APC InfraStruXure InRow RC Service Manual download pdf (Page 9)

Microprocessor Controller

APC InRow SC Technical Data Manual 6

Microprocessor Controller

Microprocessor Controller

The microprocessor controller is

standard on each system. The con-

troller provides precision control

for the demanding requirements of:

• Data centers

• Server rooms

• Wiring closets

• Switch rooms

• UPS rooms

Open Architecture

The NetworkAIR SC protocol is

open for integration with all build-

ing management systems.

Communication interface on the

system is MODBUS RS485.

Control Type

Controller utilizes proportional and

integral derivative (PID), a time

proven precision environmental

control method. The PID is non-

adjustable, and can not be customer

configured.

Control

The backlit, four-line by twenty

character display is password

configurable.

Functions

• Supply and Return Air

Temperatures

• Operational Mode Control

• Event Logging

•Alarms

• Fan Speed Adjustment

• Input/Output Module

Programming

• Refrigerant Discharge and

Suction Pressure

• Suction Line Temperature

Logging

The microprocessor displays the 30

most recent alarms. Each alarm log

contains a time/date stamp as well

as operating conditions at the time

of occurrence. The controller also

displays run time, in hours, for

major components (Air Filter, Con-

denser Fans, Evaporator Fans,

Compressor, Condensate Pump,

Fan Power Supplies).

Factory Default Set Points:

• Cool: 72.0°F (22.2°C)

• Deadband: 1.8°F (1.0°C)

• Supply Air InRow: 64.0°F (17.8°C)

• Supply Air RACS: 64.0°F (17.8°C)

• Supply Air Spot: 57.0°F (13.9°C)

Alarms

• Air Filter Clogged

• Air Filter Run Hours Violation

• Condensate Pump Full Fault

• Condenser Fan #n Fault

• Cooling Failure

• Persistent High Discharge/Low

Suction Pressure Alarm

• Rack Inlet High Temperature

Violation/Fault

• Suction Pressure Sensor/

Temperature Fault

• Supply Air High Temperature

Violation

• Upper Return/Supply Air

Sensor Fault

• Water Detection Fault

• Discharge Pressure Sensor

Fault

• Evaporator Fan #n Fault

• External Communication Fault

• Fan Power Supply Left/Right

Fault

• Filter Sensor Fault

• High Discharge Pressure

Alarm

• Internal Communication Fault

• Lower Return/Supply Air

Sensor Fault

• Low Suction Pressure Alarm

• On Standby: Input Contact

Fault

X

Critical Alarm LED

Y

Warning Alarm LED

Z

Check Log LED

[

Status LED

\

Liquid Crystal Display (LCD)

]

Up and Down Arrow Keys

^

ESC key

_

Enter key

`

Help key

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