Sfere PZ19 Series User manual

PZ19 Series Digital Display DC Voltmeter
PA19 Series Digital Display DC Ammeter
User’s Manual
The manual is applied to the following models：
PZ195U-2X1/3X1/5X1/AX1/9X1
PA195I-2X1/3X1/5X1/AX1/9X1
PZ195U-2K1/3K1/5K1/AK1/9K1/DK1
PA195I-2K1/3K1/5K1/AK1/9K1
PZ195U-2S1/9S1J
PA195I-2S1/9S1J
PZ195U-5XY1/AXY1/9XY1
PA195I-5XY1/AXY1/9XY1
PZ195U-5KY1/AKY1/9KY1
PA195I-5KY1/AKY1/9KY1
PZ195U-5SY1/ASY1/9SY1
PA195I-5SY1/ASY1/9SY1

Menu
1. Safety Instruction...................................................................................................1
2. Product instruction................................................................................................ 1
2.1 Overview.......................................................................................................1
2.2 Model selection............................................................................................. 2
3. Installation and wiring........................................................................................... 3
3.1 Outline dimension......................................................................................... 3
3.2 Installation method........................................................................................3
3.3 Wiring diagram............................................................................................. 4
4. Operation................................................................................................................ 5
4.1 Panel instruction............................................................................................5
4.2 Display.......................................................................................................... 5
5. Setting..................................................................................................................... 6
5.1 Reading mode............................................................................................... 6
5.2 Programming mode.......................................................................................8
5.3 System setting............................................................................................. 11
5.4 Input setting.................................................................................................11
5.5 Relay output setting.....................................................................................11
5.6 Analog output setting.................................................................................. 12
5.7 Communication setting............................................................................... 13
6. Common problems and troubleshooting..........................................................13
6.1 About communication................................................................................. 13
6.2 Measured data is not correct....................................................................... 14
6.3 Meter does not work................................................................................... 14
6.4 Other phenomena........................................................................................ 15
7. Technical specification....................................................................................... 15
Appendix 1 Alarm items and units of relative alarm threshold......................... 17
Appendix 2 Modbus-RTU Communication address information list................18
Modbus-RTU message format instruction........................................................... 19

1
1. Safety Instruction
Thank you for choosing the meter researched and developed by
Jiangsu Sfere Electric Co., Ltd. In order to ensure you to be convenient to
purchase and use the meter safely, correctly and efficiently, please read this
instruction carefully before using it, and make sure of paying attention to
several points as follows:
Make sure only the qualified technicians perform the installation and
maintenance
Before performing external or internal operation of the meter, make sure
the input signal and power supply are switched off.
The proper voltage detect device shall always be used to check there is
no voltage in every part of meter.
The electrical parameter supplied to the meter should be within the rated
range.
The following conditions may result in damage or abnormal
operation to the device
The voltage of auxiliary power supply goes beyond the range;
The frequency of power grid goes beyond rated range
◆Connecting terminal wires without following the requirements.
2. Product instruction
2.1 Overview
There are two series of DC digital meters which are PA19 series digital
display DC ammeter and PZ19 series digital display DC voltmeter. They are
used to monitor and control DC system. They also support limit alarm, analog
output, digital input, relay output and communication functions. All the
measured data and status can be read through RS485 communication
interface with Modbus-RTU protocol.
PA195I-□X□：Measurement
PA195I-□K□：Measurement + Communication + Analog outupt

2
PA195I-□S□：Measurement + Communication + Digital input + Relay
output+ Analog output (optional)
PZ195U-□X□：Measurement
PZ195U-□K□：Measurement + Communication + Analog output
PZ195U-□S□：Measurement + Communication + Digital input + Relay
output+ Analog output (optional)
2.2 Model selection
Model
Phase
Display
Communication
Analog
output
Digital
input
Relay
output
□ outline code
2
3
5
9
A
PZ195U-□X1
Single phase
LED
-
-
-
-
■
■
■
■
■
PA195I-□X1
■
■
■
■
■
PZ195U-□K1
single
phase
LED
1
1
-
-
■
■
■
■
■
PA195I-□K1
■
■
■
■
■
PZ195U-2S1
single
phase
LED
1
-
4
2
■
-
-
-
-
PA195I-2S1
■
-
-
-
-
PZ195U-9S1
single
phase
LED
1
-
-
2
-
-
-
■
-
PA195I-9S1
-
-
-
■
-
PZ195U-□XY1
single
phase
LCD
-
-
-
-
-
-
■
■
■
PA195I-□XY1
-
-
-
-
-
-
■
■
■
PZ195U-□KY1
single
phase
LCD
1
1
-
-
-
-
■
■
■
PA195I-□KY1
1
1
-
-
-
-
■
■
■
PZ195U-□SY1
single
phase
LCD
1
Optional
4
2
-
-
■
■
■
PA195I-□SY1
1
Optional
4
2
-
-
■
■
■
Note:
1. AS1 and ASY1 only have 2 digital inputs and 2 relay outputs;
2. Numbers in the blank indicate channels of corresponding functions;
3. ■ means the corresponding outline is available.

