A
Single-phase Thyristor Unit
THV-1
Instruction Manual
IMR01M01-E9
Thank you for purchasing this RKC product. In order to
achieve maximum performance and ensure proper operation
of your new instrument, carefully read all the instructions in
this manual. Please place this manual in a convenient
location for easy reference.
SYMBOLS
WARNING
CAUTION
An external protection device must be installed if
failure of this instrument could result in damage to
the instrument, equipment or injury to personnel.
All wiring must be completed before power is turned
on to prevent electric shock, fire or damage to
instrument and equipment.
This instrument must be used in accordance with the
specifications to prevent fire or damage to
instrument and equipment.
This instrument is not intended for use in locations
subject to flammable or explosive gases.
Do not touch high-voltage connections such as
power supply terminals, etc. to avoid electric shock.
RKC is not responsible if this instrument is repaired,
modified or disassembled by other than
factory-approved personnel. Malfunction can occur
and warranty is void under these conditions.
This product is intended for use with industrial machines,
test and measuring equipment. It is not designed for use
with medical equipment.
This is a Class A instrument. In a domestic environment,
this instrument may cause radio interference, in which
case the user may be required to take adequate measures.
: This mark indicates precautions that must be
taken if there is danger of electric shock, fire,
etc., which could result in loss of life or injury.
: This mark indicates that if these precautions
and operating procedures are not taken,
damage to the instrument may result.
: This mark indicates that all precautions should
!
be taken for safe usage.
: This mark indicates important information on
installation, handling and operating
procedures.
: This mark indicates supplemental information
on installation, handling and operating
procedures.
: This mark indicates where additional
information may be located.
WARNING
!
CAUTION
This instrument is protected from electric shock by
reinforced insulation. Provide reinforced insulation between
the wire for the input signal and the wires for instrument
power supply, source of power and loads.
Be sure to provide an appropriate surge control circuit
respectively for the following:
− If input/output or signal lines within the building are
longer than 30 meters.
− If input/output or signal lines leave the building,
regardless the length.
This product is manufactured on the assumption that it is
mounted within a control panel. All high-voltage
connections such as power supply terminals must be
enclosed in the control panel to avoid electric shock by
operating personnel.
All precautions described in this manual should be taken to
avoid damage to the instrument or equipment.
All wiring must be in accordance with local codes and
regulations.
Always use this product at the rated power supply voltage,
load current and power frequency.
All wiring must be completed before power is turned on to
prevent electric shock, instrument failure, or incorrect
action.
To prevent instrument damage or failure, protect the power
line and the input/output lines with a protection device such
as fuse, etc.
If this product is used for phase control, higher harmonic
noise may be generated. Therefore in this case, take such
measures as installing an isolation transformer and
separating the power line from the high-voltage line for
load drive.
Prevent metal fragments or lead wire scraps from falling
inside instrument case to avoid electric shock, fire or
malfunction.
Tighten each terminal screw to the specified torque found
in the manual to avoid electric shock, fire or malfunction.
For proper operation of this instrument, provide adequate
ventilation for heat dispensation.
Do not connect wires to unused terminals as this will
interfere with proper operation of the instrument.
Turn off the power supply before cleaning the instrument.
Do not use a volatile solvent such as paint thinner to clean
the instrument. Deformation or discoloration will occur. Use
a soft, dry cloth to remove stains from the instrument.
To avoid damage to instrument display, do not rub with an
abrasive material or push front panel with a hard object.
NOTICE
This manual assumes that the reader has a fundamental
knowledge of the principles of electricity, process control,
computer technology and communications.
The figures, diagrams and numeric values used in this
manual are only for purpose of illustration.
RKC is not responsible for any damage or injury that is
caused as a result of using this instrument, instrument
failure or indirect damage.
RKC is not responsible for any damage and/or injury
resulting from the use of instruments made by imitating this
instrument.
Periodic maintenance is required for safe and proper
operation of this instrument. Some components have a
limited service life, or characteristics that change over time.
Every effort has been made to ensure accuracy of all
information contained herein. RKC makes no warranty
expressed or implied, with respect to the accuracy of the
information. The information in this manual is subject to
change without prior notice.
No portion of this document may be reprinted, modified,
copied, transmitted, digitized, stored, processed or
retrieved through any mechanical, electronic, optical or
other means without prior written approval from RKC.
ll Rights Reserved, Copyright 2002, RKC INSTRUMENT INC.
