17614_ins_wireless_900_rcvr
Installation and Operating Instructions
Wireless 900 MHz Receiver
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com
Specifications subject to change without notice.
rev. 04/21/15
4 of 5
1. The wireless receiver and Analog Output Modules are interconnected and require module power along the “Power
Bus” terminals. The bus can be powered from either the receiver end on the left or the last output module on the right
side. Be sure you have enough DC current or AC VA for all the devices on the bus.
2. The Current Output Module (BA/COM) signal is LOOP POWERED and must be externally powered with
9-36 VDC separate from the Power Bus. The Loop Power must be connected to Current Output Module before
it can be trained.
3. Be sure to follow the polarity (+ or –) symbols listed on each receiver and the output modules to maintain
communication and Power Bus integrity.
Termination
Fig. 9
:
Wireless
Receiver
and Output
Module
System
Wiring
4 to 20mA Current Loop
Signal to the Controller
900 MHz Receiver
RS-485 Bus
To Other Analog
Output Modules
Current Output Module
Requires loop power
before it can be trained.
Current Loop
Power Supply
9 to 36VDC
0 to 5VDC or
0 to 10VDC
Analog Signal
The Resistive
Temperature Signal is
Polarity Sensitive to the
Controller and Must
Have Less than a 5VDC
Bias Voltage
System Power Supply
9 to 15VDC
Power for the Power Bus can be supplied
to the receiver or to the Analog Output
Module on the far right of the string of
modules, but not to both places.
Resistance
Output Module
Voltage
Output Module
Extending the RS485 Network between the Receiver and the Analog Output Modules
The Analog Output Modules may be mounted up to 4,000 feet away from the receiver. The total length of all the shielded,
twisted pair cables shown in Fig. 9 is 4,000 feet (1,220 meters). Connect the terminals together as shown in Fig. 9. If the
distance from the receiver to the group of Analog Output Modules is greater than 100 feet (30 meters), provide a separate
power supply for that group of Analog Output Modules. BAPI’s VC350A EZ Voltage Converter and a small transformer
can be used to power
the group of Analog
Output Modules.
Fig. 10:
Extended RS485 Network between the 900 MHz Receiver and the Analog Output Modules
BAPI
VC350A
EZ Voltage
Converter
Transformer
Receiver
RS485 Wiring
RS485 Wiring
Analog Output Modules
Analog Output Modules
BAPI
VC350A
EZ Voltage
Converter
Transformer
BAPI
VC350A
EZ Voltage
Converter
Transformer
Note:
This configuration
requires one or more
Pluggable Terminal
Block Kits for the extra
wire terminations on the
left and right side of the
Analog Output Modules.
Each kit includes 4 con-
nectors.
Pluggable Terminal Block
Kit (BA/AOM-CONN)
