS FOR D.C. MOTORS 24
PHASE SHIFTERS
PM22
FULL-WAVE PHASE CONTROL CHARACTERISTICS 28
PS380
FULL-WAVE PHASE CONTROL CHARACTERISTICS 30
SCS Static Control Systems S.r.l. - 5 -
- ITALY -
www.scs.it - Verderio Inf. (LC) 23879 - via Piave n.84
Tel. +39-039.99956.1 Fax. +39-039.99956.30
CT38
2/4 QUADRANT FULL CONTROLLED THREE-PHASE DRIVES
CM38
4 QUADRANT FULL CONTROLLED SINGLE PHASE DRIVES
CM220-TR
4 QUADRANT FULL CONTROLLED SINGLE PHASE DRIVES
SCS Static Control Systems S.r.l. - 6 -
- ITALY -
www.scs.it - Verderio Inf. (LC) 23879 - via Piave n.84
Tel. +39-039.99956.1 Fax. +39-039.99956.30
CT38
2/4 QUADRANT FULL CONTROLLED THREE-PHASE DRIVES FOR D.C. MOTORS – SERIES CT
APPLICATIONS
Unidirectional and bidirectional drives for medium and large power d.c. motors.
Constant power and constant torque speed adjustment for spindles, CNC’s and
machine tools.
Processing lines for plastic and rubber materials, extruders, pinch roll trains,
winding machines, mixers, calenders.
Metal wire and sheet working machines, shears, reels, cutters, wire drawing
benches, spooling machines, stranding machines, rolling mills, forging machines,
flattening machines.
Paper product making and packaging machines, paper mills, packaging industries.
Printing machines, including silk-screen printing, offset, rotogravure and continuous
machines.
Voltage and/or current regulators for controlling processes, RL loads, galvanic
baths, electrophoresis.
MAIN FEATURES
Full standardization design philosophy.
Removable personalization board. Standard control boards without calibration.
Optimum power, size, performance and cost ratio.
Direct connection to mains with wide tolerance (± 20%) and random phase
sequence.
Very wide current range from 30A to 2700A; built-in voltage changes for mains
220, 380,440, 480 V ± 20%.
Galvanic isolation, also in armature feedback, with compensation
Rxl. Adjustable speed relay (0.5 to 120%). Thermal overload
prealarm relay (l2t). Electronic thermal images. Provision for
setting (1.5x In per 30 s.) and disabling overload. Commands for
controlling references and functions, with LED signalling handled
by the PLC or process controls. Analog current and speed
outputs. Differential proportional amplifier, configurable by the
user. Transmission outside of the status of the protective
devices, optically isolated parallel and serial. Standard built-in
protective devices (controls of mains and internal power supplies,
pulse suppression, solid-state and/or electromechanical fuse
alarm, overvoltages, tacho generator failure, field circuit
checking, overtemperature, external alarm available) all with LED
signalling.
1.1. GENERAL DESCRIPTION
The compact modular construction uses standard PC boards for
the entire range, with high level of integration of the components
mounted. Thanks to this it is possible to have a series with
practically all the most frequently used system auxiliary
functions.
Through external commands (contacts or PLC commands
signalled by LED’s), it is possible to have full control over the
switching of the reference signals, Forward/Reverse commands,
selection of inputs and use of the ramp. The Forward/Reverse of
the reference signals and JOG presettings are interlocked.
All protective devices are memorized individually.Moreover they
are signalled by LED's, with external communication in optically
isolated parallel form, or transmission in serial form.
The PC board is standard without adjustment.
The personalization and calibration board contains all the
adjustments and presettings with an amplifier which can be
configured as required.
A special thermal image calculation circuit allows both
overloading (3 to 30 s.) as well as boosted continuous service,
which is useful for current regulators in “pull mode” with unit
torque (torque controls).
In order to afford full protection to the drive, all fuses necessary
for the power section are installed internally (SCR bridge,
ventilation, field circuit, power supply).
The drive is built to IEC standards 146,146A,146.2,VDE110b, IEC
494-CT 22-2 and the ANIE recommendations. Components with
UL, CSA and VDE mark are used. There is provision for mounting
fuses to BS88 part 4-1976 and IEC 269 part 4 (standard) and
type XL-F and SF to UL standards (upon request). The drive is
rated for mains power supplies up to 500V±10%.
1.2. INTERNAL PROTECTIVE DEVICES