RKC INSTRUMENT INC.
®
1. CHECKING THE PRODUCT
When unpacking your new instrument, please confirm that the following items are included. If any item is missing, damaged, or
if your manual is incomplete, please contact RKC sales office or the agent.
• THV-1: 1 unit Accessories (option)
• Instruction manual (IMR01M01-E9): 1 copy • Setter for open loop control (potentiometer, knob and scale plate)
• Short bar: 1 piece • Fuse unit (fast-blow fuse [1 piece] and holder)
The short bar is connected to the “input • Output voltmeter (150 V span or 300 V span)
and power supply terminals.” • Connector (plug)
2. CONFIRMATION OF THE MODEL CODE
Check whether the delivered product is as specified by referring to the following model code list. If the product is not identical
to the specifications, please contact RKC sales office or the agent.
THV− 1 P Z − ∗ N − (−……) *
(1) (2) (3) (4) (5) (6) (7) * The code for accessory will be more than one if the product has
more than one accessory.
(1) Power supply
1: Single-phase 100 to 240 V AC
(2) Control method
PZ: Phase control/zero-cross control
(configurable)
(3) Rated current
020: 20 A
030: 30 A
045: 45 A
060: 60 A
080: 80 A
100: 100 A
(4) Input signal
5: Voltage input: 0 to 10 V DC
6: Voltage input: 1 to 5 V DC
8: Current input: 4 to 20 mA DC
Accessories (Order Separately)
THVP-S01: Setter (potentiometer, knob and scale plate)
THVP-F21: Fuse unit for 20 A (Fast-blow fuse [1 piece] and holder [3 circuits type])
THVP-F31: Fuse unit for 30 A (Fast-blow fuse [1 piece] and holder [3 circuits type])
THVP-F22: Fuse unit for 20 A (Fast-blow fuse [1 piece] and holder [1 circuit type])
THVP-F32: Fuse unit for 30 A (Fast-blow fuse [1 piece] and holder [1 circuit type])
THVP-F42: Fuse unit for 45 A (Fast-blow fuse [1 piece] and holder [1 circuit type])
THVP-F62: Fuse unit for 60 A (Fast-blow fuse [1 piece] and holder [1 circuit type])
THVP-F82: Fuse unit for 80 A (Fast-blow fuse [1 piece] and holder [1 circuit type])
THVP-FA2: Fuse unit for 100 A (Fast-blow fuse [1 piece] and holder [1 circuit type])
THVP-F20: Fast-blow fuse for 20 A (3 circuits type)
THVP-F2A: Fast-blow fuse for 20 A (1 circuit type)
THVP-F30: Fast-blow fuse for 30 A (3 circuits type)
THVP-F3A: Fast-blow fuse for 30 A (1 circuit type)
THVP-F45: Fast-blow fuse for 45 A (1 circuit type)
THVP-F60: Fast-blow fuse for 60 A (1 circuit type)
THVP-F80: Fast-blow fuse for 80 A (1 circuit type)
THVP-FA0: Fast-blow fuse for 100 A (1 circuit type)
THVP-V01: Output voltmeter (150 V span) [For phase control]
THVP-V02: Output voltmeter (300 V span) [For phase control]
THVP-C01: Connector (plug)
THVP-H01: Fuse holder for 20 A and 30 A (3 circuits type)
THVP-H02: Fuse holder for 20 A, 30 A and 45 A (1 circuit type)
THVP-H03: Fuse holder for 60 A, 80 A and 100 A (1 circuit type)
(5) Option function 1
N: No heater break alarm, current limiter and constant current control functions
H: Heater break alarm, current limiter and constant current control functions
(
The current limiter and constant current control functions are not available when the
zero-cross control.)
(6) Option function 2
N: No function
(7) Accessories
1: Setter for open loop control (potentiometer, knob and scale plate) [1 set]
and Connector (plug)
2: Setter for open loop control (potentiometer, knob and scale plate) [2 sets]
and Connector (plug)
3: Fuse unit for 20 A and 30 A
(fast-blow fuse [1 piece] and holder [3 circuits type])
4: Output voltmeter (150 V span) [For phase control]
5: Output voltmeter (300 V span) [For phase control]
6: Fuse unit for 20 A, 30 A, 45 A, 60 A, 80 A and 100 A
(fast-blow fuse [1 piece] and holder [1 circuit type])
9: Connector (plug)
Combination example of accessories
-1-3: Setter for open loop control [1 set] and Connector (plug) and Fuse unit
2 IMR01M01-E9
3. PARTS DESCRIPTION
The 20 A and 30 A types are used in the following figures for explanation, but the same explanations also apply to 45 A, 60 A,
80 A and 100 A types.
(7) Power lamp
(6) Parameter
key
(5) Connector
(socket)
Short bar
Mounting positions (upper)
Mounting positions (lower)
(1) Display
(2) UP keys
(3) Input and
power supply
terminals
(4) Main circuit
terminals
Name Description
(1) Display
Display the input signal values
and parameters.
