RKC INSTRUMENT THW-3 Series User manual

Three Phase Thyristor Unit
Power Controller
R
THW-3SERIES

Easy and accurate setting
Powerful control functions
Useful standard functions
ONOFF OFF
Input
signal
The THW Series is available with constant current control, constant power control or constant voltage control. It
makes the THW Series suitable for any application with three phase power control.
Works against a rapid response
Auto-detecting power frequency
Three types of control modes are selectable
Phase control Zero-cross control
(Continuous proportional) (Input synchronization
system)
Zero-cross control
The wave form of the load power is switched
at a desired phase angle θto provide
smooth control.
Power is switched on and off when the
supply voltage is at 0V. This system
suppresses high frequency noise inherent to
phase control.
Supply voltage is switched on and off
according to the voltage pulse or contact
signals from a controller.
Three phase power controller has an LED display to show set values and input signals and front keys for easy setting
and monitoring. Setting can also be made with an external setting unit (variable resistor).
With either the ramp-up (soft-start) or ramp-down (soft-down) set to zero, the THV quickly responds to setting input
changes, and can be used in applications like RTP (Rapid Thermal Process).
The THW automatically selects power supply frequency 50 or 60Hz.
High performance power controller with powerful functions
Gradient setting, ramp-up (soft-start), ramp-down (soft-down) and high/low output limiters are supplied as standard.

100
0
100
80
60
40
20
0
100
80
60
40
20
0
25 50 75
Standard Functions
Optional Functions
This function limits the highest output for the period of a
preset time after power-ON and control mode change from
Stop to Run. It makes the THW Series suitable for heaters
which cause rush current flow, such as Halogen lamp,
Tungsten, Platinum, and Molybdenum heaters.
Output limiter High at start-up
100
80
60
40
20
0
High limiter at
the time of start
100
0
100
80
60
40
20
0
25 50 75
The contact input can be configured to Run/Stop,
Auto/Manual or alarm interlock reset. The alarm types
are reverse phase detection, power frequency
abnormal, and FAIL. Alarm output will go on, when any
of them goes in alarm status. Optional heater break
alarm and over-current alarm can be also configured as
an output (alarm logic selection).
16mA 20mA
8mA 12mA
Input signal
100
80
60
40
50
20
0
100
80
60
40
20
0
Input signal
Input signal
100
80
60
40
20
0
Output current (%) Output current (%)
16mA
12mA
8mA
20mA
This function maintains the output current constant when a
load or a power supply fluctuates. It makes the THW
Series suitable for heaters of which resistance greatly
changes by temperature change, such as Platinum,
Molybdenum, Tungsten, and Tantalum heaters.
This function controls the output to make its effective value
power proportional to the input. It makes the THW Series
suitable for heaters of which resistance gradually
increases by temperature or time, such as silicon carbide
type heater.
This function controls its effective value power at 50% of
the rating shown in the diagram below.
100
25 50 75
0
Load
(%)
100
80
60
40
20
0
Limiter set value
30%
60%
100%
Constant current control Constant power control Constant voltage control
0 20 40 50 60 80 100
20mA
16mA
12mA
8mA
5mA
300%200%100%0
60%
Soft start
Soft start
100
25 50 75
0
The relation between the setting input and the output
voltage can be set. Gradient setting is possible via front
keys or an external setter. Control characteristics may
vary with the setting as follows.
Gradient setting output characteristic diagram
Gradient setting
Input signal (%)
1. Auto setting input X Internal gradient setting X External gradient setting
2. Auto setting input X Internal gradient setting
3. Manual setting X Internal gradient setting X External gradient setting
Output
voltage
(%)
Gradient
setting
Even if setting input changes abruptly, output changes
slowly to suppress inrush current. Ramp-up (Start-up) and
ramp down (Start-Down) time can be set in the range of 0.1
to 99.9 sec via front keys.
Time
Soft-start
time Soft-down time
100%
Time
Ramp function (Soft-start & Soft-down)
Output
voltage
(%)
Input
signal
Soft-start & Soft-down action diagram
When phase control is selected for linear load (R: resistor),
output mode can be selected among Proportional phase
angle to input, proportional voltage to input, and
proportional square voltage (electric power) to input.
