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CRI
Catalog and Design Guide Section |
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Click
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large scale version |
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| TachScan-3
Fan Speed Alarm |
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SmartFan
TachScan-3 is a digital fan speed alarm
that monitors the tach pulses
from up to three DC
or AC fans or blowers and provides OR’d pass/fail
signals. The TachScan-3 digital fan speed alarm is compatible with any fan
that provides open collector or
voltage source tach pulses. Three trigger speeds
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are selectable by jumper. If the speed of any
air
mover falls below the trigger speed, the TachScan-3 digital fan speed alarm signals
are generated. Alarm signals can drive LEDs, logic,
optical isolators or MOS Relays. The TachScan-3 can be used with any SmartFan speed controller.
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Application and Design Information See: |
In addition to the standard line of SmartFan controls and alarms, Control Resources also provides custom control design and manufacturing services to provide you with the optimum cooling solution for your OEM control applications. |
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| Features |
- The SmartFan TachScan-3 accepts
any supply voltage from 6 to 60 VDC and distributes
power
to DC fans through the same header used to sense tach
pulses. It can
also be used to power the DC tach circuits built into
AC fans. (Special part numbers 030M3205 & 030M320R4 required for most AC fans)
- Compatible with any SmartFan speed controller.
- Three
inputs monitor fans with any open collector or voltage
source
tach pulses.
- P/N's
030M320 and 030M3205 provide simultaneous NO and NC open collector
outputs from optical isolators which can sink up to
1.0 mA to
drive logic circuits.
- P/N's
030M320R and 030M320R4 provide simultaneous NO and NC isolated
outputs
from a Dual-Pole MOS Relay which can sink up to 100
mA to drive
heavy loads.
- Jumper
sets trigger speed to 1,000, 2,000 or 4,000 PPM.
- Can
drive two single LEDs or one bi-colored LED.
- Small
size of 3.5” X 1.5” permits mounting in
small spaces within
fan trays, etc.
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| Specifications |
| Part
Number |
Fan Type |
Isolated
Alarm Sinking Current
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Supply
Voltage Range |
Maximum
Input Current |
Maximum
Output Current to Any Fan
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| 030M320
030M320R |
DC |
1
mA
100 mA |
6
to 60 VDC |
4.0
Amps |
4.0
Amps |
| 030M3205
030M320R4 |
AC |
1
mA
100 mA |
6
to 60 VDC |
4.0 Amps |
Not Applicable
For Tach Circuit Only |
| H115
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Hardware
Pack |
Note:
Maximum operating temperature is 65°
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view installation and operation instructions: |
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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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