STULZ CyberRow DX Series Installation, Operation & Maintenance Manual
4.1.1 Features
4.1.1.1 Field
Confi gurable
The program for the
E2
Series controller is fi eld
confi gurable, allowing the operator the capability of
selecting control parameters and setpoints specifi c to
the application. Operator interface for the
E2
controller
is provided via an attractive, door mounted user
interface display panel. The display panel has a backlit
LCD graphical display and function keys giving the
user complete control and monitoring capability of the
precision cooling system. The menu driven interface
provides users the ability to scroll through and enter
various menu loops. Monitoring of room conditions and
A/C system operation is allowed without entering a
password. Modifi cations to the control setpoints require
the use of a password.
4.1.1.2 Password
Protection
Access to the
Info
menu and
Alarms
log is allowed without
the use of a password. The controller is programmed to
recognize predetermined security levels before allowing
access to display screens containing critical variables.
Three secured menu levels (
Control
,
Service
and
Factory
)
support unique passwords that must be entered to access
the menu screens so only authorized personnel may
perform modifi cations to the settings.
4.1.1.3
Restorable Setpoint Parameters
Upon initial start-up the A/C system operates using the
setpoints programmed by the factory. The customer may
enter new operating parameters in the Control and Service
menus and the system will then operate accordingly.
The new setpoints may be stored as Customer Default
setpoints. The primary setpoints entered by the factory
still remain stored in the controllers' memory as Factory
setpoints.
The setpoints for the system may be re-adjusted in the
Control menu at any time. If it becomes necessary, the
customer may restore the setpoints back to the Customer
Default setpoint values or to the original Factory (primary)
setpoint values in the Service menu ( See Section 4.5.5.9).
4-1
4.0
E²
CONTROLLER
4.1 General
The advanced microprocessor based,
E2
Series
controller is a highly versatile and fl exible A/C system
controller. It is designed primarily for STULZ Precision
Air Conditioners. The controller is equipped with fl exible
software capable of meeting the specifi c needs of the
application. The controller is completely programmed at
the factory and therefore, most applications will require
no fi eld set up. However, the default setpoints and their
ranges are easily viewed and adjusted from the user
interface display. The program and operating parameters
are permanently stored on FLASH-MEMORY in case of
power failure.
The
E2
Series controller is designed to manage
temperature and humidity levels to user defi ned setpoints
via control output signals to the A/C system. Control
parameters have variable outputs from 0 to 100% of the
full rated capacity. The controller continually receives
inputs for the measurable control conditions (temperature
and relative humidity) via sensors installed in the
cabinet. The internal logic determines if the conditions
require cooling or dehumidifi cation. Control setpoints are
established to maintain the room's designed conditions.
The controller responds accordingly to changes and
controls the output(s) to the air conditioning system so
temperature/humidity conditions reach the user defi ned
control setpoints.
Содержание CyberRow DX CRS-042-G
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