Shinko PA-3000-H3 Instruction manual
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THREE-PHASE POWER CONTROLLER
PA-3000-H3
INSTRUCTION MANUAL
- Contents -
INTRODUCTION..............................................................4
1 FOR SAFE USE OF THIS INSTRUMENT ( Warning) ..5
2 CHECKING THE MODEL NUMBER .......................7
3 INSTALLATION.........................................................8
3.1 Installation Dimensions...............................................................................................................8
3.2 Installation Precautions...............................................................................................................9
4 DIMENSIONS AND NAME OF SECTIONS ..........10
4.1 External Dimensions ................................................................................................................10
4.2 Name of sections......................................................................................................................11
5 CONNECTIONS .....................................................13
5.1 Connection Precautions...........................................................................................................13
5.2 Functions of Setting Terminals.................................................................................................14
5.3 Preparation for Connection ......................................................................................................16
5.4 Connection of Main Circuit Terminals ......................................................................................18
5.5 Connection of Setting Terminals ..............................................................................................20
6 PARAMETER SETTING.........................................22
6.1 Front Panel ...............................................................................................................................22
6.2 Slope.........................................................................................................................................23
6.3 Elevation ...................................................................................................................................24
6.4 Soft Start ...................................................................................................................................24
6.5 Current Limit .............................................................................................................................25
6.6 Heater Disconnection Alarm ....................................................................................................26
6.7 Imbalance Adjustment..............................................................................................................26
6.8 Imbalance Alarm.......................................................................................................................28
6.9 Alarm Output Forced OFF........................................................................................................28
6.10 Feedback Control OFF ..........................................................................................................28
6.11 Dip switch Functions...............................................................................................................29
2
7 Running ...................................................................30
7.1 Check before Running .............................................................................................................30
7.2 Start of Operation......................................................................................................................31
7.3 Status Display...........................................................................................................................32
8 ALARM....................................................................33
8.1 Alarm Activation and Alarm Output ..........................................................................................33
8.2 Alarms and Countermeasures .................................................................................................33
9 SYSTEM PROTECTION........................................34
9.1 Power safety ………………………………………… ……………………………………. 34
9.2 Protection by alarm output 3 ………………………………………………………………….. 34
9.3 Installation environment…………………………………………………………………………36
10 TROUBLESHOOTING…………………………… 37
11 MAINTENANCE.....................................................39
11.1 Routine Inspection and Maintenance.....................................................................................39
11.2 Fuse Replacement .................................................................................................................40
11.3 Cooling Fan Replacement......................................................................................................41
11.4 Fuse Replacement for the receiving board............................................................................42
12 GLOSSARY ...........................................................43
12.1 Control Systems.....................................................................................................................43
12.2 Feedback Type.......................................................................................................................44
12.3 Settings...................................................................................................................................45
12.4 Alarm.......................................................................................................................................46
12.5 Load........................................................................................................................................48
12.6 Other.......................................................................................................................................48
13 GENERAL SPECIFICATIONS................................50
3
INTRODUCTION
Thank you for purchasing the PA-3000-H3 series power controller.
This manual contains instructions for the mounting, functions, operations and notes when operating the
PA-3000-H3 series power controller.
To prevent accidents arising from the misuse of this power controller, please ensure the operator receives this manual.
The PA-3000-H3 series 3-phase angle control power controllers feature a compact size/lightweight construction and are for high-density instrumentation. They are designed for exclusive use in 3-phase angle control, and are power regulators to control the power applied to an electric furnace heater, etc. by receiving signals from a controller or a manual setting unit.
CAUTION
(1) The information given in this manual may be subject to change without notice.
(2) Every possible care was taken in compiling this manual. However, if you find a question, error or mistake in it, please contact your nearest distributor.
(3) In spite of (2) above, SHINKO does not assume any liabilities concerning the results of this instrument’s operation.
4
1 FOR SAFE USE OF THIS INSTRUMENT
( Warning)
This chapter describes how to use this instrument correctly and to avoid injuries to you or others and property damage. Be sure to understand the following information thoroughly and observe the warnings and cautions given.
1. Checking the product
This instrument has passed our strict shipment inspections. After delivery, be sure to check the following items before use.
(1) Check if the delivered instrument is the one you ordered.
Ensure the specifications including the model number, rated voltage and rated current are correct.
(2) Check if this instrument was damaged during transportation, etc.
Thoroughly ensure that this instrument is not damaged.
If you notice any problem, please contact your nearest distributor.
2. Preconditions for use
This instrument is a component type designed for the installation inside an indoor instrumentation panel. Do not use it otherwise.
Before using this instrument, ensure safety by confirming the functioning of the fail-safe design, periodical inspection, etc. before shipping. In addition, for connection/operation of this instrument, use a professional with instrumentation knowledge.
Furthermore, it is necessary for an operator of this instrument to read this instruction manual for the proper understanding of fundamental operation, various precautions, etc. of this instrument.
3. Labels attached to this instrument
The following labels are attached to this instrument to ensure its safe use.
Label Name Description
Alert symbol mark
Protective conductor terminal
Caution: Moving parts
This label is attached to places requiring care in handling where there is a risk of electric shock or injury.
To prevent an electric shock, connect the protective conductor terminal to the protective conductor
(grounding) of the facility.
Keep your hands away from the mobile part (top panel fan) to prevent from injuries.
Caution: High temperature surface
To prevent burns, keep your hands away from the top and side panels.
4. Symbols used in this manual
The safety precautions are classified into categories: “Warning” and “Caution”.
Depending on the circumstances, procedures indicated by Caution may be linked to serious results, so be sure to follow the directions for usage.
Symbol
WARNING
CAUTION
Scope
Procedures which may lead to dangerous conditions and cause death or serious injury, if not carried out properly.
Procedures which may lead to dangerous conditions and cause superficial to medium injury or physical damage or may degrade or damage the products, if not carried out properly.
5
WARNING
The following information is critical for safety. Be sure to read and understand the following warnings thoroughly before reading this instruction manual. Remember that every warning is critical for preventing injuries and other accidents.
1. Installation on an instrument panel
Make sure to install this instrument inside an indoor instrument panel. Never use it on a desktop. As some of the main circuit terminals of this instrument are exposed, protect them against human contact by using a safety measure such as protective covers.
2. Over-current protection device
This instrument does not have a power switch. As a consequence, the power supply to this instrument should be protected with an over-current protection device (such as a circuit breaker) matching the power rating.
3. Installation safety devices
When this instrument is installed in or near other equipment, whereby the failure of this instrument or peripheral instruments may lead to damage or fiscal loss, make sure to attach all safety devices to the equipment and perform a final check of its fail-safe design at the final product side. Also, never use this instrument in important equipment affecting human lives, nuclear power, aviation or space.
4. Before turning this instrument on
Confirm that the protective conductor terminal of this instrument is connected to the protective conductor
(grounding) of the facility. Also, to prevent malfunction, make sure to connect a load to this instrument before turning the power on.
5. During operation
Do not touch this instrument during operation (as well as when it is turned on). High-voltage and high-temperature parts are very hazardous. Particularly, never touch the top panel, side panels, cooling fan, terminals and their surrounding area.
6. Modification or repair
To avoid an electric shock, fire or malfunction, this instrument must not be repaired, modified or disassembled by any person other than our authorized service personnel.
7. Compliance with the instruction manual
To use this instrument correctly and safely, use it in accordance with this instruction manual. We will not assume any liabilities for claims based on injuries, damage, loss of profit incurred due to abuse or misuse of this instrument.
8. Stop supplying power immediately if any abnormal event occurs.
Turn off the power immediately and contact your nearest distributor if there is any unusual odor, noise, smoke or abnormal heat.
9. Caution when lifting heavy products.
Products heavier than 18k g need more than one person when handling. The weight(s) of the products are shown in the [General Specifications] of this instruction manual.
6
2 CHECKING THE MODEL NUMBER
Control system
Phase control,
Voltage feedback
Phase control,
Current feedback
Phase control,
Power feedback
Phase control,
No feedback
30A 50A
Rated current
75A 100A 150A
PA-3030-VH3 PA-3050-VH3 PA-3075-VH3 PA-3100-VH3 PA-3150-VH3
PA-3030-AH3 PA-3050-AH3 PA-3075-AH3 PA-3100-AH3 PA-3150-AH3
PA-3030-PH3 PA-3050-PH3 PA-3075-PH3 PA-3100-PH3 PA-3150-PH3
PA-3030-H3 PA-3050-H3 PA-3075-H3 PA-3100-H3 PA-3150-H3
Control system
Phase control,
Voltage feedback
Phase control,
Current feedback
Phase control,
Power feedback
Phase control,
No feedback
200A 250A
Rated current
300A 400A 500A
PA-3200-VH3 PA-3250-VH3 PA-3300-VH3 PA-3400-VH3 PA-3500-VH3
PA-3200-AH3 PA-3250-AH3 PA-3300-AH3 PA-3400-AH3 PA-3500-AH3
PA-3200-PH3 PA-3250-PH3 PA-3300-PH3 PA-3400-PH3 PA-3500-PH3
PA-3200-H3 PA-3250-H3 PA-3300-H3 PA-3400-H3 PA-3500-H3
For a feedback type, 3 pieces of CT (Current transformer) are required for detection of load current and over-current.
7
3 INSTALLATION
3.1 Installation Dimensions
(Scale: mm)
For the dimensions of this instrument itself, see chapter 4, “Dimensions and Name of sections.”
Rated current: 30A/50A Rated current: 75A/100A
Rated current: 150A/200A/250A
210
Rated current: 300A/400A/500A
Caution: Minimum distance when plural instruments are installed side by side
8
3.2 Installation Precautions
WARNING
To prevent accidents, make sure to turn this instrument off before proceeding to the following operations.
Except for the accessories of the setting units, this instrument has been designed as a back -paneled unit to be installed inside an instrumentation panel.
CAUTION
Environment
• Inside an instrumentation panel indoors
• Out of direct sunlight
• Avoiding mechanical oscillations or impact
• Clear of water splashes
• Unaffected by strong noise, static, electric or magnetic fields
Other
• Ambient temperature -10 to 55 (When the ambient temperature exceeds 40 , reduce the load current.)
• Ambient humidity 30 to 90%RH (No condensation)
• Free from corrosive, explosive, flammable, or combustible gases, salt, high iron content, steam, oil, chemicals, conductive materials, mine dust or other unusual substances (metal powder, cut glass, iron or carbon)
• Free from dust or dirt
• Installation location altitude should be 2,000 meters or less.
• This instrument has high-voltage and high-temperature parts exposed externally. When installing this instrument, take proper measures to avoid contact with those parts.
• To allow the ventilation/cooling effect to achieve full performance, be sure to install this instrument with the UP mark (↑) facing upward. Reserve a space of 200 mm or more above the top of this instrument and a space of
100 mm or more below
• Keep the ambient temperature specified by placing a cooling fan, an air conditioner, etc. inside the panel, if necessary.
• Ensure that the panel on which this instrument is installed is strong enough to support it.
• To protect the system, be sure to install an external rapid-break fuse when the instrument does not have a built-in rapid-break fuse.
• Separate this instrument from equipment (electro-magnetic switch, motor, inverter, etc.) generating strong noise.
• The output waveform of this instrument contains harmonic components, which may become a source of power wave distortion or harmonic noise to other equipment. To prevent such problems, be sure to take countermeasures when installing peripheral equipment.
• Do not connect anything to the terminals that are not used. Otherwise, a malfunction may result.
• To prevent malfunction of this instrument due to environment, be sure to take the following dust measures at the control panel side. (especially in the case where this instrument is used under a special atmospheric condition such as using a carbon heater, etc.)
1. Design the control panel with a sealed structure and take heat radiation measures.
2. Apply the air purge to the control panel.
3. Perform periodical cleaning.
• Working ambient temperature is between -10 and +55 , but the rated current is specified for an ambient temperature of up to 40 as a reference. If the temperature exceeds 40 , be sure to lower the load current by referring to the following graph.
