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5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201  Fax: +81(6)6659-8510  E-mail: [email protected]

EM-6485-A  Rev.15  P. 1 / 8

INSTRUCTION MANUAL

MULTI POWER MONITOR

(4 digital displays)

MODEL

53U

BEFORE USE ....

Thank you for choosing M-System.  Before use, please check 
contents of the package you received as outlined below.
If you have any problems or questions with the product, 
please contact M-System’s Sales Office or representatives.

 

PACKAGE INCLUDES:

Multi power monitor 
(Body + Mounting bracket × 2 + gasket)............................(1)

 

MODEL NO.

Confirm Model No. marking on the product to be exactly 
what you ordered.

 

INSTRUCTION MANUAL

This manual describes necessary points of caution when 
you use this product, including installation, connection and 
basic maintenance procedures.
For detailed explanations to operate and program the mod-
ule, please refer to Model 53U Operating Manual (EM-
6485-B).
The 53U is programmable either by using the front control 
buttons or the PC Configurator Software.  For detailed in-
formation on the PC configuration, refer to the PMCFG us-
ers manual.
Software and manuals are downloadable at M-System’s 
web site: http://www.m-system.co.jp

 

INTENDED USE

This equipment is a digital panel meter which measures 
simultaneously several variables of a heavy-current power 
system: current, voltage, active, reactive and apparent pow-
er, active and reactive energy, power factor, frequency, etc.

 

SYMBOLS USED ON THE PRODUCT AND IN THIS MANUAL

This symbol on the product indicates that the operator 
must refer to an explanation in the user’s manual in order 
to avoid the risk of injury or death of personnel or damage 
to the instrument.

This symbol indicates double insulation.

      POINTS OF CAUTION

 

CAUTION 

• If Equipment is not used in a manner not specified by 

M-System, the protection provided by the equipment may 
be impaired.

 

CONFORMITY WITH EU DIRECTIVES OR UL

• This equipment is suitable for Pollution Degree 2, Meas-

urement Category III (input, transient voltage 6000V)
and Installation Category II (auxiliary power, transient 
voltage 2500V).

  And insulation class of this unit is as following.
  Input to Auxiliary power supply: Reinforced insulation (550V)
  Output to Auxiliary power supply: Reinforced insulation (300V)
    Output to Input: Basic insulation (550V)
   Prior to installation, check that the insulation class of 

this unit satisfies the system requirements.

• The equipment must be mounted inside a panel.
• Altitude up to 2000 meters.
• Insert a noise filter for the power source connected to the 

unit.  Cosel Noise Filter Model NAC-06-472 or equivalent 
is recommended.

• The equipment must be installed such that appropriate 

clearance and creepage distances are maintained to con-
form to CE/UL requirements.  Failure to observe these 
requirements may invalidate the CE/UL conformance.

• The actual installation environments such as panel con-

figurations, connected devices, connected wires, may af-
fect the protection level of this unit when it is integrated 
in a panel system.  The user may have to review the CE 
requirements in regard to the whole system and employ 
additional protective measures to ensure the CE conform-
ity.

• For safety, be sure to install a circuit breaker switch as 

part of the building installation that conforms to IEC 
60947-2 near the 53U so as to be operated easily, and 
clearly indicate that the device is used to de-energize the 
53U.  The circuit breaker must be provided on both side of 
the line or must be “common trip” type.

 

  AUXILIARY POWER SUPPLY RATING & OPERATIONAL 

RANGE

• Locate the auxiliary power supply rating marked on the 

product and confirm its operational range as indicated 
below:

    100 – 240V AC rating: 85 – 264V AC, 47 – 66 Hz, < 8 VA
     110 – 240V DC rating: 99 – 264V DC, < 4 W (UL ap-

proval is not available)

• For UL approved model, power input terminals are 

marked with L and N instead of U(+) and V(–). 

 

GENERAL PRECAUTION

• Before you remove or mount the unit, turn off the power 

supply and input signal for safety.

Summary of Contents for 53U

Page 1: ...VES OR UL This equipment is suitable for Pollution Degree 2 Meas urement Category III input transient voltage 6000V and Installation Category II auxiliary power transient voltage 2500V And insulation...

Page 2: ...age 0 3 0 2 for Option H Current 0 3 0 2 for Option H Power 0 5 Power factor 0 5 Frequency 0 1 Energy 1 0 5 for Option H Harmonic contents 1 Analog out put Accuracy of assigned measurand or 0 2 whiche...

Page 3: ...AX E PRG PF THD ENTER ESCAPE E PRG ESCAPE E PRG ESCAPE IU PQS PF THD Hold down IU Hold down Hold down Hold down Hold down Hold down NORMAL MODE Indicates values Indicates Voltage or Current Indicates...

Page 4: ...0 5 to 3 5 mm2 Stripped length 7 to 8 mm Contact input contact output analog output Modbus auxiliary power Applicable cable size 2 4 mm dia 0 5 to 2 5 mm2 Stripped length 7 to 8 mm CONNECTING TO POWE...

Page 5: ...1S 1L 3S 3L L1 source load L2 L3 k l K L V1 V2 V3 1S 1L L1 source load L2 L3 V1 N 1S 1L L1 source load N k l K L u v U V V1 N 1S 1L L1 source load N k l K L V1 N 1S 1L L1 source load N System Applica...

Page 6: ...gurator cable is left connected 3 For UL approved model L and N are marked instead of U and V To other Modbus devices EXTERNAL INTERFACE CODE 8 V U DO PO DO PO DI DI CONTACT INPUT CONTACT OUTPUT AO2 A...

Page 7: ...d ground them at single point 2 FG RS 485 SYSTEM CONFIGURATION EXAMPLES RS 485 Modbus RTU Multi Power Monitor model 53U RS 232 C RS 232 C RS 485 Converter model R2K 1 or LK1 Lightning Surge Protector...

Page 8: ...D74R or MDP 4R 1 AX IN AX IN AX IN Lightning Surge Protector for RS 485 422 model MD74R or MDP 4R 1 1 Insert lightning surge protectors recommended in this example if necessary ETHERNET RUN SEND FIELD...

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