York YR User Manual

JOHNSON CONTROLS
42
FORM 160.81-O1 (1020)
ISSUE DATE 10/05/2020
SECTION 2 - OPTIVIEW™ CONTROL CENTER
Optiview Control Center
ELECTRO-MECHANICAL STARTER SCREEN
Overview
This screen displays all information pertaining to an
Electro-Mechanical Starter.
Display Only
Motor Run (LED)
Illuminates when the compressor motor is being com-
manded to run.
Motor Current % Full Load Amps
Displays the motor current as a percentage of the Full
Load Amps (FLA) value. For the Electro-Mechanical
Starter this is the data returned by the CM-2 Board.
Current Limit Setpoint
Displays the current limit value in use. This value could
come from a 0 to 20mA, 4 to 20mA, 0 to 10VDC or 2
to 10VDC input in Analog Remote mode, PWM signal
in Digital Remote mode, MicroGateway interface in
ISN mode, or a locally programmed value.
Pulldown Demand Time Left
Displays the time remaining in the programmed
pulldown period if the value is nonzero.
Motor Temperature Switch (Open/Closed)
Displays the present position of the Motor Temperature
Switch. The normal position is closed. It is open when
there is a high temperature condition.
Programmable
Local Motor Current Limit
Access Level Required: OPERATOR
Allows the user to specify the maximum allowed mo-
tor current (as a percentage of FLA). When the mo-
tor current reaches this value, the slide valve will not
be permitted to load further. If the motor current rises
above this value, the slide valve will unload to reduce
the current to this value.
Pulldown Demand Limit
Access Level Required: OPERATOR
Allows the user to specify the current limit value (as a
percentage of FLA) to which the chiller will be limited
during the specified pulldown limit time. This value
will override the Motor Current Limit value during this
time period. This function is used to provide energy
savings following chiller start-up.
Pulldown Demand Time
Access Level Required: OPERATOR
Allows the user to set a period of time for which the
Pulldown Demand Limit will be in effect after the
chiller starts.
FIGURE 13 - ELECTRO-MECHANICAL STARTER SCREEN
LD11550

York YR Specifications

General

Brand	York
Model	YR
Category	Industrial Equipment
Language	English

Summary

General Safety Guidelines

Safety Symbols

Explains hazard symbols used in the manual for safe operation and identification.

Document Information and Maintenance

Document Changeability

Details on how the document content may change without notice for product improvement.

Revision Notes

Records technical information and other changes made to the document.

Associated Literature

Lists related forms and documents for further system information.

Conditioned Based Maintenance

Describes a proactive maintenance program leveraging real-time data for optimal operation.

System Description and Fundamentals

System Operation Description

Explains the YORK Model YR Chiller's components and refrigeration cycle.

Capacity Control

Details how the chiller manages output via slide valve for load conditions.

Chiller Operation Overview

Covers chiller start-up sequences, shutdowns, and service technician procedures.

OptiView™ Control Center Features

Control Center Introduction and Navigation

Overview of the control system, interface conventions, access levels, and navigation.

Core Chiller Screens

Details on Home, System, Evaporator, Condenser, and Compressor screens.

Specialty Screens and Controls

Covers Sensitivity, Hot Gas Bypass, Oil Separator, Starter, and Ground Fault screens.

Configuration and Setpoint Management

Screens for managing setpoints, system setup, schedules, users, and communications.

Data Logging and Reporting

Features for viewing history, security logs, trending data, and custom views.

Display Messages and Safety Shutdowns

Status and Routine Shutdowns

Describes chiller status, startup sequences, and routine shutdown causes.

Warning and Start Inhibit Messages

Alerts for conditions like clock failure, pressure limits, and startup prevention.

Safety Shutdown Faults

Details critical faults for Evaporator, Condenser, Oil, and Motor systems.

Printer Operations and Metric Conversion

Printer Reports and Types

Lists available print reports and compatible printer models (Okidata, Weigh-Tronix, Seiko).

Printer Connections and Setup

Details physical connections and configuration settings for printers.

SI Metric Conversion

Provides factors for converting English units to SI Metric values, including temperature.