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CRI
Catalog and Design Guide Section |
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Fig.
1: CRI #036BCT00 with DIN350 DIN
rail mount kit
(sold separately). |
Fig.
2: CRI #036BCT00 |
Fig.
3: CRI #036BJW00
with 4x4 Job Box Cover Plate
(Job Box not supplied). |
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| Cirrus Programmable Interface
for Speed Controllable (PWM) Fans. |
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SmartFan®
Cirrus PWM controller is a compact, microprocessor based fan speed control designed for the electronics, industrial and HVAC control markets. The Cirrus can automatically control most PWM circuit (4 wire) controllable 24 and 48 VDC fans used in applications such as: equipment cooling, humidity control, clean room pressurization, exhaust ventilators, duct fans & blowers. The Cirrus provides fan speed control from a 0-20mA control signal, 0-10VDC control signal, remote transducer or thermistor.
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On board programming and three mounting and connection configurations, including DIN rail mount and "4x4 job box" mount, make this fan control design extremely flexible and economical.
Benefits of using SmartFan
Cirrus PWM controller for DC motor speed control include acoustical noise reduction,
environmental (humidity, temperature, pressure or flow)
regulation, greater system reliability, increased
fan
life, improved safety and energy savings. |
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For
Application, Design and
Custom Control Information See: |
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| Features & Options (off the shelf) |
- DC Motor Speed control for one or two 24 or 48 VDC PWM circuit controllable fans.
- Power
source: 20 - 60 VDC (passed through to fan).
- Settable PWM frequencies between 1000Hz and 10,000Hz.
- Fan Control can be based on:
- 0-20mA control signal
- 0-10VDC control signal
- Remote transducer (temperature, humidity, pressure, flow)
- Remote thermistor (sold separately)
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- Isolated control inputs.
- Temperature & loss of signal alarm.
- Tach alarm with 3 selectable speed settings.
- Remaining fan switches to full speed upon fan failure.
- Potentiometer settable Max and Min fan speeds.
- Potentiometer settable Max and Min control signal levels.
- Potentiometer settable 0-18VDC supply voltage to drive external transducer or alarm.
- Mounting Options: PCB mount, DIN Rail mount, 4x4 electrical job box cover mount.
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| Customizing
Options |
- PWM frequencies below 1000Hz and above 10,000Hz.
- Fused fan inputs.
- Hard coded control curve.
- Hard coded alarm trigger points.
- Hard coded transducer supply voltage.
- On board thermistor.
- On board pressure transducer.
- NEMA 4X case.
- Connections: Terminal Block, 18 AWG wires.
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Fig.
4
Circuit board dimensions CRI # 036xCTxx
Click on image for larger diagram
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Fig.
5
Electrical
job box mount style CRI# 036xJWxx
Click on image for larger diagram |
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| Part
Numbering System |
| Nominal voltage |
1Control
Mode |
3Configuration |
Connector |
Customized options |
| 036 |
B
= Current, Voltage, Thermistor* or remote Transducer**
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C = Circuit Board only
J = Job Box Cover Mount
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T
= Terminal Block
H = Header
W = 18awg wires |
00
= standard |
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* When used in the thermistor control mode, a sensor (sold separately) is required. Choose an air, surface or liquid temperature sensor from the CRI catalog or website at Sensors.
** When a transducer is required one can select a humidity transducer from the CRI catalog or website at Sensors or use the remote transducer or your choice.
| Stock
Product |
036BCT00 (Fig. 2)
036BJW00 (Fig. 3)
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U.S.
Patents 4,659,290, 4,722,699 and 5,364,026
DIN
Rail Option (Fig 1):
Units supplied in circuit board form may be mounted
on a DIN rail using DIN rail kit CRI #DIN350.
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| To
view installation and operation instructions: |
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CRI
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Control Resources | Site Map |
Control Resources Incorporated
11 Beaver Brook Road
Littleton MA, 01460 USA
Tel: 978-486-4160
Fax: 978-486-4772
email: sales@controlres.com
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