Rockwell Automation 845G Absolute Encoder, Size 25 User Manual

Rockwell Automation Equipment

Installation Instructions

Size 25 Absolute Encoder, Bulletin 845G

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

Specifications

БББББББББББББББББ

Electrical

ББББББ

Code Format

ББББББББББББ

Gray Code, Natural Binary, Binary Coded Decimal

(parallel); Gray Code (SSI)

ББББББ

Resolution

Counts per Rev. (CPR)

ББББББ

256 CPR (8 bit)

360 CPR (9 or 10 bit)

512 CPR (9 bit)

1000 CPR (12 bit BCD)

1024 CPR (10 bit)

БББББББ

2048 CPR (11 bit)

4096 CPR (12 bit)

8192 CPR (13 bit)

16384 CPR (14 bit)

32768 CPR (15 bit)

ББББББ

Accuracy

ББББББББББББ

±1 bit

ББББББ

Frequency Response

ББББББББББББ

16K words/sec

ББББББ

Power Requirements

ББББББББББББ

Determined by Catalog Number:

5V DC ±5% @ 150mA maximum

8-24V DC @ 150mA maximum

10-30V DC @ 150mA maximum

ББББББ

Output Drive Capability

ББББББББББББ

16mA

ББББББ

Output Logic

ББББББББББББ

Parallel Gray, Natural Binary or Binary Coded Decimal

(BCD)

Logic 0" = 0.0 to 0.6V DC

Logic 1" = 3.5 to 5V DC (TTL)

Logic 1" = 24V DC maximum

(Open Collector)

SSI RS-422 compatible

ББББББ

Latch Command

ББББББББББББ

Standard with Natural Binary and BCD

Logic 0" = outputs active (DC common)

Logic 1" = outputs latched (+DC or open)

ББББББ

Direction Control

ББББББББББББ

Field selectable for increasing counts

(CW or CCW)

ББББББ

Reset

ББББББББББББ

Reset position value to zero (see note on page 3). Only

with shaft stationary.

БББББББББББББББББ

Mechanical

ББББББ

Starting Torque

ББББББББББББ

3.5 in.-oz. Typical [0.025 NDm]

ББББББ

Running Torque

ББББББББББББ

3.5 in.-oz. Typical [0.025 NDm]

ББББББ

Shaft Loading

ББББББББББББ

Axial 20 lbs. [89 N]

Radial 40 lbs. [178 N]

ББББББ

Shaft Size

ББББББББББББ

3/8 inch diameter [9.517mm] w/flat

ББББББ

Moment of Inertia

ББББББББББББ

0.08 oz.-in.

maximum

ББББББ

Slew Speed

ББББББББББББ

5000RPM

БББББББББББББББББ

Environmental

ББББББ

Housing

ББББББББББББ

NEMA Type 4, 13, IP66 (IEC 529)

ББББББ

Temperature

ББББББББББББ

0°C to +85°C (+32°F to +185°F)ĊOperating

-20°C to +85°C (-4°F to +185°F)ĊMax Working

-40°C to +100°C (-40°F to +212°F)ĊStorage

ББББББ

Humidity

ББББББББББББ

98%, Noncondensing

ББББББ

Shock

ББББББББББББ

50g (11ms duration)

ББББББ

Vibration

ББББББББББББ

20g (58-150Hz),

1.5mm displacement (10-58Hz)

ББББББ

Approximate

ББББББББББББ

2lbs. (0.91kg)

ББББББ

Approximate

Shipping Weight

ББББББББББББ

2lbs. (0.91kg)

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.

Selection

845G — F 3 G 5 H C 1024

13 bit/0-8191

8192

4096

NPN Open Collector

24V DC Max.

Mounting

Configuration

Code

Description

English Servo

Square Flange

Power Supply

Code

Description

-24V DC

5V DC ±5%

Output Configuration

Code

Description

5V DC TTL NPN

Resolution

Code

Description/Range

8 bit/0-255

0256

9 or 10 bit/0-359 Î

0360

9 bit/0-511

0512

10 bit/0-1023

1024

11 bit/0-2047

2048

12 bit/0-4095

Output Logic

Code

Description

Low True Ë

High True

Output Code Type

Code

Description

Binary Coded Decimal

(0360 & 1000 resolution only)

Natural Binary

SSI Output ÊÌÍ

10-30V DC

PushĆPull (7272) Ê

14 bit/0-16,383

016K

15 bit/0-32,767

032K

Axial 19ĆPin

Connector Options

Code

Description

A
R

Radial 19ĆPin

Axial 12ĆPin Í

Radial 12ĆPin Í

Axial 17ĆPin

10-30V DC Ê

12 bit/0-999

BCD only

1000

Gray Code

Ê PushĆPull or SSI output can only be ordered with 10-30V DC power supply.

Ë Not available with pushĆpull and SSI output. Output logic inverted.

Ì SSI available with Gray Code output only.

Í SSI only available with 12Ćpin connector.

Î Excess 76 used for 9 bit gray code. BCD is 10 bit.