Three types of output modes
100
50
0412
204122041220
100
50
0
100
50
0
Input signal (mA) Input signal (mA) Input signal (mA)
Proportional phase
angle to input Proportional
voltage to input
Proportional square
voltage (electric power)
to input
* Default setting is proportional square voltage to input.
Phase
angle
(%) (%) (%)
Effective
voltage Electric power
Output highest and lowest values can be set via front
keys.
Output limiter (High & Low)
100
0
100
80
60
40
20
0
80%
80%
25 50 75
High limiter
High limiter
10%
Low limiter
Input signal (%)
Output
voltage
(%)
Output
voltage
(%)
High & Low limiter characteristic diagram
Output bias can be set via front keys.
(Base-up setting is valid when output limiter low is set to
0.0)
Input signal (%)
Base-up setting (Output bias)
Base-up
setting : 20%
Output
voltage
(%)
Output
voltage
(%)
Output
voltage
(%)
Output
voltage
(%)
Base-up output characteristic diagram
This function measures load current and compares it with
a heater break alarm set value. Alarm will be activated if
the load current goes into alarm ranges. UP to two alarm
set points can be set for the heater break alarm, which
could be used for heater-deterioration alarm and heater-
break alarm.
Heater break alarm Fuse break alarm
Over-current alarm
(Note) For phase control alarm does not work when the load
current is less than 15% of maximum load current.
This function limits the load current value to the heater.
The setting range is 30 to 100% of the rated current.
Load current limiter
(Note) If the load has a large inrush current, use soft-start function
along with this function to suppress the inrush current.
This function alone can not prevent the inrush current.
(For phase control
only) (For phase control only) (For phase control only)
Current limiter characteristic diagram
Output
current
The alarm goes on when the load current exceeds 120%
of the rated current.
High limiter output
at the time of start
Event input and alarm function
Constant current control characteristic diagram Constant power control characteristic diagram
Output current (%)
Constant voltage control characteristic diagram
This function maintains the output voltage constant when
a load or a power supply fluctuates.
(For phase control
only)
The alarm goes on when a fast blown fuse is blown. The
fuse with alarm output function must be used for this
function.

Specifications
: Check item :
Board check, EEPROM check
Adjustment data check, Set value range check
Action at abnormality :
FAIL lamp ON, Thyristor output OFF
(The alarm output can be output from the alarm
terminals.)
Self-diagnostic
function
: 20A, 30A, 45A, 60A, 80A, 100A AC
Max. load current
: 0 to 98% of rated voltage
: 1A
: Less than 17VA (200V type), Less than 21VA (400V type)
Power consumption
Min. load current
: a) 90 to 264V AC (Including power supply voltage variation)
Rating : 200 to 240V AC
b) 360 to 484V (Including power supply voltage variation)
Rating : 400 to 440V AC
* Power supply voltage for control circuit voltage is 180
to 264VAC. A step-down transformer is supplied with
the main unit
(Including power supply voltage variation)
Rating : 200 to 240V AC
Control method
Applicable load
: Group 1 (Field-programmable within Group)
Current input 4 to 20mA DC (Input impedance : 100Ω)
Current input 0 to 20mA DC (Input impedance : 100Ω)
Voltage input 0 to 5V DC (Input impedance : 30kΩ)
Voltage input 1 to 5V DC (Input impedance : 30kΩ)
Voltage pulse input 0/12V DC (Input impedance : 30kΩ)
Non-voltage contact input
Group 2 (Field-programmable within Group)
Voltage input 0 to 10V DC (Input impedance : 68kΩ)
Voltage pulse input 0/12V DC (Input impedance : 68kΩ)
Voltage pulse input 0/24V DC (Input impedance : 68kΩ)
Non-voltage contact input
Input signal
0
20
40
60
80
100
10 20 30 40 50 55
Function
Constant voltage
variation
Constant current
variation
Constant power
variation
Operating condition Stability
Power supply variation
: Within ±10%
Load variation
: 2 times
Power supply variation
: Within ±10%
