AKCP PMS120-CT50 User manual

Power Monitor Sensor
Three Phase & CT Type
User Manual
Help Version updated till firmware 404p
Copyright © 2012, AKCess Pro Co., Ltd..

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What is the Power Monitoring Sensor?
The Power Monitoring Sensor or PMS as it will be referred to through the rest of this user manual
for DIN rail Three Phase four wire and Three Phase CT Type multi-tariff energy meter with
MODBUS protocol.
The PMS can only be connected to our securityProbe base units and not the sensorProbe units.
The PMS is compatible with the securityProbe 5E, 5ES, 5ES-X20/X60, 5ESV and 5ESV-X20 and
X60 base units. The PMS is connected to the securityProbe’s RS-485 port and uses the Modbus
protocol to communicate with the PMS.
Safety instructions
Information for Your Own Safety
This manual does not contain all of the safety measures for operation of the equipment (module,
device), because special operating conditions, and local code requirements or regulations may
necessitate further measures. However, it does contain information which must be read for your
personal safety and to avoid material damages. This information is highlighted by a warning
triangle and is represented as follows, depending on the degree of potential danger.
Operation of the equipment (module, device) described in this manual may only be performed
by qualified personnel. Qualified personnel in this manual means person who are authorized to
commission, start up, ground and label devices, systems and circuits according to safety and
Regulatory standards.
Use for the intended purpose
The equipment (device, module) may only be used for the application specified in the catalogue
and the user manual, and only be connected with devices and components recommended and
approved by Forlong.
Proper handling
The prerequisites for perfect, reliable operation of the product are proper transport, proper
storage, installation and proper operation and maintenance. When operating electrical
equipment, parts of this equipment automatically carry dangerous voltages. Improper handling
can therefore result in serious injuries or material damage.
�Use only insulating tools.
Warning
This means that failure to observe the instruction can result in
death, serious injury or considerable material damage.
Caution
This means hazard of electric shock and failure to take the
necessary safety precautions will result in death, serious injury
or considerable material damage.

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�Do not connect while circuit is live (hot).
Do not connect the meter to a 3 phase - 400VAC –network.
Place or install the meter only in dry surroundings.
Do not mount the meter in an explosive area or expose the meter to dust, mildew and
insects.
Make sure the wires are suitable for the maximum current of this meter.
Make sure the AC wires are connected correctly before activating the current/voltage
to the meter.
Do not touch the meter connecting clamps directly with metal, blank wire and your
bare hands as you may recieve an electrical shock.
Make sure the protection cover is in place after installation.
Installation, maintenance and reparation should only be done by qualified personnel.
Never break the seals and open the front cover as this might influence the function of
the meter, and will void the warranty.
Do not drop, or allow strong physical impact on the meter as the high precisely
components inside may be damaged.
Disclaimer
We have checked the contents of this publication and every effort has been made to ensure that
the descriptions are as accurate as possible.
However, deviations from the description cannot be completely ruled out, so that no liability can
be accepted for any errors contained in the information given. The data in this manual is checked
regularly and the necessary corrections are included in subsequent editions.
The Three Phase PMS can be mounted on a standard DIN rail (see above).

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Meter specifications:

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Three Phase PMS Readings
Each Three Phase PMS can be setup to monitor up to 14 separate values as follows;
For a 3 phase the following values can be measured
- 3 Voltages
- 3 Amps
- 3 Power Factor
- 3 Active Power
- 1 Frequency
- 1 Active Energy
Maximum Voltage and Current Ratings
If you need to monitor AC current over 100 amps of current, then you need to use the 3 Phase
CT-Type PMS and the CT’s or current transformers. These CT’s range from 100 to 4000 Amps.
Please see the Current Transformer data sheet for more information on the CT’s.
Maximum number of PMS per securityProbe
It is recommended to not connect more than 6 x Three Phase PMS to a single securityProbe
base units if you require to monitor all 14 readings of the Three Phase power lines.
Please see page #8 through #10 for the physical connections of the cabling and configuration
setup of more than one PMS on the securityProbe base unit.
VERY IMPORTANT: Please see pages #9 and #10 for the wire impedance
specifications and termination resisters that must be in place when installing
multiple PMS in one Modbus string.

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Installing / Connecting the Meters
We recommend that the connecting wire which is used to connect the meter to
the outside circuit should be sized according to local codes and regulations for
the amps of the circuit breaker or over current device used in the circuit.
An external switch or a circuit-breaker should be installed on the inlet wire, which
will be used as a disconnection device for the meter. And there it is
recommended that the switch or circuit-breaker is near the meter so that it is
more convenience for the operator. The switch or circuit-breaker should comply
with the specifications of the building electrical design and all local regulations.
An external fuse or thermal cut-off which will be used as a over-current protection
device for the meter must be installed on the supply side wire, and it is
recommended that the over-current protection device is near the meter so that it
is more convenience for the operator. The over-current protection device should
comply with the specifications of the buildings electrical design and all local
regulations.
This meter can be installed indoor directly, or in a meter box which is waterproof
outdoor, subject to local codes and regulations.
The meter has to be installed against a wall which is fire resistant.
The meter has to be installed in a good ventilated and dry place.
The meter can be installed on a 35mm DIN rail or direct on a meter board with
screws.
When the meter is installed in an area with frequent surges due to e.q.
thunderstorms, welding machines, inverters etc, protect the meter with Surge
Protection Devices.

