Solid State Instruments MPG-3SC-R22 Metering Pulse Generator Instruction Manual
- June 12, 2024
- Solid State Instruments
Table of Contents
INSTALLATION INSTRUCTION SHEET
MPG-3SC-R22 Metering Pulse Generator
MPG-3SC-R22 Metering Pulse Generator
MOUNTING POSITION –
The MPG-3SC-R22 can be mounted in any position. Four mounting holes are
provided. The MPG3SC-R22 has a non-metallic NEMA 4X enclosure so wireless RF
transmissions can be sent to and received from the meter without interference.
The MPG-3SC-R22 must be mounted within about 75 feet of your meter. Distances
vary with building construction and proximity to the meter. For best results,
mount as close to the meter as possible. The pulse output lines from the MPG-
3SC-R22 may be run longer distances, but the MPG-3SC-R22 should have
uninterrupted line-of-sight access to the greatest extent possible for best
results. Choose a mounting location that will not have any metallic parts —
moving or stationary – that can affect the RF communications.
POWER INPUT – The MPG-3SC-R22 is powered by an AC voltage of between 90
and 300 volts. Connect the AC supply’s “hot” wire to the LINE terminal.
Connect the NEU terminal to the AC supply’s “neutral” wire. Connect GND to
electrical system Ground.
The GND Terminal MUST be ground.
CAUTION: Wire Phase to Neutral only, NOT Phase to Phase.
METER DATA INPUT – The MPG-3SC-R22 receives data from a Zigbee-equipped
AMI electric meter that has been paired with the MPG-3SC’s Zigbee receiver
module. The Zigbee receiver module must be paired with the meter before the
MPG-3SC can be used. Once paired, the MPG-3SC starts receiving demand
information from the meter. (See Page 3.)
AUXILIARY PULSE ISOLATION RELAY – The MPG-3SC-R22 incorporates a
2-in/2-out Pulse Isolation Relay similar to the RPR22PS or SPR-22. Hardwired
KYZ Pulses – Form A or Form C – can be connected from the electric meter to
the MPG-3SC-R22’s
AUX KYZ pulse inputs for any kind of KYZ pulse. Two Form C outputs are
available for connecting to customer-owned energy management systems or other
telemetry devices.
OUTPUTS – Two Form C (3-wire) isolated dry-contact outputs are provided
on the MPG-3SC-R22, with output terminals K1, Y1 & Z1 and K2, Y2, & Z2. In
addition, the MPG-3SC-R22 contains a Form A (2-Wire) isolated, dry-contact
End-Of-Interval “EOI” output for an end of interval signal. Transient
suppression for the contacts of the solid-state relays is provided internally.
The output loads should be limited to 500 mA at 120 VAC/VDC. Maximum power
dissipation of each output is 1W. The outputs are protected by fuses F1, F2
and F5. One-half (1/2) Amp fuses (the maximum size) are supplied standard. In
addition, the -R22 has two auxiliary hardwired outputs protected by Fuses F4
and F5, outputting pulse signals from the Aux Pulse Inputs #1 and #2.
OPERATION – See the following pages for a full explanation of the
operation of the MPG-3SC.
MPG-3SC-R22 Wiring Diagram
MPG-3SC-R22 Wireless
Pulse Generator
Wiring Diagram| REVISIONS
---|---
NO.| DATE| DESCRIPTION
| |
| |
| |
DATE ORIGINAL
04/03/23| SCALE
N/A| | |
| |
| |
LATEST REVISION| JOB NO.| CHECKED| DRAWN
WHB
Brayden Automation Corp./
Solid State Instruments div.
6230 Aviation Circle
Loveland, CO 80538
(970)461-9600
sales@brayden.com
www.solidstateinstruments.com
NOTE: All References hereinafter to the MPG-3SC apply to the MPG-3SC-R22 MPG-3SC Wireless Meter Pulse Generator
Pairing the Zigbee Radio Receiver
The Zigbee Receiver Module must be paired with a Zigbee-equipped AMI electric
meter. This may be accomplished either with the assistance of the utility or
on their website if they have the process automated. The pairing process,
generally known as “provisioning”, varies from utility to utility and not all
utilities provide Zigbee radio availability in their meters. Contact your
electric utility to find out how their provisioning process is accomplished.
