LX Series Unit Ventilator Controller User's Guide
87
Communication Failure
This message results from a heartbeat failure on a network variable input that sets
the comm_failure bit of nvoStatus. See Table 11.
Electrical Fault
This message indicates that a local hardware sensor is disconnected. The
disconnect condition sets the electrical_fault bit of nvoStatus. See Table 12 for a
list of the possible disconnected sensors.
Out of Limits
This message indicates that a monitored point has exceeded limits set by the
operator who configured the device. The out-of-limits sets the out_of_limits bit of
nvoStatus. See Table 14.
Disabled
Active if you have disabled the device by pressing the Disable button.
In Alarm
Active if a communications failure or electrical fault has occurred or if any of the
conditions in the Alarm Configuration window have been met.
In Override
Active if you have placed the device into override by pressing the Override button.
Out of Service
Active when the UV controller cannot control the temperature in the zone of
control because it is not receiving a space temperature, or there is no slave input
(nviSlave).
Network Variables
The following text describes some of the most commonly used network variables
found in the Unit Ventilator Controller.
13
RQ_MANUAL_CTRL
Enable object for manual control.
14
RQ_REMOTE_CTRL
Enable object for remote control.
15
RQ_PROGRAM
Enable programming of special configuration
properties.
16
RQ_CLEAR_REST
Clears the bit that indicates that the object has
been previously reset.
17
RQ_RESET
Resets the object.
1.
Not all commands are available in the Unit Ventilator Controller.
Table 27: Values for SNVT_obj_request
1
Value
Identifier
Meaning
