• PG Electronics

Differential Encoder Output Converter

PG Electronics offers a Differential Encoder Output Converter, a six to three channel converter. Incremental encoder users sometimes pose problems when their counter or counter module in PLC have provision to accept only 3 or 2 encoder inputs whereas the encoders have 6 channel differential (k1, k1 -, k2, k2-, k0, k0-,) output. The six to three channel converter Type IN – NBS 3 converts the differential output at users’ end to cleaner 3 channel output. This converter is quite relevant when 5 V level or TTL output is required. The encoders suitable for 5 V DC supply usually have TTL compatible, differential output RS 422 compatible. If the user utilises only 3 channels out of 6 it does not match the requirement and results in damaging the output components of the encoder. Besides, the system is vulnerable to noise when using only three (k1, k1-, k2) or two (k1, k2) channels at 5 V level. Using the interface card Type IN – NBS 3 obviates this problem and what more, one can use longer cable lines when the recommended circuit is used. The unit is DIN rail mountable. Similar unit type IN – NAS 3 suitable for 10-30 V DC could be utilized for encoder of this voltage level.