Electro Cam PS-4456 Absolute Gray Code Encoder - Manual (Page 6)

Specifications
6
† See page 7 for sinking/sourcing definitions
The 8 Bit Gray Code Encoder Output Chart ( Figure 6) shows the transitions of each of the 8 bits as the encoder rotates
from 0 to 360 degrees. The output bits are phased so that only one bit changes state at each of the 256 increments.
The pulse disc which operates bit 0 (least significant) has 64 uniformly spaced slots, bit 1 has 32 uniformly spaced
slots, bit 2 has 16 uniformly spaced slots, and so on. The 8 bit output of the encoder is always one of the 256 bit
patterns shown in the table on page 4
(Figure 2) and always represents the current position of the encoder shaft. For
this reason, the control cannot get out of sync with the encoder. High speed count cards that use incremental encod-
ers are NOT absolute and require marker pulses, or other reference signals, for position synchronization.
Figure 6
Electrical Sourcing † Sinking †
Input Voltage 12 - 30 VDC 12 - 30 VDC
Output Voltage 12 - 30 VDC 3 - 30 VDC
Output Current (each bit) 50 mA 50 mA
Output Logic Type High True Low True or High True
General NEMA 12 NEMA 4X
Ambient Temp. 0 - 60 Degrees C 0 - 60 Degrees C
Enclosure JIC - 16 Ga Steel JIC - 16 GA Stainless
Shaft Dia. / Material 3/4" Stainless Steel 3/4" Stainless Steel
Bearings 3/4" Sealed Ball Bearing 3/4" Double Sealed Ball
Conformal Coating Component Side of PCB Both Sides of PCB