# Soft-starter bypass command interface

Canonical URL: https://eloragrid.ai/symbols/soft-starter-bypass-command-interface
Publisher: Elora Grid
Updated: 2026-11-03
Lookup label: SBCI
Drawing use: Schematic
Reference families: Manufacturer

Representation: Functional block
Installation focus: switchgear
Input: Soft-starter operating status
Output: Bypass contactor command

Requests bypass connection only under the conditions defined by the selected soft starter.

## In plain English

### What this block does

Requests bypass connection only under the conditions defined by the selected soft starter.

### A simple example

In a switchroom motor-control panel, a ventilation motor can receive an automatic start request while a local selector and the motor protection determine whether the feeder is available. For this reference, the drawing identifies “Soft-starter operating status” at the input and “Bypass contactor command” at the output. Bypass control is product-specific.

### What the drawings help you do

Start at the named input: Soft-starter operating status. Identify its source device or document and the state represented on the drawing. Follow the named output: Bypass contactor command. Cross-reference its destination and separate the command from confirmation that the equipment responded.

### Terms

- Input: Soft-starter operating status
- Output: Bypass contactor command
- Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Concept diagram: Soft-starter operating status → SBCI → Bypass contactor command
A reading guide. The entry's original illustration and input/output facts describe this application.

- [SEL-710 motor protection and control](https://selinc.com/products/710/)


## What it represents

Requests bypass connection only under the conditions defined by the selected soft starter. A motor feeder combines switching, motor protection and an operating command. Starting permission, running feedback and protection trip are different signals even where one relay or controller processes all of them.
In a switchroom motor-control panel, a ventilation motor can receive an automatic start request while a local selector and the motor protection determine whether the feeder is available. For this reference, the drawing identifies “Soft-starter operating status” at the input and “Bypass contactor command” at the output. Bypass control is product-specific.
Link the motor tag to its contactor, protective device and process permissives. The control diagram must identify stop priority, feedback and restart philosophy without supplying unverified settings. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation.

## How to read it

- Start at the named input: Soft-starter operating status. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Bypass contactor command. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Bypass control is product-specific.
- Link the motor tag to its contactor, protective device and process permissives. The control diagram must identify stop priority, feedback and restart philosophy without supplying unverified settings.

## Information to show or reference

- Label the source and connection reference for soft-starter operating status.
- Identify the destination and defined state of bypass contactor command.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: Bypass control is product-specific.

## Important distinction

Bypass control is product-specific. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.

## Facts

- Representation: Functional block
- Installation focus: Switchgear
- Input / boundary: Soft-starter operating status
- Output / connection: Bypass contactor command
- Lookup label: SBCI is a library lookup label, not a standard device designation.

## Public references

- [SEL-710 motor protection and control](https://selinc.com/products/710/) — SEL. Public technical context for motor-feeder control interfaces. Motor feeder thermal, starting and control functions. The application text and educational graphic are independently authored; the publisher does not certify this representation.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.