Panasonic MGSD

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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-19

Speed controller Brake Unit Options Index

EX 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-18

Operation through contactless signal

• Small signal relays SW3, SW6 and SW7 can be replaced with transistor.

MAX

DC5V

GND

Pin No.

To TG To TG To TG

STOP

RUN

Pin No.

STOP

RUN

STOP

RUN

Pin No.

1 µF

1 kΩ

Internal equivalent circuit

22 kΩ

1 µF

1 kΩ

6.2 V

Parallel operation through external speed changer

1. The resistance Rs of the external speed changer

VR should be as follows:

Rs = 20/N (kΩ)

where, N is the number of motors.

2. For synchronous operation or ratio operation,

desired revolving speeds must be set from the

maximum speed control.

Soft-start and soft-down controls and operation

changeover switch must be set to the same

position.

3. Wirings from the external speed changer VR should

be connected to the same pins (No.5 and 6) on the

controller.

4. Malfunction may occur as the number of devices

operated in parallel increases.

To secure correct operation, connect a noise filter

to each unit.

5. For other electrical connections, refer to

corresponding circuit/wiring diagrams.

Pin No.

To TG

To TG To TG

Pin No.

Parallel operation through analog signal

The input impedance of the controller is approx. 100 kΩ.

The output impedance of the analog signal source

should be determined based on the total input

impedance of the speed controllers.

Soft-operation

• Soft-start, soft-down

1. Power switch SW1 should be turned on approx. 0.5

sec before the operation start signal from SW6.

2. When repeating run/stop cycles, turn on/off only SW6

while keeping SW1 turned ON. In this way, the motor

can be controlled by using a small signal. To stop

operation for a long time, also turn off SW1.

3. Soft-start/soft-down period is the time required for the

equipment to start up from stop state to full speed

when the external speed changer is set at maximum

value.

4. Soft-start/soft-down control, when at the full

clockwise position, disables the soft-down function.

As the stop signal is input, power supply to the motor

is turned off immediately. However, the revolving

speed gradually decreases in proportion to the inertia

of the load and motor starts free-running stop

sequence.

5. Soft-start/soft-down control can set maximum time

length of approx. 5 seconds (Typ. at FCCW). The

setting may be exceeded if the inertia of the load is

too large.

6. For other electrical connections, refer to

corresponding circuit/wiring diagrams.

• Soft-start and electric brake

Electrical wirings are the same as for “Unidirectional

rotation and electric brake” and “Normal/reverse

rotation and electric brake”.

Adjust the soft-start time from the soft-start/down

control.

Pin No.

0 to +3 V

GND

Pin No.

Rated voltage

input

SW6

RUN

DOWN

To motor

RUN

Soft-start Soft-down

Speed

SW1

SW6

0.5 sec or more

Speed controller

To TG

No braking applied Braking applied Analog signal and brake

SW1

SW6 DC10 V 10 mA

100 V supply system 5 A or more at 125 VAC

200 V supply system 5 A or more at 250 VAC

SW1

NFB

Panasonic MGSD - Page 9

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