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CNT-SVX08F-EN
Sequence of Operations/SCC Mode
Figure 8.
Make-and-break limits in 2-stage mode
Inactive
Active
O
u
t
p
u
t
S
t
a
t
e
Actuator Command (Percent)
Stage 1
Inactive
Active
Stage 2
Limit 1
Break
5%
Make
Limit 1
30%
Break
Limit 2
45%
Make
Limit 2
70%
Fan Operation
The fan is configurable for continuous or cycling operation for both heating and cooling mode. If
configured for continuous operation, the fan runs continuously during the occupied, occupied
standby, and occupied bypass modes. If configured for cycling operation, the fan cycles if the
temperature is away from setpoint during the occupied, occupied standby, and occupied bypass
modes. During the unoccupied mode, the fan cycles regardless of the fan configuration.
Fan Off Delay
After the actuator output has been controlled to its disabled position, the MP501 automatically
keeps the fan energized for an additional time (configurable). The purpose of this feature is to
remove residual heating or cooling from the source.
Peer-to-peer Data Sharing
The MP501 has the ability to share data with other LonTalk-based controllers. Several controllers
can be bound as peers, using the Rover service tool, to share data such as:
•
Setpoint
•
Zone temperature
•
Heating/cooling mode
Shared data is communicated from one controller to others. Applications having more than one
unit serving the same zone can benefit by using this feature. For example, peer-to-peer data sharing
allows multiple controllers to share a single zone temperature sensor and prevents multiple units
from simultaneously heating and cooling.
