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*
Please read your User's manual carefully so that you will understand the operation and safety precautions before attempting to operate the system.
C-29
Speed
controller
Brake
U
nit
O
ptions
Index
EX48 type
Speed controller
*
Please read your User's manual carefully so that you will understand the operation and safety precautions before attempting to operate the system.
C-28
Speed change only
8
<Precautions>
1. To change rotating direction of induction motor:
Provide a motor halt period. Switch over SW2
after complete stop of the motor.
2. To change rotating direction of reversible motor:
A motor halt period is not necessary. Switch
over SW2 while keeping SW1 turned ON. When
configuring SW2 with relay contacts, use a relay
having large gap between contacts (e.g. HG/HP
relay from Matsushita Electric Works, Ltd.) to
prevent malfunction due to short-circuited
capacitor.
3. For motors for cooling fan and motors with
thermal protector, also refer to page C-35.
4. When using independent relay contacts for
SW2 to change over normal/reverse, interlock
both contacts so that they will not close
simultaneously.
5. The spark killer consisting of R1 and C1 must
be used to protect the relay contacts.
<Precautions>
Connect a fixed resistor (R3) in place of external
speed changer (VR).
Even if the R3 is not used (connection across pins
3 and 6 are open), the speed can be adjusted from
the maximum speed control within its adjustable
range (not full range but almost by half).
Operation from maximum speed control
SW1 : Power switch
SW2 : RUN/STOP switch
SW4 : Normal/reverse selector switch
Wiring diagram (for unidirectional rotation)
7
• The thick continuous lines represent main circuit. Use conductor of size approx. 0.75 mm
2
.
• The thin continuous lines represent signal circuit. Use conductor of size approx. 0.3 mm
2
.
When the distance from the tachometer generator (TG) is long, use shielded twisted pair cable.
Power
supply
Power switch
(extra-cost option)
Signal switch
(extra-cost option)
External speed changer
Option
DVOP002
2
Capacitor
(supplied with motor)
Motor
CW
White
Gray
Black
Pink
Pink
1
8
7
6
4
3
DIN terminal block
ATC180031
Matsushita Electric Works, Ltd.
(extra-cost option)
• Soft-start/down control
• Maximum speed control
• Response changeover switch
2
1
8
3
4
6
7
Pin No.
Capacitor
Pink
Pink
TG
Black
Motor
Rated voltage
input
Rated voltage
input
VR
STOP
SW2
RUN
2
1
3
Gray
White
SW4
C1
CCW
CW
R1
C1
R1
2
1
8
3
4
6
7
Pin No.
Capacitor
Pink
Pink
TG
CW
Black
Motor
VR
STOP
SW2
RUN
2
1
1
3
Gray
White
Run
Run
RUN
RUN
SW2
SW1
Stop
ON
STOP
STOP
Normal
Reverse
Stop
RUN
RUN
SW1
SW2
SW4
CW
CCW
ON
STOP
STOP
3
4
6
7
Pin No.
R3
RUN
SW2
STOP
To TG
20 k
Ω
1/4 W
• This wiring diagram causes the motor to rotate
clockwise when viewed from the motor shaft end.
To run the motor counterclockwise, interchange
the connecting point of black and gray leads.
interchange the connecting point of black and
gray leads.
• When no external speed changer is required,
the speed can be adjusted from the maximum
speed control.
Speed controller
Speed controller
Speed controller
Soft-start and soft-down times can
be adjusted by a single setting.
Use this feature to protect the load
from shock caused by sharp speed
change at startup and shutdown of
the motor.
To disable the soft operation, turn
the control fully clockwise.
Use this control to adjust the
revolving speed when the external
speed changer is set at the top
speed.
Adjust the speed to 1400 (min-1) or
below at 50 Hz; or 1700 (min-1) or
below at 60 Hz.
If the external speed setting is not
required, the maximum speed
control can also be used for setting
the speed.
A: High-stable mode
• Keeps the rotation speed
variation low against variation in
load.
• Enables a wide range of speed
control.
• Suitable for capability control.
• May fail to maintain constant
rotation speed upon sharp load
change.
B: High-response mode
• Enables quick response with low
hunting.
• Suitable for positioning
application.
• May fail to keep rotation speed
variation low against variation in
load.
• Not suitable for controlling wide
range of speed change.
Unidirectional rotation
Normal/reverse rotation
Rotating direction viewed
from shaft end
CW
CCW
Clockwise
Counterclockwise
SW1
SW4
SW2
DC10 V 10 mA
R1, C1
DV0P008 (option)
VR
DV0P003 (option)
100 to 120 V supply system 5 A or more at 125 VAC
200 to 240 V supply system 5 A or more at 250 VAC
SW1
NFB
SW1
NFB
Ground the return circuit to the earth terminal.
(100
Ω
or less, ø1.6 mm or more).
Tightening torque: 1.0 to 1.5 N·m
Circuit breaker (NFB)
: 5A
<Caution>
Install a ground-fault
circuit interrupter in
the power supply.
