Rockwell Automation 847A_B Hollow Shaft Incremental Encoders - Manual (Page 2)

2
Specifications
Electrical
Code format Incremental
Two channels with zero index
Signal options,
clockwise rotation viewed from
shaft end A-leads-B, 180° marker gated with A
or
B-leads-A, 180° marker gated with BN
Signal phase relation 90° ± 22° channels
Symmetry 40…60%
Supply current 50 mA
Frequency response 4.5…5.5V line driver output: 820 kHz
8…30V line driver output: 820 kHz
Open collector: 150 kHz
Resolution 1...65536 pulses/revolution
Load current 30 mA for all output types
Output drivers 4.5…5.5V line driver - IC HD2
8…30V line driver - IC HD2
Open collector - 7406
Electrical protection Reverse polarity and short circuit for
all output types
Cable outer diameter 0.25 in (6.2 mm)
Cable type 300V, 105 °C, 26 AWG, 9-conductor
with overall braided shield, UL AWM
type 20327 for use in fixed (non-
flexing) installations; RoHs compliant.
Cable bend radius Minimum 5x outer diameter
Mechanical
Maximum operating speed 6,000 RPM
Angular acceleration 500,000 radians/s²
Moment of inertia 40 g•cm²
Startup torque at 20 °C (68 °F) 0.8 N•cm
Operating torque at 20 °C (68 °F) 0.6 N•cm
Permissible shaft movement
[mm (in.)] Radial
Static: ± 0.3 (0.012)
Dynamic: ± 0.05 (0.002)
Axial
Static: ± 0.5 (0.02)
Dynamic: ± 0.1 (0.004)
Hollow shaft diameter 3/8 in. (9.5 mm) or 1/2 in. (12.7 mm)
Approximate weight [kg (lb)] 0.16 (0.35) with M12 connector
MTTFd (EN ISO 13849-1) 330 years
Mounting Instructions
1. Using a 5/64-in. Allen wrench, loosen the screw on the
clamping ring.
2. Slide the encoder onto the mating shaft until the flex
mount rests on the machine surface.
The encoder should slide freely onto the shaft; if not, do
not force. Check the shaft for interferences such as
gouges, burrs, rust, or size.
If mounting holes already exist, proceed to step 6.
3. Hold encoder firmly and mark the mounting holes.
4. Mount the encoder with #4-40 (or equivalent) screws.
5. Slide the encoder back onto the shaft until the flex
mount rests on the machine surface.
6. Attach the encoder with #4-40 (or equivalent) screws.
7. Tighten the clamping ring screw to 8 in-lb.
Environmental
Enclosure rating per IEC 60529 Shaft: IP 65
Housing, connector version with
mating connector installed:
with blind hollow shaft: IP67
with through hollow shaft: IP65
Housing, cable version:
with blind hollow shaft: IP67
with through hollow shaft: IP65
Temperature -30…80 °C (-22...176 °F) operating
-40…100 °C (-40...212 °F) storage
Relative humidity 90% non-condensing
Shock 100 G/11 ms duration
Vibration 30 G/10…2,000 Hz
EMC EN 61000-6-2 and EN 61000-6-3
(M12 connector)
Housing material EN AC-47100 die-cast aluminium
Housing finish Powder coat paint, color RAL 9005,
Pantone black C (jet black)
Flange material 6061-T6 aluminium
Shaft material SAE 303 stainless steel
Certifications UL Listed, RoHS compliant
CE Marked for all applicable directives
Make sure mating shaft is chamfered and
grease-free. IMPORTANT
Do not stress the flex mount while tightening
the screws. IMPORTANT