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MerCs ME-PM-M4-5, User Manual

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MerCs ME-PM-M4-5 User Manual Download Page 19

02 4047 0777

www.mercs.com.au

02 4047 0788

19

Strider M4 V2

 ME-PM-M4-5

MerCs Pty Ltd, 55 Pendlebury Rd, Cardiff, NSW, 2285, Australia | 2019 V1.1

Interfaces for External Monitoring

Three interfaces are provided:

• 

RS485 communication channel that can be programmedfor Modbus RTU protocol

• 

Relay output indicating real-time measured energy.(configurable)

• 

Pulse output 3200imp/kWh (not configurable)

The Modbus configuration (baud rate etc.) and the pulse relay output assignments (kW/kVArh, import/export etc.) are configured through the set-up 
screens.

Pulse Output

The pulse output can be set to generate pulses to represent kWh or kVArh.
Rate can be set to generate 1 pulse per:
0.01 = 10 Wh/VArh
0.1 = 100 Wh/VArh
1 = 1 kWh/kVArh
10 = 10 kWh/kVArh
100 = 100 kWh/kVArh
1000 = 1000 kWh/kVArh

Pulse width 200/100/60 ms.
Relay Rating 240V ac 50mA

RS485 Output for Modbus RTU

For Modbus RTU, the following RS485 communication parameters can be configured from the set-up menu:

Baud rate 2400, 4800, 9600, 19200, 38400
Parity none (default) / odd / even
Stop bits 1 or 2
RS485 network address nnn – 3-digit number, 1 to 247

Modbus

TM

 Word order Hi/Lo byte order is set automatically to normal or reverse. It cannot be configured from the set-up menu.

Reference Conditions of Influence Quantities

Influence Quantities are variables that affect measurement errors to a minor degree. Accuracy is verified under nominal value (within the specified 
tolerance) of these conditions.

Ambient temperature

23°C ±1°C

Input frequency

50 or 60Hz ±2%

Input waveform

Sinusoidal (distortion factor < 0·005)

Auxiliary supply voltage

Nominal ±1%

Auxiliary supply frequency

Nominal ±1%

Auxiliary supply waveform (if AC)

Sinusoidal (distortion factor < 0·05)

Magnetic field of external origin

Terrestrial flux

Summary of Contents for ME-PM-M4-5

Page 1: ...wires 3p4w supplies including voltage frequency current power active and reactive energy imported or exported Energy is measured in terms of kWh kvarh Maximum demand current can be measured over preset periods of up to 60min utes In order to measure energy the unit requires voltage and current inputs in addition to the supply required to power the product The requisite current input s are obtained...

Page 2: ...tart up Screens Measurements The buttons operate as follows After a short delay the screen will display active energy measurements Current Transformer Primary Current RS485 Serial Modbus RTU Pulse output Strider M4 V2 Series is CT operated you will need to set the correct ratio As an example If using 100 5A CT you will need to insure CT2 Secondary is set to 5 and CT rate is 0020 You divide the pri...

Page 3: ...sive press of the button selects a new parameter Phase to neutral voltages Current on each phase Phase to neutral voltage THD Current THD for each phase U IESC 1 2 3 4 Frequency and Power Factor total Power Factor of each phase Maximum Power Demand Maximum Current Demand Frequency and Power Factor and Demand Each successive pressing of the button selects a new range M ...

Page 4: ...Export active energy in kWh 2 1 Import reactive energy in kVArh 2 2 Export reactive energy in kVArh Energy Measurements Each successive pressing of the button selects a new range 1 2 3 4 Instantaneous Active Power in kW Instantaneous Reactive Power in kVAr Instantaneous Volt Amps in KVA Total kW kVArh kVA Power Each successive pressing of the button selects a new range P E ...

Page 5: ...until the password screen appears Setting up is password protected so you must enter the correct password default 1000 before processing If an incorrect password is entered the display will show PASS Err To exit setting up mode press repeatedly until the measurement screen is restored E U IESC Set up Entry Methods Some menu items such as password and CT require a four digit number entry while othe...

Page 6: ...o a high er menu level The SET indicator will be removed and you will be able to use the and buttons for further menu selection E M P M P E U IESC U IESC M P When setting up the unit some screens require the entering of a number In particular on entry to the setting up section a password must be entered Digits are set individually from left to right The procedure is as follows 1 The current digit ...

Page 7: ...stralia 2019 V1 1 2 2 Use and to set the first digit and press to confirm your selection The next digit will flash 2 3 Repeat the procedure for the remaining three digits 2 4 After setting the last digit SET will show M P E Press to exit the number setting routine and return to the Set up menu SET will be removed U IESC ...

Page 8: ...er readings are integrated for maximum demand measurement The options are off 5 8 10 15 20 30 60 minutes 1 From the set up menu use and buttons to select the DIT option The screen will show the cur rently selected integration time 2 1 Press to enter the selection routine The cur rent time interval will flash 2 2 Use and buttons to select the time required 2 3 Press to confirm the selection SET ind...