3
3. Installation and wiring
3.1 Outline dimension
3.2 Installation method
1) On the fixed distribution electric cabinet, choose a suitable place for cutout by size of
cut-out;
2) Take off the fixed clip of meter.
3) Insert the meter into the cutout.
4) Push the fixed clip to fix the meter.
Outline
code
Pointer
meter model
Panel（mm2）
Cut-out（mm2）
Installation depth
（mm）
2
42 square
type
120×120
111×111
55.5/76
3
6 square
type
83×83
76×76
75
9
9 square
type
96×96
91×91
75/98
A
61 square
type
74×74
67×67
75/90
5
5 slot type
96×48
91×44
68.5/82

4
3.3 Wiring diagram
Note: upper diagram is for the meters with all functions. If a meter only
has some of the functions shown in upper diagram, please refer to the wiring
diagram on the case of that meter.
Wiring instruction:
1. Current input: directly connected to 0～10A, if the current is larger than 10A,
please use diverter or holzer component;
2. Voltage input: directly connected to 0～1000V;
3. Make sure the positive and negative terminal of voltage or current are
corresponding to the wiring diagram;
4. Power supply: AC/DC (80～270)V. User can choose fuse with max. rated
current 0.25A.
5. Diagrams of different models are not the same with each other, please refer
to the specific diagram on the meter.

5
4. Operation
4.1 Panel instruction
V
C
A
B
PZ195U-9K1 panel
4.2 Display
Measurement display interfaces show measured data of voltage,
current, digital input and relay output. User can press or button to
switch between different interfaces in a cyclic order.
Main measurement display interfaces are as follows：
Measurement display interfaces
Instruction
U＝380.0V
I=300.0A
Press or button to
switch to digital input interface.
A: Unit and signs
B: Button
C: Measured value display

6
Notice:
If some information does not exist or relative information does not work, it
means that meter does not have relative function.
5. Setting
There are reading and programming modes in the meter.
5.1 Reading mode
In measurement display interface, keep pressing Menu button for more
than three seconds until appears, then press button to enter
system parameter checking interface. In this interface, the parameters only
can be read.
Press or button to
switch to relay output interface.

7

8
5.2 Programming mode
In measurement display interface, keep pressing Menu button for more
than three seconds until appears, then press or button to
switch to . Now press button to enter program password interface.
Press or button to input password (defaulted 0001), and then press
button to enter setting menu. (Note: if the password is not right,
will appear. Then it returns to program password interface after seven
seconds.)
The method of entering setting menu is as follows：
If the parameters of third level data are modified, please press
button to save the modified data and return to secondary level. If user press
Menu button, the modified data will not be saved.
If user wants to exit program setting interface, please return to first level
of program setting interface, then press Menu button to see -- ,
now there are two choices available:
（1）Press button to exit program setting interface without saving
modified data;
（2）Press or button to switch to -- , then press
button to exit program setting interface and save modified data.
The method of saving modified data and exiting setting interface is as
follows：

9
Setting menu instruction：
First level
Second level
Third level
Lett
er
Instru
ction
Letter
Instruction
Letter/number
Instruction
Input
Display value
～
0～9999
Unit of display
value
or
Unit
means A, V
means kA, kV
Input signal value
~
0～9999 （User can
not set this）
Unit of input
signal value
or
Unit （User can not
set this）
A, V
mA, mV
Com
munic
ation
Meter address
～
1～247
Baud rate
～
2400～9600bps
Data format
No check one stop
bit
No check, two stop
bits
Odd check, one stop
bit
Even check, one
stop bit
Alarm
settin
g
Relay mode
Alarm
Remote control
Off
Relay pulse time
～
Unit 0.1s