Load variation
: 2 times
Power supply variation
: Within ±10%
Load variation
: 2 times
Within ±2%
of full scale
Within ±2%
of full scale
Table of Stability
Table of internal calorific value
Max.load
current (A)
Internal calorific
value (W)
20 30 45 60 80 100
82 118 172 226 298 370
: Phase control/ Zero-cross control (Selectable)
: Phase control : Linearity (R:Resistor) load, Control of primary
side of a transformer (magnetic field density
8,000 gauss or less)
Zero-cross control : Linearity (R:Resistor) load
Output voltage range
Power supply voltage
: 50/60Hz (Automatic discriminating)
Power frequency
: 50±1Hz, 60±1Hz (Performance guarantee range)
45 to 54.9Hz (50Hz), 55 to 64.9Hz (60Hz)
(Operating guarantee range)
Allowable power
frequency variation
: Gradient setting : 0.0 to 100%
[Front key or external setting unit]
Output limiter (High) : 0.0 to 100.0% [Front key]
Output limiter (Low) : 0.0 to 100.0% [Front key]
Output limiter at start-up (High)
: 0.0 to 100.0% [Front key]
Output limiter at start-up (Low)
: 0.0 to 100.0% [Front key]
Base-up setting (Output bias) : 0.0 to 100.0% [Front key]
Manual setting : 0.0 to 100%
[Front key or external setting unit]
Output setting
range
Output mode : When phase control is selected for linearity load (R: resistor),
output mode can be selected from Proportional phase angle
to input, proportional voltage to input, and proportional square
voltage (electric power) to input.
: Natural convection
: Performance guarantee range: 0 to +40ºC
Operation guarantee range: -15 to +55ºC
: 5 to 95%RH (Non-condensing)
Absolute humidity : MAX.W.C 29.3g/m3dry air
at 101.3kPa
: Vertical mounting
: Approx. 5.8kg (20 to 60A, 200V),
Approx. 10.3kg (20 to 60A, 400V),
Approx. 13.6kg (80A,100A, 200V and 400V)
• Digital input (DI) : 3 points, Non-voltage contact input
RUN/STOP, Auto/Manual, Alarm interlock reset
• Gradient setting (External setting unit is optional)
• Soft-up/Soft-down : 0.0 to 99.9sec
• Alarm output : 2 points
Open collector output, 24V DC, Max.100mA
Energized/De-energized is selectable.
Output logic selection function
1. Heater break alarm *1
2. Thyristor break alarm *1
3. OR logic of heater break alarm and thyristor
break alarm *1
4. OR logic of FAIL, power frequency abnormal,
reverse phase detection, over-current alarm *1,
fuse break down *1
5. OR logic of all alarm
*1: Optional alarm type
• ON/OFF control (External setting units are optional)
• Heater break alarm
Current measuring accuracy :
±2A (20A, 30A type)
±10% of Max. load current
(45A, 60A, 80A, 100A type)
Number of alarm delay times : 0 to 99 times
• Load current limiter
Setting range : 0 to 22.0A (20A type)
0 to 33.0A (30A type)
0 to 50A (45A type)
0 to 66A (60A type)
0 to 88A (80A type)
0 to 110A (100A type)
: Between main circuit terminals, power terminals and
heat sink 20M
Ω or more (500V DC)
: Between main circuit terminals, power terminals
and heat sink 2000V AC for one minute.
Cooling method
Operating ambient
temperature
Operating ambient
humidity
Insulation resistance
Dielectric voltage
Standard functions
Option function
Weight
Mounting method
• Temperature characteristics of load current
Ambient temperature (˚C )
Load
current
(%)
Internal manual setting via front keys
Internal manual
setting Internal manual
setting
Internal manual
setting Input signal from controller
Input signal from
controller
Internal manual setting via front keys
/ Input signal
External manual setting / Input signal
External manual
setting
External
contact action selection
Table of Output Setting Methods
External contact
input status
Close Open
* External contact is open when a connector is not used.
Within ±4%
of full scale
The THW has three output setting methods; input signal from a controller,
external manual setting from a setting unit, and internal manual setting
via front keys. Which Output setting method is used is decided by a
combination of external contact input status and a parameter of external
contact input action selection via front keys.

