York YVWA - FIGURE 4 - Basic System Control and VSD System Architecture

JOHNSON CONTROLS
18
FORM 201.30-ICOM1 (519)
ISSUE DATE: 05/22/2019
SECTION 2 - PRODUCT DESCRIPTION
LD15158
3 Phase Power Line
AC/DC Rectier
Power Driver
IGBT Gate Driver
VSD Logic Board
Inverter
PWM Signal
Signal From Main Control Panel
Rectier
Compressor 1
Compressor 2
Rectier Controller
SCR Trigger Board
(IGBT)
LD15028
INPUTS
Pressure Transducers
Temperature Sensors
Switches
Liquid Flow
High Pressure
Start/Stop
Level
Customer Supplied
Contacts
CONTROL
PANEL
(Chiller Control
Board)
Microprocessor
User Interface
Display and
Keypad
DISPLAY
KEYPAD
MOTOR
OUTPUTS
(Relay Output Board)
Solenoids
Alarm
Pump
Compressor Heater
Run Status
VSD
VSD Logic Board
SCR Trigger Board
Power Components
PWM (Speed Control)
COMMUNICATIONS
Building Automation
Printer Modem
FIGURE 4 - BASIC SYSTEM CONTROL AND VSD SYSTEM ARCHITECTURE