CD Automation MULTIDRIVE-3PH Thyristor Unit User manual

MULTIDRIVE-3PH
Thyristor Unit
USER’S MANUAL
Rev. 06/2014
00006
from 35A to 850A
CD Automation
Tel: [phone]
Email: [email protected]
Web: www.cdautomation.co.uk/multidrive-3ph

SUMMARY
1 Important warnings for safety..................................................................................... 5
2 Introduction ................................................................................................................ 7
2.1 Advantages compared with analog thyristor unit 7
2.2 CD-KP 8
2.3 CD-EASY 8
2.4 Software Configurator 9
3 Quick Start ................................................................................................................ 10
4 MULTIDRIVE Sizing.................................................................................................... 11
5 Identification and Order Code.................................................................................... 12
5.1 Identification of the unit 12
5.2 Order Code 13
6 Installation ................................................................................................................ 14
6.1 Environmental installation conditions 14
6.2 Dimensions and Weight 15
6.3 Fixing holes 16
7 Wiring instructions .................................................................................................... 17
7.1 Removing the cover 17
7.2 Wiring details 17
7.3 Power Terminals 19
7.4 Command Terminals 20
7.5 Diagram of control connection 21
8 Power output features ............................................................................................... 22
8.1 Derating curve 22
8.2 Cooling fans 22
9 Led status and Alarms ............................................................................................... 23
9.1 LED Status Table 23
9.2 Critical Alarms 24
9.3 Not Critical Alarm 24
9.4 Calibration Procedure 25
10 Control Panel ........................................................................................................... 25
10.1 Scroll the parameters 26
10.2 Operator Menu 27

10.3 Hardware Menu 30
10.4 Setup Menu 35
11 Firing type ............................................................................................................... 37
11.1 Single Cycle (SC) 37
11.2 Burst Firing (BF) 39
11.3 Phase Angle (PA) 41
11.4 Delay Triggering (DT) 43
11.5 Action of the Limit Current 45
11.6 Feed-back type 46
12 Connection description ............................................................................................ 47
12.1 Access to the Electronic boards 47
12.2 Supply the Electronic Board PWI30 48
12.3 External Feed-Back 48
12.4 Analog Inputs 49
12.5 Analog Outputs 51
12.6 Digital Input 53
12.7 Digital Output 54
12.8 PG Connector 57
12.9 RS485 Serial Port 58
Internal Fuse................................................................................................................ 59
12.10 Fuse Code 59
13 Maintenance ............................................................................................................ 60
13.1 Fans 60
13.2 Maintenance 60
13.3 Repairing procedure 60
13.4 Warranty condition 60

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1Important warnings for safety
This chapter contains important information for the safety. The not observance of these instructions may
result in serious personal injury or death and can cause serious damages to the Thyristor unit and to the
components system included.
The installation should be performed by qualified persons.
The Thyristor unit are integral part of industrial equipments. When it is supply, the
Thyristor unit is subject to dangerous tensions.
Don't remove the protection Cover.
Don't use these unit in aerospace applications and/ or nuclear.
The nominal current corresponds to use at temperature not superior to 45°C.
The Thyristor unit must be mounted in vertical position and without obstruction above
and below to allow a good flow ventilation.
The hot air of one thyristor unit must not invest the unit positioned above.
For side by side placed leave a space of 15mm between the unit.
A suitable device must ensure that the unit can be electrically isolated from the supply, this
allows the qualified people to work in safety.
Protection (Protection, Protezione)
The unit have IP20 protection rating as defined by the specific international. Is necessary
consider the place of installation.
Earth (Terre, Messa a terra)
For safety, the Thyristor unit with isolated heat-sink must be connected to earth.
Earth impedance should be correspondent to local earth regulation. Periodically the earth
efficiency should be inspected.
Electronic supply (Alimentation électronique, Alimentazione elettronica)
The electronic circuit of the Thyristor unit must be supplied by dedicated voltage for all
electronic circuits and not in parallel with coil contactors, solenoids and other.
It's recommended to use a shielded transformer.
Electric Shock Hazard (Risque de choque électrique, Rischi di scosse elettriche)
When the Thyristor unit is energized, after the power supply is shut off, wait least a minute
for allow the discharge of the internal capacitors where there is a dangerous tension. Before
working, make sure that:
Only authorized personnel must perform maintenance, inspection, and replacement
operations.
The authorized personnel must read this manual before to have access to the unit.
Unqualified People don't perform jobs on the same unit or in the immediate vicinities.

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Important warnings (Attention, Avvertenze importanti)
During the operations with units under tension, local regulations regarding electrical
installation should be rigidly observed:
Respect the internal safety rules.
Don't bend components to maintain insulation distances.
Protect the units from high temperature humidity and vibrations.
Don't touch components to prevent electrostatic discharges on them.
Verify that the size is in line with real needs.
To measure voltage current etc. on unit, remove rings and other jewels from fingers
and hands.
Authorized personnel that work on thyristor unit under power supply voltage must be
on insulated board
This listing does not represent a complete enumeration of all necessary safety cautions.
Electromagnetic compatibility
(Compatibilità électromagnétique, Compatibilità elettromagnetica)
Our thyristor units have an excellent immunity to electromagnetic interferences if all
suggestions contained in this manual are respected. In respect to a good Engineering
practice, all inductive loads like solenoids contactor coils should have a filter in parallel.
Emissions (Emission, Emissioni)
All solid-state power controllers emit a certain amount of radio-frequency energy because of
the fast switching of the power devices.
The CD Automation’s Thyristor unit are in accord with the EMC norms, CE mark.
In most installations, near by electronic systems will experience no difficulty with
interference. If very sensitive electronic measuring equipment or low-frequency radio
receivers are to be used near the unit, some special precautions may be required. These
may include the installation of a line supply filter and the use of screened (shielded) output
cable to the load.
Note
Warning: This icon is present in all the operational procedures where the Improper
operation may result in serious personal injury or death
Caution: This icon is present in all the operational procedures where the Improper
operation can cause damage for the Thyristor unit.
CD Automation reserves the right to modify the own products and this manual without any
advise.
CUS
LISTED
UL
®

