Yaskawa VS-616G5 InterBus-S Control Card SI-R - Manual (Page 5)

VS-616G5 Option Instruction Manual: InterBus-S Control Card SI-R Page 5
WIRING NOTES
1. Separate the control signal wires (on the option card terminal block) from the main circuit wires and
other power cables.
2. Use twisted shielded wire. Prepare the wire as shown in Fig. 3 to prevent noise interference.
3. Care must be taken when selecting twisted shielded wire in lengths exceeding 50 feet. The impedance
of the wire should be low enough to ensure sufficient signal amplitude for proper operation of all
communication equipment connected to the InterBus-S Control Card SI-R. In general, as the length of
wire is increased, the cross section or gauge must also increase.
4. Please observe National Electrical Code (NEC) and any other governing regional or local codes when
wiring electrical devices.
Wiring Connection Notes:
1. To prevent noise, use shielded wire as specified in Fig. 3. Separate from the power circuits
(100VAC or greater).
2. Terminate shielded wire correctly. (Refer to Fig. 3.)
3. Applicable wire sizes for the terminal block are listed in Table 2 below.
Table 2: Applicable Wire Sizes for Terminal Blocks JP1 and JP2
Wire / Installation Type Cross-sectional Area [mm
2
] AWG I [A] VAC [V]
Thin twisted wire 1 16 12 125
Solid wire 1.5 16 12 125
UL — 22-16 10 300
CSA — 26-16 10 300
CSA — 26-16 10 150
!
CAUTION
Shield Sheath
Armor
Fig. 3 Shielded Wire
A. NEVER connect the shield to ground.
B. WRAP insulating tape around shielded areas and wires where termination occurs.
C. CONNECT the shielded wire end to the Grounding Terminal on the inverter control board.
B
C
A