Installation Instructions
Size 25 Absolute Encoder, Bulletin 845G
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
Electrical
Code Format Gray Code, Natural Binary, Binary Coded Decimal
(parallel); Gray Code (SSI)
Resolution
Counts per Rev. (CPR)
256 CPR (8 bit)
360 CPR (9 or 10 bit)
512 CPR (9 bit)
1000 CPR (12 bit BCD)
1024 CPR (10 bit)
2048 CPR (11 bit)
4096 CPR (12 bit)
8192 CPR (13 bit)
16384 CPR (14 bit)
32768 CPR (15 bit)
Accuracy ±1 bit
Frequency Response 16K words/sec
Power Requirements Determined by Catalog Number:
5V DC ±5% @ 150mA maximum
8-24V DC @ 150mA maximum
10-30V DC @ 150mA maximum
Output Drive Capability 16mA
Output Logic 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
Latch Command Standard with Natural Binary and BCD
Logic 0" = outputs active (DC common)
Logic 1" = outputs latched (+DC or open)
Direction Control Field selectable for increasing counts
(CW or CCW)
Reset Reset position value to zero (see note on page 3). Only
with shaft stationary.
Mechanical
Starting Torque
3.5 in.-oz. Typical [0.025 NDm]
Running Torque
3.5 in.-oz. Typical [0.025 NDm]
Shaft Loading Axial 20 lbs. [89 N]
Radial 40 lbs. [178 N]
Shaft Size 3/8 inch diameter [9.517mm] w/flat
Moment of Inertia 0.08 oz.-in.
2
maximum
Slew Speed 5000RPM
Environmental
Housing NEMA Type 4, 13, IP66 (IEC 529)
Temperature 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
Humidity 98%, Noncondensing
Shock 50g (11ms duration)
Vibration
20g (58-150Hz), 1.5mm displacement (10-58Hz)
Approximate
2lbs. (0.91k
)
Shipping Weight
.
.
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 — F3G 5 H C 1024 R
a b c d e f g
13 bit/0-81918192
4096
NPN Open Collector
24V DC Max.
Mounting
Configuration
Code Description
a
S English Servo
Square FlangeF
Power Supply
Code Description
8 8-24V DC
5V DC ±5%5
c
e
Output Configuration
Code Description
T 5V DC TTL NPN
C
Resolution
Code Description/Range
8 bit/0-2550256
f
9 or 10 bit/0-359 Î
0360
9 bit/0-5110512
10 bit/0-10231024
11 bit/0-20472048
12 bit/0-4095
d
Output Logic
Code Description
L
Low True Ë
High TrueH
Output Code Type
Code Description
D Binary Coded Decimal
(0360 & 1000 resolution only)
Natural BinaryB
b
S
SSI Output ÊÌÍ
10-30V DC
PushĆPull (7272) Ê
P
14 bit/0-16,383016K
15 bit/0-32,767032K
Axial 19ĆPin
g
Connector Options
Code Description
A
R Radial 19ĆPin
S
Axial 12ĆPin Í
T
U
Radial 12ĆPin Í
Axial 17ĆPin
A
10-30V DC Ê
12 bit/0-999
BCD only
1000
G 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.
