Operating and Maintenance Instructions
210-OMI13277_Iss1.doc
ORIGINAL INSTRUCTIONS
Page 2 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
Introduction
Commercial Demand Ventilation Controller, mains powered with enclosure, fan speed control of one/two fans.
Proportional Band Control
: Fan Speed varies based on either one or two 0-10V proportional sensor inputs
(Temp, RH, CO
2
), Proportional Band set by Variable Resistors, Fan Speed range set by rotary DIP switches.
Constant Pressure Control:
Pressure maintained at set-point, 0-10V pressure sensor input, PID control.
Pressure set-point(s) set by rotary DIP switch(es) or by second 0-10V Input (BMS or external Potentiometer).
Options
: set by on-board DIP switches, selection of Stop/Run and Set-points or fan speed by switched 230VAC
and volt-free inputs. Timed alternate fan run, with simultaneous run option. With indicators and alarm outputs.
Specification
CN1090
Supply Voltage
V AC
207 – 253 VAC
AC line Frequency
Hz
47 – 63 Hz
Supply Current
A
0.05 Amps, plus Fan load if wired via PCB 13A max.
Alarm Relays
Contact rating, 100mA max, 60VDC max
0-10V Inputs
100kOhm impedance, minimum PWM frequency 2kHz
Operating Environment
-30 to 60C, IP66 Enclosure
Connection Details (see “
Terminal Block Use
” below”)
Mains Connector J1
Pin
Function
SL1
1
Switched Live 1, Fan Speed / Set-point select input
SL2
2
Switched Live 2, Stop/Run control input (shipped with link to 230VAC Live to Run)
L
3
230VAC, Live (for Stop/Run control link)
L
4
230VAC, Live (Supply to Fan)
L
5
230VAC, Live (Input)
L
6
230VAC, Live (Supply to Fan)
N
7
230VAC, Neutral (spare)
N
8
230VAC, Neutral (Supply to Fan)
N
9
230VAC, Neutral (Input)
N
10
230VAC, Neutral (Supply to Fan)
E
11
Earth (Supply to Fan)
E
12
Earth (Input)
E
13
Earth (Supply to Fan)
E
14
Earth (spare)
Control Connector One, J2
Pin
Function
1
Alarm Relay, Contact A (Contacts Closed = No Alarm)
2
Alarm Relay, Contact B
3
Fan 1 Speed Control 0-10V Output
4
Fan 1 Tachometer Open Collector / Relay Input
5
Fan 1 GND / 0V
6
Fan 2 Speed Control 0-10V Output
7
Fan 2 Tachometer Open Collector / Relay Input
8
Fan 2 GND / 0V
9
Volt Free Select Input 1
10
0V for Select Input 1
11
Volt Free Stop/Run control input, (shipped with link to 0V to enable fan run)
12
0V for Stop/Run
13
Volt Free Select Input 2
14
0V for Select Input 2
