York SSS 26LK-B - User Manual

MODELS SSS 7L-B, 14L-B, 26L-B, 33L-B
7LK-B, 14LK-B, 26LK-B, 33LK-B
(STYLE B)
NOTE
Unless otherwise noted, information in this instruction
is applicable to all style starters of the same size.
Example: 26L-B and 26LK-B
00282VIP
LIQUID COOLED
SOLID STATE STARTER
OPERATION Supersedes: 160.00-O2 (611) Form 160.00-O2 (419)
Issue Date:
April 30, 2019

Summary

SECTION 1 - THEORY OF OPERATION

Style B Liquid Cooled Solid State Starter Overview

Overview of the Style B LCSSS, its features, and application with OptiView Control Center.

Solid State Starter Cooling Loop

Details the water-to-water heat exchanger and coolant system for SCR cooling.

Motor Protection

Outlines circuits protecting the motor from high current and other fault conditions.

SECTION 4 - SAFETY SHUTDOWNS

105% Motor Current Overload

Describes shutdown for motor current exceeding 105% of FLA for 40 seconds.

High Temperature

Explains shutdown due to SCR heatsink temperature exceeding 212°F.

High Instantaneous Current

Details shutdown when motor current exceeds a peak threshold for one second.

Output Current Imbalance

Details shutdown for phase current imbalance exceeding 30% of average for 45 seconds.

Open SCR

Explains shutdown when an SCR fails to turn on or is improperly gated.

Phase Rotation

Describes shutdown due to incorrect input power phase rotation during startup.

Shorted SCR

Details shutdown when an SCR is detected as shorted.

SECTION 5 - CYCLING SHUTDOWNS

High Supply Line Voltage

Explains shutdown when input voltage exceeds thresholds for 20 continuous seconds.

Initialization Failed

Describes shutdown due to failed communication between Micro Board and Logic/Trigger Board.

Invalid Current Scale Selection

Details shutdown caused by improper current transformer connections or scaling.

Low Phase Temperature Sensor

Low Supply Line Voltage

Phase Locked Loop

Phase Loss

Power Fault

Run Signal

Serial Communications

Stop Contacts Open

SECTION 7 - START-UP INSTRUCTIONS

Start-Up Checklist

Fill Cooling Loop

SECTION 8 - MAINTENANCE AND TROUBLESHOOTING

Troubleshooting the Closed Loop Coolant Pump

Troubleshooting Processes

Verify Shorted SCR

Verify Open or Shorted SCR Gate

Verify Gate Driver Output

Verify Real Phase Current Imbalance

Verify False Phase Current Imbalance

Removing SCR Assemblies

Installing SCR Assemblies

York SSS 26LK-B Specifications

General

Brand	York
Model	SSS 26LK-B
Category	Engine
Language	English