The MPG-3SC must be powered for the Zigbee module to be paired with the meter
and must be within range of the meter, usually within 75 feet, line-of-sight.
The Meter must be programmed with the Receiver Module’s MAC address (“EUI”)
and Installation ID code. By being “paired”, the meter and the receiver module
have created a “network”. The receiver module (Client) knows that it can only
ask for and receive meter data from that particular electric meter(Server).
Before powering the MPG-3SC, install the Zigbee receiver module in the MPG-
3SC’s host slot if not already mounted.
Secure with 4-40 x 1/4″ nylon mounting screw.
Power up the MPG-3SC (This assumes that the utility has already sent the MAC
address and Install ID to the meter.)
Once the Receiver module has been inserted into the host slot, power up the
MPG-3SC board. The RED LED on the receiver module will flash once every three
seconds looking for the meter. Once it has established communications with the
meter, the module’s RED LED will flash once per second indicating that Key
Establishment is being performed. Once this has been completed, the RED LED
will be lit continuously to indicate that the Module is joined with the meter.
If this LED is not on continuously, the MPG-3SC will not receive information
from the receiver module. If no valid communication is received from the
module, the MPG-3SC will revert back to looking for the meter, and the LED
will flash once every three seconds. The RED LED on the module MUST be lit
continuously before proceeding. If it is not solidly lit, then it is not
provisioned correctly with the utility’s meter. Do not proceed until this step
is successfully completed.
Zigbee Module Communication Status LEDs
Upon power-up, the YELLOW Comm LED should light indicating that the Zigbee
receiver module is correctly inserted, initialized and communicating with the
MPG-3SC’s processor. Within about approximately 30 – 60 seconds, the GREEN
comm LED should begin to blink once about every 8 to 9 seconds. This indicates
that a valid transmission has been received by the receiver module and has
been successfully relayed to the MPG-3SC’s processor. The Green Comm LED will
continue to blink every 8-9 seconds continuously. If the Green Comm LED does
not blink, that is an indication that the data transmissions from the meter
are not being received, may be corrupted, or in some manner are not valid
transmissions. If the Green Comm LED has been blinking reliably every 8-9
seconds for some time, then stops for a while and then restarts again, this
indicates that transmissions are intermittent and sporatic, or generally means
there is a problem in the receiver module’s ability to receive data reliably
from the meter. To correct this, change the proximity of the MPG-3SC to the
meter, move it closer to the meter if possible and eliminate any metalic
obstructions between the meter and the MPG-3SC. Also check to make sure that
any walls or barriers between the MPG-3SC and the meter have as little metal
in them as possible. In some applications you may need line-of-sight.
Pulse Outputs
Outputs can be configured to be in the Toggle (Form C) 3-Wire mode or the
Fixed (Form A) 2-Wire mode. Generally speaking, the Form C mode can be used
with either 2-Wire or 3-Wire pulse receiving devices, while the Form A mode
uses only a 2-Wire interface to the downstream pulse (receiving) device. The
choice would depend on the application and the desired pulse format that the
receiving device prefers to see.
The MPG-3SC will “spread out” the pulses over the next 10 second period if a
high enough watt-hour value is received in a transmission to require that more
than one pulse is generated. For example, suppose you have the Output Pulse
Value of 10 wh selected. The next 8 second data transmission indicates that 24
wh have been used. Since 24 watt-hours exceeds the 10 watt-hour pulse value
setting, two pulses must be generated. The first 10wh pulse will be generated
immediately. About 3-5 seconds later the second 10wh pulse will be generated.