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Connection Diagram
1/2 Ia IN/OUT
3/4 Ib IN/OUT
5/6 Ic IN/OUT
7 Neutral wire
8/12 Test pulse output contact (P+/P-)
9/12 Test pulse output contact (Q+/Q-)
10/11 RS485 communication contact (to securityProbe)
1/2 Ia IN/OUT
3/4 Ib IN/OUT
5/6 Ic IN/OUT
8 Neutral wire
18/16/14 Phase A/B/C
8/ 12 Test pulse output contact (P+/P-)
9/ 12 Test pulse output contact (Q+/Q-)
10/11 RS485 communication contact (to securityProbe)
Consumption indication
On the Three Phase and Three Phase CT-Type PMS’s front panel, there are five LED, respectively,
for the Active/Reactive energy
CT –Type PMS

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pulse light, Phase A/B/C . The constant of the impulse is shown on the nameplate of the meter.
Reading the meter
The Three Phase PMS and CT-Type PMS is equipped with 6+2 LCD display. which is used as
recording Active/Reactive consumption and can’t be reset to zero and other power Parameters
include U/I/P/Q/S/PF. Thenumber system is based on units of 10. And unit is kWh
Meters display three status: self-inspection status, cycle display status and program status.
Self-inspection status：meters will come into self-inspection status after connect with electricity.
theself-inspection includes: full screen 、software version number 、meter serial number and
communication baud rate. every screen display time is 1 second.

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The Meter can display 32 items as above mentioned. The display time of every item is 5
seconds.
You can only setup the CT after the meter is connected to electricity. If the“”disappeared on
LCD, it means you cannot change the CT setting, when the “ ”display on LCD, you
can program the setting of the CT. if there is no symbol on the LCD display, programming
is forbidden。

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CT Type PMS - Changing-Ratio setting
How to set the CT Changing- Ratio of the CT Type Meter
Please set the CT Changing-Ratio after installation otherwise the CT Meter will count the second
energy consumption by default Ratio ( 5:5).
Procedures of setting the CT Changing- Ratio of the CT Meter:
1. Press the PRG button after auto-detect, then you can set the CT changing- ratio. The LCD
shows
2. Press the SEL button, and there are 27 Ratios (“5:5” to “7500: 5” ) you can choose from.
Example Secondary CT ration is 75:5
3. After choosing one CT Changing-Ratio, press the PRG button to confirm and the ration setting
is complete. The “ ”disappears.
4. If do not set up the ”SEL” button in 10 seconds, the meter will turn to cycle status
automatically。
The “ ” will disappear on LCD after 60 seconds，The setup of the CT will be forbidden If you
forget to close the switch of the program the meter will close the program operation
automatically after 60mins, the“ ”will disappear on LCD.

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NOTE: In the sense of security, setting the CT changing-ratio can only be done after the power is
on. Any related operation will be null after disappears .
Connecting to the securityProbe and Ports 9 and 10 (RS485)
Connect two wires/twisted pair from ports 9 and 10 to the terminal block on the
securityProbe RS485 port.
The AKCP PMS uses the Modbus connection (RS485) port on the rear of the
securityProbe (note your rear panel may differ depending on the model of securityProbe
you have) Using a pair of wires from ports 9 and10 on the PMS (see wiring diagram) to
the terminal block on your securityProbes RS485 port. VERY IMPORTANT: On the
interconnection between the +/- on the securityProbe unit and the A B on the PMS, The
A goes to - while the B goes to + .
VERY IMPORTANT NOTE: You need to connect the AC POWER TO THE PMS
FIRST before connecting it to the securityProbe base unit and adding the meter to the
web interface.
The PMS should ONLY be installed by a qualified Electrician
Engineer who is also familiar with Modbus.
RS485 Cabling and Run Length
All Modbus manufacturers recommend a cable with 120Ohm characteristic impedance
or higher so we highly recommend that you use shielded AWG 24 twisted pair copper
wire and this cable has an impedance of at least 120Ohm, most importantly when
connecting multiple PMS to a single base unit. The maximum cable length is
determined by the combination of cable length (in meters) and data signaling rate. The
data signaling rate on the power meter is 9600 bps (bits per second), so the maximum
cable run length for this cable is roughly 300 meters, or 1000 feet.
Connecting Multiple PMS to a single securityProbe base unit