Allowable load current (%)
100
80
60
40
20
0
-10 0 10 20 30
Ambient temperature ( )
40 50 55
9
4 DIMENSIONS AND NAME OF SECTIONS
4.1 External Dimensions
(Scale: mm)
ø18
Rated current: 30A/50A
ø9
Setting terminals M3
Protective conductor terminal M4
U1 U2 V1 V2 W1 W2
28 33 28 33 28
200
Main circuit terminals M5
200
94.5
Rated current:150A/200A/250A
ø9
260
ø18
Setting terminals M3
Setting terminalsM3
U1 U2 V1 V2 W1 W2
70 67 70
420
MaincircuitterminalsM10
67 70
*
131
240
ProtectiveconductorterminalM4
*141 for 250A type only
Rated current: 75A/100A
210
ø9
ø18
Setting terminals M3
Protective
Protective conductor
U1 U2 V1 V2 W1 W2
28 56 28 56 28
288
Main circuit terminals M6
19
220
110.5
Rated current: 300A/400A/500A
260
φ9
φ18
Setting terminals M3
Protective
Protective conductor terminal M4
Main circuit terminals
U1 U2 V1 V2 W1 W2
10
70 67 3337 67 70
420
*
M12
50
154
240
* M16 for 500Atype only
10
4.2 Name of sections
Rated current: 30A/50A (Uncovered view)
Setting terminals
Front controls
Rapid-break fuse
Main circuit terminals
U1 U2 V1 V2 W1 W2
Protective conductor terminal
Rated current: 75A/100A (Uncovered view)
Cooling fan *
Setting terminals
Rapid-break fuse
Fuse for receiving board
Front controls
Receiving board box
Main circuit terminals
U1 U2
V1 V2 W1 W2
Protective conductor terminal
* Cooling fans not mounted for a rated current of 75A units
11
Rated current: 150A/200A/250A (Uncovered view)
Cooling fan ( *1)
Setting terminals
Rapid-break fuse
Fuse for receiving board
Front controls
Receiving board box
U1 U2 V1 V2 W1 W2
Main circuit terminals
Protective conductor terminal
(*1) For units with rated currents of 200A and 250A, 3 fans are provided .
Rated current: 300A/400A/500A (Uncovered view)
Cooling fan ( *2)
Setting terminals
Fuse for receiving board
Front controls
Receiving board box
Rapid-break fuse
Main circuit terminals
U1 U2
V1 V2 W1 W2
Protective conductor terminal
( *2) For units with rated currents of 300A, 2 cooling fans are provided .
12
5 CONNECTIONS
5.1 Connection Precautions
WARNING
(1) To prevent accidents, make sure to turn this instrument off before proceeding to the following operations.
(2) For safety, make sure to connect the protective conductor terminal to the protective conductor of the facility.
(3) For the main circuit wiring, connect the power supply side to the terminals U1, V1 and W1, and the load side to the terminals U2, V2 and W2.
(4) Make sure to coat the conductive parts with insulating materials (tube, tape, etc.) in the power supply connection sections. Any exposed connection part may result in a fire due to an electric shock or short-circuiting.
CAUTION
(1) Ensure that the rated voltage of this instrument matches the supply voltage.
(2) Check the size of each screw/bolt and tighten it with a force within ±10% of the specified securing torque.
Screw securing torque
M3 M4 M5 M6 M8 M10 M12 M16
0.5 Nm 1.2 Nm 3 Nm 5 Nm 12 Nm 25 Nm 40 Nm 100 Nm
(3) Select wires with a gauge matching this instrument. Using a too thin wire may result in heat generation or a fire. The dielectric strength of the wires should be high enough to withstand the circuit voltage. Otherwise, an electric shock may result.
(4) Use crimp type terminals for connection to the setting terminals. Imperfect connection may result in an electric shock or malfunction.
(1) To prevent noise, distribute the wires to the setting terminals apart from the main circuit terminals (U1, V1, W1,
U2, V2, W2) and do not put them in the same duct as the wires for the main circuit.
(2) The crimp type terminals for use with the setting terminals should be the R1.25-3S (small diameter for M3 screws).
(3) Even when this instrument is not operating with output, its output terminals generate a voltage from the internal snubber circuit. So it is necessary to install an over-current protection device (a breaker, etc.) to prevent an electric shock during maintenance and inspection.
(4) Due to the performance of this instrument, its wires may cause noise interference with external equipment. Be sure to distribute the wires of this instrument away from those of the peripheral equipment.
Also take noise countermeasures, such as the insertion of noise filters, as required.
(5) Equipment that are sources of noise (magnetic switch, motor, inverter, etc.) in the surroundings may affect the operation of this instrument. Distribute the wires of this instrument away from such peripheral equipment, and also take noise countermeasures, such as the insertion of noise filters, as required.
(6) After connecting, be sure to attach the cover to its original position to ensure safety.
13
5.2 Functions of Setting Terminals
CAUTION
If settings are performed immediately after turning this instrument on, sudden changes in the output may affect the load or peripheral equipment. Perform the setting change gradually after the output stabilizes.
This instrument has setting terminals in addition to the main circuit terminals. Use them as required.
5.2.1 Layout and names of setting terminals
Terminal layout
Remote setting input (AI) types
AI1: Slope
[Function selection by DI3 and SW2 No. 4]
AI2: Elevation
[Function selection by DI3 and SW2 No. 5]
AI3: Current limit
[Function selection by DI3 and SW2 No. 6]
Setting terminal
Potentiometer signal
(10k is recommended.)
[0 - 2.5VDC = 0 - 100%]
2.5VDC
AI
AI
COM
AI
V REF
AI
1
AI
2
AI
3
Non-voltage contact or open collector
(Contact capacity: 1mA5V DC or more)
DI
COM
DI
1
DI
2
DI
3
DI
Remote control input (DI) types
DI1: Operation state (Run/Stop) switching
[Logical switching by SW2 No. 1]
DI2: Control system (Phase/Zero) switching
[Logical switching by SW2 No. 2]
DI3: Setting system (Front/External) switching
[Logical switching by SW2 No. 3]
(NC)(NC)(NC)
[Wiring example]
Without setting unit
19
16
1
17
2
18
3
19
4
20
5
21
6
22
7
23
8
24
9
25
10
26
11
27
12
28
13
29
14
30
15
AL3 AL2 AL1
Slope setting unit
20
Input mA V OUT IN
CT
U
CT
V
CT
W
(NC)
CT
(10k )
Manual setting unit
(10k )
2
20
1
19
20
1
+ -
4~20mADC
Input resistance:About 100
[Short out (16) and (17)]
1 - 5V DC
Input resistance:About 50k
[Short out (17) and (18)]
K L
Phase U
CT
0-5AAC
K L
Phase V
CT
0-5AAC
K L
Phase W
CT
0-5AAC
• When the CT is not built in, connect a CT externally if required.
• Do not connect the secondary side of the CT to ground in parallel.
Alarmoutput: 3 points (AL1,AL2,AL3)
Mechanical relay/ a contact
Max. load: 240VAC/1A, 30V DC/1A
Min. load: 5V DC/10mAor more
Alarmtype:
AL1: Over-current alarm, rapid-break fuse melting alarm, radiation-fin over-heat alarm(100Aor more)
AL2: Element abnormality alarm, heater disconnection alarm, unbalanced phase alarm
AL3: Phase sequence abnormality alarm, phase drop alarm, frequency abnormality alarm
•
TheAL3 alarmoutput relay becomes OFF when the alarmis activated.
The actual layout is either horizontal or vertical depending on model.
Terminal list
(1) Remote setting input common (AI COM)
(2) Remote setting input ref. voltage (AI V REF )
(3) Remote setting input 1 (AI1)
(4) Remote setting input 2 (AI2)
(5) Remote setting input 3 (AI3)
(6) Remote contact input common (DI COM)
(7) Remote contact input 1 (DI1)
(8) Remote contact input 2 (DI2)
(9) Remote contact input 3 (DI3)
(10) NC
(11) NC
(12) NC
(13) Alarm output 1 (AL1)
(14) Alarm output 2 (AL2)
(15) Alarm output 3 (AL3)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(30)
Control input signal (+)
Control input signal selection (mA/ V)
Control input signal (-)
Control signal output (OUT)
Control signal output
CTU (K)
CTU (L)
CTV (K)
CTV (L)
(25) CTW (K)
(26) CTW (L)
(27) NC
(28) Alarm output 1 (AL1)
(29) Alarm output 2 (AL2)
Alarm output 3 (AL3)
(IN)
The “NC” terminals are not used, so do not connect anything to them. Otherwise, malfunction may result.
Be careful that the control signal [(16) - (20)] and the remote setting input signal [(1) - (5)] are not isolated in the internal circuitry of this instrument.
14
5.2.2 Details of setting terminals
Pin No.
Name
(1)
(2)
(3)
(4)
(5)
(6)
Remote setting input common (AI COM)
Remote setting input ref. voltage (AI V REF )
Remote setting input 1
(AI1)
Remote setting input 2
(AI2)
Remote l setting input 3
(AI3)
Remote contact input common (DI COM)
Function
Common (reference ground) terminal for the remote setting input (AI)
Outputs 2.5V DC reference voltage for the remote setting input (AI)
Inputs analog signal for the slope setting
0 to 2.5V DC of analog signal corresponds to the slope 0% to 100%.
Inputs the analog signal for the elevation setting
0 to 2.5 V DC of analog signal corresponds to the elevation 0% to 100%.
Inputs the analog signal for the current limit settings
0 to 2.5 V DC of analog signal corresponds to the current limit 0 to 100%.
Common (reference ground) terminal for the remote contact input (DI).
(7)
(8)
Remote contact input 1
(DI1)
Remote contact input 2
(DI2)
Inputs the remote contact for operation status (Run/Stop) switching.
When “Stop” is switched to “Run”, the internal SV (control SV used in computational processing) starts from 0%.
Input the remote contact for the control system (Phase angle/Zero-cross) switching.
When switched during operation, the internal SV (control SV used in computational processing) starts from 0%.
(9)
(13)
(28)
(14)
(29)
(15)
(30)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
Remote contact input 3
(DI3)
Input the remote contact for the setting type (Front setting [SET potentiometer]/Remote setting input [AI]) switching.
Alarm output 1
(AL1)
Alarm output 2
(AL2)
Alarm output 3
(AL3)
The alarm output relay is turned ON when an over-current, rapid-break fuse meltdown or heat radiation fin overheat, or their combination, occurs.
To avoid noise and protect contacts, be sure to connect a contact protection device and connect the load to it via a buffer relay. (Ref. 5.4.3)
The alarm output relay is turned ON when the heater disconnection, thyristor element abnormality or unbalanced phase, or their combination occurs.
To avoid noise and protect contacts, be sure to connect a contact protection device and connect the load to it via a buffer relay. (Ref. 5.4.3)
The alarm output relay is turned ON after the initialization operation (mainly frequency assessment operation based on the synchronizing signal) is completed normally at start-up or reset. The relay is turned OFF when a phase sequence abnormality, phase drop, frequency abnormality, or their combination occurs. To avoid noise and protect contacts, be sure to connect a contact protection device and connect the load to it via a buffer relay. (Ref. 5.4.3)
Control input signal (+) Connect the (+) signal of the control input signal.
Control input signal selection (mA / V)
Terminal to select whether 4 to 20mA DC or 1 to 5V DC control input signal is used.
To use 4 to 20mA DC control signal, short terminals (16) and (17).
To use 1 to 5V DC control signal, short terminals (18) and (17).
Use the provided short-circuit plate for the short circuit.
Control input signal (-) Connect the (-) signal of the control input signal.
Outputs 0 to 2.5V DC of control signal, which corresponds to 0 to 100% of control
Control signal output
(OUT) input signal, from the internal circuitry.
Usually, connect this terminal (19) directly to the control signal input (IN) terminal
(20). Use the provided short circuit plate for connection between (19) and (20).
Control signal input (IN)
CT
CT
U (K)
U (L)
CT V (K)
Inputs 0 to 2.5V DC corresponding to 0% to 100% of control signal.
Usually, connect the control signal output (OUT) terminal (19) directly to this input terminal (20).
CT input (K) terminal for the U-phase.
CT input (L) terminal for the U-phase.
CT
CT
CT
V (L)
W (K)
W (L)
CT input (K) terminal for the V-phase.
CT input (L) terminal for the V-phase.
CT input (K) terminal for the W-phase.
CT input (L) terminal for the W-phase.
15
5.3 Preparation for Connection
The locations of the main circuit and setting terminals differ depending on model.
CAUTION
Do not remove the cover for wiring, except when wiring to terminals for an external transformer connection.
Otherwise, malfunction of this instrument, including damage to the internal electronic circuitry, may result.
(30A – 500A type)
Step 1
Loosen screws.
Step 2
Remove the setting terminal cover.
Step 3
Loosen screws.
Step 4
Raise the cover slightly and remove the cover from the screws as shown.
16
Step 5
Lower the cover and connect wires to the setting terminals.
Step 7
Reattach the cover and tighten the screws.
Step 6
Raise the cover and place the notch of the cover on the screw as shown below.
Connect wires to the main circuit terminals.
Main circuit terminals
Step 8
Reattach the setting terminal cover and tighten the screws.
17
5.4 Connection of Main Circuit Terminals
WARNING
(1) To prevent accidents, be sure to turn this instrument off before proceeding to the following operations.
(2) The connection should be performed by personnel with sufficient knowledge and practical experience of wiring work.
5.4.1 Basic connection
Setting terminals
21 22 23 24 25 26
Do not connect the secondary side of the CT to ground.
R
S
T
R
S
T
Main circuit terminals
K
U1 U2
K L
L
K
V1 V2
K L
L
K
W1 W2
K L * CT
L
Protective conductor (ground)
* When the CT is not built in, externally connect a CT as required.
