2338S024S Sets the bandwidth of real and reactive power and energy measurements: 1. Wideband 2. Fundamental Generally, harmonic components are the result of non-linear distortions in the generator or the load. In Wideband mode, measurements include power of all harmonic components (e.g. 3rd, 5th), up to the cutoff frequency (see Installation Instructions). In Fundamental mode, measurements include only power in the fundamental Frequency (see AI410). NOTE: Harmonic power requires matched frequency components in the spectrum of both voltage and current. For example, given a 5th harmonic of current, there must be a corresponding 5th harmonic of voltage. Otherwise, even though distortion power increases, the real and reactive components of power cancel leaving only the power in the fundamental. For consistency, consider resetting accumulated energy (see AV192) after changing this setting. Default: Wideband MSV163 Power Units R/W/NV Sets the preferred units for power and demand power values: 1. Kilowatts 2. Watts 3. Megawatts Verify the setting by reading the Units of Measure of any power object (e.g. AI600). Saved statistical values, included maximum demand power, automatically convert when the selected unit changes. The options specify real power units only. Reactive and apparent power always follow the real power scale, as shown in each column: Relative Scale = 1.0 1,000 1,000,000 Real Power W (Watts) kW MW Reactive Power VAR (Volt-Amps Reactive) kVAR MVAR Apparent Power VA (Volt-Amps) kVA MVA Default: Kilowatts MSV173 Energy Units R/W/NV Sets the preferred units for accumulated energy values: 1. Kilowatt Hours 2. Watt Hours 3. Megawatt Hours Verify the setting by reading the Units of Measure of any energy object (e.g. ACC700). Accumulated energy automatically converts with no loss when the selected unit changes. The options specify real energy units only. Reactive and apparent energy always follow the real energy scale, as shown in each column: Relative Scale = 1.0 1,000 1,000,000 Real Energy Wh (Watt hours) kWh MWh Reactive Energy VARh (Volt-Amp Reactive hours) kVARh MVARh Apparent Energy VAh (Volt-Amp hours) kVAh MVAh Default: Kilowatt Hours EM-RS485 BACnet Protocol Guide Page 44 of 49 154-0022-0C MSV181 Demand Synchronization Mode R/W/NV Sets the synchronization mode for the demand window: 1. No Synchronization 2. Setup Button 3. Binary Input 1 (falling) 4. Binary Input 1 (rising) 5. Binary Input 2 (falling) 6. Binary Input 2 (rising) 7. Every Hour 8. Every Day Selecting any of the synchronization sources allows the internal window to be aligned to some external reference (Figure 19B). When a synchronization event is detected, the current window ends immediately and a new window begins. Synchronization events occur exactly once when the selected condition is detected. Synchronization cannot re-occur until the condition is removed and redetected, no matter how long it may be maintained. In No Synchronization mode, the Elapsed Demand Window (see AV184) counts time continuously, only restarting if the meter itself restarts (Figure 19A). When the counter reaches the full Demand Window Time (see AV183), the current demand window ends and a new window begins. In Setup Button (see BI200) mode, synchronization occurs as soon as the button is pressed. The Setup Button always performs its normal function. If there are any active diagnostic conditions, it may be necessary to exit diagnostic mode after pressing the button (see Installation Instructions). To avoid a second synchronization, wait for diagnostic mode to time out (about 60 seconds). In Binary Input (see BI201, BI202) mode, Falling Edge synchronization occurs when an external contact pulls the pulse input to GND (active low, see Figure 18). Rising Edge synchronization occurs in the opposite condition, when an external contact opens. The Debounce Time (see AV208) may delay the synchronization up to 250 milliseconds after the transition. This mode may be useful to align demand windows with a utility meter that provides a regular synchronization pulse. In Every Hour or Every Day mode, synchronization requires an initial BACnet Time Synchronization set the internal clock, and periodic broadcasts to correct small clock drift. If the Time Synchronization broadcasts are not maintained, performance will eventually be equivalent to No Synchronization. Also in Every Day mode, a specific hour of the day may be selected (see AV182). For Full Synchronization, relying exclusively on an external trigger, disable the internal window time by setting the Demand Window Time to 0 minutes (Figure 19C). A: No Synchronization B: Basic Synchronization C: Full Synchronization S T W W W W W S S S S Figure 19: Synchronization Modes NOTE: Consider synchronizing when the average power is typically light (e.g. midnight). When a synchronization event is detected, it makes no difference how much or little time has elapsed in the current window. Average power may be more volatile if the window has only just started, being measured over a shorter period of time. Default: No Synchronization EM-RS485 BACnet Protocol Guide Page 45 of 49 154-0022-0C R Phase MSV1103 CVT Status R Returns general CVT status: 1. No CVT 2. No Error 3. Detection Error 4. Communication Error 5. Configuration Error 6. Version Error 7. Technology Error Any Error status causes the Sensor Fault (see AV1400) condition to be set. In this case, all of the individual phase measurements (see AI1420 ff.) are marked invalid. In addition, the phase carries no weight in the system average calculations (see AI420 ff.). Previous phase statistics and energy accumulations are preserved. Typically, errors result from an unreliable cable connection between the EM-RS485 and a CVT. Disconnect the CVT from the meter and inspect the cable and connector for damage. If an error persists when the CVT is reconnected, please contact technical support. At EM-RS485 launch, all Senva CVTs are based on Rogowski Coil technology; Technology Error is provided in anticipation of future CVT technology upgrades. MSV1104 PowerPrint Identity Status R/W/NV Sets the status of the CVT’s PowerPrint identity: 1. No Identity 2. Identity Saved 3. Identity Error The PowerPrint identity captures the digital identity of the installed CVT for reference. To initialize or update the PowerPrint identity, activate PowerPrint (see BV241) or write Identity Saved. To clear any saved identity, write No Identity or disable PowerPrint. Returns Identity Saved when the CVT identity matches the reference identity. Returns Identity Error when it appears that the CVT has been removed or swapped with a different one. In the latter case, PowerPrint also sets the Unexpected Sensor and/or the Missing Sensor conditions (see AV1400). Default: No Identity MSV1154 Current Sensor Technology R Returns the current sensor technology of the CVT: 1. Unknown Technology 2. Rogowski Coil 3. Current Transformer Read only. If no CVT is installed, returns Unknown Technology. At EM-RS485 launch, all Senva CVTs are based on Rogowski Coil technology. The combination of the technology of all installed CVTs gives the System Current Sensor Te |