(2) UP keys Used to change the values.
(3) Input and
power supply
Used to connect input signal
and power supply wires.
terminals
(4) Main circuit
terminals
(5) Connector
(socket)
Used to connect main circuit
wires.
Used to connect with a setter
(potentiometer), external
contact or controller.
In addition, used to heater
break alarm output.
(6) Parameter key
Used to select the desired
parameter group or to call up
the desired parameter.
(7) Power lamp
Lit when the power is turned
on.
4. MOUNTING
To prevent electric shock or instrument failure, always turn off the power before mounting or removing the
instrument.
4.1 Mounting Environment
Avoid the following conditions when selecting the mounting location:
• Ambient temperature of less than 0 °C or more than 40 °C.
The temperature inside the control panel increases due to heat generation of this instrument itself. Therefore, take into
account full ventilation by mounting forced ventilation fans on the panel.
Load
current (%)
100
80
60
40
20
0
• Ambient humidity of less than 5 % or more than 95 % RH.
• Rapid changes in ambient temperature which may cause condensation.
• Corrosive or inflammable gases.
• Direct vibration or shock to the mainframe.
• Water, oil, chemicals, vapor or steam splashes.
• Excessive dust, salt or iron particles.
• Excessive induction noise, static electricity, magnetic fields or noise.
• Exposure to direct sunlight.
• Excessive heat accumulation.
10 20 30 40 50 55
Temperature characteristic
(Including the closely mounted)
!
WARNING
(The rated current drops when the ambient temperature exceeds 40 °C.)
The temperature characteristic is common to
the all types (20 A, 30 A, 45 A, 60 A, 80 A and
100 A).
Temperature (°C)
60
IMR01M01-E9
3
4.2 Dimensions
c
a
20 A and 30 A types
160
172
Mounting dimensions Dimensions
Unit: mm
160 ± 0.2 200
45 A and 60 A types
Dimensions
174
188
48
125
133.5
2-M5
a
Dimensions when the connector plug (optional) is
connected. When connecting the connector plug, install the
thyristor by taking enough space for its wiring into account.
b
Minimum space when mounted closely side by side.
c
Some space for heat radiation is required in the vertical
direction between the lower and upper ends of the
instruments. Therefore, make a space of at least 200 mm
between them.
50 b
Unit: mm
Mounting dimensions
c
200
0.2
±
174
68
150
158.5 a
2-M5
a
Dimensions when the connector plug (optional) is
connected. When connecting the connector plug,
install the thyristor by taking enough space for its
wiring into account.
b
Minimum space when mounted closely side by side.
c
Some space for heat radiation is required in the
vertical direction between the lower and upper ends
of the instruments. Therefore, make a space of at
least 200 mm between them.
70 b
4 IMR01M01-E9
80 A and 100 A types
188
200
Mounting dimensions Dimensions
c
200
188 ± 0.2
Unit: mm
104
116
68
150
158.5
a
4-M5
a
Dimensions when the connector plug (optional) is connected.
When connecting the connector plug, install the thyristor by taking
enough space for its wiring into account.
b
Minimum space when mounted closely side by side.
c
Some space for heat radiation is required in the vertical direction
between the lower and upper ends of the instruments.
Therefore, make a space of at least 200 mm between them.
104 ± 0.2
120
b
4.3 Mounting Procedures
The mounting direction of the instrument must be the same as the direction shown in the figure below to provide adequate
ventilation space so that heat does not build up.
CAUTION
This unit generates heat. It is cooled by air convection when installed as shown. Failure to observe the instructions
in 4.2 and 4.3 could cause damage to the instrument, equipment or injury to personnel. Precautions should be
made for heat dissipation in the control cabinet.
