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PZ Series programmable intelligent meters Current,Voltage Installation and Operation Instruction V2.0 ACREL CO.,LTD...
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No part of this publication may be reproduced,stored in a retrieval System,or transmitted in any form by any means,electronic,mechanical photocopying ,recording,or otherwise without prior permission of Acrel. All rights reserved. This company reserve power of revision of product specificationdescribed in this manual,without notice.Before ordering,please consult local agent for the new...
Contents 1 Summary..............................1 2 Type Description............................ 1 3 Technical parameter..........................2 4 Installing and wiring..........................3 4.2 Diagram of meter and its cut out....................3 4.3 Installing............................3 4.4 Terminals and wiring........................4 4.5 Notice............................6 5 Operating description..........................7 5.1 Key function description........................7 5.2 Programming menu........................
1. Summary PZ series programmable intelligent meters,adopting AC sampling technology,can directly or indirectly measure electric voltage and current of single phase or three phase grid. It can be used for local display,and connecting industrial control device to form measuring control system.
Between the shell and all set of terminals(except the set of terminals reference voltage less than 40V) AC 4kV Temperature Operation: -10℃~+55℃Storage: -25°C ~+70°C Environment Humidity ≤95%RH,no condensation,without corrosive gas Altitude ≤ 2500m 4 Installing and wiring 4.1 Outline and mounting cut out size (Unit: mm) Table 3 Shape Panel...
图 2 图 3 4.4 Terminals and wiring According to different design requirements,it is recommended to add a fuse (BS88 1A gG) to the power supply and voltage input terminals to meet the safety requirements of relevant electrical codes. 4.4.1 Terminals and wiring Analog wiring: Switching input wiring: Switching output or alarm wiring:...
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RS-485 wiring: Power wiring: FUSE Auxiliary Power Voltage or current wiring: single phase: 11 14 11 14 FUSE Current input Voltage input Three phase: Three phase voltage: 11 12 13 14 11 12 13 14 11 12 13 14 11 12 13 14 FUSES FUSES FUSES...
The input voltage must not be higher than the rated input voltage of the product ,otherwise PT should be considered A 1A fuse must be installed on the voltage input. 4.5.2 Current Input Current input shall use external CT; If the used CT connected with other meters,the connection should be used in series; It is recommended to use wiring board ,do not connected with CT directly,in order to remove conveniently;...
5.2 Programming menu 5.2.1 Menu symbol and its meaning table 5 First menu Second menu Third menu Description 0~9999 Password setting (initial password 0001) LCD backlight control,when set to 0,the backlight is always on,when set to 0~255 0-255,the backlight is off after 0-255 seconds ON/OFF Whether the screen flashes when alarming...
4~20mA 0~ Output type 20mA 0~9999 High analog value setting 0~9999 Low analog value setting 0.do/1.AL Alarm selection 0~20 Alarm delay or remote control delay (s) 0~9999 No action band setting 0~9999 High alarm value setting 0~9999 Low alarm value setting 0~100 Unbalance alarm setting (%) Whether alarm is allowed when the signal...
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Three phase: Enter the password with Press the SET key to enter Enter the programming left or right key the password interface interface 5.3.2 How to save the modified parameters Single phase: Press the Enter key to save the setting,or press the SET key to return to return Press the Enter key to save the settings...
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5.3.3 How to modify the password,backlight time etc. Single phase: Whether the screen Password setting Backlight setting flashes when alarming Three phase: Whether the screen Backlight setting Password settings flashes when alarming Use the left or right key Use the left or right key to to modify the password modify the backlight time.
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Three phase: Modify current rated value Modify current ratio Use the left or right key to modify the current rated value Use the left or right key to modify the current ratio Note: IN.I is the current rated value ,IN.U is the input voltage rated value; IN.CT is the current ratio,and IN.PT is the voltage ratio.
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图 6 图 7 DC meter setting H: DC high point display value; L: DC zero point display value,A.P (U.P): Display decimal point When the low point of the input is 0: For example:The input signal is 0-75mV,and the relative display needs to be 0-1000A,then the setting will be:H: 1000,L: 0,A.P: 0.So when the input is 37.5mV,the display will be 500 ((1000-0)*(37.5/(75-0))).
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5.3.6 How to modify the communication address,communication baud rate and communication mode Single phase: Modify baud rate Modify mode Modify address Three phase: Modify mode Modify address Modify baud rate Use the left or right key to Use the left or right Use the left or right key to modify the communication key to modify the...
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Single phase: Analog output selection Modify output type High value setting Low value setting Three phase: Analog output selection High value setting Modify output type High value setting Use the left or right key to Use the left or Use the left or Use the left or right modify the output key to modify the...
No action band setting High alarm value setting (do not set the maximum 9999) Low alarm value setting (do not set minimum 0) Whether low alarm is allowed when the signal is 0,Lo.on is enabled,Lo.of is forbidden Single phase: Alarm selection Alarm delay time No action band setting...
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Three phase Use the left or right Enter alarm key to modify the selection alarm:selection:0.do,1.AL Use the left or right key to modify alarm delay time,range:0-20 Alarm delay time Use the left or right key to modify no action band value No action band setting...
2.Unbalancecalculation (maximum value–minimum value)/rated value (average value is less than rated value) (maximum value–minimum value)/average value (average value is greater than or equal to the rated value) 5.4 View switching display and alarm status 5.4.1 View switching View the switching status of PZ96 (L) three-phase current meter (same three-phase voltage meter): View switching input/output Enter the password The 2nd line is switching input...
6.1 Summary PZ Series meter adopt Modbus-RTU protocol: "9600,8,n,1",in it 9600 is default baud rate,based on request,it can be revised as 2400,4800 ,19200 etc.,8 indicate have 8 data bit; n indicate no parity bit; 1 indicate have one stop bit.
6.2.2 Address domain Address domain: address domain is located at beginning of frame,composed of one byte (8 bit binary system domain),decimal system is 0-255,in our system,just 1-247 is used,other address is Reserved,these bits indicate terminal device address specified by users,this device will receive the connecting host computer data. Every terminal device has its only one address,only the addressing terminal is responding enquiry including this address.
4.If the least significant bit is 0,Repeat the third step (next shift); If the least significant bit is 1,CRC register and preset fixed value specified (0A001H) carry out exclusive or operation. 5.Repeat the third step and the fourth step until shift for 8 times,the complete 8 bit is done. 6.Repeat the second step to the fifth step to treat next 8 bit until all the byte is treated.
Three phase current 0067H Unit:A Single phase current 0068H IB current meter :only IA 0069H 006AH IC current 006BH Description: Voltage and current calculating method: (example see6.5.1Reading data) Reading = virtual value╳10E(exponent bit-3) Alarm switching input / output status Character: …...
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Meter display: 221.9 222.0 222.0 Reading voltage meter data is similar with that of reading current meter,but starting address is 06H,Query frame: 01 03 00 06 00 06 25 c9 Reading inquiry frames of other information is same as this format,each information address see: 6.4 communication parameter address meter.
7 Common fault analysis Table 9 Common Fault Analysis Fault content Analysis Remarks No display after power on Check Aux power voltage is within the range Voltage or current is incorrect Check the voltage/current ratio Check voltage transformer/current transformer is intact Communication failure Check whether the address,baud rate,check digit,etc.
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