Standard type (Main circuit power and control circuit power utilize common terminals.)
Setting terminals
21 22 23 24 25 26
Do not connect the secondary side of the CT to ground.
Main circuit terminals
K
U1 U2
K L
L
K
V1 V2
K L
L
K
W1 W2
K L * CT
L
U
V
Protective conductor (ground)
* When the CT is not built in, connect a CT externally as required.
Special type (Main circuit power terminals are separated from those of control circuit power.)
18
5.4.2 Connection of the transformer load
R
S
T
Main circuit terminals
U1 U2
*
Dummy resistor
3- phase transformer
V1 V2
W1 W2
Protective conductor (ground)
* A non-load running, in the case of the transformer load, may cause damage to this instrument and/or peripheral equipment (including the transformer). To prevent such damage, connect dummy resistors across the phases on the primary side of the transformer.
Use dummy resistors with resistance that can set currents between phases to 0.5A or more. For example, when the power voltage is 200V, the resistance should be 400 . In addition, the resistors should have a higher power value, being three or more times the calculated value: For example, for the 400 resistor, select a resistor with 300W or more as the calculated power value is 100W. Also, take necessary countermeasures such as cooling fans, depending on heat generation.
Never touch the dummy resistors because they are dangerous due to generated heat.
CAUTION
(1) Be sure to match the power phase on the power supply side and load side.
(2) Use a high-quality power supply. If the waveform is distorted or includes noise, normal control will not be performed. This caution is particularly important when using a private electric generator.
5.4.3 Connection of the alarm output
Connect the alarm output terminals to the load via a buffer relay and contact protection element.
~
Generally, as a contact protection element, a CR combined element is used for AC power, and a diode is used for DC power.
19
5.5 Connection of Setting Terminals
WARNING
(1) To prevent accidents, be sure to turn this instrument off before proceeding to the following operations.
(2) The connection should be performed by personnel with sufficient knowledge and practical experience of wiring work.
1) Control input signal only
Current signal (4-20mADC) Voltage signal (1-5VDC) Contact input signal (High-limit/low-limit setting units are connected.
4-20mADC
16
17
1-5VDC
18
19
16
17
H
C
L
3
2
1
3
2
1
2
20
1 Controller Controller
18
19
20 20 Low-limit setting unit
Variable resistor (10k )
High-limit setting unit
Variable resistor (10k )
•
Setting units: Low-limit value<High-limit value
2) Manual setting unit with auto/manual switching 3) Manual setting unit only
Current signal (4-20mA DC) Manual setting unit only
4-20mA DC
16
Controller
Manualsettingunit
2
19
17
18
2
20
1 3
2
AUTO
MAN
1
Variable resistor (10k )
20
1
Manualsettingunit
3
2
1
Variable resistor (10k )
4) With slope setting unit (Slope using control input signal)
Current signal (4-20mA DC)
4-20mA DC
16
17
18
Controller
Slope setting unit
3
2
1
Variable resistor (10k )
19
20
1
5) With slope setting unit [Slope using remote setting input (AI1)]
Current signal (4-20mA DC)
4-20mA DC
16
Controller
17
18
Voltage output unit *
0-2.5V corresponds to 0-100%.
19
20
2
3
1
(PLC, etc.)
Use the two short circuit plates provided for connections between (16) and (17) (or between 17 and 18), and between (19) and (20), as required. Be sure to check the terminal numbers when connecting them.
* When connecting voltage output units to the remote setting inputs (AI1 to AI3), it is necessary to isolate each output from the voltage output units when plural PA-3000-H3 units are connected.
In addition, the output from one voltage output unit cannot be connected to plural PA-3000-H3 units in parallel.
20
6) With elevation setting unit (Elevation using remote setting input )
Current signal (4-20mADC)
Controller
4-20mADC
Elevation
3
2
1
Variable resistor (10k )
16
17
18
19
20
2
4
1
7) Manual, slope setting units & Auto/Manual switching
Current signal (4-20mADC)
4-20mADC
16
17
18
Controller
Slope setting unit
3
2
1
Variable resistor (10k )
Manual setting unit
1
2
3
Variable resistor (10k )
AUTO
MAN
19
20
1
2
8) Operation of multiple instruments
Current signal (4-20mADC)
4-20mADC
16
Controller
16
17
18
19
20
17
18
19
20
16
17
18
19
20
1-5VDC
Controller
Voltage signal (1-5VDC)
16
17
18
19
20
16
17
18
19
20
16
17
18
19
20
Connectable numbers of the PA-3000-H3 units for plural-unit operation are limited depending on the output capacity of a controller.
CAUTION
(1) After completing all connections, be sure to reattach the setting terminal cover.
(2) The internal circuitry may be destroyed if an over-current or over-voltage is applied to the control input signal terminal. Be careful when applying a signal to this terminal.
21
6 PARAMETER SETTING
6.1 Front Panel
Status display
Trimmers SET1 to SET6
Dip SW1
Dip SW2
Trimmers SET7 to SET9
Adjust each trimmer by turning it slowly using a thin flat screwdriver.
Also, use the same screwdriver for switching the Dip switches.
The Dip switch is ON in an up position and OFF in the down position.
[Functions of the SET trimmers]
SET trimmers Function
SET1 trimmer Slope
SET2 trimmer Elevation
SET3 trimmer
Soft Start
SET4 trimmer Current Limit
SET5 trimmer
SET6 trimmer
SET7 trimmer
SET8 trimmer
SET9 trimmer
Ratio of heater disconnection alarm
Imbalance ratio of imbalance alarm
Output gain of imbalance adjustment
V phase output of imbalance adjustment
W phase output of imbalance adjustment
Setting range
0 to 100%
0 to 100%
Approx. 1 to 20 sec.
0 to 100%
10 to 100%
1 to 40%
60 to 140%
-40 to +40%
-40 to +40%
Default (Factory set)
100% (Full clockwise)
0% (Full counterclockwise)
Approx. 1 sec.
(Full counterclockwise)
100% (Full clockwise)
100% (Full clockwise)
40% (Full clockwise)
Approx. 100% (Center)
Approx. 0% (Center)
Approx. 0% (Center)
The scales of the trimmers are given as approximate references. Even when a trimmer is set to the center position, the set value is not always the center value of the setting range (it is nevertheless approximately the center value).
Each trimmer has a dead band near the fully counterclockwise and fully clockwise positions. A position slightly before the fully counterclockwise or fully clockwise position becomes the low or high limit value of the setting range.
22
6.2 Slope
(1) Selecting the setting method
・ The slope (Slope A) can be set either with the front panel setting (SET1 trimmer) or the remote setting input
(AI1) as shown in the following table.
・ When the slope setting (Slope B) [Setting terminals (19), (20) and (1)] using the control input signal is used, it is not necessary to set this item.
Setting method
When the front panel setting is used (SET1 trimmer)
Setting terminals (6) to (9)
(DI3) setting
[Setting type (front/ remote) switching]
Open
Short
Dip SW2 No. 3
[DI3 logical switching]
OFF
ON
Dip SW2 No. 4
[AI1 individual selection]
Any position
Any position
When the remote setting input is used (AI1)
(Example)
Open
Short
ON
OFF
ON
ON
To use the front panel setting (SET1 trimmer) only when the setting terminals (6) and (9) (DI3) are short-circuited, turn on the No. 3 and No. 4 of the Dip SW2 .
[Reference] Flowchart for the slope (Slope A) setting method selection
Setting of remote contact input [DI3] 6 9
(The logic of DI3 is switched by No. 3 of SW2.)
When setting type (DI3) is
[front panel setting]
[DI3=Open(SW2No.3=OFF)]
[DI3=Short(SW2No.3 = ON)]
Setting of [Dip SW2
No.4] of front panel
Front panel setting has priority.
Setting source of [slope
(Slope A)] adopted
Individual selection of remote setting input: When [slope] is set by [front panel setting]
[SW2 No.4 = OFF]
Front panel setting
[SET1] trimmer
When setting type (DI3) is
[remote setting input]
[DI3 =Short (SW2 No.3 = OFF)]
[DI3 =Open (SW2 No.3 = ON)]
Individual selection of remote setting input: When [slope] is set by [remote setting input]
[SW2 No.4 = ON]
Remote setting input
[AI1]
2
3
1
(2) Setting (SET1 trimmer) on the front panel
• The setting values on the front panel setting (SET1 trimmer) become 0% at the fully counterclockwise position and 100% at the fully clockwise position.
• Turn the trimmer with a thin flat screwdriver while monitoring the output to adjust to the desired value.
• The default value of the front panel setting (SET1 trimmer) is 100%.
(3) Setting (AI1) using the remote setting input
• Adjust the remote setting unit while monitoring the output to adjust to the desired setting value.
• The setting value becomes 0% at 0V of the voltage applied between the setting terminals (3) and (1) and becomes 100% at 2.5V.
(4) Alternative setting method (Slope using the control input signal = Slope B)
• The slope (Slope B) using the control input signal can also be set by
Remote setting unit
OUT
IN
19 inserting a remote setting unit between the control signal output
(OUT) terminal (19) and control signal input (IN) terminal (20). (Right
(10k )
20
1 diagram)
• The slope (Slope B) using the control input signal becomes effective despite the slope setting selection [Ref. (1)].
• When the slope (Slope B) using the control input signal is not used, short-circuit terminals (19) and (20) .
The final slope setting value is the product of the slope setting (Slope A) set by either [Front panel setting (SET1 trimmer)] or [Remote setting input (AI1)] and [Slope using the control input signal (Slope B)].
(Example) Final slope setting value =Slope A X Slope B = 0.50 (50%) X 0.80 (80%) = 0.40 (40%)
23
6.3Elevation
(1) Selecting the setting method
• The elevation can be set either with the front panel setting (SET2 trimmer) or the remote setting input (AI2) as shown in the following table.
Setting method
Setting terminals (6) to (9)
(DI3) setting
[Setting type (front/ remote) switching]
Dip SW2 No. 3
[DI3 logical switching]
Dip SW2 No. 5
[AI2 individual selection]
Whenthe frontpanel setting is used (SET2 trimmer)
When the remote setting input is used (AI2)
Open
Short
Open
Short
OFF
ON
ON
OFF
Any position
Any position
ON
ON
(Example) To use the front panel setting (SET2 trimmer) only when the setting terminals (6) and (9) (DI3) are short-circuited, turn on No. 3 and No. 5 of the Dip SW2.
[Reference] Flowchart for the elevation setting method selection
Setting of remote contact input [DI3] 6 9
(The logic of DI3 is switched by No. 3 of SW2.)
When setting type (DI3) is
[front panel setting]
[DI3=Open(SW2No.3=OFF)]
[DI3=Short(SW2No.3 = ON)]
Setting of [Dip SW2
No.5] of front panel
Front panel setting has priority.
Individual selection of remote setting input: When [elevation] is set by [front panel setting]
[SW2 No.5 = OFF]
Setting source of
[elevation] adopted
Front panel setting
[SET2] trimmer
When setting type (DI3) is
[remote setting input]
[DI3 =Short (SW2 No.3 = OFF)]
[DI3 =Open (SW2 No.3 = ON)]
Individual selection of remote setting input: When [elevation] is set by [remote setting input]
[SW2 No.5 = ON]
Remote setting input
[AI2]
2
4
1
(2) Setting (SET2 trimmer) on the front panel
• The setting values on the front panel setting (SET2 trimmer) become 0% at the fully counterclockwise position and 100% at the fully clockwise position.
• Turn the trimmer with a thin flat screwdriver while monitoring the output to adjust to the desired value.
• The default value of the front panel setting (SET2 trimmer) is 0%.
(3) Setting (AI2) using the remote setting input
• Adjust the remote setting unit while monitoring the output to adjust to the desired value.
• The setting value becomes 0% at 0V, and 100% at 2.5V of the voltage applied between setting terminals (4) and (1).
6.4 Soft Start
(1) Setting value
• The setting values on the front panel setting (SET3 trimmer) become approx. 1 second at the fully counterclockwise position, and approx. 20 seconds at the fully clockwise position.
• The default value of the front panel setting (SET3 trimmer) is approx. 1 second.
(2) Note
• When all control SVs are changed, the output (actually the internal SV used in computational processing) is changed gradually according to this setting.
24
6.5 Current Limit
(1) Selecting the setting method
• The current limit can be set either with the front panel setting (SET4 trimmer) or the remote setting input (AI3) as shown in the following table.
Setting method
When the front panel setting is used (SET4 trimmer)
Setting terminals (6) to (9)
Setting of (DI3)
[Setting type (front/ remote) switching
Open
Short
Dip SW2 No. 3
[DI3 logical switching]
OFF
ON
Dip SW2 No. 6
[AI3 individual selection]
Any position
Any position
When the remote setting input is used (AI3)
(Example)
Open
Short
ON
OFF
ON
ON
To use the front panel setting (SET4 trimmer) only when the setting terminals (6) and (9) (DI3) are short-circuited, turn on No. 3 and No. 6 of the Dip SW2.