1. Prepare the holes as specified in 4.2 Dimensions.
2. Place the instrument in mounting position.
3. Insert the mounting screws into the holes, then tighten them with a screwdriver.
Recommended tighten torque: 1 N⋅m [10 kgf.cm]
Customer must provide the set of screws.
Screw type: Pan-head screws (Size: M5, Length: 10 mm)
20 A, 30 A, 45 A and 60 A types 80 A and 100 A types
Mounting positions (upper)
Heat radiation direction
Heat radiation direction
Mounting positions
(upper)
Mounting
screw
Mounting
screw
The Figure shows the type of 20 A and 30 A.
However, the mounting procedure is the same
as for the type of 45 A and 60 A.
IMR01M01-E9
Mounting
direction
Mounting positions (lower)
Mounting
screw
Mounting
direction
Mounting
screw
Mounting positions (lower)
5
5. WIRING
r
To prevent electric shock or instrument failure, do not turn on the power until all the wiring is completed.
5.1 Wiring of Main Circuit
CAUTION
Always conduct wiring so that the phase of the main circuit (2/T1) coincides with that of terminal No .4 and the
phase of the main circuit (1/L1), with that of terminal No. 5. Otherwise the instrument may not function properly or
the load may be damaged.
When controlling the primary side of the transformer, do not open its secondary side of circuit during operation.
In addition, do not operate the instrument below the minimum load current.
THV-1 conforms to CE marking by using the noise filter.
The noise filter specified: SOSHIN ELECTRIC CO., LTD.
20 A/30 A: LF2030A-NH 60 A: HF2060A-UP 100 A: HF2100A-UP
45 A: HF2050A-UP 80 A: HF2080A-UP
Noise filte
1 3
Power supply
100 to 240 V AC
IN OUT
G
2 4
!
WARNING
THV-1
Load
23451
2/T1 1/L1
Fast-blow
fuse
Input and
power supply
terminals
There are neither fuses nor power switches in the power circuit of this instrument. Therefore install the fuses and
switches near the instrument, if necessary.
Use wires satisfying the rated current capacity.
Firmly tighten each terminal screw with the tightening torque specified below. Otherwise, electric shock, fire or
heat generation may result.
When using a solderless terminal lug, use ring type.
Ring type solderless terminal size and tightening torque
Main circuit terminals (2/T1, 1/L1)
20 A and 30 A 45 A and 60 A 80 A and 100 A
3.8 N⋅m
(38 kgf⋅cm)
9.0 N⋅m
(90 kgf⋅cm)
φ D
Ring type
solderless
terminal
Item Power terminals
(4, 5)
φ 3.2 mm or more 4.3 mm or more 6.4 mm or more 8.4 mm or more
D (mm) 5.5 mm or less 9.5 mm or less 13.2 mm or less 22.6 mm or less
Recommended
tightening torque
0.4 N⋅m
(4 kgf⋅cm)
1.6 N⋅m
(16 kgf⋅cm)
Wiring diagram of main circuit
!
Always conduct wiring so that the
phase of the main circuit (2/T1)
coincides with that of terminal No .4
and the phase of the main circuit
(1/L1), with that of terminal No. 5.
Otherwise the instrument may not
function properly or the load may
be damaged.
Can use it only in phase control.
THV-1
Input and
power supply
terminals
Main circuit
terminal (2/T1)
Output voltmeter (option)
V
Power supply
100 to 240 V AC
(50/60 Hz)
NL
12345
Terminal screws size
20 A/30 A 45 A/60 A 80 A/100 A
Main circuit
terminals
(2/T1, 1/L1)
Input and power
supply terminals
(1 to 5)
Main circuit terminal (1/L1)
Instrument power supply line (To terminal No.5)
Fast-blow fuse
M4 size M6 size M8 size
M3 size
Load
Power supply
100 to 240 V AC
(50/60Hz)
Instrument power supply line (To terminal No. 4)
6
Table of calorific values
20 A 30 A
100 to
240 V AC
30 W
43 W
Rating current
45 A
60 A
63 W
84 W
80 A
100 A
112 W
140 W
IMR01M01-E9
5.2 Wiring of Input Signal
r
r
+
−
r
r
−
Ω
Current input 4 to 20 mA DC, voltage input 0 to 10 V DC, 1 to 5 V DC and voltage pulse input 0/12 V DC
The input signal type can be changed by moving the short bar position. Any parameter change is not required for input type
change.
