Chapter 1. Installation
3
General Specifications
P a r a m e t e r
S p e c i f i c a t i o n
Power
OEM-AT6400 PC Card ...........................................
5VDC @ 3.5A from the PC-AT bus
Status LED/fault detection........................................
Refer
to
Status LED in Chapter 2
Environmental
Operating Temperature ..........................................
32-122
°
F (0-50
°
C)
Storage Temperature...............................................
-22-185
°
F (-30-85
°
C)
Humidity ...................................................................
0-95%
non-condensing
Performance
Position Range .........................................................
±
2,147,483,648 steps
Velocity Range .........................................................
1-1,600,000
steps/sec
Acceleration Range..................................................
1-24,999,975
steps/sec
2
Stepping Accuracy ...................................................
±
0 steps from preset total
Velocity Accuracy ...................................................
±
0.02% of maximum rate
Velocity Repeatability .............................................
±
0.02% of set rate
Motion Algorithm Update Rate................................
2 ms
Calculation to determine contouring deviation from an arc
(due to straight-line approximation to a curve):
Error in steps =
(
Vp
∗
t
2
)
2
r
Where:
Vp
= steps/sec,
r
= radius in steps,
t
= system update period (2 msec)
Inputs
Home, POS/NEG Limits, Trigger...........................
HCMOS compatible*; internal 6.8 K
Ω
pull-ups to AUX-P terminal (connect to in5V
or external power supply); Voltage range is 0-24V.
6 General-Purpose Programmable .......................
HCMOS compatible* with internal 6.8 K
Ω
pull-ups to IN-P terminal (connect to in5V
or external power supply);. Voltage range = 0-24V.
Outputs
4 General-Purpose Programmable ........................
Open collector output with 4.7 K
Ω
pull-ups. Can be pulled up by connecting OUT-P to +5V,
or to user-supplied voltage of up to 24V. Max. voltage in the OFF state (not sinking
current) = 24V, max. current in the ON state (sinking) = 30mA..
Step, Direction..........................................................
Differential line driver output. Signal high
≥
3.5VDC @ +30mA, signal low
≤
1.0VDC @
-30mA.
+output
for each differential driver is active high;
-output
for each driver is active
low. Step pulse width range is 0.3
µ
s to 20
µ
s (depends on the value of the
PULSE
command–default is 0.3
µ
s).
+5V Output................................................................
+5V terminals are available on the 60-pin connector. Load limit (total load for all I/O
connections) is typically 1.0A , and depends on the internal power supply of your PC.
* HCMOS-compatible switching voltage levels: Low
≤
1.00V, High
≥
3.25V.
TTL-compatible switching voltage levels: Low
≤
0.4V, High
≥
2.4V.
NOTE: The OEM-AT6400 does not have any optical isolation
circuity for the Input/Output connections. See Appendix A for
information on reducing electrical noise.
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