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VCCX2 Controller Technical Guide

VCCX2 Controller Inputs

The VCCX2 Controller is designed with 8 analog inputs, 4 analog

outputs, 8 binary inputs and 8 relay outputs.

There are also 2 E-BUS Expansion Ports which allow the use of

communicating sensors and the E-BUS Modules.

See Figures 6, this page & Figure 7, page 26 for wiring details.

Detailed wiring for all inputs and outputs are found on the pages

that follow.

Figure 6: VCCX2 Controller Input Wiring

WIRING

VCCX2 Controller Inputs

Default Chapter3
- Table of Contents3
Overview9
- System Features9
- Applications10
- Part Number Cross Reference11
- Parts and Descriptions12
- Controller with Enclosure Components19
- Figure 1: VCCX2 Controller with Enclosure Components19
- Figure 2: VCCX2 Controller Dimensions20
- Refrigerant System Module (RSM) (Typical)21
Dimensions20
- VCCX-2 Controller20
- VCC-X EM1 Expansion Module22
- Figure 5: 12-Relay E-BUS Module Dimensions23
- Table 1: Voltage and Environment Requirements24
- VCCX2 Controller Inputs25
Wiring24
- Important Wiring Considerations24
  - Figure 6: VCCX2 Controller Input Wiring25
  - E-BUS Digital Room Sensor27
- VCCX2 Controller Outputs26
Figure 33: RSMV Outputs Wiring52
Wiring53
- Figure 34: RSMV-HP Inputs Wiring53
  - Figure 35: RSMV-HP Outputs Wiring54
  - RSMD Controller Inputs55
- RSMV-HP Controller Inputs53
- RSMV-HP Controller Outputs54
Figure 44: PREHEAT-X Controller to VCCX2 Controller Wiring63
Figure 45: Modular Service Tool SD, Modular System Manager SD, System Manager TS-L, and Prism 2 Software64
Start - up and Commissioning64
- Powering up and Configuration64
- Table 3: VCC-X EM1 Inputs & Outputs65
- Table 2: VCCX2 Controller Inputs & Outputs (Continued)65
- Table 2: VCCX2 Controller Inputs & Outputs65
- VCCX2 Controller Inputs66
- VCCX2 Controller Outputs67
- VCC-X EM1 Expansion Module68
- E-BUS 12-Relay Expansion Module69
Inputs and Outputs65
- VCCX2 Controller and EM1 Module Input/Output Maps65
Table 4: User-Configurable Relay Outputs69
Sequence of Operations70
- Supply Fan and Occupied/Unoccupied Operation70
- HVAC Modes of Operation71
- Economizer Operation73
- Dehumidification Mode74
- Reheat, Coil Suction, and Return Air Bypass Damper75
- Heating Mode76
- Ventilation Mode, Remote Contact Control, and Space Sensor Operation77
- IAQ Control, Morning Warm-Up and Cool-Down, and Single Zone VAV79
- Airflow Monitoring, Pre-Heater, Low Ambient and Duct Static Press81
- Duct Static Setpoint Reset and Duct Static Pressure Control82
- Building Pressure Control and Exhaust Duct Static Pressure Control83
- MUA, CAV/MUA, and Space Temperature Control84
- VAV W/Sa Tempering, Air to Air Heat Pump and Standard Defrost85
- Heat Pump Adaptive Defrost, WSHP, EXV and Head Pressure86
- Evaporative Condenser, WSE, OA Lockouts and Temp Protection87
- Alarm Detection and Sensor Failure Alarms89
- Mechanical Failure and Failure Mode Alarms91
- Title 24 Economizer Alarms92
- Table 5: VCCX2 Controller Trend Logs93
- Table 6: RSMV/RSMD Module Trend Logs93
- VCCX2 Controller Trend Logs93
- RSMV/RSMD/RSMZ Trend Logs and Trend Log Enumerated Values94
- Table 8: Trend Log Enumerated Values94
- Table 7: RSMZ Module Trend Logs94
- Table 6: RSMV / RSMD Module Trend Logs (Continued)94
- RSMZ Trend Logs and Trend Log Enumerated Values95
- Table 10: RSMZ Module RSM Alarm Trend Log95
- Table 9: RSMZ Module Comp Status Trend Log95
- Table 11: RSMZ Module VFD Status Trend Log96
- Table 13: RSMZ Module VFD Alarm 2 Trend Log96
- Table 12: RSMZ Module VFD Alarm 1 Trend Log96
- Trend Log Bit String Decoding97
Table 14: VCCX2 Trend Log Bit Strings98
Table 14: VCCX2 Trend Log Bit Strings (Continued)99
Troubleshooting100
- VCCX2 Controller and EM1 LED Diagnostics100
- Figure 46: VCCX2 Controller LED Locations101
- Temperature Sensor Testing102
Table 16: Duct Static Pressure/Voltage for Duct Static Pressure Sensors103
Table 17: Building Static Pressure/Voltage for Building Pressure Sensors103
Appendix A - System Configuration104
- Figure 48: Available Operator Interfaces104
  - Figure 49: Typical Stand-Alone System Layout105
    - Figure 50: Typical Interconnected System Layout106
    - Networked System Single Loop Layout107
  - Interconnected System Layout106
- System Configurations104
- Stand-Alone System Layout105
Figure 51: Typical Networked Single Loop System Layout107
Appendix B - Vccx2 Lcd Screens108
- Figure 52: LCD Display and Navigation Keys108
- Navigation Keys108
- Table 18: Navigation Key Functions108
- Table 19: Editing Key Functions108
- Main Screens Map109
- Setting Screens110
- Status Screens111
- Alarm Screens112
- Output Override Screens113
- Air Balance Screens and Factory Test Mode Screen114
Figure 53: VCCX2 Bacnet ® Connection to MS/TP Network115
Appendix C - Vccx2 Bacnet115
- VCCX2 Bacnet ® Parameters115
Index137

Brand	AAON
Model	OE338-26B-VCCX2
Category	Controller
Language	English

AAON OE338-26B-VCCX2 User Manual

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