[Reference] Flowchart for the current limit value setting method selection
Setting of remote contact input [DI3] 6 9
(The logic of DI3 is switched by No. 3 of SW2.
When setting type (DI3) is
[front panel setting]
[DI3=Open(SW2No.3=OFF)]
[DI3=Short(SW2No.3 = ON)]
Setting of [SW2
No.6] of front panel
Dip switch
Front panel setting has priority.
Setting source of [current limit value] adopted
Front panel setting
[SET4] trimmer
When setting type (DI3) is
[remote setting input]
[DI3 =Short (SW2 No.3 = OFF)]
[DI3 =Open (SW2 No.3 = ON)]
Individual selection of remote setting input: When [current limit] is set by [front panel setting]
[SW2 No.6 = OFF]
Individual selection of remote setting input: When [current limit] is set by [remote setting input]
[SW2 No.6 = ON]
Remote setting input
[AI3]
2
5
1
(2) Setting (SET4 trimmer) on the front panel
• The setting values of the front panel setting (SET4 trimmer) become 0% at the fully counterclockwise position and 100% at the fully clockwise position.
• Turn the trimmer with a thin flat screwdriver while monitoring the output to adjust to the desired value.
• The default value of the front panel setting (SET4 trimmer) is 100%.
(3) Setting (AI3) using the remote setting input
• Adjust the remote setting unit while monitoring the output to adjust to the desired value.
• The setting value becomes 0% at 0V, and 100% at 2.5V of the voltage applied between setting terminals (5) and (1).
(4) Activating the function
• After completing the setting, turn on the front panel setting (Dip SW1 No. 1) to activate the current limit.
(5) Note
• This function cannot be used with the zero-cross control.
• A CT is needed for using the current limit. Connect a CT matching the rated current.
• The current value used for assessment is the average value of the three-phase load current values. This function cannot be applied to an individual phase.
25
6.6 Heater Disconnection Alarm
(1) Preparation
• Enter the SV (desired value) used in normal control and run this instrument until the control stabilizes.
The load current must be 10% or more of the rated current.
(2) Storing the initial resistance
• When the load current is stabilized, set the front panel setting (Dip SW1 No. 3) to ON to store the initial resistance value in memory.
• When the initial resistance value is stored normally, “EV1” in the status display on the front panel flashes for a few seconds.
If “EV1” does not flash, the load current is too low to calculate the resistance value. Be sure to set the load current in the normal control range before retrying the storage operation.
• When “EV1” flashes after the switch is set to ON, immediately set the switch to OFF. Make sure to set it to OFF.
(3) Ratio setting
• Set the disconnection ratio using the following formula.
Ratio = { (Disconnection detection target resistance – Initial resistance) ÷ Initial resistance } × 100
• The setting values on the front panel setting (SET5 trimmer) become 10% at the fully counterclockwise position and 100% at the fully clockwise position.
• The default value of the front panel setting (SET5 trimmer) is 100%.
(4) Activating the function
• After completing the setting, set the front panel setting (Dip SW1 No. 2) to ON to activate the heater disconnection alarm.
(5) Note
• The load resistance value is not the resistance of the heater alone, but represents the approximate synthesized resistance between phases. This means that it does not allow the user to identify deterioration or disconnection of the heater, and it can be used only as reference information.
• Do not apply this function to a heater, of which heater resistance varies significantly (such as a silicone carbide
SiC heater). Otherwise, erroneous alarms may activate.
• A CT is needed for assessment of heater disconnection. Connect a CT matching the rated current.
• A dead band (a delay time of approx. 2 min.) is provided for alarm OFF assessment.
• The initial resistance value should be stored while the load current is within the normal control range.
• After storing the initial resistance value, be sure to return the Dip switch to OFF.
• Activation of the heater disconnection alarm is started by totalizing the period in which the output (actually the internal SV used in computational processing) exceeds 10% or more and when the total period exceeds the detection period (Default: 1 minute).
• The alarm assessment is not performed when this instrument stops running.
6.7 Imbalance Adjustment
6.7.1 Outline
The imbalance adjustment function is used to adjust an imbalanced status to a balanced status. The adjustment is possible within a limited range based on either the voltage or current value.
First, select the voltage or current according to the control system. Then set No. 7 of the Dip SW1 to ON to activate the imbalance adjustment function, and adjust it using the following three trimmers.
• SET7 trimmer: Output gain. The adjustment range is from 60% at the fully counterclockwise (decrease direction) position to 140% at the fully clockwise (increase direction) position.The default value is 100%.
• SET8 trimmer: V phase output timing. The adjustment range is from -40% at the fully counterclockwise (decrease direction) position to 40% at the fully clockwise (increase direction) position.The default value is 0%.
• SET9 trimmer: W phase output timing. The adjustment range is from -40% at the fully counterclockwise (decrease direction) position to 40% at the fully clockwise (increase direction) position.The default value is 0%.
*The adjustment range is the output timing and differs from the adjustment ranges of the actual output voltage and current.
WARNING To prevent an accident, turn this instrument off before connecting a voltmeter or ammeter.
CAUTION
(1)Adjust the adjustment trimmers by turning them slowly while monitoring the measured value.
(2) When an adjustment trimmer is turned, the over-current alarm or rapid-break fuse meltdown alarm may activate due to the change of output.
(3)After the adjustment, be careful not to turn any adjustment trimmers during normal use.
26
6.7.2 Imbalance adjustment with voltage
(1) Preparation
• Connect three RMS type measuring units between each phase to measure the voltage values (U2-V2,
V2-W2, W2-U2) between each phase.
• Turn this instrument ON, enter the SV (desired value) used in normal control, and run this instrument until the control stabilizes.
• Set the SET7, SET8 and SET9 trimmers to the center positions.
(2) Activating the function
• Set the front panel setting (Dip SW1 No. 7) to ON to activate the imbalance adjustment.
(3) Output gain adjustment 1
• After the output has stabilized, reduce the outputs of the three phases by about 10% to ensure the safety of adjustment.
• Turn the SET7 trimmer (output gain) slowly counterclockwise while monitoring the voltage values on the measuring units so that the highest voltage values in the three phases is about –10% of the voltage value corresponding to the SV.
(4) Imbalance adjustment
• While monitoring the voltage values on the measuring units, turn the SET8 trimmer (V phase output timing) and SET9 trimmer (W phase output timing) slowly and alternately so that the voltage values of the three phases are almost the same.
(5) Output gain adjustment 2
• When the voltage values of the three phases are almost same, turn the SET7 trimmer (output gain) slowly clockwise so that the voltage value of each phase becomes the voltage value corresponding to the SV (desired value).
• Fine-adjust the SET8 trimmer (V phase output timing) and SET9 trimmer (W phase output timing) as required.
(6) Note
• Using the RMS type measuring units (3 units), adjust voltage values by monitoring the measured values they display.
• This function cannot be used with the zero-cross control.
6.7.3 Imbalance adjustment with current
(1) Preparation
• Connect three RMS type measuring units between each phase to measure the current values (U2, V2, W2) between each phase.
• Turn this instrument ON, enter the SV (desired value) used in normal control, and run this instrument until the control stabilizes.
• Set the SET7, SET8 and SET9 trimmers to the center positions.
(2) Activating the function
• Set the front panel setting (Dip SW1 No. 7) to ON to activate the imbalance adjustment.
(3) Output gain adjustment 1
• After the output has stabilized, reduce the outputs of the three phases by about 10% to ensure the safety of adjustment.
• Turn the SET7 trimmer (output gain) slowly counterclockwise while monitoring the current values on the measuring units so that the highest current values in the three phases is about –10% of the current value corresponding to the SV (desired value).
(4) Imbalance adjustment
• While monitoring the current values on the measuring units, turn the SET8 trimmer (V phase output timing) and SET9 trimmer (W phase output timing) slowly and alternately so that the current values of the three phases are almost the same.
(5) Output gain adjustment 2
• When the current values of the three phases are almost the same, turn the SET7 trimmer (output gain) slowly clockwise so that the current value of each phase becomes the current value corresponding to the SV
(desired value).
• Fine-adjust the SET8 trimmer (V phase output timing) and SET9 trimmer (W phase output timing) as required.
(6) Note
• Using the RMS type measuring unit (3 units), adjust current values by monitoring the measured values they display.
• This function cannot be used with the zero-cross control.
• Connect a CT matching the rated current.
27
6.8 Imbalance Alarm
(1) Preparation
• Enter the SV (desired value) used in normal control, and run this instrument until the control stabilizes.
The load current must be 10% or more of the rated current.
• When the load current stabilizes, perform imbalance adjustment if necessary.
(2) Rate setting
• Calculate and set the value (imbalance ratio) with the following formula.
Imbalance rate = { (Load current max value - Load current min value) ÷ Load current max value } × 100
* Load current max value: Maximum value among the load current values of three-phase (U-phase, V-phase,W-phase)
* Load current min value: Minimum value among the load current values of three-phase (U-phase, V-phase,W-phase)
• The setting values on the front panel setting (SET6 trimmer) become 1% at the fully counterclockwise position and 40% at the fully clockwise position.
• The default value of the front panel setting (SET6 trimmer) is 40%.
(3) Activating the function
• After completing the setting, set the front panel setting (Dip SW1 No. 4) to ON to activate the imbalance alarm function.
(4) Note
• This function assesses the imbalance rate of the load current.
• This function cannot be used with the zero-cross control.
• A CT is needed for the assessment of the imbalance rate. Connect a CT matching the rated current.
• A dead band (a delay time of approx. 2 min.) is provided for assessment of alarm OFF.
• Activation of the imbalance alarm is started by totalizing the period in which the output (actually the internal SV used in computational processing) exceeds 10% or more and when the total period exceeds the detection period (Default: 1 minute).
• The alarm assessment is not performed when this instrument stops running.
6.9 Alarm Output Forced OFF
When the alarm activates, AL1 or AL2 is turned on as an alarm output. It is possible to turn it off manually.
In addition, AL3 is turned off at the alarm activation, but it is possible to force it on.
(1) Setting
• The alarm output relays for AL1 and AL2 are set to OFF when the front panel setting (Dip SW 1 No. 5) is set to
ON. In addition, the alarm output relay for AL3 is set to ON.
• The alarm output relays for AL1 and AL2 are not set to ON until the front panel setting (Dip SW 1 No. 5) is set to OFF. In addition, the alarm output relay for AL3 is not set to OFF.
(2) Note
• Even when the alarm output is forced to OFF, the status LED display on the front panel indicates the alarm activation.
• During the initial operation (period until the normal start-up is executed) at the start-up, the alarm output relay for AL3 is turned OFF even when the alarm output is forced to OFF.
6.10 Feedback Control OFF
In the case of instruments with the feedback control specification, the feedback control function can be forced to OFF.
(1) Setting
• The feedback control function is disabled when the front panel setting (Dip SW 1 No. 6) is set to ON.
(2) Note
• This function is not available with models with no-feedback specification or zero-cross control specification.
• If this function is switched during operation, the output (actually the internal SV used in computational processing) starts from 0%. (This instrument resets.)
• When this function is executed, the alarm output relay for AL3 is turned OFF temporarily.
(When this instrument starts up normally after resetting, the alarm output relay for AL3 is turned ON again.)
28
6.11 Dip switch Functions
There are two Dip switches for various settings on the front panel. Set them as required.
1. Dip SW1
No.
4
5
6
7
1
2
3
8
Function
Current limit ON/OFF. By switching to ON, the current limit activates.
Heater disconnection alarm ON/OFF. By switching to ON, the heater disconnection alarm activates.
Storage of the initial resistance value for heater disconnection alarm. By switching to ON, the initial resistance is stored 1 time only.
• Be sure to set the switch to OFF in normal running and after value is stored.
Imbalance alarm ON/OFF. By switching to ON, the imbalance alarm activates.
Alarm output forced OFF. By switching to ON, the alarm output forced OFF activates.
Feedback control ON/OFF. By switching to ON, the feedback control becomes “disabled”.
Imbalance adjustment ON/OFF. By switching to ON, the imbalance adjustment activates.
Initialization. When the power is supplied to this instrument, the initialization of setting values activates.
(The internal memory of this instrument is reset to the factory default.)
• Be sure to set the switch to OFF in normal running and after initialization.
Default
(Factory set)
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
2.
Dip SW2
No.
