Sterling 30RA010-055 manual Appendix A, SCN Tables A_UNIT General Unit Parameters

Models: 30RA010-055

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APPENDIX A

SCN Tables

A_UNIT (General Unit Parameters)

DESCRIPTION

 

VALUE

UNITS

POINT NAME

FORCEABLE

Control Mode

0

= Test

 

STAT

N

 

1

= Local Off

 

 

 

 

2

= SCN Off

 

 

 

 

3

= Clock Off

 

 

 

 

4 = Emergency Stop

 

 

 

 

5

= Local On

 

 

 

 

6

= SCN On

 

 

 

 

7

= Clock On

 

 

 

 

8

= Heat Enabled

 

 

 

 

9

= Pump Delay

 

 

 

Occupied

No/Yes

 

OCC

N

SCN Chiller

Start/Stop

 

CHIL_S_S

Y

Low Sound Active

No/Yes

 

LSACTIVE

N

Alarm State

Normal/Alert/Alarm

 

ALM

N

Active Demand Limit

0 to 100

%

DEM_LIM

Y

Override Modes in Effect

No/Yes

 

MODE

N

Percent Total Capacity

0 to 100

%

CAP_T

N

Requested Stage

0 to 99

 

STAGE

N

Active Set Point

–20 to 70

°F

SP

N

Control Point

–20 to 70

°F

CTRL_PNT

Y

Entering Fluid Temp

snnn.n

°F

EWT

N

Leaving Fluid Temp

snnn.n

°F

LWT

N

Emergency Stop

Enable/Emstop

Enable

EMSTOP

Y

Minutes Left for Start

00:00 to 15:00

minutes

MIN_LEFT

N

PUMPS

 

 

 

 

 

Cooler Pump Relay 1

Off/On

 

COOLPMP1

N

Cooler Pump Relay 2

Off/On

 

COOLPMP2

N

Cooler Pump 1 Interlock

Open/Close

 

PMP1_FBK

N

Cooler Pump 2 Interlock

Open/Close

 

PMP2_FBK

N

Cooler Flow Switch

Open/Close

 

COOLFLOW

N

Rotate Cooler Pumps Now

No/Yes

 

ROT_PUMP

 

 

 

 

 

 

Heat/Cool Select

Heat/Cool

 

HC_SEL

N

CIRCADIO (Circuit A Discrete Inputs/Outputs)

DESCRIPTION

VALUE

UNITS

POINT NAME

FORCEABLE

CIRC. A DISCRETE OUTPUTS

 

 

 

 

Compressor A1 Relay

On/Off

 

K_A1_RLY

N

Compressor A2 Relay

On/Off

 

K_A2_RLY

N

Minimum Load Valve Relay

On/Off

 

MLV_RLY

N

 

 

 

 

 

CIRC. A DISCRETE INPUTS

 

 

 

 

Compressor A1 Feedback

On/Off

 

K_A1_FBK

N

Compressor A2 Feedback

On/Off

 

K_A2_FBK

N

CIRCA_AN (Circuit A Analog Parameters)

DESCRIPTION

VALUE

UNITS

POINT NAME

FORCEABLE

CIRCUIT A ANALOG VALUES

 

 

 

 

Percent Total Capacity

0-100

%

CAPA_T

N

Percent Available Cap.

0-100

%

CAPA_A

N

Discharge Pressure

nnn.n

PSIG

DP_A

N

Suction Pressure

nnn.n

PSIG

SP_A

N

Calculated HP Setpoint A

nnn.n

°F

HSP_A

N

Saturated Condensing Tmp

snnn.n

°F

TMP_SCTA

N

Saturated Suction Temp

snnn.n

°F

TMP_SSTA

N

Compr Return Gas Temp

snnn.n

°F

TMP_RGTA

N

Suction Superheat Temp

snnn.n

F

SH_A

N

77

Page 77
Image 77
Sterling 30RA010-055 Appendix A, SCN Tables A_UNIT General Unit Parameters, CIRCADIO Circuit A Discrete Inputs/Outputs