Shihlin Inverter Introduction
Inverter Introduction
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3.5.8 Main-circuit Terminals and Control Terminals Introduction
Main-circuit terminals
R/L1-S/L2-T/L3
Connect to the commercial power supply
U/T1-V/T2-W/T3
Connect to the three-phase squirrel-cage motor.
+/P-P1
Add to the DC reactor.
+/P-PR
Connect to the brake resistor. (Note 1, 2)
(+/P)-(-/N)
Connect to the brake unit. (Note 3)
Connect the enclosure of the inverter to ground. / For 440V series,
special type of grounding shall be adopted. (Note 4)
Note: 1. For SF-GT series of inverters, brake resistor is not included. For information related to braking
resistor, please refer to section 3.4.5 and 3.7.3.
2. For information related to regenerative voltage, please refer to P.30 in Chapter 5.
3. +/P and -/N are the positive and negative terminals of the internal DC voltage of the inverter. In
order to strengthen the braking capacity during deceleration, it is suggested to purchase the
optional “brake unit” which is mounted between the ter/P and -/N. The “brake unit” can
effectively dissipate the feedback energy from the motor to the inverter when decelerating.
In case there is any problem on purchasing the “brake unit,” please feel free to contact us.
For safety and to reduce noise, the grounding terminal
of the inverter must be well grounded.
To avoid electric shocks and fire accident, external metal wire of electrical equipment should be
short and thick, and should be connected to special grounding terminals of an inverter. If several
inverters are placed together, all inverters must be connected to the common ground. Please
refer to the following diagrams and ensure that no circuit is formed between grounding terminals.
Best
Average
Poor