Function
Default
(Factory set)
1
2
Logical switching of remote contact input 1 (DI1) setting terminals (6) and (7) (Run/Stop)
SW2 (No.1) and remote contact input 1 (DI1) status
SW2 (OFF), remote contact input (Open)
SW2 (OFF), remote contact input (Short)
SW2 (ON), remote contact input (Open)
Operation mode
Run
Stop
Stop
SW2 (ON), remote contact input (Short) Run
Logical switching of remote contact input 2 (DI2) setting terminals (6) and (8) (Phase/Zero-cross)
SW2 (No.2) and remote contact input 2 (DI2) status Operation mode
SW2 (OFF), remote contact input (Open)
SW2 (OFF), remote contact input (Short)
SW2 (ON), remote contact input (Open)
SW2 (ON), remote contact input (Short)
Phase angle control
Zero-cross control
Zero-cross control
Phase angle control
OFF
OFF
3
4
5
* The control system cannot be switched with the zero-cross control type.
Logical switchingof remote contact input 3 (DI3) setting terminals (6) and (9) (Front panel/Remote setting input)
SW2 (No.3) and remote contact input 3 (DI3) status Selection *
SW2 (OFF), remote contact input (Open) Front panel setting (SET trimmer)
SW2 (OFF), remote contact input (Short)
SW2 (ON), remote contact input (Open)
SW2 (ON), remote contact input (Short)
Remote setting input (AI)
Remote setting input (AI)
Front panel setting (SET trimmer)
Individual selection of remote setting input (AI1): Slope
SW2 (No.4) status
SW2 (ON)
SW2 (OFF)
Individual selection of remote setting input (AI2): Elevation
SW2 (No. 5) status
SW2 (ON)
SW2 (OFF)
Selection
Remote setting input (AI1)
Frontpanelsetting (SET1 trimmer)
Selection
Remote setting input (AI2)
Frontpanelsetting (SET2 trimmer)
OFF
OFF
OFF
6
7
8
Individual selection of remote setting input (AI3): Current limit
SW2 (No. 6) status
SW2 (ON)
SW2 (OFF)
Selection of supply voltage for actual use
Selection
Remote setting input (AI3)
Frontpanelsetting (SET4 trimmer)
SW2 (No.7, No.8) status
No.7 (ON), No.8 (ON)
No.7 (ON), No.8 (OFF)
No.7 (OFF),No.8 (ON)
No.7 (OFF), No.8 (OFF)
Selection
To prevent malfunction, do not select the switch status of “Not used.”
240V/Not used
220V/440V
200V/400V
Not used/380V
OFF
No.7: OFF
No.8: ON
200V line:
200V
400V line:
400V
* When the selection state of SW2 No. 3 and the remote contact input 3 (DI3) is by [Front panel setting (SET trimmer)], the slope, elevation and current limit are set by the front panel setting regardless of No.4, No.5 and
No.6 settings of SW2.
29
7 Running
7.1 Check before Running
WARNING
(1) To prevent an accident, be sure to turn this instrument off before proceeding to the following operations.
(2) The withstand voltage test should be performed by personnel with sufficient knowledge and practical experience of such testing.
1. Checking the installation orientation
Check that this instrument is installed with the UP (↑) mark facing upward. Otherwise, the heat radiation effect will be hindered, and the rise in internal temperature may cause malfunction.
2. Checking the connections
Check if wiring is correct, the short circuit plates are connected properly, the connections are secure, etc.
Particularly, check if the main circuit terminals such as the power supply terminals are securely tightened.
This instrument and peripheral equipment (such as the transformer) might be damaged in the case of non-load running. Check that the load is connected before running.
3. Checking the balanced status
Check that the power voltages between each phase and loads between each phase are balanced. If they are too imbalanced, errors in the input/output characteristics of this instrument will increase, deteriorating control.
4. Checking the power voltage and load capacity
Check once again that the power voltage and load capacity are appropriate for the ratings of this instrument.
5. Checking the insulation
Check the insulation of the load circuit as required. Use a 500V megger for the measurement of insulation resistance.
When performing the withstand voltage test, short-circuit all of “U1 and U2,” “V1 and V2” and “W1 and W2” of the main circuit terminals. As the withstand voltage test could degrade this instrument and injure the test personnel, it should be conducted with the minimum required voltage. The test voltage must be lower than
1500VAC.
6. Setting the power voltage
Set the Dip SW2 on the front panel to set the power voltage of actual use as shown below.
Check the rated voltage of the
PA-3000-H3 and the actual power voltage.
Power voltage 200V
200 V
220 V
Set Nos. 7 and 8 of SW2 according to the actual power voltage.
Set No. 7 to “OFF” and No. 8 to “ON”.
Set No. 7 to “ON” and No. 8 to “OFF”
Power voltage 400V
240 V
380 V
400 V
440 V
Set No. 7 to “ON” and No. 8 to “ON”
Set No. 7 to “OFF” and No. 8 to “OFF ”
Set No. 7 to “OFF” and No. 8 to “ON”
Set No. 7 to “ON” and No. 8 to “OFF”
7. Checking the control system and parameter settings
Check the control system (phase angle control, zero-cross control, feedback, etc.) and the parameters set on the front panel.
8. Other checking
Check other items by reading warnings and cautions described in this instruction manual.
30
7.2 Start of Operation
WARNING
(1) Do not approach the terminals (main circuit terminals and setting terminals) of this instrument. Electric shock due to the high-voltage parts is hazardous to human life.
(2) This instrument has high-temperature parts. Particularly, do not touch the top panel, side panels, heat radiation fins, etc.
(3) Do not allow a finger, stick or any object to enter or drop into the cooling fan area. The cooling fan(s) are rotating at a high speed and may cause injury or damage.
1. Turn the system ON. If possible, set the manual run or control input signal to 0% so that this instrument maintains the 0% output when it is turned ON.
2. Check that the system components including this instrument are in working order .
Also, check that all of the connected signal levels (voltages, current, ON/OFF signals, etc.) are normal.
When your instrument comes with a built-in cooling fan, check that the cooling fan rotates normally.
3. Check that the power voltages between each phase and loads between each phase are balanced.
4. Switch to the auto run (or keep manual run), start the control and observe the operation.
5. There is no problem when the control is stable. If it is unstable, adjust the controller’s parameters (particularly the PID constants) and this instrument’s parameters (particularly the slope).
6. Set the parameters as required.
7. In a few hours after the start of operation, check again that the system components including this instrument are normal.
8. When stable control is established, it is recommended to record (save) the settings including those of this instrument.
CAUTION
(1) Never run this instrument without load. Non-load running may result in damage to this instrument and/or peripheral equipment (such as the transformer).
(2) Check the signals of the peripheral equipment connected to this instrument. Applying an over-voltage or over-current may damage the internal circuitry of this instrument.
(3) Never switch the load (switching the load connection by a relay, a magnet, etc.). The switching of load may result in damage to this instrument and/or peripheral equipment.
31
7.3 Status Display
Whilst running, the EV (Event) indicators of status display on the front panel indicate various Events & other status including running status and alarm activation status.
Status display
Trimmers SET1 to SET6
Dip switch SW1
Dip switch SW2
No.
EV1
(Green)
Trimmers SET7 to SET9
Front panel
Description
This indicates running status. Lights for normal running, and flashes when the running becomes abnormal.
The indicator also flashes in the following cases.
(1) When the setting values are initialized (the internal memory is reset to the factory default);
→ Stops flashing after the initialization of setting values is completed.
(2) If No. 8 of the Dip SW1 is set to ON when power-on (initialization of setting values);
→ Be sure to set the Dip switch to OFF .
(3) During storage of the initial resistance value for the heater disconnection alarm;
→ Starts flashing after the start of storage, and stops flashing after a few seconds.
Lights when the over-current alarm is activated, and flashes when the heater disconnection alarm is activated.
Lights when the rapid-break fuse meltdown alarm is activated, and flashes when the abnormality alarm for the thyristor element is activated.
Lights when the overheating abnormality alarm for the heat radiation fin is activated.
EV2
(Red)
EV3
(Red)
EV4
(Red)
EV5
(Red)
EV6
(Red)
EV7
(Green)
EV8
(Green)
EV9
(Green)
Lights when the phase-sequence abnormality alarm is activated, and flashes when the open-phase detection alarm is activated.
Note: For these 2 alarms above and frequency abnormality alarm, definite determination/discrimination of alarm status cannot be performed. Use them for your reference.
When any one of these alarms is ON, check the phase-sequence abnormality, the open-phase or the frequency abnormality.
Lights when the frequency abnormality alarm is activated, and flashes when the imbalance alarm is activated.
Interlocks with EV2 to EV6 and provides the display-by-phase “U (U-V)” showing the applicable phase.
Interlocks with EV2 to EV6 and provides the display-by-phase “V (V-W)” showing the applicable phase.
Interlocks with EV2 to EV6 and provides the display-by-phase “W (W-U)” showing the applicable phase.
CAUTION
• When multiple alarms activate simultaneously, the alarm types may not be determined due to overlapped lighting of the EV indicators. The display-by-phase may also not be performed. Furthermore, when the display-by-phase is performed, certain display-by-phase indications may not be discernible.
• All status display indicators light temporarily when this instrument is turned ON or the control system is switched.
32
8 ALARM
8.1 Alarm Activation and Alarm Output
Alarm name Status display Alarm output
Over-current alarm
Rapid-break fuse meltdown alarm
Radiation fin overheat alarm
Heater disconnection alarm
Thyristor element abnormality alarm
• EV2 lights and one of EV7 to EV9 lights to indicate the phase in alarm.
• In case of the over-current alarm, even when the current value has returned within the rated current range after the alarm activation, the alarm cannot be cancelled until this instrument is turned off then on. (Latched output)
• EV3 lights and one of EV7 to EV9 lights to indicate the phase in alarm.
• This alarm activates only in the instrument with the rapid-break fuse.
• EV4 lights.
• EV2 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
• EV3 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
AL1
AL1
AL1
AL2
AL2
Running abnormality alarm
Phase-sequence abnormalities alarm
Open-phase alarm
Imbalance alarm
Frequency abnormality alarm
• EV1 flashes.
• This alarm is cancelled automatically in about 1 minute after the alarm activation. It can also be cancelled by turning this instrument off then on.
• EV5 lights.
• EV5 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
• EV6 flashes and one of EV7 to EV9 lights to indicate the phase in alarm.
• EV6 lights.
None
AL3
AL3
AL2
AL3
* Even when the alarm outputs are OFF, they may be turned ON momentarily when this instrument is turned OFF/ON. If required, take countermeasures externally against such error outputs.
* The alarm output relay for AL3 is turned OFF during the initial operation (period until the normal start-up is executed) at the start-up. The relay is turned ON after the normal start-up, and it is turned OFF when the alarm for phase-sequence abnormality, the open-phase or a frequency abnormality is activated.
8.2 Alarms and Countermeasures
Alarm name
Over-current alarm
Rapid-break fuse meltdown alarm
Radiation fin overheat alarm
Heater disconnection alarm
Thyristor element abnormality alarm
Running abnormality alarm
Phase-sequence abnormalities alarm
Open-phase alarm
Imbalance alarm
Frequency abnormality alarm
Running status
Running stops.
(Thyristor gate OFF)
Running stops.
(Thyristor gate OFF)
Running stops.
(Thyristor gate OFF)
Running continues.
Running continues.
Running continues.
Running stops.
(Thyristor gate OFF)
Running stops.
(Thyristor gate OFF)
Running continues.
Running stops.
(Thyristor gate OFF)
Countermeasures
Turn this instrument OFF, identify the cause and take countermeasures against it, and then turn this instrument ON again. This instrument will recover.
Turn this instrument OFF, identify the cause and replace the fuse, and then turn this instrument ON again. This instrument will recover.
Check that the cooling fan(s) of the power controller is rotating normally and that the ambient temperature is not abnormally high, and then turn this instrument ON again.
If the fan(s) is malfunctioning, turn this instrument OFF, replace the fan(s) and turn this instrument ON again. This instrument will recover.
Turn this instrument OFF and check the heater, etc.
This alarm may also activate when the CT is not connected to the power controller.
Turn this instrument OFF and check the load and connections. If it still does not recover, repair of this instrument is required.
Turn this instrument OFF then ON again. If it still does not recover, repair of this instrument is required.
The connections of the three phases (U, V, W) are not correct. Turn this instrument OFF and correct the connections, and then turn this instrument ON again. This instrument will recover.
One of the connections of the three phases (U, V, W) is disconnected:
Turn this instrument OFF and correct the connections, and then turn this instrument ON again. This instrument will recover.
Turn this instrument OFF and check the power voltage, load, heater, etc.
Turn this instrument OFF and check the power voltage, noise, etc.
Especially, in case of an abnormal voltage waveform by noise, the correct control cannot be performed. Take appropriate countermeasures against it.
33
9 SYSTEM PROTECTION
9.1 Power safety
To protect this instrument from abnormal voltage (surge voltage) superimposed in the power, install a lightning rod or spark killer at the power source. The following lightning rods and spark killer are recommended.
Lightning rod 200V power line : MAK2-220 [M-system Co., Ltd.]
Lightning rod 400V power line : MAK2-400 [M-system Co., Ltd.]
Spark killer : 3CRH-50270 [Okaya Electric Industries Co., Ltd.]
