Rockwell Automation 845T Size 20 Incremental Encoder, Installation Instructions - Manual

1
Installation Instructions
Size 20 Incremental Encoder, Bulletin 845T
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
Electrical
Code Format Incremental (A, AB or ABZ channels)
Quadrature 90 ° ±22°
Channel A leads B CCW
Symmetry 50% ±10%
Zero Index Channel Gated 1/2 cycle
Power
Requirements
Determined by catalog number:
5V DC ±5% @ 150mA maximum
11--20V DC @ 150mA maximum
24V DC @ 150mA maximum
Frequency
Response
Data: 210kHz
Zero index: 210kHz
Operating Speed
(Data)
(100kHz x 60)/pulses per revolution = RPM or 15,000
RPM, whichever is lower
Resolution Up to 3000 PPR on code disk
Output Drive
Capability
Push-Pull Single Ended Driver = ±20mA
Differential line driver = ±20mA
Mechanical
Starting Torque 2.5Ncm typical [3.5in-oz]
Running Torque 2.5Ncm typical [3.5in-oz]
Slew Speed 15,000 RPM
Shaft Loading Axial: 359N [80lbs]
Radial: 359N [80lbs] (10mm, 3/8in shafts)
180N [40lbs] (6mm, 1/4in shafts)
Shaft Size 6mm, 10mm, 6.4mm [1/4in], 9.517mm [3/8in] diameter
Environmental
Housing NEMA Type 4, IP66 (IEC 529)
Temperature 0 °C to +60°C(+32°F to +140°F )—operating
--25 °C to +90°C (--13°F to +194°F)—storage
Humidity 98%, noncondensing
Shock 50g (11ms duration)
Vibration 20g (5 to 2000Hz)
Approximate Ship
Weight
0.44kg (14oz)
ATTENTION: The shielded cables, output devices,
and power supplies must be properly grounded. All
National Electric Code and applicable local codes
and ordinances must be observed when wiring the
system.
Flexible Shaft Couplings
Angle
Parallel
Off-Set
ATTENTION: Rigidly coupling the encoder shaft
to the machine shaft
will cause a failure in either
the bearings of the encoder or the bearings of the
machine shaft.
Accessories
Description Part Number
High Performance Flexible Coupling 845--FC--*--*
Measuring Wheels 845--MW--A--*
Servo Clamps 845--SC
Pre-Wired Cables 845--CA--*--*
Mating Connectors 845--6P, 845--7P, 845--10P
Differential Encoder Buffer Board 845--BB
*See Sensor catalog for selection.