Orion-system PT-Link II LON Manual de usuario descargar pdf (Pagina 42)

PT-Link II LON

®

Technical Guide

PT-Link II Interface

42

SNVTs for the VCM-X WSHP (Coil)

Binary Output SNVTs are SNVT_lev_disc

all other SNVTs are SNVT_count_inc_f

Parameter Name Object Description Limits

Modulating

Compressor 2

MdCmp2 Analog

Output

Current position

of the

2nd Stage of Com-

pressor Modula-

tion.

Head Pres-

sure 1

HdPr1 Analog

Output

Head Pressure for

1st Compressor

Head Pres-

sure 2

HdPr2 Analog

Output

Head Pressure for

2nd Compressor

Condenser

Fan 1

CdFan1 Analog

Output

Condenser Fan 1

Signal Status

Condenser

Fan 2

CdFan2 Analog

Output

Condenser Fan 2

Signal Status

Water Temp. A WaterTpA Analog

Output

Current water

temperature.

Remote VFD

Reset

RmVFDPos Analog

Input

Remote VFD

Position Reset

-1 100

Compressor A

Low Suction

Pressure

Alarm

A1LSPAlm Binary

Output

Alarm that indi-

cates

Suction Pressure

for Circuit A is

below the Low

Suction Pressure

Cooling (Heating)

Setpoint.

Compressor A

Lockout

Alarm

A1LktAlm Binary

Output

Alarm that indi-

cates Circuit A

Compressors are

locked out.

Compressor B

Low Suction

Pressure

Alarm

B1LSPAlm Binary

Output

Alarm that indi-

cates

Suction Pressure

for Circuit B is

below the Low

Suction Pressure

Cooling (Heating)

Setpoint.

Compressor B

Lockout

Alarm

B1LktAlm Binary

Output

Alarm that indi-

cates Circuit B

Compressors are

locked out.

Low Water

Temperature

Alarm

LWT1Alm Binary

Output

Alarm that

indicates water

temperature is

below the Leaving

Water Safety

Setpoint (Heating

only).

SNVTs for the VCM-X WSHP (Coil)

Binary Output SNVTs are SNVT_lev_disc

all other SNVTs are SNVT_count_inc_f

Parameter Name Object Description Limits

Proof of Water

Flow Alarm

POWF1Alm Binary

Output

Alarm that indi-

cates no

Proof of Water

Flow.

Module

Communica-

tions

Alarm

ComMAlm Binary

Output

Alarm that

indicates that one

or more Modules

are not commu-

nicating with the

VCM-X WSHP

Controller.

Bad Return

Air Sensor

RaTpAlm Binary

Output

Alarm that indi-

cates

a failure in the Re-

turn Air Sensor.

Title 24

Economizer

Feedback

T24EcFb Analog

Output

Current position

of feedback from

Economizer

actuator.

Title 24

Sensor Alarm

T24TpAlm Binary

Output

Outside Air

or Supply Air

Temperature Sen-

sor is shorted or

missing.

Title 24 Not

Economiz-

ing When It

Should

T24NEWS Binary

Output

Economizer is

enabled but not

following the

desired Econo-

mizer position

commanded.

Title 24

Economiz-

ing When It

Should Not

T24EWISN Binary

Output

Economizer is

not enabled but

the feedback

signal indicates

a position more

open than the

minimum.

Title 24

Damper

Failure

T24DpAlm Binary

Output

Economizer is

enabled but not

within 10% of

desired posi-

tion within 150

seconds.

Title 24 Ex-

cess Outdoor

Air

T24ExsOA Binary

Output

Economizer

feedback is lost or

Economizer is not

following com-

manded position.

Appendix D - VCM-X WSHP (Coil) LON Parameters

Revised 7/8/14

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 59 60

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