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2Introduction
A thyristor unit is semiconductor device which acts as a switch formed by two thyristors in ant parallel.
To switch on the alternating current the input signal will be on and the thyristor will switch off at first
Zero Crossing voltage with no input signal.
The benefits of thyristor units compared with elettromechanical contactors are numerouses: no moving
parts, no maintenance and capacity to switch very fast. Thyristors are the only solution to control
transformers and special loads that change resistance with temperature and with age.
2.1 Advantages compared with analog thyristor unit
MULTIDRIVE is an universal Thyristor unit, designed to control resistive or inductive loads including
three phase transformers. The electronic circuit is completely digital and is based on a powerful
microprocessor with high performance that allow the use in different ways:
Single cycle
Burst Firing with soft start and current limit
Delayed triggering
Phase Angle with soft start and current limit
On same unit can be used different feed back that define the control mode:
Voltage
Current
Power VxI
External 0÷10Vdc
On same unit can be used different input:
4÷20mA
0÷10Vdc
Potentiometer 10KΩ
SSR
Communication RS485 is a standard feature of MULTIDRIVE this allows the use of many information
like: tension, current, power, load state and all the parameters for diagnostic and configuration. Ulterior
advantages of the digital system vs the analogical is the flexibility and the possibility of implement
special characteristics without change the hardware. Several strategies can be implemented and
selected through the configuration parameters.
With CD-KP, you can have access to the configuration parameters without expose at the dangerous
voltage inside the cabinet and without stop the plant.

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2.2 CD-KP
The CD-KP is designed to be connected with all CD Automation's Thyristor units via RS485
communication. On front unit is possible to read the principal operational parameters of the unit like:
power, tension, current, reference, alarms, etc.
One of these variables can be selected and retransmitted via an isolated output (4÷20mA or 0÷10V)
All the menus (except the operator menu) can be protected by password to avoid accidental change of
configuration parameters by unauthorised personnel.
On front unit is also available a plug-in connector RS485 for connect a PC with the Thyristor units
without open the cabinet and without stop the production process.
Technical Specification:
Use in Local/Remote
Set Point Ramp UP - Down
Scroll selection of:
- Set point
- Power output
- Current
- Voltage
Display indication for:
- Heater Break alarm
- SCR short circuit
Password for configuration parameters
Plug-in connector on front to use software configurator
Retransmission (4-20mA or 0-10Vdc) of one of these
parameters: Power PV, Current, Voltage.
Dimension 48x96x92mm (LxAxP)
Comply with EMC, CE marked
2.3 CD-EASY
CD-EASY is a Memory of support used for maintenance people that is not confident in personal
computer.
With the CD-EASY is possible memorize the configuration of one Thyristor Unit and paste it into another
in few seconds.
CD-EASY could be loaded with the personal configuration of the unit and stored together with the
system drawings in a convenient place, enabling unit reconfiguration within seconds if require.

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2.4 Software Configurator
The software configuration is free and is possible
download it from our site:
www.cdautomation.com
If the Order Code is in line with requirement, then
MULTIDRIVE has been already configured in
Factory and it's ready to use.
You need the software only to modify the ordered
configuration. Anyway we suggest to check the
unit on the machine with the "Test unit" section.
For install the software, launch the program and
follow the instructions on the screen.
To connect the unit at the PC, it's necessary use
the programming cable connected between the PG
connector (see par. 12.8) and the serial port
RS232 of the PC.
The programming cable is not included.
With the CD-RS serial converter is possible
configure the Thyristor unit also through the
RS485 (see par. 12.9).
For this solution, the programming cable is not
necessary.
Run the software configurator and set the serial
port of the PC like the parameters P114  and
P115  of the Thyristor unit.

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3Quick Start
Caution: this procedure must be performed only by qualified persons.
If the Order Code of the Thyristor unit is in line with what you really need, then MULTIDRIVE has been
already configured in Factory and you just need to do the following steps:
1. Verify the MULTIDRIVE Sizing. Making sure that:
The load current is equal or less than the MAX current of MULTIDRIVE.
The load voltage is equal or less than the MAX voltage of MULTIDRIVE.
(see par. 4)
2. Verify the Order Code
(see par. 5.2)
3. Verify the Installation
(see par. 6)
4. Verify the Diagram of control connection:
All auxiliary connections must be done in line with wirings on this manual.
Verify that there isn’t a short circuit on the load.
(see par. 7.5)
5. Supply the Electronic boards
(see Order Code)
6. If not specified in the Order Code:
Set the Load Voltage in the parameter P116 .
Set the Load Current in the parameter P119 .
7. Make the Current Limit Procedure
(see par. 11.5)
8. With Burst Firing (BF) or Heater Break Alarm (HB)
make the Calibration procedure
(see par. 9.4)
The MULTIDRIVE Thyristor unit is ready to start.