Laminar flow assisting part, Abnormal discharge detection function, L.p.c. function – KEYENCE SJ-H Series User Manual

Page 6: Settings for sj-h* units in coupled operation, Frequency setting, Id number setting, Connecting sj-h* series units in coupled operation, Op-84296 relay box, Caution, Sj-h

The optional laminar flow assisting part can be installed to the SJ-HV Series.
The laminar flow assisting part shows its maximum power when eliminating static electricity under the
downflow in a clean room without disturbing the laminar flow.
For details, see the Instruction Manual of the laminar flow assisting part.
* The SJ-H/HA/HC Series cannot use the laminar flow assisting part.

The SJ-H* Series detects abnormal electric discharge caused by the condensation on the tips of
the electrode probes or conductive objects that may come close to the electrode probes, thus
interrupting the generation of ions and prevent the occurrence of trouble.

This function is used to reduce the amount of foreign matter adhering to the electrode probes when
the air purge function is not used. It controls the supply of high voltage so that application of high
voltage to the electrode probes is interrupted for a fixed cycle. In this way, the adhesion of foreign
matter to the electrode probes is prevented.

Settings for SJ-H* Units in Coupled Operation

This section explains how to make settings for SJ-H* units used in coupled operation.
* The SJ-HA Series can be coupled in parallel by using the relay box.

When using SJ-H* units in coupled operation, set a unique frequency for each SJ-H* unit individually.

When using SJ-H/SJ-HV/SJ-HC units in coupled operation, it is con-
venient to set a unique ID number for each unit individually. The ID
number of the SJ-H/SJ-HV/SJ-HC Series is set to 0 before shipping.
The ID number can be set in hexadecimal between 0 and F (i.e., 16
in total). Turn the ID Switch with the provided flat-blade screwdriver
to set the ID number.

By setting the ID number for each SJ-H* unit, it will be easy to control
each static elimination bar through the SJ-H01 Remote Control Con-
sole.

See "Settings for SJ-H* Series Used with Remote Control Console" (page 7).

It is possible to connect seven SJ-H* units in coupled operation, provided that the total length
between the power supply and the farthest static elimination bar is within 30 m.
* Seven units can be connected only when a 36 V power supply is used. Contact KEYENCE when a

24 V power supply is used.

Do not connect a number of power supplies to a single SJ-H* unit or more than one SJ-H*
unit connected together, otherwise the power supplies will be short-circuited an accident or
malfunction may result.

• A coupled installation of the SJ-H* units is possible under the following restrictive conditions.

• Up to seven SJ-H* units can be connected.

(Seven units can be connected only when a 36 V power supply is used. Contact KEYENCE when a
24 V power supply is used.)

• The total extension length between the power supply and the farthest static elimination bar is within

30 m.

• When providing air to more than one SJ-H* unit, check that each static elimination bar is provided with

air. If the air supply source is one, each static elimination bar may not be provided with enough air.

Connecting in series

Up to seven SJ-H/SJ-HV/SJ-HC units can be connected in series over the optional 10-to-10-pin serial
cable.

* The SJ-HA Series cannot be connected in series.

Connecting in parallel

Up to seven SJ-H* units can be connected in parallel over the optional 10-to-10-pin serial cable
through the optional OP-84296 relay box.

Terminator switch setting

If the SJ-H/SJ-HV/SJ-HC Series is installed in serial, set the terminator switch to meet the connection
state.
* The SJ-HA Series does not have the terminator switch.

• If the modular plug is connected to port A:

Set the terminator switch to "A."

• If the modular plug is connected to port B:

Set the terminator switch to "B."

• If the modular plug is connected to both ports A and B:

Set the terminator switch to the center.

• Only move the terminator switch when the power to the SJ-H/SJ-HV/SJ-HC is OFF.
• If the terminal switch is not set correctly, alarm outputs on the SJ-H/SJ-HV/SJ-HC Series will not be

output correctly.

Using the OP-84296 relay box allows the SJ-H* Series to be con-
nected in parallel.

Use the relay box when the connection between SJ-H* Series is
greater than 10 m.
* If no relay box is used, the SJ-H* Series can only be connected

in serial.

• Set the terminator switch to "2" if the SJ-H* Series is connected to

the OUT port of the relay box.

• Set the terminator switch of the OUT port that is not connected to the SJ-H* Series to "1".

• A coupled installation of the SJ-H* units is possible under the following restrictive conditions.

• Up to seven SJ-H* units can be connected.

(Seven units can be connected only when a 36 V power supply is used. Contact KEYENCE when a
24 V power supply is used.)

• The total extension length between the power supply and the farthest static elimination bar is within

30 m.

• When providing air to more than one SJ-H* unit, check that each static elimination bar is provided with

air. If the air supply source is one, each static elimination bar may not be provided with enough air.

• If the terminal switch is not set correctly when using a relay box, alarm outputs on SJ-H* units in the

series will not be output correctly.

Laminar flow assisting part

Abnormal discharge detection function

L.P.C. function

Frequency setting

ID number setting

SJ-H* Series ID number switch

0-9

Remote control ID number key
and ID number seal

0-9

Connecting SJ-H* Series units in coupled operation

SJ-H

Series

SJ-HA

Series

SJ-HV

Series

SJ-HC

Series

SJ-H

Series

SJ-HA

Series

SJ-HV

Series

SJ-HC

Series

SJ-H

Series

SJ-HA

Series

SJ-HV

Series

SJ-HC

Series

SJ-H

Series

SJ-HA

Series

SJ-HV

Series

SJ-HC

Series

SJ-H

Series

SJ-HA

Series

SJ-HV

Series

SJ-HC

Series

SJ-H

Series

SJ-HA

Series

SJ-HV

Series

SJ-HC

Series

Caution

NOTE

DC power supply at a rated
voltage of 24 to 36 V.

10-to-10 pin
cable

10-pin I/O cable

OP-84296 relay box

DC power supply at a rated
voltage of 24 to 36 V.

Relay box

10-to-10-pin cable

10-to-10-pin cable for
SJ-H036*

10-pin I/O cable

Terminator switch

NOTE

SJ-H

Series

SJ-HA

Series

SJ-HV

Series

SJ-HC

Series

Caution

NOTE