BACnet ATEC Start-up Procedures Siemens Industry, Inc.
Table of contents Before You Begin ......................................................................................4 Setting Controller Address ....................................................................... 5 Setting the Application .............................................................................5 Enabling Actuators ...................................................................................6 Specifying Motor Setup ..........................................................
Before You Begin Before You Begin NOTE: WCIS version 3.0 or later must be used to configure Siemens Building Technologies BACnet MS/TP Equipment Controllers. Do not check the Metric checkbox in the Device Properties dialogue box if the controller is communicating through the MS/TP driver in the field panel. Metric can be checked only if the controller is communicating through a router.
Setting Controller Address Setting Controller Address Set CTLR ADDRESS to the BACnet MS/TP MAC address. (0 through 127 = Master; 128 through 254 = Slave). NOTE: Set the controller address and MS/TP network baud rate prior to connecting the controller to the network. See Configuring BACnet Parameters [ 16]. Setting the Application Add the TEC to your job database and select one of the following applications.
Enabling Actuators Enabling Actuators CAUTION The controller's DOs control only 24 Vac loads. The maximum rating is 12 VA for each DO. The points that determine actuator run times are: MTR 1 TIMING (damper acutator) MTR 2 TIMING (valve actuator, Application 2863, 2865 and 2867) Your application may not have or use MTR2. Use and/or to set run time(s) for the actuator(s) used by your application. Damper Actuator Run Time Damper Actuator Setting (seconds) 50 Hz 60 Hz GDE131.1 125 90 GLB131.
Setting Number of Heat Stages Specifying Motor Setup MTR SETUP determines which actuators are controlled by the application and whether they are direct or reverse acting. Set MTR SETUP according to Table MTR SETUP Values. NOTE: When MTR SETUP is changed, all enabled actuators will calibrate. Wait until each actuator has completed its calibration before continuing.
Selecting Automatic Calibration Option Selecting Automatic Calibration Option Using Table CAL SETUP Options set CAL SETUP to the value that best meets your job requirements. If appropriate, change CAL TIMER from the default of 12 hours. This setting applies only if your choice for CAL SETUP includes Option 4. NOTE: The air velocity sensor should be calibrated at least once every 24 hours.
Setting Room Temperature Setpoints Setting Room Temperature Setpoints Day (or occupied) cooling setpoint: DAY CLG STPT Day (or occupied) heating setpoint: DAY HTG STPT Night (or unoccupied) cooling setpoint: NGT CLG STPT Night (or unoccupied) heating setpoint: NGT HTG STPT 1. If the room temperature sensor has a setpoint dial that will be used, set STPT DIAL to YES. Otherwise, set STPT DIAL to NO.
Configuring the Room Unit comfortable than a space where the deadband is being used, but may use more energy. 4. Set the room temperature setpoints to the desired values. Heating setpoints are not present in cooling only applications.) Configuring the Room Unit STAT SUPV values are additive; set STAT SUPV to the sum of the configured selection. A value of 3 indicates the stat has both humidity and temperature.. 0 - for the Sensing only Room Unit.
Enabling Wall Switch Enabling Wall Switch If a wall switch is used for day/night control, enable it by setting WALL SWITCH to YES. In addition, UI 2 must be configured for digital input (set to 0). Otherwise, leave WALL SWITCH at its default value of NO. If WALL SWITCH is not enabled, UI 2 can be used as a Spare (Analog or Digital). Setting Duct Area If provided, enter the duct area (sq ft or sq m) into DUCT AREA (and also into HTGDUCT AREA, where applicable) and continue to Setting Flow Coefficient.
Setting Flow Coefficient Setting Flow Coefficient 1. Set FLOW COEFF to the appropriate value found in Table Box Manufacturer Flow Coefficients. This value is a starting point for the air balancer. 2. To fine tune the flow coefficient use the following formula: new flow coefficient = (actual volume/controller volume) x old flow coefficient The actual volume is the actual value obtained from the balancer’s measurements. The controller volume is the value obtained from AIR VOLUME. 3.
Setting Flow Sensor Factors Setting Flow Sensor Factors The BACnet ATEC models 2301 and 0001 use mass airflow sensors to measure duct differential pressure. A differential pressure calibrated sensor is used over mass flow to make the sensor compatible with previous controller designs. Since the flow measurement is done based on the mass of the air, the BACnet ATEC has several new parameters that can/should be adjusted to help reduce airflow measurement errors.
Setting Airflow Setpoints Setting Airflow Setpoints NOTE: Maximum flow(s) must be set ≥ minimum flow(s). 1. Set CLG FLOW MIN to the desired minimum cooling airflow setpoint. 2. Set CLG FLOW MAX to the desired maximum cooling airflow setpoint. Application 2861 through 2867 3. Set HTG FLOW MIN to the desired minimum heating airflow setpoint. 4. Set HTG FLOW MAX to the desired maximum heating airflow setpoint. 5.
Setting Room Temperature Offset (optional) Setting Room Temperature Offset (optional) When the room has stabilized, take a precision temperature reading over a period of time at the room temperature sensor, record any difference between this reading and the value of ROOM TEMP and set this difference value (to the nearest 0.25°F (0.14°C)) into RMTMP OFFSET. Example If the actual room temperature is 72.0°F (22.2°C), and the value of ROOM TEMP is 73.0°F (23.
Configuring BACnet Parameters NOTE: WCIS version 3.0 or later must be used to configure Siemens Building Technologies BACnet MS/TP Equipment Controllers. Do not check the Metric checkbox in the Device Properties dialogue box if the controller is communicating through the MS/TP driver in the field panel. Metric can be checked only if the controller is communicating through a router.
