IMO SD1 Series - 3.3 Overview of STO Function

SD1 Series Inverters Installation Guidelines
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Figure 3-5 3PH terminals of main circuit (230V, ≤0.75kW, and 400V, ≤2.2kW)
Figure 3-6 3PH terminals of main circuit (230V, ≤1.5kW, and 400V, 4-22kW)
Figure 3-7 3PH terminals of main circuit (30-37kW)
Figure 3-8 3PH terminals of main circuit (45-110kW)
Terminal
Function
L, N
Single phase AC input terminals, connected to the power supply.
R, S, T
Three phase AC input terminals, connected to the power supply.
PB, (+)
External dynamic braking resistor terminal
(+), (-)
Input terminal of the DBU or DC bus
U, V, W
Three phase AC input terminals which are generally connected to motor.
PE
Protective grounding terminal
Note:
 Do not use asymmetric motor cables. If there is a symmetrically grounding conductor in the
motor cable in addition to the conductive shield, connect the grounding conductor to the
grounding terminal at the inverter and motor ends.
 Route the motor cable, input power cable and control cables separately.
3.2.3 Wiring of main circuit terminals
1. Connect the ground wire of the input power cable to the ground terminal (PE) of the inverter