installation Operation ADDRESS product diagram H8030/8031 INSTALLATION GUIDE

Transcription

1 POWER MONITORING INSTALLATION GUIDE H8030/8031 H8030/8031 Modbus Energy Meter Networked kw/kwh Transducer Product Identification Model Max Amps CT Size Enhanced Data Stream Meters H H Small H n H n 0 Installer s Specifications Input Primary Voltage 08 to 480 VAC Line-to-Line Number of Phases Monitored 1 Frequency 50/60Hz Maximum Primary Current 100 or 300A cont. Internal Isolation 000VAC RMS Case Insulation 600VAC Temperature Range 0 to 60 C (3 to 140 F) Humidity Range 0 to 95% non-condensing Accuracy ±1% of reading from 10% to 100% of the CT rated current (accomplished by matching the CT with the meter and calibrating them as a unit) Output Physical Characteristics RS485, -wire plus common Baud Rate 9600 Protocol Modbus RTU CT Split-core, 100 or 300A quick install Disconnect and lock out power before installation. 1. Choose a Modbus address not currently in use and set this address using the switches on the bottom of the CT.. Connect the voltage leads to the source to be monitored. 3. Snap the CT onto the conductor. 4. Connect the RS-485 wires (observe polarity). 5. Reconnect power. dimensions Z050-0C PAGE Veris Industries USA or / support@veris.com mm mm mm mm mm mm 4.7

2 Operation The H8030 and H8031 single-phase power transducers monitor energy parameters from aggregate kw (demand) and kwh (consumption) to power factor. With two platforms to choose from (Energy Only or Enhanced Data Stream), the applications for the H8030/31 Series are diverse, including energy management, performance contracting, demand limiting and cooling plant optimization. The H8030/31 Series combines a microprocessor-based power meter and a high accuracy split-core instrument-grade current transformer (CT) in a single unit. Because the electronics are integral to the CT, and power can be monitored on up to 63 loads using a single RS-485 drop, hardware and installation costs are greatly reduced. product diagram installation Disconnect and lock out power before installation Choose a Modbus address not currently in use and set this address using the Address Selection Switches on the bottom of the CT (see 4 Product Diagram) ADDRESS. Connect the voltage leads to the conductors, at a location that is not normally turned off. Connect voltage leads on the Line side of the conductor. MODBUS RS-485 LINE Enercept To additional MODBUS Devices Snap the CT onto the conductor. If the application can exceed 0 times the rated CT current, use wire ties to secure the I-bar to the CT housing. This CT automatically detects phase reversal, so CT orientation is not important. Wire tie 1. Voltage Leads: input range is 08 to 480VAC L-L.. Fuses: maximum current draw 60mA. Fuses provided by the factory are rated 1/A. 00 KAIC. Replace only with fuses of the same type and rating. 3. Modbus connection port 4. Status LED: blink codes: slow green for normal operation; slow red for incorrect wiring or low power factor (less than 0.5); fast red for max. current exceedance. 5. Address selection switch: set to assign an address prior to wiring. 6. Fuse Pack 4. Connect the RS-485 wires (observe polarity). 5. For information regarding software setup, see the Modbus protocol specifications available at 6. Check power reading. Expected power: kw = Volts x Amps x PF / 1000 kw = Horsepower x ex.:.4 kw = 40 VAC x 10 Amps x 1.0 / 1000 Z050-0C PAGE 009 Veris Industries USA or / support@veris.com 03095

3 notes 1. DO NOT GROUND THE SHIELD INSIDE THE ELECTRICAL PANEL. All Modbus wires, including the shield should be insulated to prevent accidental contact to high voltage conductors.. The Modbus cable should be mechanically secured where it enters the electrical panel. 3. All Modbus devices should be connected together in a daisy-chain fashion. The first and last devices in the chain should have a 10Ω terminating resistor between (+) and (-). See diagram below. 4. The Modbus cable should be shielded twisted pair wire BELDEN 110A or similar 5. The user must clear the H8031 Demand register via their BAS at the desired interval (the H8031 does not support an interval schedule). Clearing Integer registers will reset Floating point register as well. Output H8030 kw, consumption Reset kwh kw, demand H8031 kw, consumption kw, demand VAR, reactive power VA, apparent power Power factor Average demand Minimum demand Maximum demand Voltage, L-L Voltage, L-N Amps, average current WARNING: After wiring the Modbus cable, remove all scraps of wire or foil shield from the electrical panel. This could be DANGEROUS if wire scraps come into contact with high voltage wires! 10Ω Terminator SHIELD SHIELD SHIELD S S Z050-0C PAGE Veris Industries USA or / support@veris.com 03095

