Liebert HIROSS Microface E User manual
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High Performance Air Conditioning
Microface E
User Manual
English
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Index
1 Foreword
2 The Microface
2.1 Introduction
2.2 Modules of Microface Control System
2.3 Microface Board and Jumper settings
2.4 LCD Display Module
2.5 Programming of the Microface Controller
3 Software / EPROM
4 Humitemp sensor
5 List of Microface spare parts
6 List of alarm-codes
7 List of control-parameters
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1 Foreword
This User Manual describes the Microface Control System. It contains information
concerning the architecture of the control system as well as the settings required
to obtain the desired behaviour of the Unit.
The Microface Control System has been especially developed to effectively
manage all the individual functions of air conditioning units.
2 The Microface
2.1 Introduction
The Microface is a microprocessor-based electronic controller, which manages
and controls automatically any processes of the unit. The Microface is installed
inside the electrical panel of the unit and is completed by the LCD display module,
containing the keyboard (3 no. keys) for the input of data and the LCD (Liquid
Crystal Display) to show any data like settings, current values and alarm
messages. These components allow for a quick and easy programming and set-
up of the unit.
2.2 Modules of Microface Control System
Microface controller consist of two modules:
1. The Microface printed circuit board, which controls the operation of the unit
2. The LCD display module with keyboard and display, which allows to
read/set/reset values, parameters and alarms
The connection between both modules (p.c.b. and display) is made by a 8pole
connecting cable (for details see chapter 2.3 and 2.4 of this manual).
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2.3 Microface Board and Jumper setting
In order to obtain the required functionality of the Microface controller acc. to the
specific needs of your application it is required to configure the Microface board
by an individual setting of jumpers during start-up of the unit.
Caution!
Never add / remove Jumpers when Microface is under power!
Fig. 2-3 Microface Jumpers and settings
Jumpers:
EWE: Eprom write enable. Always set this jumper
A: Adress setting. Units, to connect to other units: NO Jumper
A1: Analog inputs selection.
E/F: EPROM / Flash memory selection jumper. Set the jumper, when the EPROM is
installed. Do not set this jumper when Flash memory is installed.
SG: Subgroup ID settings.
HM: Comb connector for I-Module (only present, when humidifier is installed)
ES: EPROM/Flash memory size selection jumper. Set jumper between middle and right
pins for 1 or 2 Mbit size memory devices. Set jumper between middle and left pins
for 4 Mbit size memory devices.
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2.4 LCD Display Module
The interface module consists of a backlit LCD and of three push buttons that
permit an easy access to the unit parameters. Writing access is protected by a
password.
Fig. 2-4-1 LCD Display and Buttons
There are three LED’s: the yellow Led to indicate the unit is power supplied,
the green one lights up when the unit is in operation and the red one signals
either an alarm or a warning condition.
On the LCD the following symbols will be displayed:
Fig. 2-4-2 LCD Display
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Connection from the LCD display:
Fig. 2-4-3 Rear view remote Display
Caution!
Never use cables longer than 20m to connect the remote display!
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2.5Programming of the Microface controller
All values and parameters will be entered or get displayed as shown in the
example below.
The LCD Display Module allows to enter and setup any parameters of the unit
and displays any failure (warning or alarm) using individual codes.
If no key gets stroked for a while the display will return to show the parameter
P1 (first in list). In order to go through the entire list of parameters just strike
the “down” key, the next one will appear. The display always alternates to
show the value and the name of the current parameter. The system separates
3 individual groups of parameters. First those of group 0 (read only data) get
displayed, afterwards parameters of group 1 & 2 get shown. The access to the
adjustable data of groups 1 & 2 is protected by individual passwords.
The password 1 allows access to and permits to change the data of group1
only. If ones enter the password 2, however access and change of parameters
of both groups is granted.
Without or with incorrect password parameters of both groups with will be
displayed only but without the possibility to perform any modification.
To change the value of a parameter (possible only when the Password “PIN”
has been correctly inserted), scroll the list using the “up” and “down” push-
buttons until the desired parameter is displayed and press “Enter” (↵). By
pressing the “up” and “down” push buttons, it is possible to change the
corresponding value; after having obtained the required value, press enter (↵)
again. The display will show again the name of the parameter alternating with
the new value.
The Alarm section can be reached by pressing the “up” push-button when the
first parameter is on the display; alarms are pointed out according to their code
order. After having entered the alarm section, the alarm code is displayed and
every second the code is replaced by the coded description.
Pressing the “Enter” key (↵), when an alarm code is displayed on the LCD, all
the active alarms will be reset. After the reset operation, all the still active
alarms will be shown again. If there are no more active alarms, the first
parameter / value (P1) of the list will be displayed again.
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To move fast forward or backward to the first or last parameter just press “up”
or “down” and “Enter key (↵) at the same time.
3 Software / EPROM
The EPROM is the device, which stores the software program the Microface
has to work with. It doesn’t store any user-settings, this is done by the
Microface itself (in the RAM and the E2Prom). The name of the software and
its revision number are printed on the label on top of the EPROM.
The current version is MVM 160 021.
Fig. 3 EPROM
Caution!
Un-power the Microface before mounting/dismounting the EPROM.
Remove EPROM only with special tool; never use a screwdriver. Ensure
correct positioning and direction EPROM.
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4 Humitemp sensor
The Humitemp senor is a combined temperature- and humidity-sensor. If
installed the Microface will use the values of the Humitemp sensor for all
control operations. The Humitemp sensor is connected to the Microface board
by the Hirobus-cable (max. length: 25 m).
The Humitemp sensor is an air-sensor and only used for air-conditioning units.
Fig. 4 -1 Humitemp sensor
The address-switches / jumpers on the rear of the Humitemp sensor allow to
set different functions to the sensor.
5 List of Microface spare parts
Description Code
Microface (complete) 275297
Display 275098
Alarmcard 275148
Probe airflow PTC 275184
Humitemp Sensor 275181
Plastic Distance Holder
(4 no. of each code required)
271286
271287
271288
Fig. 4 -2 Humitemp jumper (set to control sensor)
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6 List of alarm-codes
Microface
Alarm-Code
Microface
Display
Information
Message-Description
Type of Failure
A1
„HP1“
High Pressure Compressor 1
Alarm
A2 „LP1“
Low Pressure Compressor 1 Alarm
Delay LPd
A3 „HC“
Chilled Water Temperature too high Warning
Delay:15min. after Sys. On
A4 „LC“
Chilled Water flow too low Warning
Delay: 10s
A5
„EHO“
Electr. Heaters overheated
Alarm
Delay: 30s, only if Heater is
operating
A6 „AF“
Fan failure
Warning
Start delay: 2min.
Operation delay: 10s
Heating, Humidification and
de-humidification Off
A7 „AF“
Fan failure
Alarm
Start delay 2min.
Operation delay 10s
Unit Off
A8 „CF“
Clogged Filters
Warning
Delay 10s
A9 „LE“
Water leakage
Warning
Indication only
A10 „LE“
Water leakage
Alarm
Unit Off
A11 „U11“
User-Input 1 triggered Warning
Indication only
A12 „U11“
User-Input 1 triggered Alarm
Unit Off
A13 „HFA“
Humidifier failure Warning
Delay 40min.
Table of contents
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