Model and Suffix Code
Model and Suffix Code
Accessories
Input signal
Fast-blow fuse
Optional function
Output mode
Max. load current
Setter (Volume, knob, Scale plate) 1 unit + Connector (Plug)
Setter (Volume, knob, Scale plate) 2 units + Connector (Plug)
Connector (Plug)
Terminal cover (For main circuit terminal)
THW-3
2
4
PZ
PZ
020
030
045
060
080
100
N
6
V
E
W
N
F
S
N
4
5
6
7
8
-1
-2
-9
-A
*2 : Input signal is programmable within group.
*1 : When 400 to 440VAC is selected as power supply, a step-down transformer for the THW unit power supply is supplied as standard.
*3: When optional heater break alarm and load current limiter is specified, over-current alarm and thyristor break alarm are also supplied.
*4: When contact input or/and alarm output is required, specify the connector as an accessory.
Control method
Power supply
Type
Specifications
*2
*1
*3,*4
*4,*5,*6
*3
200 to 240V AC
400 to 440V AC
Phase control/Zero-cross control (programmable, default: phase control)
20A AC
30A AC
45A AC
60A AC
80A AC
100A AC
0 to 5V DC
0 to 10V DC
1 to 5V DC
0 to 20mA DC
4 to 20mA DC
Standard (Proportional phase angle • Proportional voltage • Proportional square voltage)
Standard + Constant voltage control
Standard + Constant voltage control (with heater break alarm and load current limiter)
Standard + Constant current control (with heater break alarm and load current limiter)
Standard + Constant power control (with heater break alarm and load current limiter)
No fast-blow fuse
With fast-blow fuse (No fuse break alarm output)
With fast-blow fuse (With fuse break alarm output)
No optional function
Three Phase Thyristor Unit
N
0 to 5V DC0 to 20mA DC Voltage pulse 0/12V DC Non-voltage contact
Group 1
Group 2
1 to 5V DC4 to 20mA DC
0 to 10V DC Voltage pulse 0/12V DC Voltage pulse 0/24V DC Non-voltage contact
*5: Setters are for external gradient setting, external manual setting, and external high/low setting for on/off control. Use two pieces of setter in the following cases;
• When external gradient setting and external manual setting are required.
• High/low setting for on/off control is used.
*6: It is possible to specify more than one accessories by adding suffix code at the end. (Example: -1-9-A)

200V : 20A, 30A, 45A, 60A
200V : 80A,100A
400V : 80A,100A
400V : 20A, 30A, 45A, 60A
ELECTRIC
HAZARD
HIGH
TEMPERATURE
INDICATION LAMP
HBA1
HBA2
OCP
FUSE
CAUTION
POWER
+
+
-
-
A
V
SET
THY.B
CPU
FREQ
PHASE
L1 L2 L3
T1 T2 T3
251 (Mounting pitch)
263
200
183 (Mounting pitch)203
212
ELECTRIC
HAZARD
HIGH
TEMPERATURE
INDICATION LAMP
HBA1
HBA2
OCP
FUSE
CAUTION
POWER
+
+
-
-
A
V
SET
THY.B
CPU
FREQ
PHASE
L1 L2 L3
T1 T2 T3
335 (Mounting pitch) 347
230
213 (Mounting pitch) 235
244
ELECTRIC
HAZARD
HIGH
TEMPERATURE
INDICATION LAMP
HBA1
HBA2
OCP
FUSE
CAUTION
POWER
+
+
-
-
A
V
SET
THY.B
CPU
FREQ
PHASE
L1 L2 L3
T1 T2 T3
302 (Mounting pitch) 314
200
183 (Mounting pitch) 203
• When multiple units are installed, space
between units must satisfy the rules shown
in the drawing below.
