Rockwell Automation 845H Size 25 Incremental Encoder Installation Instructions - Manual

1
Installation Instructions
Size 25 Incremental Encoder, Bulletin 845H
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
Electrical
Code Format Incremental, 2 channels with zero index
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
8-24V DC @ 150mA maximum
Frequency
Response
Data: 210kHz
Zero index: 210kHz
Operating Speed
(Data)
(210kHz x 60)/pulses per rev. = RPM or 6000 RPM,
whichever is lower
Resolution Up to 5000 PPR on code disk
Output Drive
Capability
PNP current source = 20mA;
NPN current sink = 20mA;
Differential line driver = ±20mA;
NPN open collector = 20mA
Mechanical
Starting & Running
Torque
2.5Ncm typical [3.5inĆoz]
Moment of Inertia 15gcm (2.1 x 10 -4 ozĆin-sec 2 )
Slew Speed 6000 RPM
Shaft Loading
(3/8I & 10mm Dia.)
Axial 89N [20lbs] (10lbs 5000 PPR);
Radial 178N [40lbs] (20lbs 5000 PPR)
Shaft Size 6mm, 10mm, 6.4mm [1/4in] 9.517mm [3/8in] diameter
Environmental
Housing NEMA Type 4,13, IP66 (IEC 529)
Temperature 0°C to +60°C (+32°F to +140°F)Ċoperating
-25°C to +90°C (-13°F to +194°F)Ċstorage
Humidity 98%, noncondensing
Shock 50g (11ms duration)
Vibration 20g (4 to 2000Hz)
Approximate Ship
Weight
0.91kg (2lbs)
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
OffĆSet
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
PreĆWired Cables 845-CA-*-*
Mating Connectors 845-7P, 845-10P
Differential Encoder Buffer Board 845-BB
*See the Sensors catalog for selection.