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Operating and Maintenance Instructions
4.0 Configuration and First Use
4.1 Electrical connections
The electrical connections are shown in Appendix B – Electrical Connections. The required connections to the
controller 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 and their different configurations is shown in Section
5.0 Operating Modes. For the purpose of explaining the initial configuration and first use of the controller, the
connection diagram for the controller's factory default operating mode of "Monitor" is show in Figure 2 below:
CAUTION: Risk of damaging the fans if two power supplies are connected at the same time:
Do not connect fans' 10V output to the controller if the controller is powered from an external power
4.2 General and initial power ON
When power is applied, the controller interrogates the on-board memory for a previously stored fan array and
configuration parameters. If there is a previously stored fan array, the controller 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 controller will display
the Factory Default Main Menu screen where setup is required, see 4.3 First time controller configuration.
Status Indicator
LEDs
Figure 3 - Fan status screen showing that the controller had a previously stored fan array
The controller has three status indicator LEDs, an LCD text screen, and a keypad interface to navigate around the
configuration menus and fan information.
210-OMI14229-Iss8.1
© ebm-papst UK Ltd 2021
Figure 2 – Typical wiring for Monitor Operating mode
supply.
CN1116 Full OMI
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
sales@uk.ebmpapst.com
LCD Text Display Screen
Keypad
Page 8 of 47
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