10
Alarm item
or ,
～,
or ,
～
See alarm item
setting
Relay delay
～
Unit 0.1s
Alarm limit value
～
Set off limit alarm
value
Hysteresis value
～
Set hysteresis value
Analo
g
output
settin
g
Analog output
mode
（User can not
set this）
0～20mA
4～20mA
4～12～20mA
0～5mA
0～5V
1～5V
0～10V
Lower limit value
of analog
output
～
0≤DS≤0.5*a
a: rated value
(FS-DS)≥500
Upper limit value
of analog output
～
0.5*a≤FS≤1.2*a
a: rated value
(FS-DS)≥500
Syste
m
param
eter
Cyclic display
period
～
Unit s
Password
～
Setting password
Brightness
～
L1 ～L5, lower to
higher brightness
degree
Flashing alarm
～
Flashing alarm range
is between 30.0 and
120.0% of rated
value. 0.0% means
this function is off.

11
5.3 System setting
E.g. set password to be 2, choose brightness degree to be L4, and select
flashing alarm value to be more than 120% of rated value.
Enter setting interface, press or button to select , then
press button to enter system setting menu. Now press or
button again to select specific items and press button again.
※Set password
※Choose brightness degree
※Select flashing alarm value
5.4 Input setting
User can change input signal according to actual situation in field. Unit of
primary value is A/V. E.g. set input signal as 50.0A/75mV (user can not
change secondary value 50.0A/75mV). First enter setting menu, second
press or button to select , third press button to enter input
signal setting menu. Now press or button again to select specific
items and press button again.
Change
number
Decimal point
flashes
Change position of
decimal point
5.5 Relay output setting
User can change first relay from off to alarm mode, alarm activates after
5 seconds when DC current is higher than 6.000A with hysteresis value of
0.005A. First enter setting interface, second press or button to select
, third press button to enter relay output setting menu. Now

12
press or button again to select specific items and press button
again.
※Set alarm mode
※Set alarm item
※Set alarm current value
※Set relay delay time
※Set hysteresis value
5.6 Analog output setting
E.g. set analog output as DC current 0 ～5A corresponds to 4 ～20mA
output. First enter setting menu, second press or button to select
, third press button to enter analog output setting menu. Now press
or button again to select specific item and press button again.
※Set lower limit value of analog output
※Set upper limit value of analog output
Note：1）User can not set analog output mode such as 4～20mA；
2）Analog output item of DC ammeter is defaulted to be current. User
can not change it.

13
5.7 Communication setting
E.g. set communication address to be 3, select baud rate as 9600bps,
choose data format as no check mode. First enter setting menu, second
press or button to select , third press button to enter
communication menu. Now press or button to select specific items
and press button again.
※Set communication address
※Set data format
※Set baud rate
6. Common problems and troubleshooting
6.1 About communication
The meter does not send data back
First make sure the communication setting information of the meter such
as subordinate machine address, baud rate and check mode corresponds to
the requirements of host computer. If several meters on spot do not send data
back, please check whether the communication bus on spot is connected
correctly and whether RS485 converter working normally.
If there is only one meter or a few meters communicate abnormally, related
communication bus is also needed to be checked. You may check whether
there is an error in the host computer by exchanging the subordinate machine
addresses of normal meter and abnormal meter. Besides you may check
whether there is a fault in the meter by exchanging the installation positions of
normal and abnormal meters.
The data sent back by the meter is incorrect