The remainder of four watt-hours stays in the accumulated energy register
(AER) awaiting the next transmission and the energy value of that transmission
to be added to the contents of the AER. Another example: Assume 25 wh/p Output
Pulse Value. Let’s say the next transmission is for 130 watt-hours. 130 is
greater than 25, so 5 pulses will be outtputted over the next 7 seconds,
approximately one each 1.4 seconds (7 seconds / 5 = 1.4 seconds). The
remainder of 5 wh will stay in the AER awaiting the next transmission. Some
trial and error may have to be done for any particular building since pulse
rates will change depending on maximum load.
If the receiver module is reliably receiving data from the meter and passing
it on to the MPG-3SC’s processor, then you should see the Red (and Green in
the Form C output mode) output LED’s toggle each time the selected pulse value
is reached, and the processor generates a pulse. If the pulse output value is
too high and pulses are too slow, enter a lower pulse value. If pulses are
being generated too rapidly, enter a larger pulse output value. The maximum
number of pulses per second in the toggle mode is approximately 10, which
means that the output’s open and closed times are about 50mS each in toggle
mode. If the calculation by the MPG-3SC’s processor is for pulse output timing
that exceeds 15 pulses per second, the MPG-3SC will light the RED Comm LED,
indicating an overflow error, and that the pulse value is too small. It is
“latched” on so that the next time you look at the MPG-3SC, the RED Comm LED
will be lit. In this way, you can quickly determine if a pulse output value is
too small. In the optimum application, pulses would not exceed more than one
pulse per second at full scale demand. This allows a very even and “normal”
pulse rate that as closely as possible resembles an actual KYZ pulse output
from the meter.
Overranging the Output
As previously mentioned, if there are too many pulses calculated to be
outputted in a 6-7 second interval than the MPG3SC can generate given the
timing constraints, the MPG-3SC will light the RED Comm LED. In this
situation, simply increase the output pulse value by entering a higher number
in the Pulse Value box, then click
End-of-Interval Output
The EOI Output is a (Form A) 2-Wire output that operates in the fixed mode.
The MPG-3SC contains an internal time clock that keeps track of the hourly
time. Intervals may be set as 1, 5 10, 15, 30 or 60 minutes. Therefore, at the
end of the selected time interval, a fixed width contact closure or pulse will
occur for the time specifed.
WORKING WITH THE MPG-3SC RELAY
OPERATING MODES: The MPG-3SC Meter Pulse Generator allows the outputs to
be configured in either the “Toggle” or “Fixed” pulse output mode. In the
Toggle mode, the outputs alternate or toggle back and forth each time a pulse
is generated. This is synonomous with the classic 3-Wire Pulse metering and
emulates the SPDT switch model.
Figure 1 below shows the timing diagram for the “Toggle” output mode. KY and
KZ closures or continuity are always opposite of each other. In other words,
when the KY terminals are closed (on), the KZ terminals are open(off). This
mode is best for timing pulses to derive demand whether 2 or 3 wires are being
used.In the
Fixed output mode, shown in Figure 2 below, an output pulse (K-Y closure only)
is a fixed width (T1) each time the output is triggered. The pulse width
(closure time) is determined by the setting of the W command. This mode is
best for energy (kWh) counting systems but may not be the best for systems
doing demand control where pulses are timed to derive instantaneous kW demand.
The K-Z output is not used in the normal/fixed mode. However, it is used in
the Signed mode. See Page 8.In Signed mode, with a Form A output mode
selected, the K-Z output pulse represents negative (or kWh received) energy.
(See Page 8.)
Contact the factory for technical support at (970)461-9600.
MPG-3SC Programming
Setting the MPG-3SC’s Settings
Set the MPG-3SC’s output pulse value, the meter multiplier, the pulse mode and
the pulse timing by using the USB [Type B] Programming Port on the MPG-3SC
board. All system settings are configured using the USB Programming Port.
Download the SSI Universal Programmer software available as a free download
from the SSI website. Alternately, the MPG-3SC can be programmed using a
terminal program such as TeraTerm. See “Setting up the Serial Port” on Page 9.