9.2 Protection by alarm output 3
The alarm output 3 (AL3) is mainly for power related alarms. (The alarm output relay is turned OFF at the alarms activation.)
When this instrument has a fatal malfunction (burnout, etc.), alarm output 3 will usually go OFF. Specifically, alarm output 3 is turned OFF when the following problems occur in this instrument.
(1) Melting of the fuse for the receiving board of R-phase or S-phase → Control circuit power OFF → Alarm output 3 OFF
(2) Melting of the fuse for the receiving board of T-phase → W-phase open-phase occurrence → Alarm output 3 OFF
(3) Synchronizing transformer disconnection → Phase-sequence abnormality occurrence → Alarm output 3 OFF
(4) Synchronizing signal input portion burnout →Control circuit power OFF/Open-phase occurrence/phase-sequence abnormality occurrence → Alarm output 3 OFF
• Fuse for receiving board: This is for protecting the synchronizing signal input portion (control circuit power input portion), and is built -in for models with a rated current of 75A or more.
• Synchronizing transformer: For detecting the timing of the zero-cross of power.
We recommend that you will take measures, using the above, to avoid widespread system damage or serious malfunction.
The following figure shows a wiring example of system using the alarm output 3.
Magnet contactor
Breaker
Setting terminals (CT)
21 22 23 24 25 26
PA-3000-3H
Do not connect the secondary side of the CT to ground.
3-phase power
R
SW1 SW2
Lightning rod
K L K L K L
U1
Main circuit terminals
U2
K
CT1
L
CT
R1
Load transformer
LOAD
SA1
SA2
S
V1 V2
K L
TR2
CT2 R2 R3
T
CR1
Spark killer
PLC1
PLC
SA3
W1
SA4
SA5
SA6
Protective conductor (ground)
DI1
AL1
AL2
AL3
Contact
Contact
Contact
Contact
13
28
14
29
15
30
Setting terminals
7
6
16
17
18
19
20
W2
K
CT3
L
Dummy resistor
4 ~ 20mA
Controller
Wiring example of system using alarm output 3
34
The following are details of components of the wiring example shown in Sec. 9.2.
Mark
PA-3000-H3
PLC1
SW1
SW2
CR1
SA1~SA3
SA4~SA6
CT1~CT3
R1~R3
TR2
LOAD
Name
Power controller
PLC
Breaker
Magnet conductor
Spark killer
Lightning rod
Lightning rod
Current transformer
Dummy resistor
Load transformer
Load (Heater)
Outline
This instrument
Monitors any abnormality of this instrument and protects the whole system by turning off the magnet conductor when an abnormality occurs.
This is a breaker for protecting the whole system.
Separates the system from the power source when a system abnormality occurs.
Conductor ON/OFF is controlled by the PLC.
Protects this instrument from abnormal voltage (surge voltage) superimposed in the power.
Protects this instrument from abnormal voltage (surge voltage) superimposed in the power.
Make sure to install a lightning rod for external transformer specifications.
Protects this instrument from an abnormal voltage (surge voltage) superimposed to the power.
For models without CT, connect a CT externally if required.
(The over-current cannot be detected in this instrument without the CT.)
Make sure to install the resistor for the transformer load.
Design the load so that 0.5A or more of current flows in each phase.
Use the transformer with a flux density of 1.2 (T) or less and with sufficient capacity.
The secondary load of the transformer should be a three-phase balancing load (Imbalance ratio: About 10% or less).
The following flowchart is an example of the system operation sequence when alarm output 3 (AL3) is used.
The whole system is protected by separating the power from the system when an instrument abnormality occurs.
Start
SW2 (magnet): OFF
SW1 (breaker): ON
DI1: ON (output stop)
Turn the power on by setting SW2 (magnet) ON.
* This instrument is set to “Stop” with DI1 being ON.
(No. 1 of Dip SW2 on the front panel: OFF)
Waits for about 3 seconds for the initialization at the start-up of this instrument
* When this instrument starts up normally, AL3 is turned on.
(Normal start-up)
AL3=OFF?
No
AL1=ON?
No
AL2=ON?
No
By turning off DI1, operation starts.
Yes
(Fatal trouble or power abnormality)
Yes
(Over-current, rapid-break fuse melting or heat-sink overheat)
Yes
(Thyristor element abnormality)
(Normal)
AL3=OFF?
No
Yes
(Fatal malfunction or power abnormality)
SW2 (magnet) is turned off. (Power shutoff)
DI1 is turned on. (Output stop)
Stop of abnormality
35
The following is an example of the operation chart when using alarm output 3 (AL3).
[Normal]
(1) (2) (3) (4)(5)(6)(7)(8) (9)
SW2
DI1
ON (power-on)
OFF (power-off)
ON (stop)
OFF (run)
AL1 ON (Over-current, etc.)
OFF (normal)
AL2 ON(elementabnormal)
OFF (normal)
AL3
ON (normal)
OFF (malfunction)
(1) : Turn on DI1 to stop this instrument.
(2) : Turn on SW2 to turn the power on.
(2)~(3): Waiting for linearization at start-up of this instrument
(3) : When this instrument starts up normally,AL3 is turned on.
(4) : Check the states of AL1, AL2 andAL3.
(AL1 = OFF,AL2 = OFF,AL3 = ON: Normal)
When these are normal, turn off DI1 for starting operation.
(4)~ : Check the state ofAL3 constantly during operation.
Normal whenAL3 remains in ON status.
[Start-up abnormality I]
SW2
ON (power-on)
OFF (power-off)
DI1
ON (stop)
OFF (run)
AL1 ON (Over-current, etc.)
OFF (normal)
AL2 ON (elementabnormal)
OFF (normal)
AL3
ON (normal)
OFF (malfunction)
(1) (2) (3) (4)(5)(6)(7)(8) (9)
[Start-up abnormality II]
SW2
ON (power-on)
OFF (power-off)
DI1
ON (stop)
OFF (run)
AL1 ON (Over-current, etc.)
OFF (normal)
AL2 ON (elementabnormal)
OFF (normal)
AL3
ON (normal)
OFF (malfunction)
(1) (2) (3) (4)(5)(6)(7)(8) (9)
(1) : Turn on DI1 to stop this instrument.
(2) : Turn on SW2 to turn the power on.
(2)~(3) : Waiting for linearization at start-up of this instrument
(3) : AL3 remains in OFF as this instrument does not start up normally.
(4) : Check the states of AL1, AL2 andAL3.
(AL1 = OFF,AL2 = OFF,AL3 = ON: Normal)
As AL3 remains in OFF status, this instrument will assume a malfunction.
Turn off SW2 for power-off, ending abnormality.
(1) : Turn on DI1 to stop this instrument.
(2) : Turn on SW2 to turn the power on.
(2)~(3) : Waiting for linearization at start-up of this instrument
(3) : This instrument starts up and AL3 is turned on, butAL2 is turned on by malfunction of the thyristor element.
(4) : Check the states of AL1, AL2 andAL3.
(AL1 = OFF,AL2 = OFF,AL3 = ON: Normal)
As AL2 is ON, this instrument will assume a malfunction.
. Turn off SW2 for power –off, ending abnormality.
[Operation abnormality]
SW2
ON (power-on)
OFF (power-off)
DI1
ON (stop)
OFF (run)
AL1 ON (Over-current, etc.)
OFF (normal)
AL2 ON (elementabnormal)
OFF (normal)
AL3
ON (normal)
OFF (malfunction)
(1) (2) (3) (4)(5)(6)(7)(8) (9)
(1) : Turn on DI1 to stop this instrument.
(2) : Turn on SW2 to turn the power on.
(2)~(3) : Waiting for linearization at start-up of this instrument
(3) : When this instrument starts up normally,AL3 is turned on.
(4) : Check the states of AL1, AL2 andAL3.
(AL1 = OFF,AL2 = OFF,AL3 = ON: Normal)
When these are normal, turn off DI1 for starting operation.
(4)~ : Check the state ofAL3 constantly during operation.
(5) : By malfunction of this instrument,AL3 is turned off.
(6)As AL3 is turned off, this instrument will assume a malfunction.
Turn off SW2 for shutting off power
Turn on DI1 to stop this instrument &to end abnormality.
9.3 Installation environment
Select a place satisfying conditions in Section 3.2 [Installation precautions] as an installation environment of this instrument. In environmental conditions exceeding the specification ranges, short-circuit/burnout accidents may occur inside this instrument. Especially, never use this instrument in an environment with conductive material, mine dust or unusual substances (metal powder, cut glass, iron or carbon).
When this instrument is used under a special environmental condition such as using a carbon heater, etc., take the following measures at the control panel.
1. Design the control panel with a sealed structure and take heat radiation measures.
2. Apply an air purge to the control panel.
3. Perform periodical cleaning.
36
10 TROUBLESHOOTING
Problem
1. No output (0%).
2. Continuous output (100%).
Check Items
(1) Check that the connections of the main circuit terminals are correct.
• Connect U1, V1 and W1 to the 3-phase power supply (R, S and T), and connect U2, V2 and W2 to the load (such as a heater).
• Confirm the phase-sequence of the 3-phase power supply with a phase detector and that the connections are in a positive-phase-sequence.
(2) Check that the connections of the setting terminals are correct.
• Confirm that the correct signal is connected to the control input signal.
• Manually confirm that the output varies.
(3) Check that the parameter settings are correct.
• Confirm that the running status is not set to “Stop.”
• Confirm that the slope setting is not “0%.”
• Confirm that the current limit setting is not “0%.”
(4) Check that the following alarms are not ON.
• Over-current alarm
• Rapid-break fuse meltdown alarm
• Heat radiation fin overheat alarm
• Phase-sequence abnormalities alarm
• Open-phase alarm
• Frequency abnormality alarm
(5) Check that the power supply is not interfered with by noise.
• When there is strong noise, a frequency abnormality is assumed and the output becomes 0%. Noise countermeasures are required in such a case.
(6) In models with rated currents of 75A or more, the fuse for the receiving board may have melted if the following occurs.
• When the power of this instrument is not turned on (The status indicator EV1 does not light even if the power is turned on.), or
• When the alarm for the open-phase, phase-sequence abnormality or frequency abnormality is activated
Check if the fuse for the receiving board has melted and replace it if necessary. (Refer to Section 11.4.)
When the fuse for the receiving board melts, an abnormality at the power source is a possible cause. Add a protection circuit at the power source. (Refer to Section 9.1.)
If this instrument is used with a melted fuse, additional damage may occur. Additionally, if the fuse has melted down though a protection circuit has already been added, do not use this instrument as this environment is not suitable for use.
(1) Check that the following connections are correct.
• Confirm that the load is connected correctly.
If the load is too light, the output is generated continuously.
• With the current or power feedback type, confirm that the CT is connected properly.
• Confirm that the correct signal is connected to the control input signal.
(2) Check that the parameter settings are correct.
• Confirm that the elevation setting is not “100%.”
37
Problem
3. Output does not vary correctly.
Check Items
(1) Check that the following connections are correct.
• Confirm the phase-sequence of the 3-phase power supply with a phase detector and the connections are in a positive-phase-sequence.
• With the current or power feedback type, confirm that the CT is connected properly. Make sure that the secondary side of the CT is not grounded.
• Confirm that the correct signal is connected to the control input signal.
(2) Check that the power waveform is normal.
• If the power waveform contains noise or distortion, the output will not be proportional to the control input signal.
• If a private electric generator is in use, check the power voltage and power frequency. Particularly, make sure that the power frequency is either 50 Hz or 60 Hz.
(3) Check that the load is not imbalanced.
• If it is extremely imbalanced, the output will not be proportional to the control input signal.
Achieve a balanced status by correcting the power supply and/or load and performing the imbalance adjustment.
(4) Check that the parameter settings are correct.
• Confirm that the slope, elevation and soft start settings are correct.
4. This instrument malfunctions.
(1) Check all of the Check Items in 1 to 3 above.
5. Control output is different from the actual value on a measuring unit.
6. Output is generated even though control input signal is 0% or less.
(2) If there is still a problem in operation of this instrument, initialize set values. (Initializing its internal memory to the default settings).
• Turn this instrument OFF.
• Set No. 8 of the Dip SW1 on the front panel to ON.
• Turn this instrument ON.
• Confirm that the EV1 status display indicator on the front panel flashes.
• Set No. 8 of the Dip SW1 on the front panel to OFF.
• Now initialization is complete; see if the malfunction is recovered.
(1) Check that RMS type measuring units are used.
• For the measurement of the control output of the power controller , be sure to use RMS type or armature type measuring units. A rectifier type measuring unit cannot be used.
(1) Check the control input signal.
• Check if the input signal to the control input terminals does not fluctuate or noise is not superimposed.
(2) Check the length of wires.
• Make wires as short as possible.
Especially make the setting units and voltage signal wires short.
