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Operating and Maintenance Instructions
4.0 Configuration and first use of the MDC
4.1 Electrical connection – general information
The electrical connections are shown in Appendix B – Electrical Connections. The required connections to the
MDC will depend on the intended use, i.e. the intended operating mode, and the desired configuration of fans,
sensors, inputs and outputs.
A suggested connection diagram for each operating mode is shown in Section 5.0 Operating Modes. For the
purpose of explaining the initial configuration and first use of the MDC, the connection diagram for the factory
default operating mode of "Monitor" is show in Figure 2 below:
Figure 2 – Typical wiring for default operating mode when used with multiple fans
CAUTION: Danger of damaging the fan if two power supplies are connected at the same time
Do not connect the fan's 10Vdc output to the controller if powering the controller from an external supply
4.2 General and Initial Power ON
The MDC is pre-installed with four different operating modes, see Section 2.0 Introduction
When powered is applied, the MDC undertakes a PCB and software version check and then interrogates the on-
board memory for a previously stored fan array and configuration parameters. If there is a previously stored fan
array, the MDC will display the status screen of the first fan in the array as shown in Figure 3 below. If there is no
previously stored fan array the MDC will display the Main Menu screen where setup is required, see Figure 5.
Status Indicator
LEDs
Figure 3 - Fan status screen showing that the MDC had a previously stored fan array
210-OMI14229-Iss2
© ebm-papst UK Ltd 2018
Operation & Maintenance Instructions
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
sales@uk.ebmpapst.com
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