Programmer Startup
Before starting the program connect the USB cable btween your computer and the
MPG-3SC. Make sure that the MPG3SC is powered up. Click on the SSI Universal
Programmer icon on your desktop to start the program. In the upper left corner
you will observe two Green simulated LEDs, one indicating that the USB cable
is connected and the other that the MPG-3SC is connected to the programmer.
Make sure both LED’s are “lit”. Meter Multiplier
If the building on which you are installing the MPG-3SC has an “Instrument-
Rated” electric meter, you must enter the Meter Multiplier to the MPG-3SC’s
program. If the meter is a “Self-Contained” electric meter, the Meter
Multiplier is 1.
If the facility’s electric metering configuration is Instrument-Rated,
determine the Multiplier of the meter. In an instrumentrated metering
configuration, the meter multiplier is normally the Current Transformer (“CT”)
ratio, but will also include the Potential Transformer (“PT”) Ratio, if PT’s
are used, usually only on larger applications. An 800 Amp to 5 Amp current
transformer, for example, has a ratio of 160. Therefore, the meter multiplier
on a building with 800:5A CT’s would be 160.
The Meter Multiplier is normally printed on the customer’s monthly utility
bill. If you cannot find it, call your utility and ask what the meter or
billing multiplier is.
Programming the Multiplier
To change the multiplier in the MPG-3SC, enter the correct Multiplier in the
Meter Multipler box and click
Pulse Value
The Output Pulse Value is the number of watt-hours that each pulse is worth.
The MPG-3SC can be set from 1 Wh to 99999 Wh per pulse. Select an appropriate
pulse value for your application. A good starting point is 100 Wh/pulse for
larger buildings and 10 Wh/pulse for smaller buildings. You can adjust it up
or down as needed. Larger facilities will require a larger pulse value to keep
from overranging the MPG-3SC’s registers. Enter the number in the Pulse Value
box and click
Output Mode
The MPG-3SC has two output pulse modes, Normal or Signed. Select Normal in the
Output Mode box for standard pulse output and click
Output Form
The MPG-3SC allows either the legacy 3-Wire (Form C) Toggle mode or the 2-Wire
(Form A) Fixed mode. The toggle mode is the classic pulse output mode that
emulates the standard KYZ 3-Wire electric meter output. It toggles back and
forth, to the opposite state, each time a “pulse” is generated by the MPG-3SC.
Even though there are three wires (K,Y, & Z), it is common to use K and Y, or
K and Z, for many two-wire systems that require or desire a generally
symetrical 50/50 duty cycle pulse at any given time. The toggle mode is used
for systems that are doing demand monitoring and control and need regularly
spaced or “symmetrical” pulses. If you are in FORM C Toggle output pulse mode,
and your pulse receiving device uses only two wires, and the pulse receiving
device only counts the output’s contact closure as a pulse(not the opening),
then the 3-Wire pulse value must be doubled in the Pulse Receiving Device. Red
and Green Output LEDs show the pulse output status. See additional information
on Page 5. Use the Output Form box, select “C” in the pulldown and click <Send
Parameters>.