38
11 MAINTENANCE
11.1 Routine Inspection and Maintenance
WARNING
(1) To prevent an accident, be sure to turn this instrument off before proceeding to the following operations.
(2) To prevent burns, do not touch any hot parts, such as a heat radiation fin, immediately after turning this instrument OFF.
11.1.1 Inspection items
Inspect the following items in order to maintain this instrument in the best condition.
Item Description
Terminal bolts and screws
If the bolts of the main circuit terminals are loose, heat will be produced due to the large current and the wiring may be burnt out.
Be sure to inspect the tightness of the bolts and screws periodically.
Cooling fan(s)
Cleaning
Types with a rated current of 100 A or more are equipped with a cooling fan(s) on the top panel. Periodically inspect that there are no rotation irregularities or noise. Note that the cooling fan(s) is a consumable part that must be replaced periodically.
When this instrument is used in a dusty or dirty environment, the attached dust or dirt may degrade the insulation or cause other malfunctions. To prevent this, clean and remove dust or dirt periodically.
CAUTION
Never attempt to replace parts other than the cooling fan(s) and rapid-break fuse. You may not be able to replace other parts correctly and may also risk injury if you replace them. For the replacement of parts other than the cooling fan(s) and fuse, please contact your nearest distributor.
11.1.2 Consumables
The following shows the consumables and their replacement timing.
Name of parts
Cooling fan(s)
Printed circuit boards
Replacement interval
2 years
5 years
Operating conditions
• Normal working temperature
• 50% or less operating rates
39
11.2 Fuse Replacement
WARNING
(1) To prevent an accident, be sure to turn this instrument off before proceeding to the following operations.
(2) To prevent accidents, be sure to tighten the fuse with the specified torque when replacing it. Also, be sure that the new fuses are of the same specifications as the previous fuses.
When a rapid-break fuse melts, be sure to check the cause of melting and take proper countermeasures against it before replacing it. As the fuse may melt due to a malfunction of this instrument, it is necessary to check carefully.
The following shows the types of rapid-break fuses being used with this instrument. Confirm the specifications
(voltage and current) of the fuse being used, and be sure to replace it with the same fuse.
Rated voltage Rated current Fuse Rated current Fuse
200V AC
400V AC
30A
50A
75A
100A
150A
30A
50A
75A
100A
150A
Hinode Electric 250GH-50 S
Hinode Electric 250GH-75 S
Hinode Electric 250GH-100 S
Hinode Electric 250GH-160 S
Hinode Electric 250GH-200 S
Hinode Electric 660GH-50 S
Hinode Electric 660GH-80 S
Hinode Electric 660GH-100 S
Hinode Electric 660GH-160 S
Hinode Electric 660GH-200 S
200A
250A
300A
400A
500A
200A
250A
300A
400A
500A
Hinode Electric 250GH-315 S
Hinode Electric 250GH-350 S
Hinode Electric 250GH-450 S
Hinode Electric 250GHW-630 S
Hinode Electric 250GHW-710 S
Hinode Electric 660GH-315 S
Hinode Electric 660GH-350 S
Hinode Electric 660GH-450 S
Hinode Electric 660GH-630 S
Hinode Electric 660GH-710 S
Rated current: 30A/50A Rated current: 75A/100A
Rapid-break fuse
Micro switch
Rapid-break fuse
Micro switch
Rapid-break fuse
Tightening torque: 3 Nm
Rated current: 150A/200A/250A
Rapid-break fuse
Tightening torque: 5Nm
Rated current: 300A/400A/500A
Micro switch Micro switch
Tightening torque: 12 Nm Tightening torque: 25 Nm
• A micro switch to detect the melting-down of the rapid-break fuse is attached to the rapid-break fuse.
When replacing the rapid-break fuse, pull out the micro switch and reattach it to the rapid-break fuse after its replacement.
40
11.3 Cooling Fan Replacement
WARNING
To prevent an accident, be sure to turn this instrument off before proceeding to the following operations.
(1) Turn the power of this instrument off.
(2) Remove the cover, and unplug the fan(s) power cord connected to the fan.
(3) Replace the fan as shown below.
• Note that the type, number and installation method of cooling fans vary according to the rated current.
(4) Be sure to install the fan in the correct orientation when replacing it.
• The power cord can be connected in any position, but be sure to plug it in securely.
(5) Attach the cover by reversing the removal procedure.
(6) After replacement, turn the power of this instrument on, and ensure that all the cooling fans are rotating.
Finger guard
Cover
Fan
Fan power cord
M4 nut
41
11.4 Fuse Replacement for the receiving board
WARNING
To prevent an accident, be sure to turn this instrument off before proceeding to the following operations.
When the fuse for the receiving board has melted , make sure to check its cause and take measures before its replacement. In this case, sufficient checking is required since this instrument may be broken down.
Purchase the following fuse for the receiving board.
Fuse for receiving board: 500SF-04 [Made by Hinode Electric S.S,]
[Replacement procedures for receiving board fuses]
Three receiving board fuses are installed in the receiving board box inside this instrument.
Replace the fuse following these procedures.
(1) Turn the power of this instrument off.
(2) Remove the cover of the instrument.
(3) Remove the lid of the receiving board box.
Since the receiving board box is fixed with 4 hooks along the sides, unhook them for removing the lid.
(4) Remove the cover of the fuse for receiving box.
(5) The cover of the fuse for the receiving box is fixed to the precut holes of the printed board with hooks.
Hold the cover of the fuse for the receiving board lightly and pull it for removal.
(6) Replace the receiving box fuse.
Since the fuse for the receiving board is fixed to the fuse clip on the printed board, pull it for removing, and then insert the replacement fuse securely.
(7) For re-installing covers and lid, reverse the above procedures.
S-phase
Receiving board box
R-phase T-phase
Remove the cover and the lid of the receiving board box.
Fuse for the receiving board
Cover
42
12 GLOSSARY
12.1 Control Systems
12.1.1 Phase angle control
The phase angle control system controls the output by varying the conducting angle θ (ON timing) within
210 (3-arm operation) or 150 (6-arm operation) of the power frequency. Most power controllers employ this system.
This control is continuous compared to the zero-cross control ,and can be used in the primary side control of the transformer.
12.1.2 Zero-cross control
The zero-cross control system controls the output by defining ON/OFF for each power waveform cycle.
It generates less noise than the phase angle control. However, as the maximum current flows during the ON period and it is intermittent, the flickering phenomena (Example: Lighting flicker) may be generated.
The zero-cross control can use only a Nichrome heater. Do not use it for purposes other than the primary side control of a transformer and
Nichrome heater, otherwise, the over-current alarm will activate or the rapid-break fuse will be melted down.
The pulse interval corresponds to the output updating interval. For example, when the pulse interval is 1.5 sec. (default value) and the output is 50%, the ON/OFF waveform becomes as shown on the right.
0.75 sec.
0.75 sec.
Pulse interval
12.1.3 6-arm and 3-arm types
The “6-arm” type performs ON/OFF control of both the 1-side (positive) and 2-side (negative) gates of 1-power phase at the thyristor gate control. The “3-arm” type leaves the 2-side (negative) gate permanently ON. This instrument adopts the “6-arm”.
U V W
1 side (Positive)
2 side (Negative)
6-arm: ON/OFF
3-arm: ON/OFF
6-arm: ON/OFF
3-arms:Always ON
Load
Voltage
[6-arm control waveform]
Current
Voltage
Current
[3-arm control waveform]
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12.2 Feedback Types
12.2.1 Voltage feedback type
This type controls using the feedback of the voltage of the load, and is optimum for a heater with a low resistance-temperature characteristic as shown on the right (Nichrome heater, etc.).
Such a heater can be controlled stably by maintaining the output voltage from the power controller to a constant level.
This feedback can be used only with the phase angle control type.
Note) The voltage feedback type controls the average value of three-phase load voltage values. This type cannot control each phase individually.
Nichrome heater
Temp.
12.2.2 Current feedback type
This type controls using the feedback of the current of the load, and is optimum for a heater with a high resistance-temperature characteristic as shown on the right (Molybdenum disilicide heater, etc.).
Such a heater can be controlled stably by setting the maximum output of the power controller to the maximum rated current of the heater because this makes it possible to output the current in proportion to the control input signal regardless of changes in the resistance value.
This feedback can be used only with the phase angle control type.
Molybdenum disilicide heater
Temp.
Note) A CT is needed for using the current feedback type. Connect a CT matching the rated current.
The current feedback type controls the average value of three-phase load current values. This type cannot control each phase individually.
12.2.3 Power feedback type
This type controls using the feedback of the power of the load and is optimum for a heater, of which resistance varies according to the generated heat temperature and varies by nearly 4 times the initial resistance value over time
(silicon carbide heater, etc.).
Such a heater can be controlled stably by detecting both the voltage and current applied to the load and by feeding back the power multiplying them.
This feedback can be used only with the phase angle control type.
Silicon carbide (SiC) heater
Deterioration
Temp.
Note) A CT is needed for using the power feedback type. Connect a CT matching the rated current.
The power feedback type controls the power consumption of a load (whole power of three phases).
[ 3 x Average of three-phase load voltage values x Average of three-phase load current values]
This type cannot control each phase individually
44
12.3 Settings
12.3.1 Slope
100
80
60
40
20
100
80
60
40
20
The slope setting provides the output (actually the internal SV used for computational processing) with a slope (inclination). It is effective for example in an electric furnace with
3-zone control where 3 units of the power controller are operated by one controller unit.
0 20
12.3.2 Elevation
100
80
60
80%
60 %
40%
20%
40 60
Control input (%)
0%
40
20
80 100
The elevation setting provides the output (actually the internal SV used for computational processing) with a bias. For example, even when the controller output becomes minimum, a constant base power can be applied to an electric furnace, etc.
0 20 40 60 80 100
Control input (%)
12.3.3 Soft start
This function varies the output (actually the internal SV used for computational processing) gradually in order to prevent sudden change in the control output when this instrument is turned on or when the control input changes drastically. For example, a rush current can be suppressed in the case of a primary side control of transformer. With this instrument, the time to achieve SV from 0% to 100% can be set from approx.1 to 20 seconds.
In models without feedback, the change of output (time goal achievement of the SV from 0% to 100%) by the soft start becomes slightly faster since the actual change of output includes the operation time of the feedback control, etc.
12.3.4 Current limit
This function sets the maximum limit to the control current. For example, when the voltage feedback is used, the current flows according to the resistance of the load, and the rated current of the power controller may be exceeded if only the voltage control is used. The current limit function is used in such cases. The assessment value is the average value of three-phase load current values. This function cannot control each phase individually
The following shows an example of current limit.
100
80
70
60
40
20
Current limit 70%
(Note)
A CT is needed for using the current limit. Connect a CT matching the rated current.
0 20 40 60
Input (%)
45
80 100
12.3.5 Imbalance adjustment
For the 3-phase control, although it is desirable that the voltage and current values of the three phases are the same values (balanced status), they are actually not the same values due to the unreliability of the power supply and an imbalanced load (imbalanced status). When the imbalanced status is serious, controllability deteriorates as well as the overall reliability of the system.
The PA-3000-H3 series incorporates the imbalance adjustment function, adjusting the output value of each phase in a limited range in the case of an imbalanced status. This function solves the imbalanced status in a simulated manner and enables stable control. The imbalance adjustment is performed based on either the voltage or current.
12.4 Alarm
12.4.1 Over-current alarm
This alarm is turned ON when a current of 120% or more of the rated current flows.
As a current above the rated current of the power controller is flowing, check if the rated current of the power controller and load specifications are met.
(Note)
• A CT is needed for judging the over-current. Connect a CT matching the rated current.
12.4.2 Rapid-break fuse meltdown alarm
This alarm is turned ON when the rapid-break fuse is melted down because a current of 150% to 200% of the rated current flowed.
The melting of the rapid-break fuse clearly indicates a system error. Check the cause and take countermeasures.
(Note)
• This alarm is available only in the specification with a rapid-break fuse.
• The fuse meltdown indicates an abnormality. Be sure to check the cause and take countermeasures, and then replace the fuse with the same type of fuse.
12.4.3 Heat radiation fin overheat alarm
For the instrument with the rated current of 100A or more, this alarm is turned ON when the heat radiation fin temperature is abnormally high.
This alarm may be caused by a malfunction of the cooling fan(s), so these should be replaced.
(Note)
• This alarm is available only with instruments with a rated current of 100 A or more.
• The cooling fan(s) should be replaced. Be sure to replace it with the same type of fan(s).
12.4.4 Heater disconnection alarm
This alarm is turned ON when the load resistance exceeds the set disconnection ratio.
• Load resistance = [ Voltage ] ÷ [ Current ]
• Disconnection ratio = [(Load resistance - Initial resistance) ÷ (Initial resistance)] ×100
(Note)
• A CT is needed for discerning heater disconnection. Connect a CT matching the rated current.
