forlong PM835 User manual

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PM835 User Manual
Power Control Electricity Monitoring System
Power Safe Programmable Management Relay
Forlong Power Intelligent Power Meter
Mini Power Mini Power Energy Meter
HPD Harmonic Protection Device

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Content
Panel Meter Specifications ……………………………………………………………………….... 3
Panel Meter Operation Manual …………………………………………………………………….. 7
Dimension………………………………………………………………………………………....20
Wiring Diagram………………………………………………………………………………....…21
Installation………………………………………….………………………………………….…..22
C o n t ac t … …… … … …… … …… … … … …… … …… … … …… … …… … … …… … … … …… … . 24

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PM835 Panel Meter Specification
1 Safety Instruction
1.1 Information for Your Own Safety
This manual does not contain all of the safety measures for operation of this
equipment (module, device) because special operating conditions, local code
requirements or local regulations may necessitate further measures. However, it
does contain information which must be adhered to for your own personal safety
and to avoid damage to the equipment. This information is highlighted by a warning
triangle with an exclamation mark or a lightning bolt depending on the severity of
the warning.
Warning
Means that failure to observe the instruction can result
in death, serious injury or considerable material
damage.
Caution
Means hazard of electric shock and failure to take the
necessary safety precautions will result in death,
serious injury or considerable material damage.
1.2 Qualified personnel
Installation and operation of this equipment described in this manual may only be
performed by qualified personnel.
Only people that are authorized to install, connect and use this equipment and have
the proper knowledge about labeling and grounding electrical equipment and
circuits and can do so according to safety and regulatory standards are considered
qualified personnel in the manual.
1.3 Use for the intended purpose
The equipment (device, module) may only be used for the application cases
specified in the catalog and the user manual and only in connection with devices and
components recommended and approved by Forlong.
1.4 Proper handling
The prerequisites for perfect, reliable operation of the product are proper transport,
storage, installation and connection, as well as proper operation and maintenance.
When operating electrical equipment, certain parts of this equipment carry

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dangerous voltages. Improper handling can therefore result in serious injury or
material damage.
Only use isolated tools suitable for the voltages the meter is used for.
Do not connect while circuit is live (hot).
Place the meter only in dry surroundings.
Do not mount the meter in an explosive area or exposed to dust, mildew
and/or insects.
Make sure the used 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’s connection clamps directly with your bare hands,
with metal, blank wire or other conducting material as that will cause an
electric shock and possibly cause injury.
Make sure the protection cover is placed after installation.
Installation, maintenance and repair should only be done by qualified
personnel.
Never break the seals to open the front cover as this might influence the
functionality or accuracy of the meter, and will void all warranty.
Do not drop, or allow physical impact to the meter as there are high
precision components inside that may break and render the meter
measurement inaccurate.
2 Specifications
2.1 Voltage Inputs
• 20-280 Volts Line To Neutral, 20-480 Volts Line to Line
• Universal Voltage Input
• Input Withstand Capability – Meets IEEE C37.90.1 (Surge Withstand
Capability)
• Programmable Voltage Range to Any PT ratio
• Supports: 3 phase 3 or 4 wires, 400/230V, 110/63V,208/120V
• Burden: 0.36VA per phase Max at 600V, 0.014VA at 120 Volts
• Input wire gauge max (AWG 12 / 2.5mmPPPP
2
PPPP)
2.2 Current Inputs
• Class : (0 to 5) A, 5 Amp Nominal
• Fault Current Withstand: 100 Amps for 10 Seconds, 300 Amps for 3 Seconds,
500 Amps for 1 Second.
• Programmable Current to Any CT Ratio

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• Burden 0.005VA per phase Max at 11Amps
• 5mA Pickup Current
• Pass through wire gauge dimension: 0.177" / 4.5mm
• Continuous current withstand: 20 amps for screw terminated or pass through
current connections
2.3 Isolation
All Inputs and Outputs are galvanically isolated to 2500 Volts AC.
2.4 Environmental Rating
Storage: (-25 to +70)°C
Operating: (-10 to +65)°C
Humidity: to 75% RH Non-Condensing
Faceplate Rating: NEMA12 (Water Resistant)
Environment : IP54 standard, IP65 optional
Mounting Gasket Included
2.5 Sensing Method
• RMS
• Sampling at 120+ Samples per Cycle on all channels measured readings
simultaneously
• Harmonic %THD (% of Total Harmonic Distortion)
2.6 Update Rate
• Watts, VAr and VA-100msec
• All other parameters-1second
2.7 Power Supply
Option D2:
• (65 to 275) Volts AC and (90 to 380) Volts DC. Universal AC/DC Supply
Option D:
• 18-60VDC Burden: 10VA max.
2.8 Communication Format
• 2 Com Ports (Back and Face Plate)
• RS485 Port (Through Back Plate)
• Com Port Baud Rate: (1200 to 115200)
• Com Port Address: 0-247
• 8 Bit, No parity
• Modbus RTU Protocols

