Table of Contents
Advertisement
Operating and Maintenance Instructions
The MDC has three fan status indicator LEDs, a text screen and a keypad interface to navigate around the
configuration menus and fan information.
BACK button
•
The FORWARD / ENTER button moves forward to the next fan if monitoring a fan's status screen or
confirms the request / change of a set value if configuring parameters
•
The UP and DOWN buttons navigate through the screens and change set values
•
The BACK button moves back one step in the software structure without saving any changes made
Menu structures are shown with the use of flow charts in Appendix H – Menu Structure Flow Chart. There are
flow charts for various tasks, set up of each mode, settings, use of the MDC, interrogation of alarms, etc. For
example, H1 – Fan Addressing - New Fan Array -Initial Setup shows the menu structure for initial set up with
new fans, H2 – Fan Addressing - Existing Fan Array - Initial Setup shows the menu structure for initial set up
where the fans are already addressed and H20 – Advanced Settings – LCD Brightness shows how to change
illumination of the LCD.
Once configured and when in normal operating mode, the green fan status indicator LED will be on and the MDC
will display the operating condition of the fans. Using the keypad interface, the user can scroll through the network
of connected fans to check set points, power consumption, alarm conditions and fan warnings from each fan.
When a fan enters an alarm state or has lost communication, the MDC will illuminate the red fan status indicator
LED and text on the display screen will show the fan that is experiencing an alarm condition.
If another fan in the array enters an alarm state, the red fan status indicator LED will remain on and controller will
then change to display the second fan experiencing an alarm condition. The MDC will automatically change to
display a fan that is experiencing an alarm. The same applies if one or more fans lose their communication.
If a warning condition has been detected in any fan, the MDC will illuminate the yellow fan status indicator LED.
The display will not show which fan has raised the warning. Fans that have entered a warning condition status can
be found by navigating through the array using the keypad buttons or by processing the MDC Modbus registers
using an external Modbus Master device connected to the MDC RS485 Slave port.
4.3 Configuring the Fan Array
The MDC can be used on a new installation with fans delivered in their factory default condition or on an existing
array of fans which have been networked and pre-addressed.
4.3.1 Configuring the MDC with fans that are in their factory default setting
New fans are typically supplied in the factory default condition with Modbus address 1. New MDC units are supplied
without any stored fan array configurations. On first application of power to the MDC, the Main Menu will be
displayed as shown in Figure 5 below:
210-OMI14229-Iss2
© ebm-papst UK Ltd 2018
DOWN button
Figure 4 - Keypad buttons
Figure 5 - Main menu display screen on first application of power
Operation & Maintenance Instructions
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
sales@uk.ebmpapst.com
UP button
FORWARD / ENTER button
Page 9 of 45
Advertisement
Table of Contents
