Cable Specifications; Table 3-2 Recommended Cable Specifications - Hitachi IR.LINK User Manual

3.4.2 Cable specifications

The IR.LINK module requires two pairs of shielded twisted-pair cables.
A polyethylene-insulated vinyl sheath cable for instrumentation should be used as the cable for
IR.LINK and IR.Station.
Recommended cable model: KPEV-SB 2P × 0.5 mm
Maximum conductor resistance (20°C)
Withstand voltage
Minimum insulation resistance (20°C)
Electrostatic capacity (1 kHz)
Characteristics impedance (1 MHz)
Note: The 1-MHz characteristics impedance of the above cable is 110 ohms but IR.LINK and
IR.Station have 120-ohm internal terminating resistors in consideration of other
transmission rates. Short TERM terminals with a jumper when the IR.LINK module is
used at an end of the network. 120-ohm terminating resistors are connected in IR.LINK
and IR.Station.

Table 3-2 Recommended Cable Specifications

Item
3 MOUNTING AND WIRING
2
(Hitachi Cable, Ltd.)
Specifications
34.0 Ω/km
1000 VAC/minute
2500 MΩ•km
60 PF/m
110 Ω
3-7