Operating and Maintenance Instructions
210-OMI13277_Iss1.doc
ORIGINAL INSTRUCTIONS
Page 4 of 15
© ebm-papst UK Ltd, 2012
Chelmsford Business Park Chelmsford Essex CM2 5EZ
Telephone: +44(0)1245468555 Fax: +44(0)1245466336
e-mail
CN1090
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.
Proportional Band Control:
Connect first sensor to “0-10V Input, Sensor One“ (J3 pin 3) and “0V“ (J3 pin 6), plus “24VDC Unregulated
Output, 25mA max“ (J3 pin 9) if required
If used, connect second sensor or Local / Remote BMS 0-10V control to “0-10V Input, Sensor Two / External
Pressure Set-point 0-10V input“ (J3 pin 5) and “0V“ (J3 pin 8), plus “24VDC Unregulated Output, 25mA max“ (J3
pin 9) if required.
Constant Pressure Control:
Connect pressure sensor to “0-10V Input, Sensor One“(J3 pin 3) and “0V“ (J3 pin 6), plus “24VDC Unregulated
Output, 25mA max“(J3 pin 9) if required.
If used, connect External Pressure Set-point 0-10V to “0-10V Input, Sensor Two / External Pressure Set-point 0-
10V input“(J3 pin 5) and “0V“(J3 pin 8).
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.
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.
DIP Switch 1
Position
OFF
ON
1
Proportional Band Control mode
Constant Pressure PID Control mode
2
Two Fans
Single Fan, Fan1 only
3,4
Simultaneous / Alternate Fan Run Changeover Period Run, see table
5, 6
See tables below
7
Fan 1 PWM, Open Collector
Fan 1 PWM, 0-10V
8
Fan 2 PWM, Open Collector
Fan 2 PWM, 0-10V
DIP Switch 1
Position
Simultaneous / Alternate Fan Run
Changeover Period (Hours)
Fan Fail action
3
4
Off
Off
Simultaneous Fan Run (Alternate run at low airflow)
Remaining fan runs faster
ON
Off
6
Swap to standby fan
Off
ON
12
ON
ON
24
See
Proportional Control Band
or
Constant Pressure Control
sections below for additional settings.
