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Related Manuals for Contemporary Controls BASstat BAST-121C-B2
Summary of Contents for Contemporary Controls BASstat BAST-121C-B2
- Page 1 BAST-121C-B2 BACnet Communicating Thermostat for Single Mode Heating/Cooling/Ventilation BASstat Single Mode Thermostat User Manual # UM-15095000-AA0...
- Page 2 Trademarks BASautomation, Contemporary Controls, and CTRLink are registered trademarks of Contemporary Control Systems, Inc. BACnet is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Powered by Sedona Framework is a trademark of Tridium, Inc. Other product names may be trademarks or registered trademarks of their respective companies.
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Page 3: Table Of Contents
Contents Introduction ..........................4 1.1. Features and Benefits ....................... 5 1.2. Product Image and Main Features ..................6 BASstat 121C-B2 ........................6 Specifications ........................... 7 2.1. Inputs ..........................7 2.2. Outputs ..........................7 2.3. Communication ........................7 2.4. Electrical ..........................7 2.5. -
Page 4: Introduction
Optionally, the buttons could be locked to limit user access to the Engineering Menu after installation is complete. The second method is configuring the thermostat over the BACnet network using a BACnet client device or software such as Contemporary Controls’ free BACnet Discovery Tool. -
Page 5: Features And Benefits
1.1. Features and Benefits • Stand-alone thermostat algorithm or fully BACnet network-controllable • BTL listed with B-ASC device profile for easy integration into BACnet networks • 24VAC (+/-10%) power input • Single mode heating (default) or cooling control types • BACnet MS/TP with baud rate selections up to 76.8kbps •... -
Page 6: Product Image And Main Features
1.2. Product Image and Main Features BASstat 121C-B2 UM-15095000-AA0 Page 6... -
Page 7: Specifications
2 Specifications 2.1. Inputs Item Description Temperature Display Range 14 to 140°F (-10 to 60°C) Temperature Display Resolution 0.1°F (0.1°C) Temperature Accuracy ±1.8°F (±1.0°C) with all outputs off Setpoint Range 32-122°F (0-60°C) in 0.5° (°F or °C) increments Remote Temperature Sensor Provision for NTC Type 3kΩ... -
Page 8: Environmental
2.5. Environmental Item Description Operating Temperature 32°F to 122°F (0 to 50°C) Storage Temperature 14°F to 140°F (-10°C to +60°C) Relative Humidity 5 to 95% non-condensing 2.6. Electromagnetic Compatibility The BAST-121C-B2 complies with the following specifications and bears the CE mark in accordance with the provisions of the Electromagnetic Compatibility (EMC) Directive 2004/108/EC based on the following specifications: Standard... -
Page 9: Mechanical (All Dimensions Are In Mm)
2.7. Mechanical (all dimensions are in mm) Mounts directly onto wall, panel, standard 65×65mm junction box (hole pitch 60 mm) or standard 2×4- inch vertical junction box (hole pitch 83.5mm) Width: 94mm Height: 118mm Depth: 34mm UM-15095000-AA0 Page 9... - Page 10 UM-15095000-AA0 Page 10...
