Precision Pulse Amplification for Speed Measurement
This module amplifies low-level pulse signals from speed sensors and encoders. It delivers clean, conditioned square-wave outputs for frequency measurement systems. Many facilities rely on this amplifier for turbine and motor speed monitoring. The unit ensures reliable signal transmission over long cable runs.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HIEE320639R1 HI024049-313 LT 8978B V1 |
| Dimensions | 270 mm × 45 mm × 185 mm (W × H × D) |
| Weight | 0.75 kg |
| Power Supply | 24 V DC ±10% |
| Power Consumption | 5 W typical |
| Input Channels | 2 independent pulse inputs |
| Input Signal Type | Magnetic pickup, proximity probe, encoder |
| Input Voltage Range | ±10 V to ±100 V (differential) |
| Input Frequency Range | 0 Hz to 50 kHz |
| Input Impedance | ≥100 kΩ |
| Trigger Threshold | Adjustable (0.1 V to 5 V) |
| Hysteresis | 5% of threshold (fixed) |
| Output Channels | 2 amplified square-wave outputs |
| Output Voltage | 0 V to 24 V DC (open-collector) |
| Output Current | 50 mA maximum per channel |
| Pulse Width | Maintains input duty cycle |
| Response Time | ≤5 µs |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -25°C to +85°C |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Status Indicators | 2 Power LEDs, 2 Signal Present LEDs |
| Terminal Type | 37-pin D-sub connector and screw terminals |
| Certifications | CE, UL |
Input Circuit Design and Sensor Compatibility
This amplifier accepts differential signals from magnetic pickups and proximity probes. It handles input voltages ranging from ±10 V to ±100 V. The adjustable trigger threshold accommodates various sensor output levels. Hysteresis of 5% prevents false triggering from electrical noise.
Output Stage and Signal Conditioning
The module produces clean square-wave outputs for frequency counters and control systems. Two open-collector outputs drive loads up to 50 mA each. The amplifier preserves the input signal’s duty cycle through its conditioning path. Output voltage reaches 24 V DC for direct interface with digital inputs.
Power Supply and Energy Consumption
The unit draws just 5 W from a 24 V DC source. Internal voltage regulators maintain stable operation despite supply fluctuations. The amplifier contains no onboard energy storage devices. This straightforward power design enhances long-term reliability.
Mechanical Construction and Physical Dimensions
This board measures 270 mm wide with a slim 45 mm profile. Weighing 0.75 kg, the module installs easily in standard ABB racks. A 37-pin D-sub connector provides the primary signal interface. Screw terminals offer additional flexibility for field wiring connections.
Adjustable Trigger and Configuration Flexibility
Engineers can set the trigger threshold from 0.1 V to 5 V using onboard potentiometers. This adjustment optimizes the amplifier for different sensor types. Correct threshold setting ensures reliable pulse detection under varying speed conditions. Field configuration requires no special programming tools.
Diagnostic Feedback and Status Indication
Two power LEDs confirm the presence of supply voltage. Two signal present LEDs indicate active input pulses on each channel. These indicators help operators verify sensor health and wiring integrity. Quick visual checks reduce commissioning and troubleshooting time.
Certifications and Quality Assurance
The HIEE320639R1 HI024049-313 LT 8978B V1 holds CE and UL certifications for industrial applications. These approvals confirm compliance with international safety and EMC standards. Each module undergoes functional testing before shipment. This rigorous process ensures dependable pulse amplification in critical systems.
Details
| Weight | 0.75 kg |
|---|---|
| Dimensions | 270 × 45 × 185 mm |
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