Power Connections - Emerson Digistart IS1x0043B series User Manual

Safety Rating Mechanical
Information Data Installation
4.3

Power connections

4.3.1 Motor connection
Digistart IS soft starters can be connected to the motor in-line or inside delta (also called three-wire and six-wire connection). When
connecting in inside delta, enter the motor full load current (FLC) for Pr 1A. The Digistart IS will automatically detect whether the
motor is connected in-line or inside delta and will calculate the correct inside delta current level.
For personnel safety, the power terminals on models up to IS1x0105B are protected by snap-off tabs. When using large
NOTE
cables, it may be necessary to break off these tabs.
Models which are internally bypassed do not require an external bypass contactor.
Internally bypassed models:
IS1x0023B, IS1x0043B, IS1x0053B, IS1x0076B, IS1x0097B, IS1x0105B, IS2x0145B, IS2x0170B, IS2x0200B, IS2x0220B,
IS3x0255B, IS4x0350B, IS4x0425B, IS4x0500B, IS4x0700B, IS4x0820B, IS4x0920B, IS4x1000B
Non-bypassed models:
IS3x0255N, IS4x0360N, IS4x0430N, IS4x0650N, IS4x0790N, IS4x0930N, IS561200N, IS561410N, IS561600N
4.3.2 In-line installation
 In-line installation, internally bypassed
Figure 4-7 Power connections - in-line installation, internally bypassed
KM1 F1
1/L1
3/L2
5/L3
E
Main contactor is the default setting for Pr 4A Relay A Action (COM1, RLO1).
NOTE
22
Electrical Keypad Quick Start
Installation and Commissioning
Status
2/T1
4/T2
6/T3
COM1
RLO1
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Operation Programming Diagnostics Application
KM1
F1
M
3
KM1
Technical Maintenance Options
Examples Data
Main contactor (optional)
Semiconductor fuses (optional)
Digistart IS User Guide
Issue: 4