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PU-E SERIES PICK-UP INSTALLATION
The PU-E series pick-up is an economical way to monitor motor speed. Its patented design provides ease of installation in otherwise
difficult to reach areas. The PU-E pick-up operates at a +5 volt level, producing a 5 volt square wave output, which may be fed into
Dart's DM4000 series field programmable tachometer, closed loop controls, or any other digital device.
flat
washer
10-32
screw
dust
magnet
cover
disc
black wire
common
In order to obtain a stable reading on the display, the DM4000 series requires a
minimum input of 125 pulses per minute, and a maximum output no greater than
600,000 pulses per minute.
EXAMPLE:
If the motor shaft is rotating at 14 RPM, a PU-20E pick-up, which has 10 pulses per
revolution (PPR) out, is recommended. Thus 10 PPR multiplied by 14 RPM equal 140
PPM (pulses per minute), which satisfies the minimum requirement of 125 PPM (ie. 10
pulses/revolution x 14 revolutions/minute = 140 pulses per minute).
No other mounting screws are necessary, as the cord will keep the unit from rotating.
The PU-E gives a high signal when the north pole of the magnetic disk crosses the hall-
effect. The signal is switched low when the south pole crosses the same resistor.
Caution: The PU-E cord should not be grouped with any other wires or cords. For applications with PU-E wire over 6 feet
long, or noisy environments, a shielded cable is recommended. Connect the shield to the common terminal on the ASP10,
leaving the shield on the PU-E end floating.
DM4000 SERIES HOOK-UP & WIRING
The DM4000 series is factory preset to measure an input of one
(1) pulse per revolution (PU-E pick-up not included). If a different
pulse rate is desired, then field programming is required. Thread-
ing wires through back of endplate should be done before
connecting wires to the terminal strip of the meter.
DM4000
SERIES
PICK-UP
INPUTS
TOP VIEW
CAUTION: Do not connect any other power source to the +5 volt supply!!
PU-E
bearing
tapped
motor shaft
(.250" deep)
3/16"
spacer
red wire
+5 volts
white wire
signal
AC - connect either side of incoming AC line
P1
AC
-5
AC - connect either side of incoming AC line
AC
-4
SIG
-3
COUNT SIGNAL INPUT from pick-up (for PU-E, connect white wire)
+5V
-2
+5 VDC to pick-up (for PU-E, connect red wire)
COM
-1
COMMON from pick-up (for PU-E, connect black wire)
model
pulses per
number
revolution
PU-2E
1
PU-4E
2
PU-10E
5
PU-20E
10
CAUTION: DO NOT OVER TIGHTEN MOUNTING SCREW !!
LIFT UP TOP COVER OVER
ENDPLATE AND SLIDE BACKWARDS
TO EXPOSE TERMINAL STRIP.
REMOVE 2 SCREWS FROM BACK
ENDPLATE AND REMOVE. WIRE
TERMINAL STRIP AS NECESSARY.
3
minimum
maximum
RPM
RPM
125.0
5000
62.5
5000
25.0
5000
12.5
5000
DIMENSIONS
1.60
.875
2.40
72.00
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