Features:
- Accepts one high-speed pulsetach input at up to 125 kHz.
- Supports differential, open-collector, emitter-follower or single-ended signals.
- Conditions and isolates the pulse path before backplane processing.
The module accepts a high-speed pulse-train from a tachometer or compatible position sensor so the AutoMax control system can determine machine speed or position-related events.
Input conditioning accepts several electrical sensor forms, applies isolation and filtering, and presents the pulse information to the controller. Frequency is proportional to shaft or machine speed according to the installed transducer pulse count.
Confirm sensor output type, voltage, maximum frequency, cable shielding and pulse-per-revolution value before replacement. Mechanical speed limits are determined by the connected transducer and application.
Availability is reviewed against the exact 57C421 order identity and requested supply condition; manufacturer lifecycle status: Discontinued / Obsolete by OEM.
Verified resources for Reliance Electric 57C421:
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- The differential option supports stronger noise rejection over the documented cable distance. Single-ended or open-collector circuits require the correct bias, reference and grounding arrangement.
- Typical tasks include rotating-speed feedback, pulse counting, line synchronization and supervisory monitoring in coordinated drive or machine-control systems.
- Supports speed, count and synchronization functions in AutoMax applications.
- Accepts pulse trains from tachometers or compatible position sensors.
- Supports differential, emitter-follower, open-collector, and single-ended input forms.
- Provides one high-speed channel for speed or position-related events.
- Accepts TTL signals up to a maximum input level of 13.2 V DC.
- Processes pulse frequencies up to 125 kHz.
- Combined input filtering has a documented 250 kHz cutoff.
- Conditions and isolates pulses before transferring speed information to the controller.
- Supports cable runs up to 600 ft or 180 m.
- Provides 2500 V AC RMS isolation between field and logic circuits.