3.8 Control Circuit Wiring
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 83
When connecting control wires to the terminals, use shielded twisted-pair wires (treating wire ends as shown in
Figure 3.23 and connect the shield to the ground terminal (E [G]) of the drive.
Figure 3.22
Figure 3.23 Preparing the Ends of Shielded Cables
NOTICE: Do not exceed 50 meters (164 ft.) for the control line between the drive and the operator when using an analog signal from a
remote source to supply the frequency reference. Failure to comply could result in poor system performance.
◆ Switches and Jumpers on the Terminal Board
The terminal board is equipped with several switches used to adapt the drive I/Os to the external control signals.
Figure 3.24 shows the location of these switches. Refer to Control I/O Configuration on page 84 for setting instructions.
Figure 3.23
Figure 3.24 Locations of Jumpers and Switches on the Terminal Board
A – Drive side D – Shield sheath (insulate with tape or heat-shrink tubing)
B – Insulation E – Shield
C – Control device side
Off On
Jumper S3
Terminal H1/H2
Sink/Source Sel.
DIP Switch S2
RS-422/485 Termination
Resistor
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