Dear All,
We have two incremental encoder types with two different driver ICs (AM26LS31C VS MC3487)
Please see below for my explanation of the problem;
1. First Encoder : X Manufacturer and its' driver interface IC is AM26LS31C
2. Second Encoder: Y Manufacturer and its' driver interface IC is MC3487
3. The motor driver encoder receiver side is the same machine for both encoders and the motor receiver IC is MC3486
4. When I plug the encoders to the motor driver.
- The encoder with MC3487 is working with no error
- The encoder with AM26LS31C is working for half an hour and then giving some connection errors.
5. I compared propogation delay times of MC3487 and AM26LS31C. The delay times are nearly same except tPZL(Output enable time to low level) MC3487: 30nsn and AM26LS31C: 37-45nsn. Do you think that this difference make the connection errors.
6. Do you know any major difference between AM26LS31C MC3487. I only found some small difference like below
7. If below explanations is not clear for you Please answer this simple question. Can AM26LS31C driver IC interface to MC3486 receiver IC with no error (Working frequency is : 200-300 kHz)
waiting for your urgent replies
Ertan
