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31
462
-
-
+
+
+5V
+5V
+5V
C
Q
D Flip-Flop
Pin 8 Sense A
Pin 21 Sense B
PIN 10 Enable
P
D
I n t e r f a c i n g t h e L o g i c I n p u t s
The inputs to the IB462H are internally pulled up to the +5VDC supply.
Figure 1.7.3 shows the inputs and their associated pull up resistor values. See
Section 1.2: Hardware Specifications,
for input tolerance.
When interfacing to the IB462H logic inputs an open collector output is
recommended.
I n t e r f a c i n g t h e S e n s e A & B O u t p u t s
These outputs, located on pins 8 (Sense B) and 21 (Sense A) allow monitoring
of the output current waveform. They can be compared with a user defined
trip reference signal for the purpose of per phase over current protection.
Figure 7.4 below illustrates a circuit that can be used to accomplish this.
Figure 1.7.4 Over Current Trip Circuit
Figure 1.7.3: Internal Input Pull-up Resistor Values
RESET
ENABLE
STEP CLOCK
HALF/FULL STEP
+5 VDC INPUT
DIRECTION
1
2
3
4
5
6
7
8
9
+5V
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