MPG-2 Wireless Meter Pulse Generator
MPG-2 Metering Pulse Generator.vsd
2.0
Provisioning
2.1
Pairing the USB Zigbee Dongle Transceiver
The USB Zigbee Transceiver device must be paired with a Zigbee-equipped AMI electric meter. This may be
accomplished either manually with the assistance of the utility or on their website if they have the process automated. The
process for accomplishing this varies from utility to utility and not all utilities provide Zigbee radio availability. Contact your
electric utility to find out how their pairing process is accomplished. This process is also known as "provisioning". The
Dongle must be powered to be paired with the meter and must be within range of the meter, usually within 25 feet.
Distances may vary depending on the types of structures and building materials that the radio signal must penetrate.
The Meter must be programmed with the Dongle's MAC address and Installation ID code. By being "paired", the meter
creates a network with only two nodes, and knows that it can only send data to that particular Dongle and the Dongle only
accepts data from that particular electric meter. Non-volatile memory in the dongle and meter provides retention of pairing
data.
2.2
Power up the MPG-2 for Provisioning
Apply power to the MPG-2 using a 120VAC line cord. Make sure to get the Hot lead(usually Black) of the line cord
connected to the
120V
terminal. Connect the neutral lead(usually White) connected to the
NEU
terminal. Connect the
ground lead (Green) to the
EGND
terminal. Upon power-up the yellow COM LED will light indicating the the MPG-2's
microprocessor senses the presence of the Zigbee dongle and that it is installed correctly.
2.3
Pairing Process - If the utility has previously sent the provisioning information to the electric meter, the RED LED
on the Zigbee dongle will flash for up to 60 seconds while it is establishing network communications with the meter. Once it
has completed establishing communications, the dongle's RED LED will stay on continuously (solid). If the dongle's RED
LED is on continuously, it is correctly provisioned and you may proceed with installation.
2.4
Unsuccessful Pairing - If the dongle's RED LED is not on continuously, the network has not been created, and the
MPG-2 will not receive information from the dongle. If no connection has been made, the MPG-2 will reset the dongle
every 120 seconds (default reset time) attempting to establish a connection. The RED LED on the dongle MUST be lit
continuously before moving on. If it is not, then it is not provisioned correctly with the utility's meter. Do not proceed until
this step is successfully completed. Make sure that the dongle has not been previously paired with a different meter.
2.5
Contact Utility - If the utility has not previously sent the provisioning information to the electric meter, or has not
previously paired this meter with this dongle, you will have to contact them to get this accomplished. Give them the
dongle's MAC address and the Installation ID code, supplied with the MPG-2.
3.0
Installing the MPG-2
3.1
Mounting Location - Mount the MPG-2 to the building at or near the electric meter that will be wirelessly sending
communications to the MPG-2. It must be within 75' but distances may vary depending on whether the radio signal must go
through any walls and the material of those walls. For best results mount the MPG-2 as close to the meter as possible with
an unobstructed line-of-sight with the meter if possible.
3.2
Mounting Hardware - Two mounting flanges, top and bottom, are provided in the fiberglass NEMA 4X enclosure.
Mount with the hinge on the left hand side of the enclosure and latches on the right hand side. Use 1/4" Lag Bolts or
suitable hardware to attach the MPG-2 to the building.
3.3
Wire the Power Supply - Drill a suitable 1/2" conduit-sized hole (.875" max) into the upper compartment from the
left hand side of the enclosure. Wire the power supply to the MPG-2. For 120VAC, wire the Hot lead(usually Black) to the
120V
terminal. Connect the neutral lead(usually White) to the
NEU
terminal. Connect the ground lead (Green) to the
EGND
terminal. If the MPG-2 is mounted directly to the meter, AND no true Neutral exists at the meter, wire the NEU and
EGND terminals both to Ground.
3.4
Wire the Pulse Outputs - Drill a suitable 1/2" conduit-sized hole (.875" max) into the lower compartment from the
bottom or lower sides of the enclosure into the customer compartment. Run 1/2" conduit as desired to destination wiring
enclosure. Determine whether the device(s) receiving pulses from the MPG-2 will need 2 wires or 3 wires. A 3-Wire (Form
C) connection will use all three wires K,Y, and Z. A 2-Wire (Form A) connection will use only two wires, usually K and Y.
See Figure 1 or Figure 2 for wiring diagrams. A minimum wire size of #18AWG is recommended. Although smaller wires
will adequately carry the ultra-low current involved, it is generally hard to work with and subject to easy breakage.
3.5
Wire the End-of-Interval Output - If you are using the EOI output for synchronization of the demand interval to the
meter you will use the 2-Wire (Form A) pulse output. Two wires will be required to the T1 and T2 terminals.