100 or more
ELECTRIC
HAZARD
HIGH
TEMPERATURE
INDICATION LAMP
HBA1
HBA2
OCP
FUSE
CAUTION
POWER
A
SET
THY.B
CPU
FREQ
PHASE
L1 L2 L3
T1 T2 T3
6
6
6
212
*1
*1
*1
4-M5 (Mounting hole)
4-M5(Mounting hole) 4-M5(Mounting hole)
External Dimensions Unit: mm
2-ø6
2-ø12
2-ø6
2-ø12
2-ø6
2-ø12
*1 : When connecting the connector plug, install the power controller
by taking enough space for its wiring into account. Length including
an optional connector. Space for wiring is not considered in this
length.
Mounting direction
• Install the instrument as illustrated in
the drawing to increase the cooling effect.
100 or more
100 or more
20 or
more 20 or more 20 or more

External Wiring
1
2
3
4
5
6
7
8
9
10
12
1
2
3
4
6
7
8
DC24V (+)
5
Pin No.
9
10
11
0V12
Main circuit terminal
Terminal size
D
1/L1,3/L2,5/L3, 2/T1,4/T2,6/T3
4.3mm or
more 6.4mm or more 8.4mm or more 3.2mm or more
9.5mm or
less 12.0mm or less 22.0mm or less 5.5mm or less
123
20A/30A 45A/60A 80A/100A
+
+
-
-
A
V
123
+
+
-
-
A
V
11
RUN/STOP selection
Alarm interlock
reset
Auto/Manual setting selection
Contact close : Manual
Contact open : Auto
RUN/STOP selection
Contact close : RUN
Contact open : STOP
Alarm interlock reset
Contact close : Alarm interlock reset
Contact input
NO (Normally open)
C (Common)
ELECTRIC
HAZARD
HIGH
TEMPERATURE
INDICATION LAMP
HBA1
HBA2
OCP
FUSE
CAUTION
POWER
A
V
SET
THY.B
CPU
FREQ
PHASE
L1 L2 L3
T1 T2 T3
Connector Connector
Connector Connector Connector
Connector
Main circuit terminal
(Power supply side)
Main circuit terminal
(Load side)
Set key
Display
Indication
lamp
Input/Output
connector
Signal input
terminal
Ground
terminal
Power lamp
INDICATION LAMP
HBA1
HBA2
OCR
FUSE
THY_B .
FAIL
FREQ
PHASE
Indication Lamp
FAIL FAIL(
Self-diagnostic abnormality)
FREQ
Power frequency abnormality
Thyristor break alarm
PHASE Reverse phase detection
THY_B
HBA1 Heater break alarm 1
Heater break alarm 2
Fuse break alarm
HBA2
OCR Over current alarm
FUSE
Lamp Contents
* Up to two alarm set points can be set for the heater
break alarm.
* Fuse break alarm lamp is available when a fast blow
fuse with fuse break alarm output is used.
Connector
Alarm 1Alrm 2
24V DC
+
-
INDICATION LAMP
HBA1
HBA2
OCP
FUSE
POWER
+
+
-
-
A
V
SET
THY.B
CPU
FREQ
PHASE
Three phase
power supply
Three phase
Load
RST
1/L1 3/L2 5/L3
2/T1 4/T2 6/T3
U
V
W
NFB
L1 L2 L3
3
2
1
7/ 1
8/ 2
9/ 3
Step-down
transformer
* 400V type
only
Power supply
terminal
* Only 400V Type
: 400V type
only
7/ 1, 8/ 2,
9/ 3,
* The phases of the power supply
wirings (R, S, T) must match
those of the unit's main circuit
(1/L1, 3/L2, 5/L3).
Miswiring will damage or destroy
the load.
* The phases of the load (U, V, W)
must match those of the unit
(2/T1, 4/T2, 6/T3). Miswiring will
damage or destroy the load.
D (mm)
No.
Item
ø
ø
Input signal
4 to 20mA, 0 to 20mA input 1 to 5V, 1 to 5, 0 to 10V
and voltage pulse input
Short Short
Short
Controller Controller
Terminal
size D (mm)
ø
3.2mm or more
5.5mm or less
D
ø
+5V output
0V (GND)
Gradient setting input (0 to 5V input by gradient setter)
Manual setting input (0 to 5V input by manual setter)
Open collector output (+) : Alarm 1 output
Open collector output (+) : Alarm 2 output
Unused
External contact input (Auto/manual setting selection)
Pin No.2 - No.5, Open : Auto setting mode
Pin No.2 - No.5, Close : Manual setting mode.
