EDE12400 Просмотр технического описания (PDF) - Unspecified
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EDE12400 Datasheet PDF : 8 Pages
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E-Lab Digital Engineering, Inc.
EDE12400
Pin#
Pin Name
1 CLOCK
2 CW/CCW
3 HALF/FULL
4 RESET
5 ENABLE
6 CONTROL
7 GND
8 Vref
9 1V
10 OSC
11 SYNC
12 HOME
13 /B
14 B
15 /A
16 A
17 GND
18 0.5 Ohm Ground
19 Sense In 2
20 Sense Out B
21 Sense In 1
22 Sense Out A
23 MOTOR+
24 +5V
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Description
Step clock. An active low pulse on this input advances the motor one
increment. The step occurs on the rising edge of this signal.
Clockwise/Counterclockwise direction control input. Physical direction of
motor rotation also depends on connection of windings. Direction can be
changed at any time.
Half/full step select input. When high selects half step operation, when low
selects full step operation. One-phase-on full step mode is obtained by
selecting FULL when the translator is at an even-numbered state. Two-
phase-on full step mode is set by selecting FULL when the translator is at an
odd numbered position. (The home position is designated state 1).
Reset input. An active low pulse on this input restores the translator to the
home position (state 1, ABCD = 0101).
Chip enable input. When low (inactive) INH1,INH2,A,B,C, and D are
brought low.
Control input that defines action of chopper. When low chopper acts on
INH1 and INH2; when high chopper acts on phase lines ABCD.
Ground connection.
Reference voltage input for chopper circuit. A voltage applied to this pin
determines the peak load current. When using internal 0.5 Ohm current
sense resistors, do not exceed 1V (sets 2 Amps).
1V output voltage. May be used to feed a voltage divider circuit to set
Vref input voltage. Using this output to drive a potentiometer or other
voltage divider that sets Vref prevents (desirably) the possibility of sending
a voltage higher than 1V into Vref.
RC oscillator to set chopper rate. In ordinary operation this pin may be left
unconnected to use the internal RC oscillator. If multiple modules are to
be utilized and their chopper outputs are to be synchronized, this pin
should be grounded on all but one module. The module with the
ungrounded OSC pin provides the chopper clock to the other modules via
the SYNC pin.
Output of the chopper oscillator. In ordinary operation this pin may be left
unconnected. If an external chopper clock source is to be used it is
injected at this pin. If multiple modules must have their chopper
frequencies synchronized their SYNC pins should be connected.
Open collector output that indicates when the controller is in its initial state
(ABCD = 0101). The output transistor is open when the signal is active.
Motor phase 4 output drive signal. Connected to same coil as B.
Motor phase 3 output drive signal. Connected to same coil as /B.
Motor phase 2 output drive signal. Connected to same coil as A.
Motor phase 1 output drive signal. Connected to same coil as /A.
Ground connection.
Ordinarily connected to Ground if internal current sense resistors are to be
used. If external current sense resistors are used, leave this pin floating.
Input for load current sense resistor for coil across B and /B. For standard
operation connect to Sense Out B.
Output drive to load current sense resistor for coil across B and /B.
Input for load current sense resistor for coil across A and /A. For standard
operation connect to Sense Out A.
Output drive to load current sense resistor for coil across A and /A.
Motor power supply input. Maximum 46VDC.
Regulated +5V input.
Table One: Pin Functionality
2
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