Orion-system PT-Link II LON Manual de usuario descargar pdf (Pagina 55)

PT-Link II Interface

PT-Link II LON

®

Technical Guide

55

Appendix G - VCM LON Parameters

SNVTs for the VCM Controller

Binary Output SNVTs are SNVT_lev_disc

All other SNVTs are SNVT_count_inc_f

Parameter Name Object Description Limits

Supply

Air Sensor

Offset

SaTpOst Analog

Input

If the Supply Air

Temperature

Sensor is reading

incorrectly, you can

use this option to

enter an offset

temperature to

adjust the Sensor’s

Temperature.

-100 100

Unoccupied

Cooling

Offset

UnClOst Analog

Input

During the

Unoccupied Mode

of Operation, this

Setpoint spreads

the Occupied

Cooling Setpoint

out by a user

adjustable amount.

If you do not want

Cooling to operate

during the

Unoccupied Mode,

use the default

setting of 30°F for

these setpoints.

030

Unoccupied

Heating

Offset

UnHtOst Analog

Input

During the

Unoccupied Mode

of Operation, this

Setpoint spreads

the Occupied

Heating Setpoint

out by a user

adjustable amount.

If you do not want

Heating to operate

during the

Unoccupied Mode,

use the default

setting of 30°F for

these setpoints.

030

Dewpoint

Setpoint

DptSt Analog

Input

If the outdoor

dewpoint rises

above this setpoint,

the unit will

activate the

Dehumidiﬁ cation

Demand.

35 80

SNVTs for the VCM Controller

Binary Output SNVTs are SNVT_lev_disc

All other SNVTs are SNVT_count_inc_f

Parameter Name Object Description Limits

Indoor

Humidity

Setpoint

InRhSt Analog

Input

If the indoor

humidity rises

above this setpoint,

the unit will

activate the

Dehumidiﬁ cation

Demand.

0 100

Warm Up

Setpoint

WmupSt Analog

Input

In a VAV

application, upon

entering the

occupied mode, the

Warm-up Demand

will be activated

if the return air

temperature falls

one degree below

this setpoint.

50 90

Wet Bulb

Setpoint

WtblSt Analog

Input

The economizer is

enabled if the out-

door temperature

or wetbulb falls

below this setpoint.

080

Bad Supply

Air Sensor

SaTpAlm Binary

Output

Alarm that

indicates a failure

in the supply air

sensor.

CO

2

Sensor

Installed

CO2Cfg Binary

Output

Status that

indicates the CO

2

function has been

conﬁ gured.

Cooling

Demand

ClDmnd Binary

Output

Status that

indicates a demand

for cooling.

Cooling

Enabled

ClEnbl Binary

Output

Status that indicates

mechanical cooling

is enabled.

Economizer

Enabled

EcoEnbl Binary

Output

Status that indicates

the economizer is

enabled.

Fan Start

Up Delay

FanDly Binary

Output

Status that indicates

the fan is

commanded to run,

but it is in the start

up delay mode.

Fan

Proving

Alarm

PofAlm Binary

Output

Alarm that

indicates a failure

in the ﬂ ow of the

VFD blower.

Heating

Demand

HtDmnd Binary

Output

Status that indicates

a demand for

heating.

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