Honeywell Class 320 Meter User manual

62-0397-02
INSTALLATION INSTRUCTIONS
Class 320 Meter
ADVANCED KWH/DEMAND METER

CLASS 320 METER
62-0397-02 2
TABLE OF CONTENTS
Section 1.0 Introduction 3
Section 2.0 Internal Electronic Assemblies 5
Section 2.1 Main Power Board 5
Section 2.2 Display Board 6
Section 3.0 Meter Technical Specifications 7
Section 4.0 Safety Label Definitions and Information 10
Section 5.0 Precautionary and Safety Information 11
Section 6.0 Meter Installation 12
Section 6.1 Mounting the Class 320 Meter 12
Section 6.2 Main Power Board Connections 12
Section 6.3 Phasing of Line Voltage 16
Section 6.4 Current Sensor Installation & Wiring 17
Section 6.5 Main Power & Current Sensor Wiring Diagram 19
Section 6.6 Line Voltage/Current Sensor Diagnostics 20
Section 6.7 RS-485 Wiring 21
Section 6.8 RS-232 Communications 24
Section 6.9 Modem Wiring 26
Section 6.10 Modbus RTU Wiring 29
Section 6.11 BACnet MS/TP Wiring 30
Section 6.12 Connecting Class 320 Meters to USB Key using RS485 30
Section 6.13 Ethernet Communications 31
Section 7.0 Multiple-Load Monitoring 32
Section 8.0 Preventative/Scheduled Maintenance 33
Section 9.0 Lithium Battery Replacement 34
Section 10.0 Class 320 Meter Operating Modes 36
Section 10.1 Start Up Screens 36
Section 10.2 Normal Mode Display Screens 37
Section 10.3 How to Program the Display Screens 38
Section 11.0 High Voltage Metering 43
Section 12.0 Class 320 Protocol Definitions 46
Section 13.0 Meter Limited Warranty 53

CLASS 320 METER
3 62-0397-02
1.0 INTRODUCTION
The Honeywell Class 320 meter is a 3-element meter with communications. The
device is used to monitor electric power usage of individual loads after the utility meter
and store kW and kVAR data for automatic meter reading. Installation must only be
performed by qualified personnel and in accordance with these instructions and all
applicable local and national electrical codes. E-Mon and its representatives assume
no responsibility for damages or injury resulting from the improper installation of this
meter.
Verify the input voltage rating and configuration on the unit panel label to ensure that it
is suitable for the intended electrical service. For example, Class 320 meters labeled
for 120/208V service MUST NOT be installed on service feeds of 277/480 volts or 347/
600 and vice versa.
Verify that the Class 320 meter’s 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 sensor is being used.
Meter Labeled: Works On:
120V 120V, Single Phase
120/240V 120/240V, Single Phase
277V 277V, Single Phase
208V 208V, Three Phase
240V 240V, Three Phase
400V (380V,415V) 400V, Three Phase
480V 480V, Three Phase
600V 600V, Three Phase
Sensor Arrow Color Code Sensor Rating
Brown 100 A
Red 200 A
Yellow 400 A
Black 800 A
Blue 1600 A
White/Black 3200 A

CLASS 320 METER
62-0397-02 4
CAUTION
Internal circuit components are extremely sensitive to electrostatic discharge.
Prior to handling or touching internal circuitry, discharge any static buildup on
your person. To discharge yourself, touch a grounded metal object such as
conduit or an earth-grounded enclosure.
WARNING
Use of this instrument, the Honeywell Class 320 meter, in a manner
inconsistent with this manual or not specified by the manufacturer in writing,
can cause permanent damage to the unit and/or serious injury to the operator.
The protection and safety features provided by this equipment may become
impaired or otherwise compromised.
NOTE: If any trouble arises during the installation or functional verification opera-
tions, do not immediately remove the unit. Before removing the unit, contact
Honeywell’s technical support and/or engineering department. Honeywell’ s
technical department will assist you in detailed troubleshooting of the Class
320 meter installation and assist you in getting the unit operating correctly.

CLASS 320 METER
5 62-0397-02
2.0 INTERNAL ELECTRONIC ASSEMBLIES
The units are comprised of two major subassembly boards, the main power board and
the display board. Both circuit boards are mounted inside a UL Type 1 (steel) or Type
4X (rain tight) enclosure.
Fig. 1. Internal Electronic Assemblies.
2.1 Main Power Board
Connections to this board include the MAIN Power Input and current sensors.The
MAIN Power Input terminals are positions one through four on the four position screw
terminal block, TB1. These terminals are covered with a protective shield for safety
purposes. The current sensor assemblies interface to TB2, TB3 and TB4. Each
terminal block corresponds to an input voltage phase; care must be exercised to
ensure that each current sensor is connected to the correct terminal block. One three
terminal screw connector is provided for RS-485 communications.
Fig. 2. Main Power Board Connections.
M33307
MAIN
POWER
BOARD
DISPLAY
BOARD
M33308
RS-485
MAIN
POWER
INPUT
CURRENT
SENSOR
INPUT

