Local S7999B Configuration; Local S7999B Configuration (Com 1 Not Used) - Honeywell S7999B Manual

Local S7999B Configuration

The S7999B can be configured to manage a single burner/
boiler system only. In this configuration a single S7810M
device is included in the wiring along with zero or more UDC
controllers that perform one of the burner control applications.
Multiple UDC controllers can be connected in this network.
Typical configuration results in only a single instance of each
UDC application type installed on the network, but the system
isn't restricted to just one instance. Multiple UDC controllers
for any application type can be included.
LEVEL CONTROL
In this configuration, the R7999 may be connected to the ControlBus, and its status is visible from the S7810M. Only one
S7810M is connected, but multiple UDCs can be connected in this configuration. Fig. 7 shows the wiring for this configuration.
UDC2500
SLAVE
THERMAL
SHOCK
SLAVE
UDC2500
SLAVE
STEAM/FUEL
FLOW
SLAVE
UDC2500
SLAVE
FEED PUMP
SLAVE
LOCAL
MODBUS
1
MASTER
COM 2
S7999B
SYSTEM DISPLAY
1 MODBUS BAUD RATE MUST BE SET FOR 19200.
Fig. 6. Local S7999B configuration (COM 1 not used).
Three variations of this configuration based on COM 1 port
usage are possible:
• ControLinks™ R7999 commissioning
• Subsystem of System Modbus™ network
• No additional connection
Fig. 6 depicts the configuration when COM 1 isn't used for any
other connection, i.e., the S7999B manages exclusively just
the burner/boiler system connected to the COM 2 port.
UDC2500
PID LOAD
CONTROL
UDC2500
STACK
TEMPERATURE
RM78xx
S7810M BURNER
MODBUS CONTROL ANNUNCIATOR
R7999
FUEL AIR
RATIO CONTROL
COM 1
9
S7999B SYSTEM DISPLAY
S7830
EXPANDED
CONTROLBUS
M24225
65-0283—2