ABB PFTL201C  Horizontal measuring sensor

Connection not normally needed. Connect an external regen resistor (provided by customer) between B1-B2 if regen capability is insufficient.B2-B3 is normally shorted (using the integrated regen resistor) If the capacity of the internal regen resistor is insufficient, connect an external regen resistor (provided by customer) between B1-B2 with B2- B3 open (wiring removed).This is normally shorted between ⊕1-⊕2. If harmonic frequency suppression is needed, connect a DC reactor between ⊕1-⊕2.High-Frequency Harmonic Suppressing DC Reactor Connection Terminal

Power ON Sequence Design 

Keep the following in mind when designing a Power ON Sequence. • Design the power feed sequence so that the power goes OFF if a “Servo Alarm” is output. See “Figure A Main Circuit Wiring Example” on page 12. • Hold down the power ON button for at least two seconds. The digital torque amplifier will output a “Servo Alarm” signal for at most two seconds at power ON. This is necessary for digital torque amplifier initial setting.Power Line Size and Peripheral Devices See the Sigma II Series Servo System User's Manual: Servo Selection and Data Sheet edition. (Document Number: YEA-SIA-S800-32.2x)

Main Circuit Terminal Block Wiring Method 

Observe the following cautionary items when wiring. Servo amplifiers with capacities of 1.5kW or less consist of a connector-type terminal block for the main circuit. Wire the terminal block by the following procedure 

• Perform wiring after removing the terminal block from the digital torque amplifier unit.

 • Insert one wire into each power line insertion aperture in the terminal block. 

• When inserting the power lines, be sure that they do not short against the surrounding material due to exposed wire cores.

 • Power lines that have been mistakenly pulled out by excessive force should be re-stripped then connected.

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