LX Series Unit Ventilator Controller User's Guide 89
nviEmergCmd
Use this network variable input to command the UVC into different emergency
modes. It is typically set by a supervisory node. See Table 29.
Type: SNVT_hvac_emerg (103)
nviExtCmdOutputx
These are numbered following the output number. For example,
nvoExtCmdOutput1, nvoExtCmdOutput2,.... These network variable inputs
receive the output signal, whether state and percentage to control any output that is
unassigned and configured through the actuator configuration wizard.
Type: SNVT_switch (95)
nviFanSpeedCmd
This network variable input receives the fan speed demand. It receives a value
between 0–100% and a state 0–1. If, for example, you have 3 fan speeds, fan speed
1 starts over 33%, fan speed 2 starts over 66% and fan speed 3 starts over 100%.
To start, the field state must be ON (1).
Type: SNVT_switch (95)
nviFanState
This network variable input receives the fan state. When state and value are not set
to zero, the fan state is considered ON. When state or value is set to zero, the fan
state is considered OFF.
Type: SNVT_switch (95)
Table 29: nviEmergCmd
Value Identifier Actions
0 EMERG_NORMAL Normal operation.
1
EMERG_PRESSURIZE
1
1. Not supported in the Unit Ventilator Controller.
The damper moves to the fully open position.
2
EMERG_DEPRESSURIZE
1
The damper moves to the fully closed position.
3 EMERG_PURGE The damper moves to the fully open position.
Fan, heating, and cooling are turned OFF.
4 EMERG_SHUTDOWN Fan, heating, and cooling are turned OFF.
5
EMERG_FIRE
1
---
0xFF EMERG_NUL Value not available.
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