Asco 5101 Operation Manual

5101 Engine Start Monitoring System

TABLE OF CONTENTS

Page

GENERAL INFORMATION

Overview .................................................................................................................................................................................................... 3

Main Specifications ................................................................................................................................................................................... 3

Dimensions 5101-GEN Reference Drawing, 5101-ATS Reference Drawing .............................................................................................. 4

SYSTEM ARCHITECTURE

SYSTEM COMPONENTS/REQUIREMENTS

Generator Module (5101-GEN) Requirements ........................................................................................................................................... 6

Transfer Switch Module (5101ATS) Requirements .................................................................................................................................... 6

DESCRIPTION OF OPERATIONS

Testing........................................................................................................................................................................................................ 8

LED Status ................................................................................................................................................................................................. 8

CONFIGURATION and INSTALLATION

Steps of Installation .............................................................................................................................................................................. 9-11

SETTINGS

5101-GEN Module: DIP Switches ............................................................................................................................................................ 12

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START-UP CHECKLIST

CALIFORNIA PROPOSITION 65 WARNING

INDEX

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Florham Park, NJ 07932-1591

Call 1 800 800-2726 (ASCO) for sales or service

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5101 Engine Start Monitoring System

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5101 Engine Start Monitoring System

General Information

Overview

A susceptible location for a control wiring fault is in the long distance wire run between a transfer switch’s locations to
the generator’s location. This wire run could travel through hundreds of feet of conduit in any part of a facility where
damage due to construction or other factors could go unnoticed for extended periods. This could result in generators
failing to start when called upon by transfer switches during outage conditions.

The ASCO 5101 Engine Start Monitoring System (5101-ATS/5101-GEN) is a system designed to forward engine start
signals while continuously monitoring for wiring faults according to the electrical code NEC 700.10. Typically, the
transfer switch control circuits use a relay contact to signal the generator to start. The transfer switch engine start contact
is connected to the generator using two wires. The generator and transfer switch may be close together or may be a long
distance apart. In some cases, a single transfer switch is used with a generator, but in other cases multiple transfer
switches may need to start the same generator.

During proper operation, the generator controls detect the relay state and determine if the generator should be started.
Depending on the system, the contact may either open or close to signal a start condition. The engine start relay has only
two states: open or closed. In the event that a fault occurs in the signal wiring, the generator start function may not
function properly.

The 5101 Engine Start Monitoring System uses two modules: (5101-ATS and 5101-GEN) one at each transfer switch and
one at the generator. The generator module receives the engine start signal from each ATS module (up to 8 modules) and
monitors for any faults in the wiring. If the 5101-GEN receives any engine start signal or if it detects any faults, it will
send the start signal to the generator and provide an alarm.

When used with switchgear or power control systems, the 5101 Engine Start Monitoring System should only be applied to
the wiring between the transfer switches and gear. The 5101 solution should not be applied between the power control
system and generator due to the fact that this is considered part of the generator control wiring and requires many more
critical signals to properly operate the generator beyond the traditional two wire engine start (ex. synchronization, breaker
control and cranking control signals, etc.).

Main Specifications

Parameter Description

DC Power

Internal Ride Through Power 3 seconds minimum

Mounting 35mm DIN rail

Operating Temperature Range

Maximum Distance 1000 feet one way from ATS to GEN (2000 feet loop)*

Maximum Wire Loop Resistance Resistance must be less than 100Ω ohms

Generator Module Start Contact 1A 30VDC (Form C)

Generator Module Alarm Contact 1A 30VDC (Form C)

Wire Gauge 12-30 AWG stranded

*Contact ASCO Power Technologies for longer distances.

9-27V 15W max (Gen- Module) / ATS module does not
require power

-20℃ to 70℃

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5101 Engine Start Monitoring System

Dimensions

5101-GEN Module Reference Drawing

5101-ATS Module Reference Drawing

4

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5101 Engine Start Monitoring System

System Architecture

Figure 1 shows the overall structure of the 5101 Engine Start Monitoring System, while Figure 2 shows a simplified
version of the installation.

Figure 1. System Block Diagram

Figure 2. Installation Diagram

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