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Class 500 Advanced KWh/Demand
Meter
INSTALLATION INSTRUCTIONS
APPLICATION
The Class 500 Meter is a 3-element meter with communications. The device is used to monitor electric power usage of individual
loads after the utility meter. Installation must only be performed by qualified personnel and in accordance with these
instructions and all applicable local and national electrical codes.
62-0304-05
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CLASS 500 ADVANCED KWH/DEMAND METER SPECIFICATIONS Input Voltage Configuration: Outdoor Housing Rating (Model numbers with an R at the 3-wire (Delta) or 4-wire (WYE) end): NEMA 4 Mains Voltage Input: Up to 600 VAC RMS available Indoor Housing Rating (Model numbers without an R at the end): Input Power: NEMA 12 6 VA maximum rating Display Readout: Current Sensor Rating: KWh accumulated Up to 3200 Amp RMS AC available Standard Ranges: Power Factor: (3 or 4 Wire) 120/208-240V: 100,200,400,800,160
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CLASS 500 ADVANCED KWH/DEMAND METER INSTALLATION VERIFY the input voltage rating and configuration on the unit panel label to ensure it is suitable for the intended electrical service. Meters labeled for 115/208 volt service MUST NOT be installed on service feeds of 277/480 volt and vice versa. VERIFY that the Class 500 Meter current sensors are sized suitably for the load to be monitored. Compare the color of the arrows on the current sensors to the chart below to confirm the correct current
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CLASS 500 ADVANCED KWH/DEMAND METER Main Power Board Connections to this board include the MAINS input voltage, current sensors, and external pulse input (See Fig. 2). The MAINS input terminals are covered with a protective clear shield for safety purposes. The current sensor assemblies interface to TB2, TB3 or TB4. Each header connector input corresponds to an input voltage phase; therefore, care must be exercised to ensure each current sensor is connected to the correct input header. MAINS I
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CLASS 500 ADVANCED KWH/DEMAND METER d. Connect the three AC mains power wires (PHASE A, PHASE B, and PHASE C) to their respective positions as labeled on terminal block TB1. After all conductors are connected to their respective terminal block positions and tightened down, verify each terminal block screw is securely fastened by gently tugging on each conductor. Verify that no conduc- tor wires are frayed or shorting to adjacent terminal block positions. 5. External switch mechanism/in-line fu
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CLASS 500 ADVANCED KWH/DEMAND METER Fig. 3. Split core current sensor assembly. Fig. 4. Split core current sensor assembly installed. IMPORTANT: When looking from the source side of the conductor(s) being monitored, you should see the arrow on the current sensor assembly. The arrow should be pointing in a clockwise direction around the conductor(s) being monitored. If the arrow is not positioned on the source side, the resulting readings will be inaccurate. Current Sensor Wiring Once all the c
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CLASS 500 ADVANCED KWH/DEMAND METER D5 ETHERNET BOARD M28748A Fig. 7. Location of LED D5 (labeled “MTR”) and Ethernet board. Verify that the AC MAINS voltage wires are all connected to the correct positions on terminal block TB1. Inspect the MAINS input wiring to verify each conductor is terminated at the correct terminal block position. Using an AC voltmeter, measure the AC voltage for each Phase to Neutral terminal and to the frame ground point. Load each current sensor by running at least 1
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CLASS 500 ADVANCED KWH/DEMAND METER Wiring to the Network RS-485 Wiring for BACnet MS/TP, Modbus RTU, or EZ-7 The Class 500 Meter contains an RS-485 serial communications port allowing it to communicate via BACnet MS/TP, Modbus RTU, or EZ-7. The units can be daisy-chained together over distances of up to 4000 feet. Up to 52 unit nodes can be networked together. The meters are networked in a daisy-chain configuration with BELDEN 1120A cable or an equivalent. A cable rating of 600V allows a RS-
