4
Transverse Sensitivity ≤5% ≤5%
Amplitude Linearity(D) ±1% ±1%
ENVIRONMENTAL
Shock Limit (peak) 5,000 g 49 050 m/s2
Temperature Range -65º to + 185ºF -54º to +85ºC
Temperature Coefficient -0.05%/ºF -0,09%/ºC
Strain Sensitivity 0.001 g/µε 0,01 m/s2/µε
ELECTRICAL
Setting Time(E) 5 sec 5 sec
Excitation Voltage 18 to 28 volts 18 to 28 volts
Excitation Current 2 to 20 mA 2 to 20 mA
Output Impedance <100 ohms <100 ohms
Electrical Noise Broadband 200 µg 1 962 µm/s2
Electrical Noise Spectrical: 10 Hz 4.0 µg/√Hz 39,2 (µm/s2)√Hz
100 Hz 1.2 µg/√Hz 11,8 (µm/s2)/√Hz
1000 Hz 0.4 µg/√Hz 3,92 (µm/s2)/√Hz
Output Bias 8 to 14 volts 8 to 14 volts
Full Scale Output Voltage ±5 volts ±5 volts
Discharge Time Constant ≥0.3 sec ≥0,3 sec
MECHANICAL ENGLISH S.I.
Size: Hex × Height 11/16 × 1.1 in 17.5 × 27.9 mm Supplied Accessories:
Weight 1.2 oz 35 gm Single Point Calibration @ 100 Hz
Mounting Thread (female)(F) 1/4–28 Not Applicable
Notes:
Mounting Torque 2 to 5 ft-lb 2,7 to 6,8 N-m (A) Conversion Factor: 1 g = 9,81 m/s2
Sensing Element Ceramic Ceramic (B) 1 Hz = 60 cpm (cycles per minute)
Case Material 316L St. Stl. 316L St. Stl. (C) Mounted Resonance (nominal)
Sealing Welded Welded (D) Zero Base Best Straight Line
Microdot 10–32 Microdot Microdot (E) Within 1% of output bias
Connector Position Side Side (F) 1/4–28 thread has no equivalent
in S.I. system.
USAF, USN and TAF Pillow Blocks Fitted with a Proximity Switch
SPEED PICKUP:
A. Connection to a PLC:
1. AC Proximity Probe:
The AC proximity probe can be connected directly to
a PLC using an AC input card such Allen Bradley
1746-IA4, 1746–IA8 or 1746-IA16. Other cards are
also available for the PLC 5.
Care must be given to the program timing to ensure
that all the pulses are captured by the PLC. If the
program is too long, DODGE offers a programmed
Allen Bradley Micrologix PLC to provide the function
of a zero speed switch.
2. DC Proximity Probe:
The DC proximity probe can be connected to a PLC
using DC input cards such as Allen Bradley 1746-
IV16 or 1746–IV8. Again care must be given to the
program timing to ensure capturing all the pulses
from the probe.
If the program is too long to capture all the pulses,
DODGE offers a programmed Allen Bradley
Micrologix PLC to provide the function of a zero
speed switch.
B. If a PLC is not available, DODGE offers a programmed
Allen Bradley Micrologix PLC to function as a zero speed
switch, Part No. 055224 (AC).
Note: When specifing the DODGE/AB Micrologix zero speed
switch, please specify the customer preference for 24
volts DC output or 120 volts AC output.
A speed pickup provides a means of sensing speed
variation up to 480 RPM (AC prox.) and up to 4200 RPM
(DC prox.) by sensing the rotation of a specially equipped
locknut with two raised surfaces.
USAF/USN PILLOW BLOCKS
EQUIPPED WITH SPEED PICKUP:
For USAF/USN the speed sensor has been present at the
factory. To indicate the setting a blue dye was used to mark
where the proximity probe should be screwed into the
housing. The probe was backed off and shipped loose to
protect it during shipping and during the lowering of the shaft
and the bearing. The proximity probe is made to be used
only on the cast closed end housing and the non-expansion
bearing of a tail pulley. For bore sizes up to 5", misalignment
must not exceed ± 1/2degree. Misalignment for larger bore
sizes should not exceed ± 1/4degree.
After lowering the shaft and the bearing into the lower half of
the housing, screw the proximity probe into the housing up
to the blue dye mark. Use the lock nut to secure the
proximity probe in the housing. Use a tightening torque of 75
inch-lbs. for 12 mm AC switch, and 150 inch-lbs. for 18 mm
Ac switch, and 25 inch-lbs. for DC switch also used with
EZLINK. The enclosure provided can be used as the
junction box for wiring the proximity switch to the out going
cable. Follow all local and national electrical codes in wiring
the proximity probe. Check the gap between the proximity
probe and the raised portion of the shaft nut to make sure it
is correct. For the 12 mm probe the gap is .1 inch, and for
the 18 mm probe it is .12 inch. Note that for the 18 mm
probes the probe is made to be flush with the inside of the
housing.
After wiring the probe “The cable will have to be passed
through the opening provided on the conduit box,” line up a
gasket, the spacer, a gasket and the cover with the four
screw holes on the casting. Use the four screws and the four
lock washers to secure the conduit box, the gaskets and the
spacer to the housing. Use a tightening torque on the 10–32
screws equal to 25 inch-lbs.
On some models a 90 degrees elbow is used as an
enclosure. In this case, screw in the proximity probe until the
blue dye portion is lined up with the housing. Secure the
probe using the jam nut using the above tightening torque
values. Place a silicon sealer on the bottom of the spacer
and screw it to the probe. Tighten the spacer using the three
screws and lock washers provided. Use a tightening torque
20–25 inch-lbs. Screw on the conduit elbow. The wiring
elbow can be used as a junction box for the outgoing cable.
Follow all local and national electrical codes in wiring the
proximity switch
TYPE E, DI, AND TAF PILLOW BLOCKS EQUIPPED WITH
SPEED PICKUP:
Mount the bearing to the shaft using the instruction manual
that was provided with the bearing. Be sure to secure the