46
12.4.5 Thyristor element abnormality alarm
This alarm is turned ON when the feedback input value is 50% or more when the output of this instrument is 0%.
In other words, an abnormality is discerned when the actual load is subjected to high power while the power controller output is 0%. However, even when this alarm is ON, the thyristor element of this instrument may not always be abnormal as there may be an abnormality somewhere else in the system (including the load).
(Note)
• Identify if the thyristor element or the system side (including the load) is abnormal.
Particularly, check if the load is connected properly.
• If the thyristor element is abnormal, this instrument should be repaired.
• There is a dead band (delay time) when the alarm assessment is OFF.
12.4.6 Running the abnormality alarm
This alarm activates when the self-diagnostic function of this instrument identifies an abnormality.
This is for checking the internal memory of this instrument; this alarm informs users that the internal memory has been initialized by an unknown cause. The alarm is released about 1 minute after its activation or when this instrument is turned OFF then ON again. As the internal memory may reset at this time, check the parameter settings and perform a simulation run to confirm that the control is normal before restarting normal control operations.
(Note)
• If the settings are altered by this alarm, return them to the previous settings.
• The alarm is usually released by turning the power of this instrument OFF then ON again, but if it still doesn’t release, this instrument should be repaired.
12.4.7 Phase-sequence abnormality alarm
This alarm is turned ON if there are any incorrect connections of the 3-phase power supply (U, V and W).
To release this alarm, turn this instrument OFF, connect the wires properly, and turn it ON again.
12.4.8 Open-phase alarm
This alarm is turned ON when any of the 3-phase power supply connections (U, V or W) are disconnected.
To release this alarm, turn this instrument OFF, connect the wires properly, and turn it ON again.
(Note)
• In the case of standard types (The main circuit power supply and the control circuit power supply are common.), the determination of the W phase only is enabled. If the U-phase or V-phase opens, the operation of this instrument will stop. (The power is turned OFF.)
• In the case of a light-load/serious imbalance status,/ rated voltage not used or if a special type (where the main circuit power supply and the control circuit power supply are separate) ,the open-phase determination may not perform correctly.
• Use an abnormality alarm for a three-phase power supply together with a phase-sequence abnormality alarm. (Even when the phase-sequence abnormality alarm is ON, an open-phase status or a frequency abnormality may exist. It means a definite determination of status cannot be performed on these 3 kinds of alarms.
12.4.9 Imbalance alarm
This alarm is determined by the “imbalance rate” which is the alarm set point (judgment value) and by the load currents of the three phases with the following formula.
• Imbalance rate ={(Load current max value - Load current min value) ÷ (Load current max value)} × 100(%)
(Note)
• This alarm is not available for zero-cross control types.
• A CT is needed for discerning an imbalance. Connect a CT matching the rated current.
47
12.4.10 Frequency abnormality alarm
This instrument detects the power frequency automatically when it is turned ON. This alarm is turned ON when the power frequency is neither 50Hz 2Hz nor 60Hz 2Hz.
The alarm can be released by checking the power frequency and by supplying power with a normal waveform.
In addition, this alarm may be activated by noise in the power supply. Countermeasures against noise are required.
12.5 Load
12.5.1 Resistive load
The typical load of this kind is a heater. There are three kinds of heater according to their resistance-temperature characteristics.
(1) Nichrome heater
• This heater has a low resistant-temperature characteristic, and its current change is small. It is therefore not necessary to be controlled based on current.
In general, it can be controlled with voltage feedback or without feedback.
• In the case of feedback types, the rated current of the thyristor should have a buffer of 10% or more of the heater rating, considering the variance in the resistance value (about 10%).
In the case of no-feedback types, the rated current of the thyristor should have a buffer of 20% or more of the heater rating, considering the variance in the resistance value (about 10%) and the power voltage fluctuation (about 10%).
(2) SiC heater
• The resistance value of this heater varies greatly as time passes and increases in the course of use.
This means that the current flow gradually reduces and generated heat will eventually become insufficient.
Therefore, power feedback types, by which the control voltage increases to maintain a constant generated heat, are the most suitable.
• The service life of this heater should be regarded as expired when the resistance value becomes about 4 times the initial resistance value. At this time, the control voltage to the heater increases to double.
• The rated current of the thyristor should have a buffer of 20% or more of the heater rating.
(3) Molybdenum disilicide heaters, metallic heaters and indicators
• The resistance value for temperatures other than the normal temperature range varies from 10 – 19 times.
This heater should therefore be controlled with current feedback.
• The rated current of the thyristor should have a safe side of 20% or more of the heater rating.
12.5.2 Inductive load
The typical load of this kind is the transformer. Special care is required on the transformer’s flux density. If this is too high, the iron core of the transformer is easily saturated magnetically, causing problems such as the rapid-break fuse melting-down or transformer damage due to heat. Be sure that the flux density of the transformer is 1.2 (T) or less.
The feedback type can be determined according to the resistance-temperature characteristic of the heater connected to the secondary side of the transformer.
The rated current of the thyristor should have a buffer of 30% or more of the heater rating. Such primary side control of a transformer should be performed with the phase angle control.
12.6 Other
12.6.1 Leak current
By a surge-absorbing snubber (series connected resistors and capacitors) being connected inside the power controller, the power supply and the load become connected and a very small current will flow at the output side, even when the output level is 0%. Therefore, the voltage or current at the load side can be observed even when the output is 0%, and this is not a malfunction. Control a load with a load current being large enough compared to the leak current.
48
12.6.2 Output voltage measurement
The output waveform (phase angle control) of the power controller is not a sine wave and is distorted.
With a rectifying type measuring unit, a correct measurement value cannot be obtained as such units are for sine waves. Use an RMS type or armature type measuring unit for the measurement of the output of the power controller.
The following shows differences between the measurements of an RMS and armature type measuring unit.
Type Actual Voltage Measurement (V)
RMS type
Rectifying type
0
0
30
12
60
28
90
50
120
76
150
107
180
147
190
166
200
190
12.6.3 Surge countermeasure
The power controller may be affected by a strong surge noise that may be generated during the switching
(ON/OFF) of peripheral equipment such as a magnetic switch. It is recommended to attach a noise absorbing capacitor (oil capacitor or film capacitor) on the load side in order to absorb the surge noise.
49
13 GENERAL SPECIFICATIONS
Phases : 3 phases
Rated voltage : 200V AC (Selection with the 200V/220V/240V switch)
400V AC (Selection with the 380V/400V/440V switch), to be specified
• With the standard specifications, the power supply to the main circuit and control circuit is
Rated current
Rated frequency common. A special type using separate power supplies for the circuits can also be manufactured as an option.
: 30A, 50A, 75A, 100A, 150A, 200A, 250A, 300A, 400A, 500A To be specified
: 50/60 Hz (Automatic switching)
Allowable voltage fluctuation : 10% of the rated voltage
Allowable frequency fluctuation : Rated frequency 2Hz
Control system
Arms
: Phase angle control, zero-cross control
: 6-arm
Feedback type : Voltage, current, power
Control input signal : 4 to 20mA DC (input resistance approx. 100 , max. allowable current 25mA DC)
1 to 5V DC (input resistance approx. 50k , max. allowable voltage 10V DC)
Remote setting input : Trimmer signal (10k recommended, 2 to 20k allowable)
Remote contact input: Non-voltage contact signal or open-collector signal ( External contact capacity 1mA, 5V DC or more)
Remote CT input : 0 to 5A AC of the rated current
Slope
Elevation
Soft start time
Current limit
: 0 to 100% of the output range
: 0 to 100% of the output range
: Approx. 1 to 20sec.
: 0 to 100% of the output range
Imbalance rate adjustment: Output balance adjustment in the range of approx. 40% is enabled.
Output range : 0 to 98% of the supply voltage
Output accuracy : Without feedback: 10% of the rated voltage
With voltage feedback: 3% of the rated voltage
(when rated voltage fluctuation is within 10% and the load resistance fluctuation is within 1 to 10 times)
With current feedback: 3% of the rated current
(when rated voltage fluctuation is within 10% and the load resistance fluctuation is within 1 to 10 times)
With power feedback: 3% of the rated power
(when rated voltage fluctuation is within 10% and the load resistance fluctuation is within 1 to 3 times)
Applied load
The accuracy is based on the reference operating condition and in the range of 10% to
90% of the ratings and is not specified under other conditions. The error of the CT is not included.
: Resistive load, inductive load
Alarm types
The inductive load is applicable only in the control of the primary side of a transformer in the phase angle control method. The flux density recommended for the transformer is 1.2 T or less.
Minimum load current: 0.5A or more (at 98% output at the rated voltage)
: Over-current alarm
Rapid-break fuse meltdown alarm
(Alarm output: AL1)
(Alarm output: AL1)
Heat radiation fin over-heat alarm
Heater disconnection alarm
(Alarm output: AL1)
(Alarm output: AL2)
Thyristor element abnormality alarm (Alarm output: AL2)
Imbalance alarm (Alarm output: AL2)
Running abnormality alarm
Phase-sequence abnormality alarm (Alarm output: AL3)
Open-phase abnormality alarm
Frequency abnormality alarm
(Alarm output: AL3)
(Alarm output: AL3)
50
Alarm output points : 3 points (AL1, AL2, AL3)
Alarm output AL1, AL2 ---When the alarm is activated, the output is turned on.
Alarm output AL3 ----------When the alarm is activated, the output is turned off.
Alarm output
Electrical life
: Mechanical relay, Form A contact
Max. load 240V AC/1A, 30V DC/1A, Min. load 5V DC/10mA or more
: 100,000 cycles or more
Contact protection element : Not built in
Over-current protection device: The Rapid-break fuse melts down when the load is short-circuited.
Output 0% (gate OFF) at approx. 120% of the rated current
The upper current limit can be set by the current limit function.
However, connect a CT matching the rated current.
Remote setting types : Slope (AI1)
Elevation (AI2)
Current limit (AI3)
Remote contact types: Running status (DI1: Run/Stop)
Control system (DI2: Phase angle control/zero-cross control)
Setting method (DI3: Front panel/Remote setting)
Cooling system : Rated current 75A or less: Natural air cooling
Rated current 100A or more: Forced air cooling
Working temperature : -10 to 55
The following decreasing characteristic is applicable at 40 or more.
Ambient temperature (°C)
Working humidity : 30 to 90%RH, No condensation.
Insulation resistance : Between power supply terminal and protective conductor (GND) terminals:
500V DC/50M or more
Withstanding voltage : Between power supply terminal and protective conductor (GND) terminals:
2000V AC/1 min. (200V type)
Between power supply terminal and protective conductor (GND) terminals:
2500V AC/1 min. (400V type)
For instruments with the cooling fan(s) (i.e. rated current 100A or more), the fan power cord should be unplugged (the cooling fan has a withstanding voltage of 2000V AC and should be excluded from 2500V AC/1 min specification).
Power consumption:
Rated current 30A, 50A, 75A
Rated current 100A
Rated current 150A, 300A
Rated current 200A, 250A, 400A, 500A
Generated heat:
Rated current
30A
Max. heat generation
140W
50A
75A
100A
180W
260W
380W
200V supply type
15VA
40VA
65VA
90VA
Rated current
250A
300A
400A
500A
400V supply type
20VA
55VA
90VA
125VA
Max. heat generation
920W
1100W
1530W
1980W
51
External Dimensions : 325 (H) x 200 (W) x 200 (D) (Rated current 30A/50A types)
325 (H) x 288 (W) x 220 (D) (Rated current 75A/100A types)
325 (H) x 420 (W) x 240 (D) (Rated current 150A to 250A types
Weight
Case assembly material
Color
495 (H) x 420 (W) x 240 (D) (Rated current 300A to 500A types)
Excluding projections
: Approx. 8k g (Rated current 30A/50A types)
Approx. 13k g (Rated current 75A/100A types)
Approx. 22k g (Rated current 150A to 250A types)
Approx. 36k g (Rated current 300A to 500A types)
: Ordinary steel sheets
: Gray
Installation : Panel installation
Reference operation condition: Ambient temperature : 23 2
Ambient humidity
Power voltage
Power frequency
: 55 5%RH (No condensation)
: Rated voltage 1%
: Rated frequency
Installation posture : 0 Front, rear, left and right.
Normal operation condition : Ambient temperature : -10 to 55
Ambient humidity : 30 to 90%RH (No condensation)
Power voltage
Power frequency
: Rated voltage 10%
: Rated frequency 2Hz
Storage condition
Installation posture : 5 Front, rear, left and right
Vibration/impact : None.
Altitude : 2000m or less
: Ambient temperature : -20 to 60
Ambient humidity : 5 to 90%RH (No condensation)
SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION
Reg. Office : 2-5-1, Senbahigashi, Minoo, Osaka, Japan
URL
E-mail :
: http://www.shinko-technos.co.jp
[email protected]
Tel :
Fax:
81-72-727-6100
81-72-727-7006
No.PAH3E2 2009.06
52

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