BAPI BAPI-Stat 4MB Modbus Catalog Page
BAPI-Stat 4MB Modbus Temp or Temp/Humidity Sensor
Product Identication and Overview
The BAPI-Stat 4MB Modbus room temperature or temperature/
humidity sensor is available with optional large-format LCD,
pushbutton setpoint, override and fan speed adjustments.
The available (and enabled) process variables are available via
standard RS485 network using an industry standard Modbus
RTU protocol.
Communications parameters and user limits are set up through
an included Page parameter adjustment system.
BAPI-Stat 4MB Modbus
unit with Display,
Setpoint and Override.
Note: Unit is also available
without display and buttons.
Installation & Operating Instructions
rev. 02/02/1834350_ins_BS4_modbus
Fig. 1:
Mounting
JUNCTION BOX
1. Pull the wire through the wall and out of the junction box, leaving
about 6 inches free. Pull the wire through the hole in the base
plate.
2. Secure the base to the box using the #6-32 x 1/2 inch mounting
screws provided.
3. Terminate the unit according to the guidelines in the Termination
section.
4. Attach Cover by latching it to the top of the base, rotating the
cover down and snapping it into place.
5. Secure the cover by backing out the lock-down screws using a
1/16” Allen wrench until they are ush with the bottom of the cover.
DRYWALL MOUNTING
1. Place the base plate against the wall where you want to mount the
sensor. Mark the two mounting holes and the area where the wires
will come through the wall.
2. Drill two 3/16” holes in the center of each marked mounting hole.
Insert a drywall anchor into each hole.
3. Drill one 1/2” hole in the middle of the marked wiring area.
4. Pull the wire through the wall and out the 1/2” hole, leaving about
Fig. 2: Mounting hardware is provided for
both junction box and drywall installation
(junction box installation shown).
6 inches free. Pull the wire through the hole in the base plate.
5. Secure the base to the drywall anchors using the #6 x 1 inch mounting screws provided.
6. Terminate the unit according to the guidelines in the Termination section.
7. Attach Cover by latching it to the top of the base, rotating the cover down and snapping it into place.
8. Secure the cover by backing out the lock-down screws using a 1/16” Allen wrench until they are ush with the
bottom of the cover.
NOTE: In a wall-mount application, the mixing of room air and air from within the wall cavity can lead to erroneous
readings, condensation, and premature failure of the sensor. To prevent this condition, plug the conduit hole with
insulation in the junction box.
Specications subject to change without notice.
1 of 7
BAPI-Stat 4MB Modbus Temp or Temp/Humidity Sensor
Installation & Operating Instructions
rev. 02/02/1834350_ins_BS4_modbus
Termination
BAPI recommends using twisted pair of at least 22AWG and sealant lled connectors for all wire connections. Larger
gauge wire may be required for long runs. All wiring must comply with the National Electric Code (NEC) and local
codes. Do NOT run this device’s wiring in the same conduit as AC power wiring. BAPI’s tests show that uctuating and
inaccurate signal levels are possible when AC power wiring is present in the same conduit as the signal lines. If you are
experiencing any of these difculties, please contact your BAPI representative.
BAPI recommends wiring the product with power disconnected. Proper supply voltage, polarity and wiring
connections are important to a successful installation. Not observing these recommendations may damage the
product and void the warranty.
Status LED
Green - Indicates that the unit is operating propertly.
Red - Indicates that there is a problem with the unit.
Fig. 3:
BAPI-Stat 4MB Modbus
Sensor Circuit Board
Terminal Description
GND ............Power Supply Ground
(Common to the controller)
Net B...........RS485 network connection (Data -)
Net A ...........RS485 network connection (Data +)
Power .........Power Supply Hot
(See specications on page 5 for full
voltage details.)
Network LED
Flashing Red Slowly - Indicates that there has been no
communications for 60 seconds.
Flashing Green Slowly - Indicated that there have been
normal communications within the last 60 seconds.