CAUTION
Firmly tighten each terminal screw with the tightening torque specified below. Otherwise, electric shock, fire or
the generation of heat may result.
When using a solderless terminal lug, use ring type.
Ring type solderless terminal size and tightening torque
Item Input terminals (1, 2 and 3)
Ring type
solderless
φ D
terminal
Current input 4 to 20 mA DC voltage pulse input 0/12 V DC
For current input (4 to 20 mA DC), short terminal
No.1 with terminal No.2.
Current input
4 to 20 mA DC
1 2 3 4 5
Short *
+ −
THV-1 input impedance: 100 Ω
φ 3.2 mm or more
D (mm) 5.5 mm or less
Recommended tightening torque 0.4 N⋅m (4 kgf⋅cm)
Voltage input 0 to 10 V DC, 1 to 5 V DC or
For voltage input (0 to 10 V DC, 1 to 5 V DC) and
voltage pulse input (0/12 V DC), short terminal
No.2 with terminal No.3.
Voltage input 0 to 10 V DC, 1 to 5 V DC
Voltage pulse input 0/12 V DC
12345
THV-1
Input and power supply
terminals
Temperature controlle
4 to 20 mA DC output
−
Short *
THV-1 input impedance
1 to 5 V DC, 0/12 V DC: 30 kΩ
0 to 10 V DC: 68 kΩ
THV-1
Input and power supply
terminals
Temperature controlle
0 to 10 V DC output
1 to 5 V DC output
0/12 V DC pulse output
−
+
The input signal type can be changed by moving the short bar position. Any parameter change is not required for input type
*
+
change. However for a voltage input of 1 to 10 V DC, no input signal can be changed.
Application: Current input 4 to 20 mA DC (Series connection)
Main circuit
terminal (1/L1)
Main circuit
terminal (2/T1)
Power supply
100 to 240 V AC
(50/60 Hz)
Temperature controlle
4 to 20 mA DC
+
Input and powe
supply terminals
1 2 3 4 5
Load
THV-1 THV-1
Fast-blow fuse
Input and power
supply terminals
12345
Load
THV-1 input impedance: 100
THV-1
Input and power
supply terminals
12345
Load
The number of THV-1 that
can be connected depends
on the allowable load
resistance of temperature
controller being used. For
resistance of controller,
see specification of the
controller instruction
manual.
IMR01M01-E9
7
Application: Voltage input 0 to 10 V DC, 1 to 5 V DC or voltage pulse input 0/12 V DC
r
r
−
r
r
(Parallel connection)
Main circuit
terminal (1/L1)
Main circuit
terminal (2/T1)
Power supply
100 to 240 V AC
(50/60 Hz)
Temperature controlle
0 to 10 V DC
1 to 5 V DC
0/12 V DC
+
Input and powe
supply terminals
THV-1
1 2 3 4 5
Load
THV-1 THV-1
Fast-blow fuse
Input and powe
supply terminals
12345
Load
THV-1 input impedance
1 to 5 V DC, 0/12 V DC: 30 kΩ
0 to 10 V DC: 68 kΩ
Input and powe
supply terminals
12345
Load
The number of THV-1 that
can be connected depends
on the allowable load
resistance of temperature
controller being used. For
resistance of controller,
see specification of the
controller instruction
manual.
5.3 Wiring for connector
The connector is used for contact input, auto/manual mode selection, external gradient setting, heater break alarm 1 output
or heater break alarm 2 output. Use the optional connector (plug) for wiring.
Pin number and details
THV-1 connector
(Socket)
1
2
3
4
5
6
7
8
Pin numbers
CAUTION
Use stranded wire of size 0.14 to 0.5 mm
Strip off the sheath from 8 mm from the leadwire end.
Pin number Details
1 +5 V output
2 0 V
3 Gradient setting input (0 to 5 V input by the gradient setter)
4 External manual mode input (0 to 5 V input by the manual setter)
5 Auto/Manual mode transfer (contact open: auto mode)
Shorting No.2 pin (0 V) with No.5 pin results in the manual mode.
6 Open collector output (+):
Used for output of the heater break alarm 1 or heater break alarm 2.
7
Open collector output (−):
Used for output of the heater break alarm 1 or heater break alarm 2.
8 Unused
2
for the leadwires.
8 mm
Stranded wire:
size 0.14 to 0.5 mm
(AWG28-20)
2
Connector (plug
)
8
IMR01M01-E9
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