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2.9 KYZ Pulse
• Type Form A
• On Resistance: 23-35 Ohm
• Peak Voltage: 350 VDC
• Continuous Load Current: 120 mA
• Peak Load Current: 350mA (10ms)
• Off Stat Leakage Current @ 350VDC: 1 mA
• Opto-Isolation: 3750V (6 0Hz, 1min)
2.10 Meter Accuracy
• kWh Better than Class 1 per EN 62053-21 & BS 8431
• Kvarh Better than Class 2 per EN 62053-23 & BS 8431
• kW & kVA Better than Class 0.5 IEC 60688
• kvar Better than Class 0.5 IEC 60688
• Amps & Volts Class 0.2 IEC 60688 (0.01In – 1.2In or 0.1Un –1.2Un)
• PF ±0.2° (0.05In – 1.2In and 0.2Un –1.2Un)
• Neutral Current Class 0.5 IEC 60688 (0.05In – 1.2In)

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PM835 Operation Introduction
1. Two key mode
Each key has two operating mode. Firstly, the key press down and up
instantly. Secondly, the key press down about 2 second. The first mode, we call
it short-press mode. The second one, we call it long-press mode.
1.1 In measurement status, keys have the follow functions,
please refer to table 1.
Table 1 Keys function in measurement status
Key
Key mode
Function
Short press
Enter display volts amps picture
Short press
1.Picture number add 1
2.Enter display THD ,power factor and frequency
picture
Short press
1.Picture number sub 1
2.Enter display power picture
Short press
Enter display energy picture
Long press
Enter or exit auto display status
Long press
Enter or exit Max Demand status
Long press
No function
Long press
Enter parameter setting status

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1.2 In parameter setting status, keys have the follow
functions, please refer to table 2.
Table 2 Keys function in parameter setting status
Key
Key mode
Function
Short press
Picture number sub 1
Short press
1.Picture number add 1
2.Set the number add 1
Short press
1.Picture number sub 1
2.Set the number sub 1
Short press
Picture number add 1
Long press
exit current node
Long press
No function
Long press
No function
Long press
Enter next node

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2. Display pictures
2.1 If you want to see phase volts, line volts, phase amps
pictures.
Power up , you will see phase volts picture 1.
Step 1, short press ，you will see line volts picture 2.
Step 2, short press , you will see phase amps picture 3.
2.2 If you want to see system power factor, frequency, phase
power factor, volts Total Harmonic Distortion ,amps Total
Harmonic Distortion pictures.
System power factor
and frequency
(picture 4)
Phase power factor
(picture 5)
volts Total Harmonic
Distortion
(picture 6)
amps Total Harmonic
Distortion
(picture 7)
Power up , you will see phase volts picture 1.
Step 1 , short press , you will see system power factor and frequency picture 4;
Step 2 , short press , you will see phase power factor picture 5.
Step 3 , short press , you will see volts Total Harmonic Distortion picture 6.
Step 4 , short press , you will see amps Total Harmonic Distortion picture 7.
Phase volts (picture 1)
Line volts(picture 2)
Phase amps(picture 3)

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2.3 If you want to see phase watts, phase var, phase VA ,
system power pictures.
Phase watts
(picture 8)
Phase var
(picture 9)
Phase VA
(picture 10)
System power
(picture 11)
Power up , you will see phase volts picture 1.
Step 1 , short press , you will see phase watts picture 8;
Step 2 , short press , you will see phase var picture 9;
Step 3 , short press , you will see phase VA picture 10;
Step 4 , short press , you will see system power picture 11.
In every picture, you can see KWH energy, if you want to see
Kvarh energy , please short press .
（picture 12）

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2.4 If you want to see Time-average volts, Time-average amps,
Peak time-average volts, Peak time-average amps, Peak hold
phase volts, Peak hold phase amps pictures.
Time average volts
(picture 13)
Time average amps
(picture 14)
Peak time average volts
(picture 15)
Peak time average amps
(picture 16)
Peak hold phase volts
(picture 17)
Peak hold phase amps
(picture 18)
Power up , you will see phase volts picture 1.
Step 1 , long press , you will see time average volts picture 13;
Step 2 , short press , you will see time average amps picture 14;
Step 3 , short press , you will see peak time average volts picture 15;
Step 4 , short press , you will see peak time average amps picture 16;
Step 5 , short press , you will see peak hold phase volts picture 17;
Step 6 , short press , you will see peak hold phase amps picture 18.

