Related Manuals for Keystone BFC Series
Summary of Contents for Keystone BFC Series
- Page 1 BACnet Flow Controller for Fan Filter Units BFC Series INSTALLATION + SERVICE MANUAL v001 – Issue Date: 08/30/22 © 2022 Keystone Clean Air Solutions. All rights reserved.
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Page 2: Table Of Contents
Product Overview Networking & Setup General Information ............1 BACnet Wiring ..............12 Termination ................12 Installation & Mounting Instructions Electrical Noise ..............12 Typical Wiring ...............2 Network Wire Specifications ...........13 Input/Output Description ........... 2 BACnet Service Menu ............14 Display Navigation BACnet Networking and Setup ........15 Initial Startup ................3 Setting the Device Instance (Coupled MAC and DI) ...16 Main Menu ................4... -
Page 3: General Information
General Information The BACnet Flow Controller (BFC) is a DDC fan controller designed specifically for controlling flow through Krown Fan Filter Units with EC motor technology. The BFC controls an EC motor through a local setpoint which is adjustable using a push button interface on the BFC, by an analog BAS input voltage, or over BACnet. -
Page 4: Typical Wiring
Typical Wiring Input/Output Description Analog Outputs Configurable for Unit Pressure, CFM (Air Flow), RPM (Mo- tor Speed), Filter Load , BAS, *LED Dimming, *LED On/ Off (*for Krown-L w/ BACnet Dimming Control) Configurable for Unit Pressure, CFM (Air Flow), RPM (Mo- tor Speed), Filter Load , BAS, *LED Dimming, *LED On/ Off (*for Krown-L w/ BACnet Dimming Control) Configurable for Unit Pressure, CFM (Air Flow), RPM (Mo-... -
Page 5: Initial Startup
Initial Startup When the BFC controller is powered up with 24VAC it will display the following information. KEYSTONE Start–up screen ELECTRONICS Displays firmware version VERSION CURR Displays the current static pressure in in. w.g. PRESSURE Displays ECM setpoint in % motor speed... -
Page 6: Main Menu
Main Menu From the Home Screen press the Menu button to enter this menu. Use Up and Down arrow buttons to navigate through. Read Only - Displays % of filter loading based on new, clean filter pressure drop FILTER LOAD Read Only - Displays the current RPM of the motor ECM SPEED Displays local ECM Setpoint. -
Page 7: Service Menu
Service Menu Hold down Menu button for 5 seconds, display will show ‘Passcode’. Use Up and Down arrow buttons to enter this sequence: Down, Up, Up, Down. Allows you to see or adjust: Current CFM CFM Offset CFM Tweak ECM Setback SERVICE MENU Fan Type Unit Size ie. -
Page 8: Service Menu - Fan
Service Menu – Fan Press Menu button to enter this menu. Use Up and Down arrow buttons to navigate through. CURRENT CFM Read Only XXXX CFM Supply, Exhaust UNIT STYLE NOTE: Must match actual configuration of Krown Fan Filter Unit Displays the ECM motor calibration for Krown Fan Filter Unit nominal size (2x2) UNIT SIZE Selectable sizes are: 2’... -
Page 9: Service Menu - Filter
Service Menu – Filter Press Menu button to enter this menu. Use Up and Down arrow buttons to navigate through. Adjust filter type, BTR, RSR. FILTER TYPE BTR = Bench Top Removable RSR = Room Side Removable FILTER LOAD Read Only - Displays % of filter loading based on new, clean filter pressure drop XX % This read only value represents the ratio between clean and loaded filter pressure. -
Page 10: Service Menu - I/O
Service Menu – I/O Press Menu button to enter this menu. Use Up and Down arrow buttons to navigate through. BAS (AI1) Read Only – Displays current input BAS voltage for motor speed control 0 VDC AI2 (BAS LED) Read Only – Displays input voltage to Analog Input 2 for LED control (UFFU w/ BACnet Dimming Control only) 0 VDC Displays current state of binary contacts used for night setback / secondary ECM setpoint (open / closed) CONTACT CLOSURE... -
Page 11: Service Menu - Bacnet
9600 baud (all BACnet devices must at least support this speed) – slowest BAUD RATE 76800 19200 baud 38400 baud 76800 baud (default baud rate for Keystone products) - fastest RS-485 TERM, Enable and disable RS-485 termination on MS/TP segment. DISABLED RESTORE BACNET Reset MAC Address, Device Instance, and BAUD rate to default values. -
Page 12: Filter Calibration
Filter Calibration To properly track filter loading, the BFC must be calibrated with the clean filter pressure. Before proceeding, ensure the unit is operating at the desired airflow. Any changes to the airflow will change the unit pressure and therefore require the filter status to be reset. - Page 13 Via BACnet The steps below require the BFC to be configured and set up on a BACnet front-end system. For further information on BFC BACnet setup, see Networking & Setup section. Step 1: Ensure that BACnet point AV2 – Filter Runtime is being pulled in (see table below). Step 2: Write a value of 0 to AV2 –...