Page 9: ... Set up menu use and buttons to select the System option The screen will show the currently selected power supply supply Press to enter the selection routine The cur rent selection will flash Use and buttons to select the required system option 1P21P2 W 3P33P3 W 3P43P4 W Press to confirm the selection SET indicator will appear M P E M P E Press to exit the system selection routine and return to th...

Page 10: ...0001 to 9999 M P E E CT Settings The CT option sets the secondary current CT2 1A or 5A of the current transformer CT that wires to the meter For example if using a 100 5A current transformer you will enter 0020 as you need to divide the primary by the secondary to get the ratio CT rate Please note for the MID approved version device you will only have one opportunity to set the ratio From the Set ...

Page 11: ...buttons to choose kWh or kV A rh M P Pulse output This option allows you to configure the pulse output The output can be set to provide a pulse for a defined amount of energy active or reactive Use this section to set up the pulse output Units Total kW h Total kV A rh Secondary CT setting Press to enter the CT secondary current selection routine routine 5A 1A Set CT Ratio value Press to enter the ...

Page 12: ...0 1000 kWh kV A rh per pulse E E M M P P Use and buttons to choose pulse rate On Completion of the entry procedure press to confirm the setting and press to return to the main set up menu U IESC Pulse rate Use this to set the energy represented by each pulse Rate can be set to 1 pulse per 0 01kWh 0 1kWh 1kWh 10kWh 100 1000 kWh It shows 1 impulse 10kWh kVArh Pulse Duration The energy monitored can ...

Page 13: ...s to choose pulse width E E M M P P On completion of the entry procedure press to confirm the setting and press to return to the main set up menu U IESC RS485 Address Communication There is a RS485 port can be used for communication using Modbus RTU protocol For Modbus RTU parameters are selected from Front panel The range is from 001 to 247 From the Set up menu use and buttons to select the Addre...

Page 14: ...to select the address value Press button to enter the selection routine The current setting will be flashing Secondary address 00 00 00 01 to 99 99 99 99 E M M P P On completion of the entry procedure press button to confirm the setting and press button to return the main set up menu E U IESC M Bus Address On completion of the entry procedure press button to confirm the setting and press button to...

Page 15: ...ll flash Use and buttons to choose Baud rate 2 4k 4 8k 9 6k 19 2k 38 4k M P E Baud Rate The PT option sets the secondary voltage PT2 100 to 500V of the Voltage transformer PT that wires to the meter M P On completion of the entry procedure press to confirm the setting and press to return to the main set up menu E U IESC Parity From the Set up menu use and buttons to select the Parity option Press ...

Page 16: ...confirm the setting and press to return to the main set up menu M P E E Stop bits From the set up menu use and buttons to select the stop bit option Press to enter the selection routine The cur rent setting will flash Use and buttons to choose stop bit 2 or 1 Note Default is 1 and only when the parity is NONE that the stop bit can be changed to 2 M M P P E Backlit set up Default 60 If it s setted ...

Page 17: ...o return to the main set up menu U IESC E Press to confirm the setting and press to return to the main set up menu U IESC E Specifications Measured Parameters The unit can monitor and display the following parameters of a single phase two wire 1p2w 1p2w three phase three wire 3p3w or four phase four wire 3p4w system Voltage and Current Phase to neutral voltages 100 to 289V a c not for 3p3w supplie...

Page 18: ...00 MVA Maximum demanded power since last Demand reset Power factor Maximum neutral demand current since the last Demand reset for three phase supplies only Accuracy Imported Exported active energy 0 to 9999999 9 kWh Imported Exported reactive energy 0 to 9999999 9 kVArh Total active energy 0 to 9999999 9 kWh Total reactive energy 9999999 9 kVArh Voltage 0 5 of range maximum Current 0 5 of nominal ...

Page 19: ...h Pulse width 200 100 60 ms Relay Rating 240V ac 50mA RS485 Output for Modbus RTU For Modbus RTU the following RS485 communication parameters can be configured from the set up menu Baud rate 2400 4800 9600 19200 38400 Parity none default odd even Stop bits 1 or 2 RS485 network address nnn 3 digit number 1 to 247 ModbusTM Word order Hi Lo byte order is set automatically to normal or reverse It cann...

Page 20: ...e temperature 40O C to 70O C Relative humidity 0 to 95 non condensing Altitude Up to 3000m Warm up time 1 minute Vibration 60068 2 6 2g Shock 30g in 3 planes DIN rail dimensions 72 x 94 5 mm WxH per DIN 43880 Mounting DIN rail DIN 43880 Sealing Ip51 indoor Material Self extinguishing Ul94 V 0 Maximum operating and storage temperatures are in the context of typical daily and seasonal variation Dime...

Page 21: ...1 S1 S2 P1 P2 S1 S2 3 PHASE 4 WIR E 15 16 3 PHAS E 3 WIRE 17 18 1 PHASE 2 WIR E 19 20 15 16 17 18 19 20 MEASURED VOLTAGE CURRENT INPUTS MEASURED VOLTAGE MEASURED VOLTAGE CURRENT INPUTS CURRENT INPUTS Press to exit the D IT selection routine and return to the menu Warnings Important Safety Information is contained in the Maintenance section Familiarize yourself with this information before attempti...

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