Installation And Wiring; Installing The Si-T/V7 Unit - YASKAWA SI-T/ V7 Instructions Manual

4

Installation and Wiring

• Before installing or removing the Option Unit, or performing wiring operations, always turn OFF the
power to the Inverter and wait until the specified period of time has elapsed after all the Inverter
indicators have turned OFF. (The time is shown on the Inverter's front cover.)
Failure to do so can result in electric shock.
Route the MECHATROLINK communications cables separately from the main circuit wiring and
IMPORTANT
other power lines.
4.1

Installing the SI-T/V7 Unit

Use the following procedure to mount the SI-T/V7 Unit after removing the Inverter's Digital
Operator and front cover.
Be sure to complete the wiring to the Inverter before installing the SI-T/V7 Unit, because the
terminals of the Inverter are hidden from view after the Unit is installed.
1. Turn OFF the Inverter's main-circuit power supply and wait one minute.
2. Confirm that all the indicators on the Inverter have turned OFF, wait until the specified
period of time has elapsed (the time is shown on the Inverter's front cover), and then
remove the Digital Operator and the front cover.
3. Use nippers to cut off the cover of the Inverter's CN2 connector in the three places-
marked as A in Fig. 1. Be careful that the covers do not fall into the Inverter Unit. If
pieces do fall in, be sure to remove them.
4. Align the mounting fixture with the C tab, and use M3 × 8 SW screws to secure the fix-
ture B.
5. Before installing the SI-T/V7 Unit on the Inverter, connect the grounding cable to the
grounding terminal as shown in Fig. 2 . Three types of grounding cables for various
Inverter capacities are provided. Connect the appropriate cable with a crimp terminal.
6. When installing the SI-T/V7 Unit onto the Inverter Unit, make sure that it is straight.
Align the modular plug (CN10) of the SI-T/V7 Unit with the modular plug (CN1) of the
Inverter, and connector (CN2) with the connector for the SI-T/V7 Unit (CN2).
7. Tighten the screw at position D to affix the SI-T/V7 Unit to the Inverter Unit. The screw
is already screwed in on the Inverter Unit.
8. Return the Digital Operator and the front cover to their original positions.
WARNING
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