Sensor Wiring Systems – Limit Style
AC 2-Wire
DC 3-Wire
AC/DC 2-Wire
Altech Corp.®• 35 Royal Road • Flemington, NJ 08822-6000 • Phone (908) 806-9400 • Fax (908) 806-9490 69
LIMIT STYLE INDUCTiVE
PROXIMITY SENSORS
The Limit Style Inductive Pr oximity
Sensor featur es a housing with a
similar outline of a mechanical Limit
Switch which it has r eplaced in
many applications. All Altech Limit
Style models ar e 41mm (1.61 in.) x
40mm (1.57 in.) x 121 mm (4.76 in.).
The Altech V ersa Pr ox®construction
features a rugged design that is
capable of moving the sensing
head into 17 unique positions. Once
the positioning is completed, the
V ersa Pr ox®can be snapped and
locked into position with no scr ews.
For connecting wiring to the Versa
Prox®, the unit separates once the
locking mechanism is disengaged,
and a terminal strip is available for
connections. The hole opening is a
threaded 1/2” 14NPT. Please see
page 70 for detailed instruction for
adjustments.
The V ersa Pr ox®has 2 LED and
3 LED models, they have pr ogram-
mable, Normally Open or Normally
Closed outputs, and both Flush or
Non-Flush models ar e available.
All sensors meet IP67 (NEMA
1,3,4,6,12,13) pr otection levels.
FLUSH MOUNT SENSORS
Flush Mounted Sensors have elec-
tromagnetic fields concentrated
directly in fr ont of the sensing head
and may be mounted dir ectly into
metal mounting brackets or embed-
ded directly into metal without caus -
ing a false output. Figure 9 illus-
trates that on Limit Style sensors
there should be at least the sensor
width separating adjacent sensors.
Also, no non-target metal should be
less than 3 times the sensing dis-
tance Sn directly acr oss the sensor.
Two sensors directly acr oss from
each other should be gr eater than
6 times the sensing distance Sn.
Sensing Distances – A C, DC, A C/DC Limit Style Pro ximity Sensors
Type Voltage Flush* P artially Flush* Non-Flush*
Versa Pro x®AC, DC , A C/DC 20 40
Standard A C, DC 15 40
W eld Immune A C, DC 15 25
Analog DC 10-20
*All Sensing Distances in mm.
Operating Voltages – Limit Style
A C 20 - 250
DC 10 - 30 10 - 60
A C/DC 20 - 250
Operating Current– Limit Style
A C 500 mA 500 mA
DC 120 mA 400 mA 5 mA
A C/DC 400 mA
Fig.9
FLUSH MOUNT INSTALLATION