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Page 14: Bacnet Wiring
BACnet Service Menu section of this manual. Tech Tip: The BACnet MS/TP to IP Router supplied by Keystone has built in termination and it is enabled by default (since the router is typically the beginning of the entire MS/TP network). Now you only have to go and find/ terminate that last device. -
Page 15: Network Wire Specifications
Use Keystone supplied CAT-5 cables for BACnet Wiring whenever possible. If not possible to use Keystone supplied cables, follow these wire specifications. Network Wire Specifications PIN 1 For the BACnet MS/TP network specific wire is required. PIN 2 Do not use standard power or “thermostat” wire. This... -
Page 16: Bacnet Service Menu
EVERY device on the network must run at the same 76800 speed. Keystone controllers are defaulted to a baud rate of 76800, but can be changed to 38400, 19200, or 9600. For a network segment with all Keystone controllers, it’s recommended that the baud rate be left at 76800. -
Page 17: Bacnet Networking And Setup
BACnet Networking and Setup Setting the MAC Address: MAC (media access control) must be UNIQUE on an MS/TP network segment within building. An installer setting up an MS/ TP segment must ensure each device has a UNIQUE MAC Address (Range 1-99). The MAC Address is set through the LCD thermostat or LCD setup tool. -
Page 18: Setting The Device Instance (Coupled Mac And Di)
Setting the Device Instance (Coupled MAC and DI) Device Instance: A Device Instance number identifies a device within an entire building, therefore giving it a unique number or Address, much like a telephone ext. number. A building can have one telephone number, but all the extensions have a unique number to identify them. -
Page 19: Setting The Device Instance (De-Coupled Mac And Di)
Setting the Device Instance (De-coupled MAC and DI) Device Instance: A Device Instance number identifies a device within an entire building, therefore giving it a unique number or Address, much like a telephone ext. number. A building can have one telephone number, but all the extensions have a unique number to identify them. -
Page 20: Network Layout
Network Layout The BFC can be connected over BACnet MS/TP and added to an existing BAS front end system. Keystone also offers its own mini front-end system known as Krown-CS which acts as a graphics package. The Keystone WEB Server allows the user to view variables such as filter status, CFM, etc. - Page 21 Switches Router BACNET WIRING NETCOM Assumes two ports on IP router are filled with BACnet routers (i.e. 60 Krown Fan Filter Units' total). More units are supported, contact Keystone applications team for more information. v001 For more information visit KeystoneCleanAir.com...
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Page 22: Location
Location The Front-End components should be mounted in an accessible location close to a network connection. Keystone suggests mounting these components in the network or server room. The WEB-SERVER, IP-RTR, BAC-RTR, and IP-SWITCH (if applicable) should all be mounted together. -
Page 23: Mounting
DIN Rail Mounting Back view of WEB-SERVER Use the included DIN rail to securely mount the Front-End components. A. Using 3 screws (by others) mount the DIN rail horizontally to a secure, accessible surface. B. Hang the WEB-SERVER onto the DIN rail using the TOP white clips. -
Page 24: Bas Input Signal
BAS Input Signal The BAS input signal overrides the local setpoint using a remote 0 – 10VDC signal. If the BAS signal drops below 1VDC local control (via the push buttons) is restored. BAS Voltage Response Notes 0-1 VDC Local control mode using push buttons Local setpoint can be adjusted from 0 –... -
Page 25: Analog Rpm Feedback
Analog RPM Feedback A two wire connection supplies an analog (0-10 VDC) signal that is directly proportional to the MOTOR 1 RPM. The range is 0 – 2500 RPM and it will output a proportional 0 – 10 VDC signal. If a dual blower system is used, only the RPM of motor 1 can be read. -
Page 26: Wiring And Cables
Wiring and Cables The ECM speed controller requires 24 VAC power from a transformer and outputs control signals to the ECM motor on dual MTA-100 jacks. Either jack or both jacks can be used (for dual fan systems). The control cable (with RED connector) must be plugged into the circuit board correctly. (See Figure 2) Figure 2 - ECM Standard Speed Controller With Control Cable Plugged Into MTR1 MTR1 JACK ECM CONTROL CABLE... -
Page 27: Troubleshooting
Keep this consistency throughout the network. Option #2 Keystone does not use EOL or termination on their devices. Terminating a device is almost never required at the low baud rate of MS/TP devices. In fact terminating can create more problems than it solves. -
Page 28: Specifications
Specifications Power: Pluggable 24 VAC, 50/60 Hz, 50 VA Class 2 Input Power: 24 VAC, 50/60 Hz, 5 VA (plus external loads), Class 2 Environmental (operating): 10°C to 50°C (50°F to 122°F), 0% to 95% RH (non-condensing) Environmental (storage): -30°C to 50°C (50°F to 122°F), 0% to 95% RH (non-condensing) 1 Thermistor Input (10K Ohm, Type J) Inputs: 2 Analog Inputs: 0-10 VDC... -
Page 29: Bacnet Points List For Bfc Firmware V3.1.0
BACnet points list for BFC firmware v3.2.0 RETAINED Object Name Units Default Range Description ON POWER FAILURE Analog Input 1 (BAS) Volts DC Dynamic Dynamic 0-10 VDC Signal for remote fan speed control 0-10 VDC Signal for remote LED dimming (Only for Analog Input 2 (LED) Volts DC Dynamic... - Page 30 BACnet points list for BFC firmware v3.2.0 RETAINED Object Name Units Default Range Description ON POWER FAILURE ECM Setback Set- Set the secondary ECM motor setpoint activated 0-100% point by closure of the Binary Contact (BI1) (-9999)- ECM CFM Offset Set a fixed offset for adjusting CFM readout 9999 AV10...
- Page 31 This document contains the most current product information as of this printing. For the most up-to-date product information, please go to KeystoneCleanAir.com © 2022 Keystone Clean Air Solutions. All rights reserved.