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Mechanical Outline
Connection Details
1. 10V DC Power Supply
2.
O/P => 0 -10V Control Signal
3. 0V
4. T => Tacho Signal
Operation
The board is designed to generate a control voltage depending on the potentiometer setting. This can be adjusted
by turning the spindle clockwise for a higher duty cycle PWM signal and vice versa. The range of the PWM is 0-
100% duty cycle which is equivalent to 0-10v. The potentiometer (R4) and spindle are located as seen in
mechanical outline. A DIP Switch ('T') on the board enables the user to toggle between control voltage display
and tacho count display. For control voltage display, set the DIP Switch 'T' to ON. For tacho count display, set the
same DIP switch to OFF. Only one fan tacho can be monitored or its reading displayed at any one time. To set
the number of pulses per revolution, use DIP switch S0 and Sl. See table below for the various configuration.
Set unused DIP switch S2 to OFF before powering the controller to prevent it entering TEST MODE.
S0
OFF
OFF
ON
ON
210-OMI13839.docx
Operating and Maintenance Instructions
S1
OFF
ON
OFF
ON
ORIGINAL INSTRUCTIONS
ebm-papst UK Ltd
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
sales@uk.ebmpapst.com
Pulses per revolution
1
2
3
4
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