4 Address selection switches DO NOT USE ZERO! Z050-0C PAGE Veris Industries USA or / support@veris.com 03095

5 communications setup This table lists the addresses assigned to each data point. Registers are read Most Significant Byte (MSB) first. 3-bit floating point values are encoded per IEEE Standard 754. For floating point format variables, each data point appears twice because two 16-bit addresses are required to hold a 3-bit float value. The 16 bit Most Significant Word (MSW) is in the lower address of the register pair, while the least Significant Word (LSW) is in the upper address. Modbus RTU function codes supported: 3=read holding registers; 6=preset single register; 17=report Slave I.D. Integer Registers Modbus Addr Typical Offset Units Description KWH Energy Consumption, LSW KWH Energy Consumption, MSW KW Demand (power) VAR Reactive Power VA Apparent Power Power Factor VOLTS Voltage, line to line AMPS Current KW Demand (power), phase A Power Factor, phase A VOLTS Voltage, phase A-B AMPS Current, phase A KW Average Demand KW Minimum Demand KW Maximum Demand Float Registers Modbus Addr Typical Offset Units Description FLOAT: UPPER 16 bits FLOAT: LOWER 16 bits KWH Energy Consumption X KWH Energy Consumption X KWH Energy Consumption (same 4057) X KWH Energy Consumption (same 4058) X 4061 KW Demand (power) X 406 KW Demand (power) X VA Apparent Power X VA Apparent Power X KW Demand (power), phase A X KW Demand (power), phase A X Power Factor, phase A X Power Factor, phase A X VOLTS Voltage, phase A-B X 4088 VOLTS Voltage, phase A-B X AMPS Current, phase A X AMPS Current, phase A X KW Average Demand X KW Average Demand X KW Minimum Demand X KW Minimum Demand X KW Maximum Demand X KW Maximum Demand X Modbus addresses in the 4xxxx format follow the Modicon protocol specification for point addressing. The actual address sent is the value shown, minus In other words, the leading 4 is omitted, and the remaining 4-digit number is decremented so that point is requested with a value of zero in the actual Modbus communication. Some Modbus implementations require point addresses to be specified beginning at 0 or 40000, instead of Programming code may also require addresses that correspond to actual values transmitted, so a value of zero is used to request data beginning at Modbus address In many applications, a single Modbus command is used to read all of the data available from the meter. For integers, the beginning address is (or zero in the actual Modbus command), and for floats the first address used would typically be 4059 (or 58 in the actual Modbus command). Although the first float appears at address 4057, it is not necessary to read this value because it is a duplicate copy of the kwh value (required by the product firmware). When a block of data is read, the typical offset values index to the data within the block. Z050-0C PAGE Veris Industries USA or / support@veris.com 03095

6 using integer data types Unlike the floating-point data type, the integer data type can only represent whole numbers between 0 and To convert a data point value into the number it represents, the value must be multiplied by a constant, as indicated in the table below. Please note: some data points require different multipliers for each amperage range, while others, e.g. volts and power factor, use the same multiplier regardless of the amperage range of the product. Addr Units 100A 300A kwh kwh kw VAR VAR E Volts Amps 3.906E kw E Volts Amps 3.906E kw kw kw As an alternative to the previous table, it may be convenient to invert the values for use as divisors, where the integer value returned by the meter is divided by a number from the table below. In most cases, the divisors are a more compact number. Addr Units 100A 300A kwh kwh 9.77E-4.44E kw VAR VA Volts Amps kw Volts Amps kw kw kw Z050-0C PAGE Veris Industries USA or / support@veris.com 03095

7 Float Multipliers troubleshooting Addr Units 100A/300A Multiplier 4057 kwh 4058 kwh 4059 kwh 4060 kwh 4061 kw 406 kw 4065 VA 4066 VA 4075 kw 4076 kw Volts Volts Amps Amps kw kw kw kw kw kw Problem Status LED does not blink Power meter interferes with another device Modbus. Readings seem highly inaccurate. Meter goes offline when load is switched off. Status LED blinks red. Solution Check fuses and voltage connections. Status LED should blink regardless of CTs, Modbus connections, and DIP switch setting. Set DIP switches to a different Modbus address which is not in use. In most cases, incorrect wiring will cause the STATUS LED to blink RED (slowly). However, a power factor lower than 0.5 could cause the LED to blink this way, even if the unit is installed properly. It does not matter which side of the CT faces towards the load. Check actual current with Amp clamp. Expected power is: kw = Volts x Amps x 1.73 x PF / 1000; kw = Horsepower x (PF is usually 0.7 to 0.95 depending on the nature of the load) Compare this to the kw. If current is below 7% of full scale maximum for the CT, use a smaller CT or wrap each wire through the CT multiple times Voltage leads must be connected on the Line side of the conductor. The power meter cannot communicate without voltage. If the LED blinks quickly (i.e., about 5 blinks in two seconds) the CT used is too small. Replace with a larger CT. If the LED blinks slowly (i.e., about 1 blink in two seconds) the CT is not installed on the correct conductor, or the power factor is less than 0.5. The meter can accurately measure these low PFs, but few loads operate normally at such a low power factor. Z050-0C PAGE Veris Industries USA or / support@veris.com 03095