Yaskawa AO-12B2 - Manual (Page 7)

VS-616/676 Series Option Instruction Manual: Isolated Analog Monitor Card AO-12B2 Page 7
WIRING NOTES
1. Separate the output signal wires that are connected to the Isolated Analog Monitor Card’s terminal
block (TB1) from the main circuit wires and other power cables.
2. Use a twisted pair-shielded wire to connect output signals. Connect the shield as shown in Fig. 3 to
prevent noise interference.
A. NEVER connect the wire’s shield to signal wires.
B. CONNECT the wire’s shield (at the inverter side only) to terminal TB1-3.
C. WRAP insulating tape around exposed shielded, sheathed areas and wires where termination occurs.
3. Care must be taken in the selection of the twisted shielded wire over 50 feet long. The impedance of
the wire should be sufficiently low to insure signal amplitude for proper operation of all equipment
connected to the Isolated Analog Monitor Card AO-12B. In general, as the wire’s length is increased,
it’s cross section or gauge must also increase.
4. The National Electrical Code (NEC) and any applicable regional or local codes should be observed
when wiring electrical devices.
!
CAUTION
Shield
Protective Cover
Fig.4 Shielded Wire