Flashing Green Slowly with Quick Red Flashes - The
quick red ashes indicate active communications.
Specications subject to change without notice.
2 of 7
BAPI-Stat 4MB Modbus Temp or Temp/Humidity Sensor
Front Panel & Control Descriptions
The BAPI-Stat 4MB is available without display and
without buttons, or with display and with four buttons Setpoint Up/Down, Scroll and Override. Fig. 4 shows
a fully featured unit. Individual LCD icons can be
controlled via specic Modbus Registers.
Scroll Button Function and Flow
The default display shows current process value
or a rotation of process values based on the Page 6
menu value. Use the Scroll button to index through
the enabled sensor parameters. (See the Register
Map on the last page for a list of allowable display
parameters.) Parameters with the “SETPOINT” icon
displayed are editable. Use the Up/Down buttons to
change them, and use the Scroll button to view the
next parameter or return to the normal display mode.
When in the Pages mode, the Scroll button becomes
the Enter button for entering a page and accepting
changes within a page.
Fan Speed
Indicator
Occupied or
Unoccupied Icon
Heat Mode
Cool Mode
Automatic
Fan Mode
Scroll Button
Override Button
Fig. 4: BAPI-Stat 4MB Modbus Unit with
Override, Setpoint and Scroll Buttons
Installation & Operating Instructions
rev. 02/02/1834350_ins_BS4_modbus
“SETPOINT” Icon
Engineering Units
Temperature Display
Fan Mode On
Fan Mode Off
Setpoint Up/Down
Buttons
BAPI-Man Icon
The BAPI-Man Icon can be used to show the zone status (see Fig. 5). The rst Modbus
write to Register 40, bit 0 (set to true) after power up will latch the BAPI-Man outline
on. Future writes or button presses will only affect the interior of the BAPI-Man. Cycling
power will reset the outline.
Up/Down Buttons
Interior On
Fig. 5: BAPI-Man Icon
Outline
The Up/Down buttons are used to adjust editable parameters whether in the Page
or Parameter/Setpoint modes.
Fan Speed
Override Button:
Low
If the Override feature is enabled then the BAPI-Man outline will be latched on and
any Override button push will do the following. An Override button press will toggle both
Fan Speed
Medium
the inner portion of the BAPI-Man icon (Fig. 5) for 10 seconds and Register 20, bit 0. This
bit and the icon are toggled again after 10 seconds. A Modbus write to Register 40, bit 0
can conrm the Override status and keep the BAPI-Man icon turned on (true) or off (false).
If the Override feature is not enabled, setting Register 40, bit 0 to true will turn on the
BAPI-Man icon, inner and outer. Setting the bit to false will clear the icon, inner and outer.
Fig. 6: Fan Speed
Fan Speed
High
Indicator
Dip Switch Options (see Fig. 7 on next page)
• Switches 1 through 5 - Sets the binary Address for the device. Units are shipped with the Address set to 1. An
Address of 0 is invalid. Additional Addresses are available using the Page 1 Menu (see pg 4).
• Switch 6 (TOOL) - Sets the unit in a Listen-Only Mode when set to On and returns the unit to Normal Operation
when set to Off. The Firmware Version and Address are displayed (on LCD units) for a short period after the
switch is set to Off.
• Switch 7 (PROG) - Sets the unit in Program Mode to access the PAGE Menus.
• Switch 8 (F/C) - Sets the display reading and the output temperature values to °F or °C.
Status and Network LEDs (see Fig. 3 on pg 2)
• Status LED - Green indicates that the unit is operating propertly. Red indicates that there is a problem with the unit.
• Network LED - Flashing Red Slowly indicates that there has been no communications for 60 seconds. Flashing Green
Slowly indicated that there have been normal communications within the last 60 seconds. Flashing Green Slowly with
Quick Red Flashes indicates active communications.
Specications subject to change without notice.
3 of 7
Loading...