1
DESCRIPTION
Application:
Any position monitoring application
where 2 alarm setpoints and a 6
digit LED display is needed. Such
as blade positioning, box making
and many other machine shop and
industrial applications.
Description:
Featuring 6 digits of bright,
7-segment LED displays, this unitl
is a position monitor which accepts
signal inputs up to 30 KHz. A 5
digit floating decimal scale factor
allows a readout in true engineer-
ing units. The unit has two, pro-
grammable alarm set points from -
99999 to 99999 and a selectable
start point. These setpoints con-
trol two 5 Amp relays. A two stage
panel lock prohibits menu changes
from unauthorized personnel.
Specifications:
Display
6 digit, .55" high, 7 segment, red
orange, LED.
Input Power:
24, 110, 220 VAC
±
15% or 12 to
15VDC.
Current: maximum 300 mA DC or
8.0 VA at rated AC voltage.
Output Power:
(AC powered units only) + 12VDC
@ 50mA unregulated -10 +50%
Temperature:
Ope32
°
F (0
°
C) to +130
°
F
(+54
°
C).
Storage:-40
°
F (-40
°
C) to +200
°
F
(93
°
C).
Memory:
EEPROM stores data for ten years
if power is lost.
Inputs:DC pulse input open or 0-1
VDC (low), 4-30 VDC (high),
30KHz speed max.
Reset:
Front Panel: resets display to view
(start) value.
Remote: 4-30VDC positive edge,
Resets display to view (start) value.
Lockout:
Unauthorized front panel changes
can be prevented by entering a
user selected, 5 digit code. The
lockout feature can be programmed
to lock the entire front panel or lock
the menu items and leave the pre-
sets and reset accessable. In ei-
ther mode the locked items can be
viewed but not changed.
Control Outputs:
2 each N.O. Relays - 5Amp @ 120/
240 VAC or 28 VDC. (N.C. Relay
contacts or NPN sink from 10 VDC
to .5 VDC @ 100 mA available with
solder jumpers). The output will
remain active when the display is
equal to or greater than the set
point. If the display falls below the
set point, the output becomes in-
active.
Set Points:
Two control set points are provided.
The set points can be programmed
for any number from minus 99999
to plus 99999. The position moni-
torl will recognize new set point val-
ues without the need to reset the
unit. The unit also has a starting
point which can be viewed or
changed by pressing the "view" but-
ton. When the reset is activated,
the display will reset to the view
(start) value.
Shipping Weight:
2 pounds.
TYPICAL APPLICATION:
The position monitor can be used in many position
applications. When two units are used, both X and Y axes
positions can be monitored. The application below in-
volves monitoring of the X axis only.
In this application the STOP position on a sheet
metal shear must be monitored. A quadrature encoder
was placed on the screw drive shaft. The Encoder outputs
100 pulses per revolution. Each revolution of the screw
drive equals a .15 inch movement of the STOP. To calcu-
late the scale factor simply divide 100 by .15 (100
÷
.15) =
666.66 pulses per inch. This would be the scale factor if
the display was to be read in inches. In this application the
STOP movement must be accurate to .01 inches. There-
fore the factor 666.66 must be divided by 100 (666.66
÷
100) = 6.6666 pulses per .01 inch.
The unit has two alarm set points which activate
two relays. The unit also has a programmable preset start-
ing point. At any time the preset start point can be viewed
or changed by pressing the view button. The two relay
outputs can be used to signal alarms when the desired
position has been reached.
This unit is the perfect solution for position moni-
toring applications where a low cost, scalable monitor is
needed
.
HOLLOW SHAFT
QUADRATURE ENCODER
CHANNEL A
CHANNEL B
+ DC (RED)
COMMON (BLK)
ELECTRICAL
CONNECTIONS
1
2
3
4
5
6
7
8
9
10
11
12
N.O.(N.C. / NPN)
COMMON
N.O.(N.C. / NPN)
COMMON
A INPUT
B INPUT
12V DC INPUT
-DC (GROUND)
RESET INPUT
NOT USED
A.C. INPUT
A.C. INPUT
POSITION
MONITOR
ENCODER
Содержание POSITROL PM2A3
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