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Page 11: Installation
3 Installation The BASstat is intended for surface-mount installation at eye-level on an interior wall, away from direct sunlight or direct air movement. The display (top half) can be removed from its base by loosening the small Philips screw at the bottom of the display. Once the display is removed from the base, the base can be mounted onto the wall with appropriate fasteners. -
Page 12: Power Supply Precautions
3.3. Power Supply Precautions Internally, the BASstat utilizes a half-wave rectifier and can share the same AC power source with other half-wave rectified devices. Sharing AC power with full-wave rectified devices is NOT recommended. AC power sources that power several half-wave devices have a common secondary connection called COMMON, LO, or GROUND. -
Page 13: Operation
4 Operation 4.1. User Mode User-side control is accomplished with six buttons – MODE (Heat/Cool, or Ventilate), FAN (Auto or On), UP, DOWN, SET, and POWER. There are also options to lock the panel buttons to limit user access if so required. A large LCD display indicates setpoint, space temperature, occupancy status, and current mode of operation using graphical icons. -
Page 14: User Mode Thermostat
User Mode Thermostat Item Description Remarks Normal Display Display current room or set- Use the (SP) parameter in the point temperature Engineering Menu or [MSV6] Display Option for BW2 or [MSV7] Display Option for B2 model to choose Current room or Set- point temperature on display. -
Page 15: User Mode Flow Chart
User Mode Flow Chart 4.2. Control Type The factory default control type is Heating only. The installer must decide the control type suitable for the application and set it to the desired function. Control type is only configurable by the installer using Engineering Mode Menu or BACnet supervisor. -
Page 16: Fan Output In Heat Mode
Fan Output in Heat Mode By default, the BASstat thermostat will provide a Fan output signal during heating or cooling cycles. Local BASstat fan control can be configured from Engineering Menu item (F-Ht) or BACnet object [BV15] Fan Output For Heating. The default value is “1”. To disable fan control signal output for heating coming from the BASstat, set this value to “0”. -
Page 17: System Mode
System Mode • The default control type is heating only (2-stage binary or modulating analog). • Control Type can be selected by setting [MSV1] within one minute after setting menu item [OPts] or [AV37] to a data “1”. Once set, a factory reset will not affect this setting. -
Page 18: Minimum Cooling Setpoint And Maximum Heating Setpoint
• To disable short cycle checking, set the short cycle to 0 minutes. NOTE: Do not use this value unless the heating and cooling equipment is equipped with an internal timer. Damage to equipment may occur. Minimum Cooling Setpoint and Maximum Heating Setpoint •... -
Page 19: Engineering Mode Menu
4.3. Engineering Mode Menu Thermostat configuration can be performed using the engineering mode menu described below or BACnet objects using a BACnet client tool such as Contemporary Controls free BACnet Discovery Tool. It is highly suggested that engineering mode be operated by trained installers only, because it is related to system parameters that will affect the control results. -
Page 20: Engineering Menu Items Table
Engineering Menu Items Table °C Scale °F Scale Item Mnemonic Description Step Default Range Defaul Range Deadband 0~10 0~18 0.5 (°C/°F) Unoccupied(ESI) cooling set point ESIC 25~35 82.5 77~95 1.0 (°C/°F) Unoccupied(ESI) heating set point ESIH 10.0~22.0 50.0~72.0 1.0 (°C/°F) Integral Time and Output Cycle Time 0~500 0-500... - Page 21 °C Scale °F Scale Step Item Mnemonic Description Default Range Default Range 0: N.O. ESI (DI1) digital sensor contact definition 1: N.C. Modulating Cooling direct/ reverse signal rE-C 0: (Direct) output 1: (Reverse) Modulating Heating direct/ reverse signal rE-H 0: (Direct) output 1: (Reverse) 0: built-in...
- Page 22 °C Scale °F Scale Step Item Mnemonic Description Default Range Default Range dLyH 1 (minutes) Heating Short Cycle Heating Maximum Cycles per Hour cycH 1 (cycles/hour) 0: Cooling Only 1: C&H Manual 2: C&H Auto 3: Heating Only tyPE Control Type 4.
- Page 23 °C Scale °F Scale Step Item Mnemonic Description Default Range Default Range Reset all parameters including communication Press MODE to and control algorithm to the factory defaults. Caution! load reset (This command does not affect the heat or cool mode setting). Press MODE to Exit Engineer Mode Menu exit...
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Page 24: Lock Function Setup And Examples
Lock Function Setup and Examples The 16-bit binary encoded decimal register accessed through Lock [AV17] BACnet object and LOC Engineering Menu item is used to enable/disable features in the thermostat. The first 10 bits are used (bit 0 ~ bit 9), bits 10~15 are reserved/unused. Bits are represented by their decimal values and are added or subtracted to toggle from “0”... -
Page 25: Bacnet Objects And Network Configuration
All configuration parameters are settable through use of the buttons on thermostat by entering the Engineer Menu, or once installed on the BACnet network, configuration can also be altered using BACnet commands. Network command-based configuration can also be accomplished using a laptop/computer/tablet and Contemporary Controls’ free BACnet Discovery Tool. MS/TP Communication Configuration... - Page 26 End-of-Line Termination The BASstat does not provide End-of-Line termination. If the BASstat is the first or last device on the MS/TP bus, a termination resistor (120Ω) must be applied across pins 16 and 17 of the input terminal. Addressing The MAC address can be set from Engineering Menu item (Addr) with values of 1 - 127. The Baud rate can be set from Engineering Menu item (bAud) 9.6kbps –...
