Chapter 2: Handling Precautions

Make sure to follow the precautions bellow who using the JW-20FL5/20FLT, JW-50FL (hereafter referred to

 

as this module) and Z-336J (hereafter referred to as this board).

 

(1) Installation

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- Do not install or store this unit in the following conditions.

 

1 Locations close to a heating element

 

2 Sudden temperature changes which may cause condensation

 

3 Corrosive or inflammable gas

 

4 Vibration or hard jolts

 

- The minimum distance between nodes is specified in the regulations. (2.5 m when the 10BASE5

 

is used.) When connecting devices, be sure to maintain these minimum distances.

 

Cables used for 10BASE5 systems have marks every 2.5 m. Position each transceiver directly

 

on one of these marks.

 

- Mount the transceivers on electrically insulated objects, such as a wooden mounting block.

 

- Prior to installing or detaching the JW20H/30H or JW50H/70H/100H, make sure to turn OFF the

 

power supply to the PCs.

 

- Prior to connect the board, make sure to turn OFF the power to the J-board.

 

- Isolate the hub case electrically from the control panel chassis.

 

(2) Treatment

JW-20FL5/20FLT and JW-50FL

-For ventilation, holes are provided in the cabinet to prevent a temperature rise. Do not block the ventilation holes. Good ventilation is necessary.

-Never allow a liquid such as water and chemical solution and a metallic object like a copper wire inside this module to avoid a possible hazard. Otherwise, it may be a cause of machine trouble.

-When a trouble or abnormal condition such as overheat, fume, or smoke is met, stop the operation immediately, and call your dealer or our service department.

Z-336J

A J-board is a PC board which contains sensitive electronic parts. Therefore, be careful when handling it.

1Before touching the board with your hand, make sure to discharge all static electricity from your body.

2Do not touch the board if your hands are dirty or wet.

3Do not put the board down on a conductive object (such as a metal plate).

(If a J-board with a CPU is placed on a conductive object, the battery terminals may be short circuited and the back up memory will be lost.)

4Do not handle any switches, connectors, or terminal blocks on the J-board using excessive force.

(3)Grounding

-Connect the J-board FG terminal (on the terminal block on the CPU board) to an independent class 3 ground. Do not share the ground with high voltage equipment.

-The hexagonal standoffs (supplied with each board) for assembling the J-board are used for connecting the ground (FG). Make sure to tighten them securely.

(4)Wiring precautions

-Install the communication lines at a distance of 60 cm or more away from motor power lines or high voltage lines.

-Do not route wires near equipment that generates electrical noise.

-Use category 5 10BASE-T shielded twisted pair cable.

-Use an isolated shield transformer to provide power to the hubs.

-We recommend using a transceiver cable that is 2 m or shorter.

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