Johnson Controls VMA1615 Installation Instructions

Note: Metasys field controllers ship with Switch 128 ON
and the remaining address switches OFF. This
renders the controllers wired slave devices, which
do not interfere on MSTP Buses and do not
interfere with bus operation. Set a valid and
unique device address on the controller before
applying power to the controller on the bus.
To set the device addresses on a Metasys field controller:
1. Set all of the switches on the field controller’s device
address DIP switch block (128 through 1) to OFF.
2. Set one or more of the seven address switches (64
through 1) to ON, so that the sum of the switch
numbers set to ON equals the intended device
address. See Table 6 and Table 7 for valid field
controller addresses.
Set the highest number switch that is less than or
equal to the intended device address to ON. Then
continue setting lower numbered switches until the
total equals the intended address. For example, if the
intended device address is 21, set Switch 16 to ON
first, then set Switch 4 ON, followed by Switch 1
(16+4+1=21). See Figure 9.
3. Set Switch 128 to ON only for controllers on a ZFR
/ZFR Pro Series Wireless Field Bus application. For
all hard-wired SA and FC Bus applications, ensure
that Switch 128 is set to OFF.
Note: Do not connect a wirelessly enabled field
controller to a wired FC Bus.
Refer to the WNC1800/ZFR182x Pro Series Wireless
Field Bus System Technical Bulletin (LIT-12012356)
or the ZFR1800 Series Wireless Field Bus System
Technical Bulletin (LIT-12011295) for more
information on device addresses in wireless
applications.
4. Set a unique and sequential device address for each
of the field controllers connected on the SA or FC
Bus, starting with device address 4.
To ensure the best bus performance, set sequential
device addresses with no gaps in the device address
range (4, 5, 6, 7, 8, 9, and so on). The field controllers
do not need to be physically connected on the bus in
their numerical device address order.
5. Write each field controller’s device address on the
white label below the DIP switch block on the
controller’s cover.
Refer to the MSTP Communications Bus Technical
Bulletin (LIT-12011034) for more information on field
controller device addresses and how to set them on
MSTP Buses.
Table 6 and Table 7 show and describe the valid FC Bus
and SA Bus device addresses for Johnson Controls
MSTP communications bus applications.
Table 6: FC Bus Device Address Descriptions
Address DescriptionDevice
Address
Reserved for FC Bus Supervisory Controller
(not valid for field controllers).
0
(Switch 128
OFF)
Reserved for peripheral devices (not valid for
field controllers).
1 to 3
(Switch 128
OFF)
Valid for MSTP Master field controllers on a
hard-wired SA Bus or FC Bus.
4 to 127
(Switch 128
OFF)
Table 7: Wireless Field Bus Device Address
Address DescriptionDevice
Address
Reserved addresses for wired slave devices
(not valid for field controllers).
0 to 3
(Switch 128
ON)
Note: Metasyscontrollers ship with 128 ON
and the remaining address switches
OFF, rendering the controllers wired
slave devices, which do not operate
on Metasys field buses.
Valid for MSTP Master field controllers on
wireless FC Buses only.
4 to 127
(Switch 128
ON)
Note: Do not connect a Metasys controller
with these device addresses to an
active wired SA or FC Bus. When a
controller with one of these device
address is connected to a wired field
bus, the field bus is rendered
inoperable until the controller is
disconnected or Switch 128 is set to
OFF.
Setting the N2 Controller Address to
be Greater than 127
N2-configured controllers support the full range of
possible N2 device addresses provided by the N2 protocol
standard (1-255). However, these controllers require
special configuration for addresses above 127.
Use the following instructions for controller addresses
greater than 127.
16VMA1615/1626/1628/1630 VAV Controllers Installation Instructions

Johnson Controls VMA1615 Specifications

General

Brand	Johnson Controls
Model	VMA1615
Category	Controller
Language	English