Rockwell Automation 842E-CM EtherNet/IP Encoders Installation Instructions - Manual

Publication 10000481742 Ver 01
March 2013
Installation Instructions
842E-CM Integrated Motion on EtherNet/IP™
EtherNet/IP™ Absolute Encoder (with 1588 Precision Clock Synchronization)
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Description
The 842E-CM is an ultra-high resolution encoder with EtherNet/IP
interface with time synchronization for motion control. These
encoders provide 18-bit single-turn resolution and 30-bit multi-
turn resolution. The EtherNet/IP encoder is targeted for high
performance and reliability in harsh industrial environments.
Encoder includes an embedded EtherNet/IP switch to connect
additional E/IP capable product in series and/or support a Device
Level Ring (DLR) for Ethernet media redundancy.
Features
• EtherNet/IP with IEEE 1588 Precision Clock Synchronization
• Embedded switch
• Hardware/software IP address setting
• Resolution up to 30 bits
• Protection class up to IP67
• Simple and fast set up
• Device Level Ring (DLR)
• Solid and blind hollow shaft options
Typical Applications
• Packing machines
• Robotics
• Printing machines
• Motion Control on EtherNet/IP
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Specifications
Certifications
CE Marked for all applicable directives
NRTL mark (cTUVus) for UL 508
CAN/CSA C22.2.14-10
Electrical
Bus Connection EtherNet/IP IEC 61784-1
CIP Sync IEEE 1588 (IEC 61588, precision clock synchronization)
Transmission Rate 10/100 MBit/s
Transmission Medium Cat-5e cable
Code Type Binary
Operating Voltage Range 10…30V
Power Consumption 3.0 W
Resolution 262,144 (18 bit)
No. of Revolutions, max. 4,096 (12 bit)
Error Limits ±0.03°
Repeatability ±0.002°
Operating Current, max., no load;
10…30V supply 200 mA
Mechanical
Moment of Inertia
6.2 gcm 2 (solid shaft) of the rotor
35 gcm 2 (blind hollow shaft) of the rotor
Operating Speed
9,000 RPM (solid shaft), max.
6,000 RPM (blind hollow shaft), max.
Shaft Loading
Radial: 80 N max. (solid shaft)
Axial: 40 N max. (solid shaft)
Permissible Shaft Movement
Radial (static/dynamic): ± 0.3 / ± 0.05 mm [of drive element
(blind hollow shaft)]
Axial (static/dynamic): ± 0.5 / ± 0.1 mm [of drive element
(blind hollow shaft)]
Bearing Lifetime 3 x 10 9 revolutions
Angular Acceleration 5 x 10 5 rad/s², max.
Operating Torque
0.3 Ncm (solid shaft) @ 20 °C
0.6 Ncm (blind hollow shaft) @ 20 °C
Starting Torque
0.5 Ncm (solid shaft) at 20°C
0.8 Ncm (blind hollow shaft) at 20°C
Environmental
Housing Material Aluminum
Shaft Material Stainless steel
Operating Temperature [C (F)] -30… +85° (-22… +185°)
Storage Temperature [C (F)]  -40… +100° (-40… +212°)
Relative Humidity  90%
Shock  100 g/6 ms
Vibration  20 g/10…2000 Hz
Enclosure Rating Shaft IP65
Enclosure Rating Housing  IP67
Weight 0.2 kg (0.44 lb)
Standards EN 61000-6-2 and EN 61000-6-3 EMC
 Without packaging.
 To condensation not permitted.
 To DIN EN 60068-2-27.
 To DIN EN 60068-2-6.
 With mating connector inserted.