Use the Output Form box to enter “A” to select the FORM A Fixed mode. In the
Fixed mode, only the K-Y output is used. This is the standard 2-Wire system
where the output contact is normally-open until such time as a pulse is
generated. When a pulse is generated, the contact is closed for the fixed time
interval, in milliseconds, selected in the Form A Width box. Form A mode is
generally associated with Energy (kWh) measuring systems. Select “A” in the
Output Form pulldown box and click
Set the Form A Pulse Width (Closure Time)
If you are using the MPG-3SC in the Form A (Fixed) Mode, set the output
closure time or pulse width, selectable at 25ms, 50mS, 100mS, 200mS, 500mS or
1000mS (1 second) using the Foam A Width box. Upon a pulse being generated,
the K-Y terminals of each output will close for the selected number of
milliseconds and light the RED Output LED only. This setting applies only to
the Form A output mode, and does not affect the toggle output mode. Use the
shortest closure time possible that will be reliably received by the pulse
receiving equipment, so as not to unnecessarily limit the output’s maximum
pulse rate. Select the desired pulse width from the pulldown in the Form A
Width box and click
Energy Adjustment Algorithm
The MPG-3SC contains a high-accuracy Energy Adjustment algorithm which keeps
track of the total amount of energy received in the transmissions from the
meter and also the total amount of energy represented by the pulses which have
been generated. Once an hour, the two values are compared and an adjustment is
made if necessary to true up the energy represented by pulses to the energy
reported from the meter. Set the Energy Adjustment box to Enabled and click
Dongle Monitor Modes
There are three dongle readout modes available on the MPG-3SC: Normal, Echo
and EAA. This determines what information is shown in the monitor box on the
right of the screen when you are in the monitor mode. The Normal Mode is the
default and shows you the time stamp, the demand, the internal multiplier and
the divisor coming from the meter every 8 seconds. Select Normal in the Dongle
Mode box and click
The Echo mode allows you to view the entire transmission string coming from
the meter the way it is received by the MPG3SC’s microcontroller from the
dongle in ASCII format. This mode may be useful in troubleshooting in the
event of intermittent transmissions from the meter. Select Echo in the Dongle
Mode box and click
The EAA mode allows you to view the adjustments made by the Energy Adjustment
Algorithm. This mode may be useful in observing how often the Accumulated
Energy Register is adjusted based on differences between the number of pulses
outputted and the energy accumulated from transmissions from the meter.
Readouts in this mode happen very rarely so it can easily be assumed that
nothing is happening. Select EAA in the Dongle Mode box and click <Send
Parameters>.
Reading back all Programmable Parameters
To view the values of all programmable settings that are currently programmed
into the MPG-3SC, click on
Reset All Setting to Factory Defaults
If you find that you want to reset all parameters back to the factory
defaults, simply pull down the file menu and select “Reset Factory Defaults.
The following parameters will default back to the factory settings as follows:
Multiplier=1
Pulse Value: 10 Wh
Viewing the Firmware Version
The version of firmware in the MPG-3SC is displayed in the upper left hand
corner of the SSI Universal Programmer, and will read something similar:
Your are connected to: MPG3 V3.07
Monitoring the MPG-3SC using the SSI Universal Programmer
In addition to programming the MPG-3SC you can also monitor the communications
or the data being received from the Zigbee module. Select the mode in the
Dongle Mode box and click
Once you have made the dongle mode selection, click on the Monitor button. The
left side of the SSI Universal Progarmmer will be grayed out and the
Monitoring box on the right-hand side of the window will begin showing
transmissions each time they are received. You cannot change settings of the
MPG-3SC while the SSI Universal Programmer is in the Monitor mode.
To go back to Programming mode, click on the Stop Monitoring button.
End-Of-Interval Capability
Select the EOI Interval Length (Min) and EOI Pulse Width (mS) in their
respective pulldown menus and click on
Bi-Directional Energy Flow (Signed Mode)
If you have energy flowing in both directions in the case of distributed
energy resourses (solar, wind, etc), the MPG-3SC can provide both positive and
negative pulses. This is known as the Signed mode, meaning that “kWh
Delivered” (from the utility to the customer) is positive or forward flow, and
“kWh Received” (from the customer to the utility) is negative or reverse flow.
The Pulse Value Setting is the same for both positive and negative values.
To set the Output Mode into the MPG-3SC, enter either Normal or Signed in the
Output Mode box, and press
Form C Signed mode – A positive energy value received from the meter is added
to the positive Accumulated Energy Register(+AER). Negative energy values
received are ignored. Only Form C toggle pulses are generated on the KYZ
output for Positive energy flow. See Figure 3 below.
