SmartFan TachStrip is a modular fan
speed alarm that accepts tachometer
(Hall Effect) pulses from DC or AC fans or
blowers. TachStrip monitors these pulses
and generates failure alarms if air mover
speed drops below a preset trigger speed.
TachStrip comprises a strip of 6 individual
fan speed alarm units bused together. The web
separating units can be cut to provide
strips to handle any quantity of fans.
Each unit monitors one air mover and
provides alarm outputs for that air mover.
The bus distributes power to each unit and
OR’s alarm signals from each unit to
provide a single alarm output if any air
mover should fail. Each alarm unit has
three outputs used to drive a logic circuit,
LED, or piezo alarm.
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.
Product Features - SmartFan TachStrip Fan Speed Alarm
Accepts
open collector or voltage source pulses from nearly
any DC
or AC fan or blower.
6
alarm unit strips are easily separated to monitor
any quantity
of fans.
Distributes
power to DC air movers through same connector used
to sense pulses.
Separate
alarm outputs are provided for each fan.
Alarm
channels are OR’d providing a single alarm if
any fan fails.
Trigger
Speed is adjustable by jumper to 1500, 2500, or 4000
PPM.
Permissible
power supply voltage is 5.0 VDC minimum to 25.0
VDC maximum.
Normally Closed (NC) Alarm Output Closed above trigger speed
and will sink 4 mA at 0.4 VDC or less. Open below trigger speed and
will accept up to 30 VDC. Referenced to fan negative terminal. Applies
nominal 12 mA to an LED connected from NC to L.
Normally Open (NO) Alarm Output Open above trigger speed
and will accept up to 30 VDC. Closed below trigger speed and will sink
4 mA at 0.4 VDC or less. Referenced to negative fan terminal. Applies
nominal 12 mA to an LED connected from NO to L. Applies nominal
power supply voltage to a piezo alarm connected from NO to P.
OR’d (OR) Alarm Output OR’d with all other alarm units in
TachStrip. Other characteristics identical to NO alarm output.
Dimensions - SmartFan TachStrip Fan Speed Alarm
Specifications - SmartFan TachStrip Fan Speed Alarm
Part Number1
Supply Voltage Range
Alarm Units Per Strip
Maximum Input Current
Maximum Output Current to Any Fan
015B125
5 to 25 VDC
1
4.0 Amps
4.0 Amps
015B625
6
H109-F2
Hardware Pack
1. Part numbers above are RoHS 5/6 (contains lead) compliant. For full 6/6 compliance add a "-F" suffix to the part number.
2. Supports one single alarm unit (015B125) per pack.
