Appendix 4 Using NS-AL002 RS-232C/RS-422A Converters
A-14
A-4-2 Mounting and Removing
Connect the NS-AL002 directly to port A or port B of the PT. Two NS-AL002 Adapters
cannot be connected to ports A and B simultaneously.
Mount the Adapter by tightening and securing the mounting screws on both of the D-Sub
connectors. The correct tightening torque is 0.3 N
· m. The correct tightening torque for
the terminal block is 0.5 N
· m.
To remove the Adapter, loosen the screws and pull out the Adapter.
Note
· Always turn OFF the power to the PT before removing the Adapter.
· Do not touch the surface or the mounted parts of the Board with bare hands.
Always discharge any static electricity from your body before handling the Board.
A-4-3 Specifications
The following table shows the general specifications and communications specifications of
the Adapter.
@ General Specifications
Item Specifications
Dimensions 45 ´ 49 ´ 28.5 mm (W ´ H ´ D)
Weight 50 g max.
Ambient operating temperature 0 to 50°C
Storage temperature -20 to 60°C
Ambient operating humidity 35% to 85% (without condensation)
Rated power supply 5 V ±10% (through pin 6 of the RS-232C connector)
Power consumption 150 mW max.
Operating environment No corrosive gases.
Vibration resistance Conforms to PT specifications.
Shock resistance Conforms to PT specifications.
Reference RS-485 (two-wire) communications are not supported by the NS Series. Always use
RS-422A (four-wire)
The NS-AL002 cannot be used with NT-series PTs or PLCs.
@ Communications Specifications
· RS-422A Interface
Item Specifications
Baud rate 115.2 kbps max.
Transmission distance 500 m total length
Terminal block format 8-terminal terminal block, M3.0
Insulation No insulation (See note.)
Note: The RS-422A and RS-232C are not insulated.
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