York MAXE OPTIVIEW YK - Fig. 64 - Interface, Hot Gas Bypass

To Next Page

To Previous Page

YORK INTERNATIONAL

128

FORM 160.54-M1(503)

FIG. 64 – INTERFACE, HOT GAS BYPASS

OPTIONAL

ANALOG

I/O BOARD

CONDENSER

TRANSDUCER

PRV

POTENTIOMETER

POSITIONING

SIGNAL

MICRO

BOARD

EVAPORATOR

TRANSDUCER

EVAP.

PRESSURE

COND.

PRESSURE

18 21

RS-485

COM 3

J12

ACTUATOR

POSITIONING

( – )

( + )

VANE

POSITION

P10

OPEN

VANE

POSITION

0 - 100%

2.5 K

2-10 VDC

OPTIONAL

HOT GAS

BYPASS

ACTUATOR

LD04563

Hot Gas Bypass

Main Page

Table of Contents4
Section 1 - Introduction8
Section 2 - System Architecture10
Fig. 5 - Operation Sequence Timing Diagram17
(Electro-Mechanical & Solid State Starter Applications)17
Fig. 6 - Operation Sequence Timing Diagram18
(Compressor Motor Variable Speed Drive Applications)18
Section 3 - Microboard19
Fig. 7 - Microboard28
Fig. 8 - Flash Memory Card29
Fig. 9 - Microboard30
Fig. 10 - Microboard Lamp Dimmer Circuit34
Fig. 11 - Microboard Serial Data Communications Ports35
Fig. 12 - Configurable Analog & Remote Setpoint Inputs36
Section 4 - I/O Board37
Fig. 13 - I/O Board39
Fig. 14 - I/O Board Digital Inputs40
Fig. 15 - I/O Board Typical Opto-Coupler Circuit41
Fig. 16 - I/O Board Typical Field Connections41
Fig. 17 - I/O Board Digital Outputs42
Section 5 - Liquid Crystal Display45
Fig. 18 - Display, Mounting48
Fig. 19 - Liquid Crystal Display Assembly - Sharp Lq10D367 Display49
Fig. 20 - Liquid Crystal Display Assembly - Sharp Lq10D421 Display49
Fig. 21 - Liquid Crystal Display Assembly - Nec Nl6448Ac33-24 Display50
Fig. 22 - Liquid Crystal Display Assembly - Lg Semicon Lp104V2-W51
Fig. 23 - Liquid Crystal Display Typical Control Signal Timing51
Fig. 24 - Display (Sharp Lq10D367) Lamp Replacement52
Fig. 25 - Display (Sharp Lq10D421) Lamp Replacement52
Fig. 26 - Display (Nec Nl6448Ac33-24) Lamp Replacement53
Fig. 27 - Display (Lg Semicon Lp104V2-W) Lamp Replacement53
Section 6 - Display Interface Board54
Fig. 28 - Display Interface Board55
Section 7 - Display Backlight Inverter Board56
Fig. 29 - Display Backlight Inverter Board57
Fig. 30 - Display Backlight Inverter Board58
Fig. 31 - Display Backlight Inverter Board58
Section 8 - Keypad59
Fig. 32 - Keypad60
Fig. 33 - Keypad61
Section 9 - Power Supply62
Fig. 34 - Power Supply62
(Refer to Optiview Control Center Wiring Diagram for Wire Connections)63
Section 10 - Current Module (CM-2)64
Fig. 36 - CM-2 Current Module (Electro-Mechanical Starter Application)66
Fig. 37 - CM-2 Current Module (Electro-Mechanical Starter Applications)66
Fig. 38 - CM-2 Current Module - Interface, Current Transformers67
Variable Resistors67
Section 11 - Solid State Starters68
Fig. 39 - Mod "B" Liquid Cooled Solid State Starter (Lcsss) - Interface70
Fig. 40 - Solid State Starter Logic Board71
Fig. 41 - Mod "A" Liquid Cooled Solid State Starter (Lcsss) - Interface74
Section 12 - Adaptive Capacity Control Board75
Fig. 42 - Compressor Motor Variable Speed Drive81
(Vsd) Adaptive Capacity Control (Acc) Board81
Fig. 43 - Adaptive Capacity Control (Acc) Board - Interface82
Fig. 44 - Adaptive Capacity Control (Acc) Board83
Section 13 - Proximity Probe84
Fig. 45 - Proximity Probe - Interface Probe86
