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Nimbus AC Motor Speed Control for Motors, Fans and Pumps |
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Nimbus AC motor speed control is a compact, digital motor, pump
and fan speed control designed for the HVAC, electronics and industrial
motor control markets. Nimbus can automatically control most single
phase AC motors used in applications such as; humidity control, clean
room pressurization, equipment cooling, ceiling fan control, exhaust
ventilators, duct fans & blowers. Nimbus accepts 115 or 230 VAC
(50/60Hz) supply voltages and regulates fan speed from a control
signal (0-20 mA, 0-10 VDC), remote transducer or up to three remote temperature sensors. |
Automatic voltage and frequency detection, current ratings up to 7.5
Amps and three mounting and connection configurations, including DIN
rail mount and "4x4 job box" mount, make this microprocessor based
industrial motor control extremely flexible and economical.
Benefits of using SmartFan Nimbus for AC motor speed control include acoustical noise reduction,
environmental (humidity, temperature or pressure) regulation,
greater product reliability, increased fan life, improved safety
and energy savings. |
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CAUTION: SmartFan AC motor speed controls are designed for OEM (Original Equipment Manufacturers) and are not intended for end-user or after-market applications. SmartFan AC motor speed controls should only be used with compatible induction motors: Permanent Split Capacitor (PSC) or Shaded Pole. All AC motors must be approved by the motor manufacturer or thoroughly validated prior to use. Attempting to control a fan or motor that is not compatible could cause excessive heating and/or permanent damage to the motor. |
Control Comparison & Motor Efficiency
See technical article on how the Nimbus AC motor speed control
compares
to other controller technologies. |
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Nimbus AC Motor Speed Control Product Features |
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- Power
source: 95 - 250 VAC, automatically detected.
- Frequency:
47-64 Hz, automatically detected.
- AC
Motor Type Compatibility: PSC (Permanent Split Capacitor) or Shaded Pole, automatically
detected
- Full
voltage start pulse
- Does
not require a separate low voltage power source
- Temperature
alarm output when control is based on remote temperature
sensor(s)
- Keyed
mounting holes
- Can
also control heaters, compressors and pumps
- UL
recognized to UL508, CSA-C22.2, File E100344
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Nimbus AC Motor Speed Control Selectable Options |
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- Current
ratings: 2.5A to 7.5A (at 40°C still air)
- Motor and Fan Control
based on:
0-20 mA control signal
0-10 VDC control signal
Up to three remote temperature sensors (supplied separately)
Remote transducer (humidity, pressure, flow, etc.)
On board pressure transducer
- Mounting
options:
PCB mount
DIN Rail mount
4x4 electrical job box mount
NEMA 4 X case
- Connections
options:
Terminal block
18 AWG wires.
- Dip
switch allows user selectable settings of:
4 control (full speed) temperature settings
2 slope (difference between full and idle) settings
4 idle speeds
Fan on/fan off threshold
10 pressure settings
64 fixed speed settings
- Sensors
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Fig.
4
X = 0.86" (21.8mm) for 240x2xxx
X = 1.06" (26.9mm) for 240x6xxx
X = 2.06" (52.3mm) for 240x7xxx |
Fig.
5
Electrical
job box mount style CRI# 240x3Wxx or 240xJWxx |
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Nimbus AC Motor Speed Control Part Numbering System |
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| Nimbus |
1Control
Mode |
3Current
Rating /
Packaging |
Connector |
Special
Features |
| 240 |
B
= Current, voltage, temperature, remote transducer
or fixed speed
V2 = Current or voltage only
T2 = Temperature and remote transducer
only
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2
= 0. 15 to 2.5 Amps
3 = 0. 15 to 3.0 Amps (Job Box)
6 = 0. 50 to 6.0 Amps
7 = 0. 50 to 7.5 Amps
J = 0. 50 to 7.0 Amps (Job Box) |
T
= Terminal Block
W = 18awg wires |
00
= standard
XX = specials |
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1. When used in the temperature or remote transducer
control mode, a sensor (sold separately) is required.
Choose an air, surface or liquid temperature sensor
or humidity sensor from the CRI catalog or via your
own transducer.
2. A minimum order of 50 units is required to supply
V or T models.
3. 40°C, still air, max current rating.
| Stock
Product |
240B2T00 (Fig. 2)
240B3W00
240B6T00
240BJW00 (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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Nimbus AC Motor Speed Control Manual Pages |
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Use the links below for addtional manual pages or for a complete manual (9 pages), click on the Operation/Installation Manual PDF link above.
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