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2.5 If you want to see Max system power factor and Max
frequency, Min system power factor And Min frequency, Volts
Sequence component, Amps sequence component picture.
Max system power
factor and Max
frequency (picture
19)
Min system power
factor And Min
frequency (picture
20)
Volts Sequence
component
(picture 21)
Amps sequence
component
(picture 22)
Power up , you will see phase volts picture 1.
Step 1 , long press , you will see time average volts picture 13;
Step 2 , short press , you will see Max system power factor and Max
frequency picture 19;
Step 3 , short press , you will see Min system power factor And Min
frequency picture 20;
Step 4 , short press , you will see Volts Sequence component picture 21;
Step 5 , short press , you will see Amps sequence component picture 22;

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2.6 If you want to see Power system demand, Min MD, Peak
hold MD, Min system power, Max system power pictures.
Power system
demand
(picture 23)
Min Demand
(picture 24)
Peak hold
Demand
(picture 25)
Min system power
(picture 26)
Max system
power
(picture 27)
Power up , you will see phase volts picture 1.
Step 1 , long press , you will see time average volts picture 13;
Step 2 , short press , you will see Power system demand picture 23;
Step 3 , short press , you will see Min Demand picture 24;
Step 4 , short press , you will see Max Demand picture 25；
Step 5 , short press , you will see Min system power picture 26;
Step 6 , short press , you will see Max system power picture 27;
If you long press , you will see pictures will auto display
one by one.

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2.7 If you want to see individual harmonics, please refer to the
below steps.
Step 1, long press , you will see (picture
28) ,if you input correct password (password is 1000) , press , the
password will change to 1000, then long press , you can enter into
parameter setting main menu (picture 29).
means that this parameter has child files(submenu) . means child file.
means parameter number.

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3. Setting parameter
3.1 Set relays status (parameter 0)
Control output relays
status(picture 30)
Output relay 1 type
Pulse or level(picture 31)
Output relay 1 pulse
width(picture 32)
Output relay 2 type
Pulse or level(picture 33)
Output relay 2 pulse
width(picture 34)
Step 1, long press , enter picture 30; long press , you can
set relays open or close.
Step 2, short press , enter picture 31; long press , you
can set relay 1 type.
Step 3, short press ,enter picture 32; long press , you
can set relay1 pulse width.
Step 4, short press enter picture 33; long press , you
can set relay2 type.
Step 5, short press enter picture 34; long press ,you
can set relay2 pulse width.
Long press you can exit current status……

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3.2 Set Modbus ID (parameter 1)
long press , you can set Modbus ID1-254;
3.3 Set RS-485 Baud Rate (parameter 2)
long press , you can set baud rate (1200, 2400, 4800, 9600, 19200,
38400, 115200)
3.4 Set PT , CT(parameter 3-6)
Set PT primary
(Parameter 3)
Set PT secondly
(Parameter 4)
Set CT primary
(Parameter 5)
Set CT secondly
(Parameter 6)
The PT1 can be set 100-500000;
The PT2 can be set 100-400;
The CT1 can be set 1-9999;
The CT2 can be set 1-10.

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3.5 Set backlight time (parameter 7)
Backlight time can be set from 5s to 65535s.
3.6 Set auto display time interval (parameter 8)
Time interval can be set from 500ms to 9999ms.
3.7 Clear energy KWh Kvarh
Clear Kwh(parameter 9)
Clear Kvarh(parameter 10)

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3.8 Set password (parameter 11)
3.9 Panel meter information (parameter 12)
Meter type
Version number
Software date
3.10 System type (parameter 13)( customer can’t use this
function)
3.11 Individual Harmonic (parameter 14)

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3.12 Set System connect status (parameter 15)
Set phase 1 current
forward
Set phase 2 current
forward
Set phase 3 current
forward
Set meter working
mode:
3phase 4 wire
3 phase 3 wire
Set hours run (on
roads)
Display hours
3.13 Set volts, amps, power period (parameter 16)
Set power period
(1-60min)
Set volts, amps period
(10-1800s)

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Dimension