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As mentioned, it is possible to connect multiple PMS’s to a single securityProbe base
unit. We do not recommend connecting more than 14 Single Phase PMS to a single unit.
It is also VERY critical that you are using at least 120Ohm impedance shielded twisted
pair cable as mentioned above including the termination resisters described below.
The terminal resistors should always match the impedance of the installation cables.
As shown in the diagram above you will need to use the cable and terminal resistors in
the Modbus line as recommended by the Modbus standard. That is: a 120 Ohm
impedance cable, 120 Ohm (0.25W) termination resistor + 0.1nF capacitor at the end of
the line.
- The SEC has a polarized line implemented
- Use the jumper aside the connector for 120 Ohm terminal resistor at the SEC side
(inside RS485 port), if the jumper is used, you must not add a terminal resistor at the
SEC side.
- If cable characteristic impedance differs from 120 Ohm, terminal resistors should match
the same impedance.
- the two ends of the cable must be connected on Line Terminations.
If you have any questions about this please consult with your engineer or contact us at
[email protected]m
Adding each PMS to the securityProbe’s web interface
When adding the multiple PMS to the web interface in the securityProbe base unit you
have to add each PMS one at a time then change the ID from "1" to a different ID. Scan
again then change "1" to a unique ID (like PMS1, PMS2) and so on.
You will need to use the following procedures to pre-configure the multiple PMS’s:
1. Start by connecting only one PMS, run the scan ID, set this PMS to ID 1, and then
remove this PMS both physically and from the web interface. This will hard code the

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PMS as ID 1.
2. Connect the second PMS, run the scan ID, set this PMS to ID 2, and then remove this
PMS both physically and from the web interface. This will hard code the PMS as ID 2.
3. Connect the third PMS, run the scan ID, set this PMS to ID 3, and then again remove
this PMS, both physically and from the web interface. This will hard code the PMS as ID
3.
4. Repeat this procedure with all PMS's you plan on connecting.
Note: This will guarantee all of the PMS's in the daisy chain will function normally
without any problem and insure there are no duplicate PMS ID numbers in the chain.
5. After you have completed the pre-configurations of all of your PMS’s that you are
going to connect, then reconnect each of them again in the same numerical sequence
as you previously configured them with. Start with PMS ID 1 and PMS ID 2. If these are
working OK, then you can connect the other PMS’s in the string.
Note: Connect PMS ID 1 and PMS ID 2 on the same bus. Take caution that RS485 A
and RS485 B should not be swapped.
Basic Setup Of your PMS
Once you have connected your PMS unit to the securityProbe and you have ensured
correct power connection to the PMS, navigate to the web interface of your
securityProbe. You should be bought to summary page :-
After you have clicked the "Sensors" tab you will be bought to the sensor settings page:-

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This will now bring you to the "Scan Meter" page, follow the directions below for a quick setup:-
Once the AC Power has been connected to the PMS and the meter has been connected to the
units RS-485 port click on the “Start” to begin scanning for the attached PMS as shown in the
screen shot above.

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You can also add the meter manually by clicking on the “Add Meter” button as shown in
the screen shot above. The meters ID number will be from 1 to 256.
You can also change a meters ID number using the “Change Meter ID” button as shown
in the screen shot above.

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Once the scan has begun any connected PMS units will be detected and added and put
online as shown in the screen shot above. You can enter your Scan range if you know
the amount of meters you will be adding.You can stop the scan at any time by clicking
on the “Stop” button.
You will now be taken to the meter settings page where you can enable each of the
separate values you want to monitor. First click on the “Online Sensor” button as shown

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above.
In the next screen you can enable all the values by adding a check in each of the check
boxes that represent each of the listed values. Then you would click on the “Next” button
to continue as shown in the screen shot above.

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In the next screen you can setup your Polling Interval times and retry times as shown
above.
Polling Interval -Here you can select how often the securityProbe polls information from
the PMS unit.
Connection Time out- This option allows you to adjust the time (in seconds) the
securityProbe will wait for a response from the PMS before timing out.
Retry - You can set the number of times the securityProbe will retry after a timeout has
occurred.
After adding all the values you require you will be returned to the PMS main settings
page which will now show the list of values or sensors, each reading and status. It may
take a few minutes for the readings to be updated depending on how many PMS you
have connected.
How to setup each of the sensor or value thresholds will be shown on the next page.
However to open the sensor threshold page simply click on the links in the Sensor Name
column in the left side of the Power Meter page.

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Now you are able setup each of the sensors or value thresholds as shown in the screen
shot above.
If you have the 3 phase PMS connected to each of the 3 phases of the AC lines each
Phase Line will be shown in the PMS Menu column as shown in the screen shot above.

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Replacement Procedures for previous type PMS with new type
Please use the following steps if your replacing an old type PMS with this new type
PMSFL in the same Modbus string.
1. Check and take note the new PMSFL meter's LCD to see what is its current Modbus ID and
also the old type PMS that it will be replacing.
2. Connect the new PMSFL power meter to a SEC's RS485 bus which doesn't have the ID noted
in step #1 and the ID which the PMS will be changed to (old PMS ID).
3. Use the SEC UI to change the new PMSFLS's ID to the old PMS ID that it will replace.
4. Delete the old power meter from the securityProbe’s web UI (disable the meter and remove
the meter)
5. Physically replace the old power meter with the new PMSFL meter in the string.
6. Add the new power meter manually or Scan with add the meter automatically from the web
UI.
7. Turn online the sensor readings required. Only turn online 4 readings or less at a time before
saving.