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Page 27: Bacnet Object Table
BACnet Object Table Object name Type & Instance Range Object Property (Readable/Writable) BACnet Thermostat Device 700001 Model Name (R) Application Software Version (R) Object Identifier (R) Object Name (R/W) 32 characters (max.) Max_Master (R/W) 1~127 Type & Readable/ Object name Description Range and Definition Instance... - Page 28 Type & Readable/ Object name Range and Definition Description Instance Writable CO2 Control Output CO2 Control 0~100: 0〜100 % AI 11 Percentage Output Percentage Voltage Input Value Voltage Input Value 0〜150 (0.0〜15.0 VDC) AI 12 Analog Input 1 Analog Input 1 0〜1000 (0.0%〜100.0%) AI 13 Value...
- Page 29 Type & Readable/ Object name Description Range and Definition Instance Writable °C :0~500 (0.0～50.0℃) High Limit for Set- °F: 320~1220 High Setpoint Limit Point Temperature AV 14 (32.0~122.0°F) Offset for °C:-100~100 (-10.0~10.0 °C) Current Temperature Offset AV 15 °F:-180~180(-18.0~18.0 °F) Temperature °C :0~100 (00~10.0 °C) Proportional Band-...
- Page 30 Type & Readable/ Range and Definition Object name Description Instance Writable 0~4194302 (NOTE: Changing this value needs to unlock modification for communication parameters in advance. AV 21 Device Instance BACnet Device Instance i.e., AV17=0~255 or 512~768. Please refer to LOCK(AV17) for details) -300~300 (-30.0～30.0 Humidity Offset Value AV 22...
- Page 31 Type & Readable/ Object name Description Range and Definition Instance Writable Minimum cooling °C 0-500 (0.0 ~50.0 C) temperature Minimum cooling F320-1220 (32-122.0 F) setpoint AV 39 temperature setpoint Maximum Heating Maximum Heating °C 0-500 (0.0 ~50.0 C) temperature AV 40 temperature setpoint F320-1220 (32-122.0 F) setpoint...
- Page 32 Type & Readable/ Object name Description Range and Definition Instance Writable Status of Relay Relay 7 Status 0: Off, 1: On BI 9 7 (Fan) Dl 1 Status Status of Digital Input 1 0: Off, 1: On BI10 Dl 2 Status Status of Digital Input 2 0: Off, 1: On BI11...
- Page 33 Type & Readable/ Object name Description Range and Definition Instance Writable On/Off Control of On-Off Control 0: Off, 1: On BV 5 Thermostat Outputs 0: °C Temperature Scale °C/ °F 1: °F BV 6 On/Off Control of Relay Relay 1 Control 0: Off, 1: On 1 (Stage 1) Type &...
- Page 34 Type & Readable/ Object name Description Range and Definition Instance Writable 1: Built-In Temp. Sensor 2: Remote Temp. Sensor 3: Temperature Source MSV3 Current Temperature Source Assigned through BACnet Lowest Fan speed 1: Stop 2: Low Lowest Fan Speed MSV 4 in Auto Fan mode 3: Med.
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Page 35: Warranty
5 Warranty Contemporary Controls (CC) warrants this product to the original purchaser for two years from the product shipping date. Product returned to CC for repair is warranted for one year from the date the repaired product is shipped back to the purchaser or for the remainder of the original warranty period, whichever is longer. - Page 36 United States China United Kingdom Germany Contemporary Control Contemporary Controls Contemporary Controls Contemporary Controls Systems, Inc. (Suzhou) Co. Ltd GmbH Tel: +1-630-963-7070 Tel: +86 512 68095866 Tel: +44 (0)24 7641 3786 Tel: +49 341 520359 0 Fax: +1-630-963-0109 Fax: +86 512 68093760...
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