G&L MMC-A2, Hardware Manual

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Standalone MMC Control
G & L Motion Control Inc. MMC Hardware Manual 75
Figure 4-16: Encoder and Power Connections for Encoder Isolator
Table 4-33:
Encoder Specifications
Item Specification
Encoder Driver Required RS-422 differential
Recommended Encoder Drivers 7272, 75183, 8830, 75114, 9614,
26LS31 (or equivalent)
Differential Input Voltage Range 2.5 volts to 7.0 volts
Differential Input Current Range 2.5 ma (Input Voltage = 2.5 volts)
to 30ma (Input Voltage = 7.0
volts)
Input pulse width (minimum) 600 nanoseconds
Input frequency (maximum) on A or B
inputs from Quadrature output encoder 250KHz (1.0 MHz count rate,
using quadrature edges)
Input frequency (maximum) on A or B
inputs from Pulse output encoder 500KHz (500KHz count rate)
Power Supply
+5V
GND
A
A-
B
B-
I
I-
1
2
3
4
5
6
J1
J2
AUX I/O
AUX I/O
Single Point
Ground (SPG)
Encoder
Isolated Breakout Box
Control