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CLASS 500 ADVANCED KWH/DEMAND METER The meter is shipped with a Modbus ID number of 01. This must be changed if the network has more than one meter installed. The change must be done before the meter is introduced into the network, or it can be put on the network as the only device on the network and Modbus address changed before adding additional devices. The meter can be numbered from 1 to 247. There can be no duplicate numbers on a network, so caution must be taken when assigning a meter I
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CLASS 500 ADVANCED KWH/DEMAND METER SERVICE PIN SWITCH (BLUE PUSH BUTTON): BROADCASTS LON NEURON ID TO LON NETWORK. ASSISTS IN SETUP OF DEVICE ON LON NETWORK. LONWORKS MODULE. NOTE 2 POSITION TERMINAL BLOCK FOR TWISTED PAIR CONNECTION Fig. 11. LON wiring. Ethernet wiring for BACnet IP, and Modbus TCP/IP and Ethernet EZ-7 These models are shipped with a board that allows for Ethernet communication via Modbus TCP/IP, BACnet IP or Ethernet EZ-7. EZ-7 protocol is required when using the Ene
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CLASS 500 ADVANCED KWH/DEMAND METER NOTE: One set of current sensors equates to three sensors, one per phase. The multiplier only applies when extra sets of cur- rent sensors are installed on one Class 500 Meter. Therefore, if you are using only one set of three current sensors, the multiplier is not required. LINE VOLTAGE CURRENT SENSORS ØA ØB ØC ØA ØB ØC N B W B W B W LINE VOLTAGE LEADS LOAD A A B C CURRENT SENSOR N LEADS L
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CLASS 500 ADVANCED KWH/DEMAND METER MAINTENANCE The Class 500 Meter unit is shipped in a calibrated and fully functionally tested condition. Since the unit is factory calibrated using proprietary firmware algorithms, no internal unit adjustments are necessary. This unit contains no internal adjustments. Therefore no preventative or scheduled maintenance is required, or cleaning or decontamination procedures. Lithium Battery Replacement Instructions The Class 500 Meter has a lithium battery cel
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CLASS 500 ADVANCED KWH/DEMAND METER Use the following procedure to replace the lithium battery cell. 1. Disconnect power from the Class 500 Meter at the unit external circuit breaker. 2. Remove the battery from its socket and place it on a non-conductive surface. 3. Install the new battery into the PCB battery socket. NOTE: The main power board battery socket is keyed to prevent the user from inserting the new battery in the wrong polarity. No damage will occur to the unit or battery if the ba
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CLASS 500 ADVANCED KWH/DEMAND METER Modbus Point Map Modbus data points available from the Class 500 meter. Listed under Class 500. Table 4. Honeywell Modbus point map INTEGER W FLOAT UOM CALC. MEM OP DESCRIPTION CLASS 500 1 40001 2 41001 kWh T-del NV R/W Energy delivered Y 2 40003 2 41003 kWh T-rec NV R/W Energy received Y 3 40005 2 41005 kVARh T-del NV R/W Reactive energy delivered Y 4 40007 2 41007 kVARh T-rec NV R/W Reactive energy received Y 5 41009 kW T R Real power Y 6 41011 kVAR T
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CLASS 500 ADVANCED KWH/DEMAND METER Table 4. Honeywell Modbus point map ITEM PM-I W DATA (SAMPLE) DESCRIPTION 46001 8 504D 324B 0106 0421 0800 454D 4F4E 2020 Firmware version: PM 5K, Ver, Ver date/time, R Honeywell 46009 8 456E 6572 6779 204D 6574 6572 0000 0000 Device description: Honeywell Energy Meter R 46017 8 1356 4503 0613 0300 0000 0000 0000 0000 Initialize device with date/time W 46025 8 1356 4503 0613 0300 0000 0000 0000 0000 RTC date/time, will accept broadcast R/W command 46033
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CLASS 500 ADVANCED KWH/DEMAND METER FREQUENTLY ASKED QUESTIONS Q. When providing line voltage to the Class 500 Meter, can l tap off of the same breaker l am monitoring? A. Yes, the voltage can be pulled from the same breaker being monitored. Q. Can the Class 500 Meter line voltage wires be run in the same conduit as the sensor leads? A. Yes, there will be no effect on the Class 500 Meter if the sensor leads and line voltage wires are run in the same conduit. Q. How do l find the cost for kWh and