Form A Signed mode – A positive energy value received is added to the positive
Accumulated Energy Register(+AER). A negative energy value received is added
to the negative Accumulated Energy Register(-AER). When either register equals
or exceeds the Pulse Value setting, a pulse of the corresponding sign is
outputted on the correct line. Pulses in this mode are Form A (2-wire) “Fixed”
only. K-Y pulses are Positive pulses and K-Z pulses are negative pulses. They
share a common K terminal on the output. Set the pulse value using the Pulse
Value box. Set the pulse width using the Form A Width box. See Figure 4
below.In
Signed mode, with a Form C output mode selected, the K-Y and K-Z output pulses
represent positive (or kWh Delivered) energy; Negative (or kWh Received)
energy is ignored.In Signed mode, with a Form A output mode
selected, the K-Y output pulse represents positive (or kWh Delivered) energy;
K-Z output pulse represents negative (or kWh Received) energy.
Programming with a Terminal Program
The MPG-3SC can be programmed using a terminal program like Tera Term, Putty,
Hyperterminal or ProComm. Set the baud rate for 57,600, 8 bit, 1 stop bit and
no parity. Be sure that the Receive is set for CR+LF and turn on Local Echo.
List of MPG-3SC Commands (?)
For help in selecting or using the serial commands with the MPG-3SC, simply
press the ? key. The serial link on the MPG3SC will return a full list of the
commands.
mXXXXX
pXXXXX
‘r
‘s0
‘s1
‘c0
‘c1
‘d0
‘d1
‘d2
‘wX
‘eX
‘iX
‘aX
‘KMODYYRHRMNSC
‘z
‘v
Form A Pulse Width
‘wX
‘w0
‘w1
‘w2
‘w3
‘w4
‘w5
EOI Form A Pulse Width
‘eX
‘e0
‘e1
‘e2
‘e3
‘e4
‘e5
‘e6
‘e7
‘e8
EOI Interval Length
‘iX
‘i1
‘i2
‘i3
‘i4
‘i5
‘i6
‘o0
SSI Universal Programmer
The SSI Universal Programmer is a windows-based programming utility for the
MPG Series and other SSI products. Download the SSI Universal Programmer from
the SSI website at
www.solidstateinstruments.com/sitepages/downloads.php.
There are two versions available for download:
Windows 10 and Windows 7 64-bit Version 1.0.8.0
Windows 7 32-bit V1.0.8.0
If you are using Windows 7, check your computer first to insure you download
the right version.
AUX PULSE ISOLATION RELAY INSTRUCTION SHEET
‘-R22
Elite Solid State PULSE INPUT CONNECTIONS – Connect the K terminal of each
meter which is supplying pulses to the K1in and K2in terminals. Connect each
meter’s Y and Z terminals to the respective meter’s Yin and Zin input
terminals of the ‘-R22.
INPUT SELECTION – The ‘-R22’s inputs may be used as either 2-Wire (Form
A) or 3-Wire (Form C). Use the Kin and Yin terminsal for Form A (2-Wire), or
all three terminals for Form C (3-Wire).
FUSES – The fuses are type 3AG and may be up to 1/2 Amp in size. Two 1/2
Amp fuses (F4& F5) are supplied standard with the unit unless otherwise
specified.
OUTPUTS – Two 3-wire isolated outputs are provided on the ‘-R22, with AUX
output terminals K1, Y1 & Z1 and K2, Y2, & Z2. Arc suppression for the
contacts of the solid-state relays is provided internally. Each relay
channel’s input and output are independent and isolated from the other. Inputs
may be parallelled if a “splitting” or duplicating relay function is desired.
SOLID STATE INSTRUMENTS
a division of Brayden Automation Corp.
6230 Aviation Circle, Loveland Colorado 80538
Phone: (970)461-9600
E-mail:
support@solidstateinstruments.com
References
- Solid State Instruments – Pulse Isolation Meter Relays & Specialty Products
- Solid State Instruments – Programmer Downloads