Fig. 46 - Proximity Probe - Interface Probe86
Fig. 48 - Proximity Probe88
Section 13A - High Speed Thrust Bearing Limit Switch89
Fig. 49 - High Speed Thrust Bearing Limit Switch - Interface89
Fig. 50- High Speed Thrust Bearing Limit Switch90
Section 14 - Refrigerant Level Control91
Fig. 51 - Refrigerant Liquid Level Sensor93
Fig. 52 - Refrigerant Liquid Level Control - Interface94
Section 15 - Oil Pump Variable Speed Drive95
Fig. 53 - Oil Pump Variable Speed Drive (Vsd)97
Fig. 54 - Oil Pump Vsd / Oil Heater Control - Interface98
Fig. 55 - Oil Pump Vsd Speed Control Signal98
Section 16 - Microgateway99
Fig. 56 - Microgateway Interface Block Diagram99
Section 17 - Pressure Transducers100
Fig. 57 - Pressure Transducers101
Section 18 - Temperature Thermistors102
Fig. 58 - Leaving Chilled Liquid Temperature103
Fig. 59 - Return Chilled Liquid Temperature108
Fig. 60 - Return and Leaving Condensing Water111
Fig. 61 - Oil and Discharge Temperature114
Fig. 62 - Drop Leg Refrigerant Sensor119
Fig. 63 - Evaporator Refrigerant Sensor119
Section 19 - Remote Setpoints120
Section 20 - Hot Gas Bypass125
Fig. 64 - Interface, Hot Gas Bypass128
Section 21 - Smart Freeze Protection129
Section 22 - Surge Protection131
Section 23 - System Calibration133
Electro-Mechanical Starter Applications133
Solid State Starter Applications134
Mod "B" Serial Data Interface Liquid Cooled Solid State Starter134
Mod "A" Multiplexed Data Interface Liquid Cooled Solid State Starter135
Compressor Motor Variable Speed Drive136
Pre-Rotation Vanes Position Potentiometer137
Proximity Probe138
Safety Shutdown Reset/Inspection Procedure139
High Speed Thrust Bearing Limit Switch140
Refrigerant Level Control140
Oil Pump Variable Speed Drive142
Standby Lubrication142
High Condenser Pressure Warning Threshold143
Brine Low Evaporator Pressure Cutout143
Leaving Chilled Liquid Temperature Control Sensitivity143
Drop Leg Refrigerant Temperature144
Smart Freeze Protection144
Evaporator Refrigerant Temperature144
Hot Gas Bypass Control144
Chiller Starts and Operating Hours Reset145
Service Phone Numbers146
Surge Protection146
Sales Order Data146
Custon User ID and Passwords147
Record Setpoint Changes148
Chiller Style/Compressor149
Flow Switch151
Section 24 - Diagnostics & Troubleshooting152
Main Diagnostics Screen153
Fig. 65 - Main Diagnostics Screen153
Keypad Test154
Fig. 66 - Keypad Test Screen154
Display Test155
Fig. 67 - Display Test Main Screen155
Fig. 68 - Bit Patterns Test Screen156
Serial Inputs / Outputs Test157
Fig. 69 - Serial Inputs / Outputs Test Screen157
Fig. 70 - Microboard - Com 5 Serial Data Port158
Digital Iinputs / Outputs Test159
Fig. 71 - Digital Inputs / Outputs Test Screen159
Anallog Inputs Test162
Fig. 72 - Analog Inputs Test Screen162
Section 25 - System Commissioning Checklist165
Section 26 - Service Information Letters / Bulletins168
SI0006 - Software Enhancements Effective May 2001168
SI0019 - Software Enhancements Effective March 2002170
SI0034 (203) - Software Enhancements Effective AUGUST 2002174
SI0058 - Software Enhancements Effective February 2003178
SI0062 - Software Enhancements Effective March 2003180

York MAXE OPTIVIEW YK - Fig. 64 - Interface, Hot Gas Bypass

Table of Contents

Related product manuals