CLASS 320 METER
62-0397-02 6
2.2 Display Board
The display board connects to the main power board via a flex ribbon cable and the
board mounts on the inside of the housing door.
The Class 320 meter features a 4-line LCD display that indicates multiple meter data
points.
Fig. 3. Display Board.
M33279
DOWN UP SELECT MENU

CLASS 320 METER
7 62-0397-02
3.0 METER TECHNICAL SPECIFICATIONS
Ordering Information: Define brand, class, input voltage, amperage, protocol, and
sensor type in the format A-BB-CCC-DDDD-E-FFF-GGG, where:
A = Brand: H for Honeywell
BB = designates Class 320 (32), or Class 500 (50) meter
CCC = input voltage: (208, 400, 480, 600, 120 volt for High Voltage)
DDDD = current rating: (100, 200, 400, 800, 1600, 3200, 25HV)
E = enclosure: J = metal (type 1), R = non-metallic (rain tight) (type 4X), M = MMU
FFF= protocol: RTU = Modbus, BAC = BACnet, EZ7 = proprietary
“-SP”= Single or Two Phase
GGG = Sensors: KIT = split-core, SCS = solid-core, “blank” = none supplied
Brand Class Voltage Amperage Enclosure Communication Protocol Current Sensor/Option Current Sensor/Option Current Sensor/Option
Example H 32- 208 100- J RTU KIT
H32-208100-JRTUKIT
Brand Honeywell
Class 320
Voltage 120, 208, 400 (380-415), 480, 600
Amperage 2HV, 100, 200, 400, 800, 1600, 3200
Enclosure J (JIC Steel), I (Interior only), M (MMU Style), R (Rain tight)
Communication
Protocol
RTU (Modbus RTU), BAC (BACnet MS/TP), EZ7
Current Sensors/
Options
KIT (Split Core), SCS (Solid-Core), -SP (Single or Two Phase - 2
element)
Input Voltage
Configuration
3-wire (delta) Or 4-wire (wye)
Mains Voltage Input Up To 600 VAC RMS available
Input Power 6 VA maximum rating
Current Sensor
Rating
Up To 3200 amps RMS AC available
Power Factor 0.5 leading or lagging
Line Frequency 50-60 Hz
Metering Accuracy ANSI C12.20

CLASS 320 METER
62-0397-02 8
Temperature Range -20C to +50C
Relative Humidity
Range
0-95% non-condensing
Altitude 2000 meters maximum
Voltage Overload +25% continuously: +100% For 20 cycles
Current Sensor
Overload
100% for 1 minute
Pollution Degree Degree 2 in accordance with IEC 664
Standards EN 61326-1:2006 IEC 61010-1:2001, 2nd Edition
Installation
(Overvoltage)
Category
Category III
Measurement
Category
Category III
Enclosure Material Type 1 JIC steel or Type 4X Rain Tight
Display Readout LCD
Standard Ranges 2-Wire Delta 120 VAC: 100, 200, 400, 800,1600, 3200 Amp
4-Wire Wye 120/208 VAC: 100, 200, 400, 800,1600, 3200 Amp
3-Wire Delta 120/240 VAC: 100, 200, 400, 800,1600, 3200 Amp
4-Wire Wye 277/480 VAC: 100, 200, 400, 800,1600, 3200 Amp
2-Wire Wye 277 VAC: 100, 200, 400, 800,1600, 3200 Amp
4-Wire Wye 400 VAC: 100, 200, 400, 800,1600, 3200 Amp
3-Wire Delta 480 VAC: 100, 200, 400, 800,1600, 3200 Amp
4-Wire Wye 600 VAC: 100, 200, 400, 800,1600, 3200 Amp
RS-485 Serial
Communications
Cable
Cable: UL-listed/rated/3-conductor,
300 VAC, stranded
conductors, 22-26 AWG.
Input/output Voltage: Ground-isolated +/-5.4Vdc
Cable Connector: Screw terminal termination
Circuit Input Isolation: 5.3kVAC
Max Cable Distance: 4000 feet
Max Network Nodes: 64 cabling nodes (including
master)
Baud Rate: 9600, 19200, 38400, 76800
Recommended
In-Line Fuse
Manufacturer: Littlefuse
Mfg. Part No: KLDR.100
Rating: 100mA, time-delay, 600VAC
cartridge fuse

CLASS 320 METER
9 62-0397-02
Battery Cell: Description: Non-rechargeable cell used for
memory retention
Manufacturer: Panasonic
Mfg Part No: CR2032
Working Voltage: 3Vdc
Current Capacity 225 mAHr
Electrolyte: Manganese Dioxide Lithium

CLASS 320 METER
62-0397-02 10
4.0 SAFETY LABEL DEFINITIONS AND
INFORMATION
The 320 meter may contain one or more of the following labels. Operator(s) should
familiarize themselves with the meaning of each label to minimize risk.
FCC Notice
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver
- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Standards Compliance:
BACnet MS/TP and IP protocol is BTL listed.
LonWorks TP/FT-10 protocol is LonMark® certified.
The presence of this label is a cautionary indicator identifying a
danger risk. The manual should be consulted prior to proceeding.
The presence of this label indicates an electrical shock hazard exists
in the location or area where the label is placed. Prior to proceeding,
the MAINS power must be disconnected and the manual consulted for
safety information.