External contact input (RUN/STOP selection)
Pin No.2 - No.6, Open : Stop mode
Pin No.2 - No.6, Close : Run mode.
External contact input (Alarm interlock reset)
Pin No.2 - No.6, Close : Alarm interlock reset
Connector
Contents
Controller
• Auto setting
(With gradient setter)
• ON/OFF control • External contact input • Alarm output
• Manual setting
(With manual setter)
• Auto/Manual setting selection • Auto/Manual setting selection
(With gradient setter)
Connector
Gradient
setter
Output
(Low)
setter
Output
(High)
setter
NO (Normally open)
NC (Normally close)
C (Common)
Close : Manual setting
Open : Auto setting
Auto/Manual
setting selection
Close : Manual setting
Open : Auto setting
* Gradient setting functions
in both automatic and
manual setting modes.
* When a relay is used, connect
an external diode or use a relay
with diode inside.
Short
Manual
setter
Gradient
setter
Manual
setter
Manual
setter
Short

CTHW01E
Accessories
!
THVP-S01
THWP-C01
THWP-T01
20A
30A
45A/60A
80A
100A
THWP-F30
THWP-F40
THWP-F20
THWP-F80
THWP-FA0
Fast-blow fuse
200V
20A
30A
45A/60A
80A
100A
THWP-F32
THWP-F42
THWP-F22
THWP-F82
THWP-FA2
400V
20A
30A
45A/60A
80A
100A
200V
20A
30A
45A/60A
80A
100A
400V
THWP-F31
THWP-F41
THWP-F21
THWP-F81
THWP-FA1
THWP-F33
THWP-F43
THWP-F23
THWP-F83
THWP-FA3
THWP-A01
THWP-A02
THWP-A03
Unit : mm Unit : mm
• Prevent metal fragments or load wire scraps from falling inside instrument to avoid electric shock, fire or malfunction.
• All wiring must be completed before power is turned on to prevent electric shock, fire or incorrect action.
CAUTION
200V : 20A, 30A, 45A, 60A
400V : 20A, 30A, 45A, 60A
200V/400V : 80A,100A
117
73 22 46
Max.47
60
50
31
40
φ 5-4
L1 L2 L3 l1l2l3
(Unit : 1 piece)
• Gradient setter, Manual setter, High/Low setter : THVP-S01
Scale plate Knob
10
20
30
40 50 60
70
80
90
1000
48
48
13.5
10 10
φ
24
φ6
M9X0.75
2
φ2.8
Volume (Resistance:5k Ω ,B)
10
φ16.1
φ14.8
18.7
• Step-down transformer : THVP-T01
* When power supply is 400V type,
Voltage down transformer (For
instrument power supply) is supplied.
* Please refer to the following codes to order accessories.
• Model code
Name
Setter
Model Code
Name
Model Code
Name
Model Code
Name
Model Code
Connector (plug)
Voltage down transformer
Terminal cover
(For main circuit
terminal)
(Unit : 1 piece)
Fast-blow fuse
with fuse break
alarm
•Before operating this product, read the instruction manual carefully to avoid incorrect operation.
• This product is intended for use with industrial machines, test and measuring equipment. It is not designed
for use with medical equipment.
•If it is possible that an accident may occur as a result of the failure of the product or some other
abnormality, an appropriate independent protection device must be installed.
• When installing this product, avoid the following:
•Direct exposure to sunlight.
• Direct contact with water.
• Corrosive environments.
• Hazardous areas containing explosive or flammable gases.
• Vibration or shock.
• Areas subject to electrical noise caused by inductive interference, static electricity or magnetic fields.
Printed in Japan: FEB.2005 7DOH(P) All Rights Reserved
Safety
Warning
(RIKA KOGYO CO.,LTD)
HEAD OFFICE : 16-6, KUGAHARA 5 CHOME OHTA-KU TOKYO 146-8515 JAPAN
PHONE : [phone] ( [phone] )
Email : [email protected]
FAX : [phone] ( [phone] )
http://www.rkcinst.com/
R