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Appendix B Accessories|
Revision Nov. 2008, VLE1, SW V1.03 B-25
When PIN 2 and PIN 3 are set to 0, the input signals (A-/A and B-/B) of PG card should
be square wave and A/O-/A/O and B/O-/B/O are the outputs of frequency divider.
When PIN 2 is set to 0 and PIN 3 is set to 1, the input signals (A-/A and B-/B) of PG card
should be square wave and B/O-/B/O is the indication of phase A and B. (EX: LOW
means A leads B and HIGH means B leads A). A/O-/A/O is the output of frequency
divider.
When PIN 2 is set to 1 and PIN 3 is set to X, B-/B should be the input signal of direction
indication. (EX: when B-/B is LOW, it means that A leads B. When B-/B is HIGH, it means
that B leads A. A-/A is a square wave input. B/O-/B/O and B-/B should be input
synchronously.
A/O-/A/O is the output of frequency divider.
Z/O-/Z/O of the PG card will act by the input signal of Z-/Z and don’t have the function of
frequency divider.
When changing the denominator of the frequency divider or input/output type, it needs to
clear the counter value by clock reset bit (PIN4) before operation. Please set the switch to
1 after reset.
B.8.2 EMVL-PGABO
3. Terminals descriptions
Terminal Symbols Descriptions Specifications
VP
Power source of encoder
Voltage: +12V±1V
Current: 200mA max.
0V
Power source common for
encoder
Reference level of the power of
encoder
TB1
A,
, B,
, Z,
A B Z
Incremental line driver input
Open collector signal input.
Max. bandwidth is 100kHz
Please notice that
,
,
A B Z
and
0V should be short circuit.