Orion-system PT-Link II LON Manual de usuario descargar pdf (Pagina 54)

PT-Link II LON

®

Technical Guide

PT-Link II Interface

54

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

Return

Damper

Position

RaDmp Analog

Output

Current position of

the return damper

signal.

Outdoor Air

Dewpoint

OaDwpt Analog

Output

Current

calculated outdoor

air dewpoint added

on version 1.09.

Current

Supply Air

Setpoint

SaTpStM Analog

Output

Current SAT

Cooling or Heating

setpoint if there

is no reset source;

Current calculated

SAT setpoint with

Reset Source.

Coil

Temperature

CoilTp Analog

Output

Current coil

temperature

reading added on

version 1.09.

Preheater

Setpoint

PreHtSp Analog

Input

Low Outside Air

Ambient Protection

Setpoint

0 100

CO

2

Setpoint

CO2St Analog

Input

When the CO

2

level rises above

the CO

2

Protection

Limit Max Level,

the Economizer’s

Minimum Position

will begin to reset

open proportionally

between the CO

2

Protection Limit

Max Level Set-

point and the Reset

Range Setpoint.

0 3000

Static

Pressure

Setpoint

DuctPrSt Analog

Input

This is the target

duct pressure to be

maintained by the

VFD blower signal.

0.01 3

Minimum

Outside Air

Setpoint

MinEcoSt Analog

Input

This is the

minimum position

of the economizer

in the occupied

modes.

1 100

Occupied/

Mode

Enable

Cooling

Setpoint

OcpClSt Analog

Input

If the control

temperature rises

one degree above

this setpoint,

the control will

activate the cooling

demand. If the

control temperature

is the Supply Air

Sensor, then the

cooling demand is

always active.

099

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

Occupied/

Mode

Enable

Heating

Setpoint

OcpHtSt Analog

Input

If the control tem-

perature drops one

degree below

this setpoint,

the control will

activate the heating

demand. If the

control temperature

is the Supply Air

Sensor, then there is

no heating demand.

099

Outdoor

Air Sensor

Offset

OaTpOst Analog

Input

If the Outdoor

Temperature Sensor

is reading incor-

rectly, you can use

this option to

enter an offset

temperature to adjust

the Sensor’s Tem-

perature.

-100 100

Relief

Pressure

Setpoint

RfPrSt Analog

Input

This is the target

building pressure to

be maintained by the

VFD Relief signal.

-0.2 0.2

Return

Air Sensor

Offset

RaTpOst Analog

Input

If the Return Tem-

perature Sensor is

reading incorrectly,

you can use this

option to enter an

offset temperature to

adjust the Sensor’s

Temperature.

-100 100

Schedule

Force

SchdFrc Analog

Input

0 = Auto

Unoccupied Mode

1 = Forced On

2 = Forced Off

02

Space

Sensor

Offset

SpcTpOst Analog

Input

If the Space

Temperature

Sensor is reading

incorrectly, you can

use this option to

enter an offset

temperature to

adjust the Sensor’s

Temperature.

-100 100

SAT/Reset

Source

Cooling

Setpoint

SaClSt Analog

Input

Supply Air setpoint

or Reset Source

target temperature in

Cooling Mode.

40 80

SAT/Reset

Source

Heating

Setpoint

SaHtSt Analog

Input

Supply Air setpoint

or Reset Source

target temperature in

Heating Mode.

40 200

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