Components and Specifications
45
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o
(12-17) V – Undefined
o
Above 18 V – Activation
•
For nominal voltage 48 V, 110 V, and 220 V, to a maximum input of 250 V:
o
Less than 30 V – No activation
o
(30-35) V – Undefined
o
Above 35 V – Activation
The scanning rate of digital inputs is 2 kHz. The minimum pulse width of the digital inputs
that can be detected and recorded is greater than 0.5 ms.
The debounce time of digital inputs ranges from 0 to 1000 ms in 1 ms steps.
The purpose of digital inputs is to monitor the state of external contacts normally associated
with protection relays and circuit breakers.
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Figure 3.31 – INFORMA PMD-A Digital Inputs
3U
Summary of Contents for INFORMA PMD-A
Page 1: ...User Manual www qualitrolcorp com INFORMA PMD A Data Acquisition Unit Document ID 40 08557 01...
Page 7: ...Contents Contents iv www qualitrolcorp com References 240...
Page 8: ...About This Manual 1 www qualitrolcorp com Chapter 1 About This Manual...
Page 12: ...Overview 5 www qualitrolcorp com Chapter 2 Overview...
Page 15: ...Components and Specifications 8 www qualitrolcorp com Chapter 3 Components and Specifications...
Page 58: ...Installation 51 www qualitrolcorp com Chapter 4 Installation...
Page 86: ...Configuration 79 www qualitrolcorp com Chapter 6 Configuration...
Page 108: ...Configuration 101 www qualitrolcorp com Figure 6 22 PQ Free Interval Continuous Recording...
Page 120: ...Maintenance 113 www qualitrolcorp com Chapter 7 Maintenance...
Page 126: ...Maintenance 119 www qualitrolcorp com Figure 7 7 Voltage Calibration...
Page 166: ...Appendix B INFORMA PMD A Functions 159 www qualitrolcorp com Figure B 9 RMS Envelope PQRVC...
Page 199: ...Appendix D License Information 192 www qualitrolcorp com Appendix D License Information...
Page 246: ...References 239 www qualitrolcorp com References...