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Operating and Maintenance Instructions
ESD
Many modern electronic components are susceptible to damage from Electro Static Discharge (Static Electricity).
During commissioning, avoid unnecessary contact with electronic components on PCB's.
PCB's which are Static Sensitive should be stored in anti-static packaging until installed.
Installation
General:
See "Safety" information above.
For connections, see Connection Details table above. Route control wiring separately from AC mains wiring.
Remove enclosure knock-outs as required to fit cable glands, taking care not to damage the PCB. Cable entry at
enclosure end is recommended.
Tools:
A 2.5mm flat screwdriver is recommended for the screw terminal block clamps and Variable Resistor adjustment.
A voltmeter is required during commissioning.
230VAC Supply:
Controller connection to 230VAC supply must be fused to 13A maximum.
The supply for single phase fans up to 13A total load may be connected via this control PCB, connect Fans to
230VAC output and Earth output terminals. For higher currents or 3-phase fans route supply direct to fans.
Fans:
Connect fan supply, speed control and tachometer leads, see table above for connections. If fan has a 10V
output wire cut back & insulate. If fans are Alarm Relay type (not Tachometer), connect fan relay between 0V and
tachometer Input. If fan monitoring is not required, then link tachometer Input to 0V to prevent alarms.
Temperature sensors:
Connect the two Thermistor cable assemblies SN1060 as shown in the table above. Normally both sensors
should be installed in the supply airflow input to the HRU.
Select Inputs:
Connect Run/Stop and Speed/Set-point select inputs as required for the application, see Tables below.
PCB Switches and Variable Resistors:
Set DIP Switches and Variable Resistors as required, see tables and procedures below.
Potentiometers
RV1
Supply Fan PWM Output Low Speed, 20% to 100%
RV2
Supply Fan PWM Output High Speed, 20% to 100%
RV3
Extract Fan PWM Output Low Speed, 20% to 100%
RV4
Extract Fan PWM Output High Speed, 20% to 100%
DIP Switch 1
Position
1, 2, 3
4
No High Speed Start Delay.
5
No High Speed Run-on.
6
7
Supply Fan PWM, Open Collector
8
Extract Fan PWM, Open Collector
210-OMI12422_Iss3.doc
© ebm-papst UK Ltd, 2012
OFF
Maintenance Timer, see table below
RESERVED, MUST BE [Off]
ORIGINAL INSTRUCTIONS
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
sales@uk.ebmpapst.com
ON
High Speed Start Delay, Three minute fixed timer.
High Speed Run-on Off/ON, 20 minute fixed timer
Supply Fan PWM, 0-10V
Extract Fan PWM, 0-10V
CN1083
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