Rockwell Automation 42DR Intrinsically Safe Sensor - Manual

Installation/Configuration Instructions for 42DR
Intrinsically Safe Sensor
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
Normal Operation Requirements
Voltage Supply 13--29.5V DC
Supply Current 26mA max (output energized) at 13V DC
30mA max (output energized) at 29.5V DC
Response Time 1ms
Dual Outputs 1 NPN open collector (current sink)
1 PNP open collector (current source)
Output Ratings 20mA, 29.5V DC maximum
Turn On Pulse Suppression Yes
Light/Dark Energized Option Yes
Reverse Polarity Protection Yes
Output Overvoltage
Protection w/ Barriers
Yes
Field of View Type 42DRU Reflex 2.5
Type 42DRP Proximity 3
Sensitivity Adjustment Selectable by LOW (L)—HIGH (H) switch.
Covers full range of operating distances.
Ambient Temperature --40F to 150F (--40C to 65C)
Relative Humidity 90%
Rated Operating Distances All operating distances are with LOW (L)—
HIGH (H) switch in the HIGH (H) position.
42DRU- 5500 3 Dia. Reflector #92--39 1 to 30
1.25 Dia. Reflector #92--47 1 to 20
0.625 Dia. Reflector #92--46 1 to 15
42DRU- 5700 3 Dia. Reflector #92--39 6 to 15
1.25 Dia. Reflector #92--47 6 to 8
42DRP- 5500
White Paper
Distance Discrimination Range
Short Range (SR) Long Range (LR)
1 5
5 to 16 16 to 5
Distance differential between surface to be detected and background is defined
as the increase in distance required to de-energize the output, measured from the
point of energization:
Min. differential 10% 6 to 16
Min. differential 20% 2 to 5
42DRA- 5500 Operating distance depended on the choice
of lens or Fiber Optic Cable. See Bulletin
PA- 8306, PA- 8307, and PA- 8401.
Attention: Installation in hazardous environment
locations shall be made according to
ANSI/ISA -- RP 12.6 and other applicable
codes and standards.
!
Features
S For use in Class I, II, III; Division 1, 2; Group A, B, C, D, E,
F, G hazardous locations with Intrinsic Safety Zener Diode
Barriers.
S Reflex, polarized reflex, proximity, and special function
control models.
S Rated operating ranges
-- Reflex 1 to 30 (0.03m to 9m)
-- Polarized Reflex 6 to 15 (0.15m to 4.5m)
-- Proximity 0 to 5 (0 to 1.5m).
S Quick-Disconnect (QD) reduces downtime. No disruption of
alignment or wiring.
Features (continued)
S Photohead and terminal base are specially keyed to
prevent improper installation of non-intrinsically safe
equipment in a hazardous location.
S Terminal base for input voltages 13 to 29.5V DC eliminates
needs for separate junction box.
S Entity approval:
-- Vmax = 29.5V
-- Imax = 107mA
-- Ci = 0F
-- Li = 0H
Attention: These parameters must be adhered to. If
not, injury may be caused to person or
property.
!
S Control input parameters
-- Supply voltage 13 to 29.5V DC
-- Supply current, 26mA max. at 13V DC, 30mA max. at
29.5V DC
S Plug-in Photohead contains functional electronics and
optics.
S Thick film microcircuitry for quality and reliability.
S Adjustable input sensitivity.
S RF interference protected.
S No false turn-on pulse.
S Synchronous detection circuitry avoids ambient
interference.
S Switch selection for light or dark operation.
S Dual open collector outputs provide current sink (NPN) and
current source (PNP) capabilities.
-- Load voltage 29.5V DC max.
-- Load current 20mA max.
S Response Time: 1ms
S LED alignment indicator: Visible 360
S NEMA 4X corrosion resistant, high impact housing.
S UL Listed.
Attention: Substitution of components may impair
intrinsic safety.
!
Why Intrinsically Safe
Explosion prevention is a prime consideration in plants and facilities containing
hazardous atmospheres where “explosion-proof” housings are used.
The main fault with the “explosion-proof” housing system is that a single human
error could create a light explosion probability. Such occurrences as, failing to
tightly replace covers on “explosion-proof” housings, failing to shut off the power
before removing the cover of such a housing, and damaging the machined
surfaces of such covers are all prime examples.
Intrinsically Safe systems are now recognized as a more highly desirable
means of providing automated control functions in explosive environments. The
technique relies on the inherent parameters of electronic circuits, so that no
energy can be released under normal or abnormal operating conditions, of
sufficient magnitude to ignite a specified atmospheric mixture.