Yaskawa VS-616G5 Profibus-DP Control Card SI-P - Manual (Page 5)

VS-616G5 Option Instruction Manual: Profibus-DP Control Card SI-P Page 5
WIRING NOTES
1. Separate the control signal wires (from terminal block TC1 on the option card) from the main circuit
wires and other power cables.
2. Use twisted shielded wire to connect the communication signals. Prepare the wire as shown in Fig. 3
to prevent noise interference.
3. Care must be taken in the selection of the twisted shielded wire in lengths over 50 ft. The impedance
of the wire should be low enough to insure sufficient signal amplitude for proper operation of all com-
munication equipment connected to the SI-P card. 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 code 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 terminal block TC1 is listed in Table 1.
!
CAUTION
Fig. 3 Shielded Wire
.
A. NEVER connect the wire’s 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 (E) on the inverter’s Terminal E (G).
B
C
A
Shield Sheath Armor