The SCMVAS (Signal Conditioning Modular Voltage Attenuator System) is an analog signal conditioning system designed to safely monitor and accurately measure voltage potentials up to 460VAC (1300V peak-to-peak). These high level voltages are typically found in industrial applications such as induction heaters or electric-motor drive controllers. The system reduces the input signal to a level suitable for interface to data acquisition systems, while at the same time providing various filter characteristics and 1500Vrms isolation.
For each channel of analog input, an attenuator module, SCMVAS-M, pre-conditions the signal which is then filtered, isolated, and converted to a high-level voltage output using an SCM5B30-07 or SCM5B40-07 module. The SCM5B30-07 module with a 4Hz bandwidth is recommended for common 50/60Hz signals low in harmonics where the user is interested in measuring only AC voltage. The attenuator and signal conditioning modules have excellent stability over time and do not require recalibration. Overall system accuracy is ±0.06%.
Input signal connections to the SCMVAS-M attenuator module are made using a pluggable terminal block for ease of system assembly and reconfiguration. For safety purposes, the terminal block has a cover over the screws and there are no other exposed high-voltage points on the SCMVAS-M series modules, SCM5B30-07 or SCM5B40-07 module, or the mounting backpanel.
Features
- Accepts Millivolt Voltage Level Signals
- 4Hz Signal Bandwidth
- High Level Voltage Outputs
- 1500Vrms Transformer Isolation
- ANSI/IEEE C37.90.1 Transient Protection
- Input Protected to 240VAC Continuous
- 160dB CMR
- 95dB NMR at 60Hz, 90dB at 50Hz
- ±0.03% Accuracy
- ±0.005% Linearity
- ±1µV/°C Drift
- CSA C/US Certified, FM Approved, CE and ATEX Compliant
- Random Vibration : MIL-STD 202G, Method 214A, Condition 1
- Swept Sine Vibration : MIL-STD-810G, Method 514.6, modified
- Shock : MIL-STD-810F. Method 516.5