Rockwell Automation 1398 H-Series Brushless Servo Motor Manual - Manual (Page 9)

Encoder Data
Encoders are factory aligned and must not be adjusted outside the factory.
Encoder Outputs
Encoder Phase-to-Neutral and Phase-to-Phase Waveforms
ENCODER SPECIFICATIONS
Line Count 2000 (1)
Supply Voltage 5 VDC
Supply Current 250 mA max.
Line Driver 26LS31
Line Driver Output TTL
Index Pulse H-2000 and H-3000 Series
when key faces 180 o ±10 away
from the connectors
H-4000, H-6000 and
H-8000 Series when key faces
the connectors (0 o ±10)
(1) Standard line count before quadrature
Logic “1”
Logic “0”
A
B
I
I
B
A
90°±22.5
-180°
ANALOG SIGNAL
PHASE - NEUTRAL BACK EMF
-150° -120° -90° -60° -30° 0° 30° 60° 90° 120° 150° 180° ELECTRICAL DEGREES
INDEX 0°INDEX 0±2INDEX 0°
R - NEUTRAL
-180° -150° -120° -90° -60° -30° 0° 30° 60° 90° 120° 150° 180° ELECTRICAL DEGREES
INDEX 0°INDEX 0±2INDEX 0°
T - R R - S S - T
LOGIC 1
LOGIC 1
LOGIC 1
LOGIC 0
LOGIC 0
LOGIC 0
PHASE - PHASE BACK EMF
HALL A
HALL B
HALL C
NOTE: Hall and ABS signals are in electrical degrees.
For 4 pole commutation, 360° mechanical = 720° electrical.
For 6 pole commutation, 360° mechanical = 1080° electrical.
For 8 pole commutation, 360° mechanical = 1440° electrical