Panasonic UJ20 Series Operating instructions

Matsushita Electric Works, Ltd.

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Division

How to use the UJ20 external inputs/outputs and

modes / Troubleshooting

Page Title

1How to use the UJ20 external inputs/outputs and modes /

Troubleshooting

2 Emergency stop of UV irradiation – 1: EMERGENCYsignal

3 Emergency stop of UV irradiation -2: STOP signal

4 Emergency stop of UVirradiation -3: [EMISSION] SW

5 UVirradiation by an external signal (foot SW) (when using one head)

6 UVirradiation by an external signal (foot SW) (when using one head)

7 How to use BUSY signals

8 How to use BUSY signals (Connection of UVirradiation indicators)

9 START signal modes: PULSE/STATUS

10 UVirradiation starting by SW-on and stopping at a preset time

11 UVirradiation while holding SW on and stopping at the preset time

12 Collective/individual lighting control of multiple heads (ALL/MULTI)

13 Collective lighting control of multiple heads [ALL]-[PULSE]

14 Collective lighting control of multiple heads [ALL]-[STATUS]

15 Individual lighting control of multiple heads [MULTI]-[PULSE]

16 Individual lighting control of multiple heads [MULTI]-[STATUS]

17 Lighting control of the heads in pairs using two foot SWs

18 UVirradiation only by signal inputs regardless of time setting

19 UVirradiation only by signal inputs regardless of time setting: [MNL]

irradiation

20 UV irradiation pattern switching

21 UV irradiation pattern switching

22 Remedies for outputs of [ALARM] and [ERROR] warning signals

23 UVirradiation is impossible although [ERROR] is not displayed

Precautions for simultaneous input of the START signal to multiple UJ20

controllers

25 UJ20 inputs/outputs (I/O terminal arrangement)

26 UJ20 inputs/outputs (I/O specifications)

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Emergency stop of UV irradiation - 1:

EMERGENCY signal

Equipment

design

Use the [EMER] signal to stop the UV irradiation of UJ20.

Terminals [11] and [12] are shorted by a shorting bar as a factory default.

Connect an emergency stop SW between these terminals so that the signal input can be

turned off when the SW is pressed, and a forced stop of UV irradiation will be possible even

in the middle of the process.

1: While the [EMER] signal input is off, the [READY] signal is off,

and UV irradiation is not possible.

2: If the [EMER] input is turned off during UV irradiation,

it will stop, and the [ERROR] signal will be output.

Connect an emergency

stop SW between

[EMER]=[11] and

[COM]=[12] by B-contact.

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Emergency stop of UV irradiation -2: STOP signal

Use the [STOP] signal terminal [9] to stop the UV irradiation of UJ20.

When the signal is input between terminals [9] and [12], the UV

irradiation will stop, and the [ERROR] signal will be turned on.

[ERROR] is output because the UV irradiation has not completed.

Input [STOP] again or hold down the [SET] key to release

the [ERROR] signal.

COM

ERROR

START

STOP

START

STOP

ERROR

Equipment

design

Matsushita Electric Works, Ltd.

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Emergency stop of UV irradiation -3:

[EMISSION] SW

Operation

Press the [EMISSION] SW on the panel to stop the UV

irradiation.

When the UV irradiation is stopped by the [EMISSION] SW,

[ERROR] is output because the UV irradiation has not

completed.

Hold down the [SET] key to release the [ERROR] signal.

[EMISSION]

READY

START

EMISSION

ERROR

START

COM

READY

EMER.

ERROR

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UV irradiation by an external signal (foot SW)

(when using one head)

When using a foot SW or other external signal to start the UV irradiation, use the [START]

input terminal for easier connection.

When using only one LED head, connect the head to [CH1], and connect the foot SW

between terminals [1] and [12].

Don’t remove the shorting bar between terminals [11] and [12].

(Since the bar is used for an emergency stop signal, the UV irradiation is disabled if the

connection is off.)

Connect the SW

between [START1]=[1]

and [COM]=[12]

by A-contact.

Foot SW

UV irradiation

Preset UV

irradiation time

Equipment

design

Matsushita Electric Works, Ltd.

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Division

UV irradiation by an external signal (foot SW)

(when using one head)

When using a foot SW or other external signal to start UV irradiation,

use the [START] input terminal for easier connection.

UV irradiation starts when the [START] signal is received

while the [READY] signal is on.

During UV irradiation, the [READY] signal is off,

and the [START] signal input is ignored.

START

COM

READY

EMER.

READY

START

Equipment

design

Matsushita Electric Works, Ltd.

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How to use BUSY signals

The [BUSY] output signals stay on during UV irradiation by the corresponding heads from

CH1 to CH4.

The BUSY1 to BUSY4 signals are output for heads CH1 to CH4 independently.

Even if the output is set to 0% by the irradiation pattern setting, these signals are output.

These signals can be used for controlling the indicator that is lit during UV irradiation by

each head.

STOP

UV-1

BUSY-1

START

T2UV-2

BUSY-2

READY

ERROR

START

COM

READY

BUSY-1

BUSY-2

BUSY-3

BUSY-4

Equipment

design

Matsushita Electric Works, Ltd.

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Division

How to use BUSY signals

(Connection of UV irradiation indicators)

UJ20 has a 5 V DC (250 mA) external power supply.

Use this power supply and BUSY1 to BUSY4 in combination, and UV

irradiation indicators can be directly connected without any external

devices.

If the head cable length exceeds 2 m, use the BUSY signals to install

UV irradiation indicators in an easily viewable location for safety

purposes.

The external power supply is 5 V DC, and the maximum allowable load

current is 250 mA in total. The maximum allowable load current for

each BUSY signal is 100 mA.

+5 V DC

BUSY-1

BUSY-2

BUSY-3

BUSY-4

COM

BUSY-1

BUSY-2

BUSY-3

BUSY-4

5-24 V DC

Equipment

design

Matsushita Electric Works, Ltd.

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START signal modes: PULSE/STATUS

There are two START signal modes: [PULSE] and [STATUS].

[PULSE]: UV irradiation starts when an external START pulse signal is input.

When the preset time has elapsed, UV irradiation stops.

[STATUS]: While an external START signal is input, UV irradiation continues.

When the START signal is turned off within the preset time, the irradiation stops.

When the preset time has elapsed, irradiation stops even if the START signal is still on.

START

[PULSE]

[STATUS]

PULSE

STATUS

Equipment

design

Matsushita Electric Works, Ltd.

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UV irradiation starting by SW-on and stopping at

a preset time

UV irradiation starts when the foot SW is stepped on (momentary input = no

need for keeping the SW stepped on), and stops when the preset time has

elapsed.

[PULSE]: UV irradiation starts when an external START pulse signal is

input.

When the preset time has elapsed, UV irradiation stops.

(1) The UV irradiation starts when the [START] signal is received while the [READY] signal is on.

The UV irradiation starts when the [START] signal is input, and stops when the preset time has

elapsed.

(2) When the UV irradiation stops, the [READY] signal is turned on.

* During UV irradiation, the [READY] signal is off, and the [START] signal input is ignored.

* When the [STOP] signal is input, the UV irradiation stops, and the [ERROR] signal is turned on.

PULSE

STOP

UV-1

BUSY-1

START

READY

ERROR

START

COM

READY

BUSY-1

STOP

ERROR

Equipment

design

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