8
Epsilon Eb and EN Drives Reference Manual
• Pulse frequency > 250 kHz
• Pulse command cable length > 25 feet
• Noisy electrical environments
Differential input circuit specifications:
Input frequency maximum
2 Mhz
Input device:
AM26C32
Input impedance
12 Kohms each input
Maximum voltage applied to input pins (A, A/) or (B, B/ )
Single Ended (referenced to 0V drive logic)
+/-10V
Differential (referenced to mating differential input)
+/-10V
Maximum common mode voltage
+/-7 V
Minimum differential voltage required
200 mV
Input voltage hysteresis
60 mV
Single ended input circuit specifications:
Single ended input specifications:
1 MHz maximum input frequency
Internal 330 ohm pull-up to 5 Volt (non-isolated)
1.5 Volt low level
3.5 Volt high level
Output driver requirements:
15 mA sinking (open collector)
5 Volt capacity
ECI-44 Terminal
Command
Connector Pin #
Pulse-Direction
Signal
Pulse-Pulse
Signal
Pulse Quadrature
Signal
Sync Enc In “A”
27
Pulse
Pulse +
A
Sync Enc In “A/”
41
Pulse/
Pulse +/
A/
Sync Enc In “B”
26
Direction
Pulse -
B
Sync Enc In “B/”
40
Direction/
Pulse -/
B/
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