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4 SETTINGS AND PROCEDURES FOR OPERATION
4.4 Connection to AS-i System
4.4.1 Precautions for wiring
• Switch off all phases of the programmable controller power supply and AS-i power supply outside the
programmable controller before starting installing or wiring work.
If all phases are not switched off, electric shock will occur or the product will be damaged.
• Be sure to install the terminal covers included with the product, when turning on the power or operating
the product after installation and wiring is completed.
Failure to install the terminal cover could lead to electric shocks.
• Always confirm the products terminal layout before wiring to the module.
Miswiring could lead to fires or faults.
• Tighten terminal screws within the specified torque.
Failure to observe this could result in damage to the screws or module, short or misoperation.
• Make sure that no foreign matter such as chips or wire offcuts gets inside the module.
It will cause fire, failure, or misoperation.
• A label is installed at the upper part of a module to prevent the entry of foreign matters. Do not remove
the label during wiring. However, be sure to remove it for heat dissipation during system operation.
• To connect the AS-i cable to the module, the cable must be securely fixed. Please be sure to run it in a
duct, or clamp it.
Failure to observe this could cause the unstable cable connection, resulting in damage to the cable or
module by carelessly pulling the cable, or the system malfunction due to poor cable connection.
• Do not bundle AS-i cable together with main circuit or power lines, or lay them close to these lines.
As a guide, separate these lines by a distance of at least 100 mm, otherwise misoperations may occur
due to noise.
• When removing the AS-i cable from a module, do not pull it out by hand. Always be sure to unscrew the
module mounting screws in advance.
If the cable is pulled while being connected to the module, it could cause damage to the cable or
module, or the system malfunction due to poor cable connection.
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This section describes the precautions to observe when connecting the QJ71AS92 to
the AS-i system, and the wiring methods.
(1) The overall distance is up to 100m.
The distance can be increased 100m by use of one repeater.
Since up to two repeaters can be used in series, the overall distance can be
increased up to 300m.
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