14
Communication data which is opened to users includes primary grid float
type data and secondary grid int/long type data. Please read the instruction
for data storage address and format in communication address table carefully,
and make sure to transmit data according to relative format.
It is suggested to download testing software MODSCAN32 for checking
MODBUS-RTU communication protocol from our homepage. This software
adopts standard MODBUS-RTU protocol which can display data in the
formats such as integer, float and hexidecimal, so that you can compare the
data with measured data displayed on the meter directly.
Communication indication sign
There is a communication indication sign in the display interface of meters.
If a meter receives communication data during communication test process,
this communication sign will flash.
6.2 Measured data is not correct
First make sure that the meter has been input right voltage. The
multimeter is used for measuring voltage. Electric quantity displayed on the
meter is the value of primary grid; it may lead to wrong electric quantity
display if the ratio of voltage transformer does not conform to that of
transformer in-service. The defaulted voltage range is not allowed to be
modified after delivery. Connection network is available to be modified
according to actual connection on spot, but the connection mode set in
programming shall correspond with the actual connection method, otherwise
it may lead to wrong display.
6.3 Meter does not work
Ensure proper auxiliary supply（AC/DC80-270V）is linked to the auxiliary
supply terminal. As the meter may be damaged by auxiliary supply voltage
which is beyond rated range and can not recovery. Use multi-meter to
measure the voltage of auxiliary supply, if the meter does not display when
the voltage is proper, please electrify again.

15
6.4 Other phenomena
Please contact our technical service department to give a detailed
description of the field condition. Our technicians will analyze possible causes
according to your description. The company will appoint technicians to deal
with problems on spot as soon as possible if the problem can not be settled
after oral communication.
7. Technical specification
Electrical feature
Accuracy
0.2%, 0.5%(defaulted)
Data refresh rate
1s
Input
Rated voltage
value
DC 75mV, 1～5V, 110V, 220V, 1000V etc.
Rated current
value
DC 4～20mA, 1A, 5A, 10A, 75mV
Overload
continuous 1.2 of rated value
Power
supply
Working range
AC 80～270V （50/60Hz）, DC 80～270V, DC 24V
Consumption
≤5VA
Digital input
Dry contact mode
Relay output
Contact capacity (resistive)：AC 5A/250V, DC 5A/30V
Analog
output
Current output
DC 4～20mA, 0～20mA etc.，load≤350Ω
Voltage output
DC 0～5V, 1～5V etc.，load ≥20kΩ
Communication
RS485 interface，Modbus-RTU protocol，baud rate 2400～
9600bps
Environment

16
Protection degree
Panel IP64，Case IP20
Working temperature
-40～70℃（LED）, -25～70℃（LCD）
Storage temperature
-40～85℃
Relative humidity
≤93%RH
Insulating ability
Between power and input or output≥AC2kV;
Between input and output≥AC1kV
Altitude
2500m
EMC
Electrostatic discharge surge
immunity
IEC 61000-4-2-III
Radiated, radio-frequency,
electromagnetic field immunity
IEC 61000-4-3-III
Electrical fast transient/burst
immunity
IEC 61000-4-4-Ⅳ
Surge immunity
IEC 61000-4-5-Ⅳ
Immunity to conducted
disturbances, induced by
radio-frequency fields
IEC 61000-4-6-III
Power frequency magnetic
field immunity
IEC 61000-4-8-III
Voltage dips, short
interruptions and voltage
variations immunity
IEC 61000-4-11-III

17
Appendix 1 Alarm items and units of relative alarm threshold
No.
Alarm item
Unit of alarm value
0
U--H（High voltage alarm）or
I--H（High current alarm）
0.1V or 0.001A
1
U--L（Low voltage alarm）or
I--L（Low current alarm）
2
dI1.H（Relay activates when first digital input
conducts.）
Alarm value is not
needed to be set in
relay linkage mode.
3
dI1.L（Relay activates when first digital input
opens.）
4
dI2.H（Relay activates when second digital
input conducts.）
5
dI2.L（Relay activates when second digital
input opens.）
6
dI3.H（Relay activates when third digital input
conducts.）
7
dI3.L（Relay activates when third digital input
opens.）
8
dI4.H（Relay activates when fourth digital
input conducts.）
9
dI4.L（Relay activates when fourth digital
input opens.）

18
Appendix 2 Modbus-RTU Communication address information list
◆Read DC information through function code 0x03/0x04
Address
Format
Data instruction
Unit
R/W
Primary data
0x06
float
DC voltage
V
R
0x08～0x11
Reserved
0x12
float
DC current
A
R
0x14～0xFF
Reserved
0x100～0x101
Bit[32]
Relay output status
Bit[0]-Bit[2]
0: Open
1: Closed
R
0x102～0x103
Bit[32]
Digital input status
Bit[0]-Bit[3]
0: Open
1: Closed
R
◆Read status information of relay through function code 0x01, and
control relay through function code 0x05, 0x0F.
Address
Format
Data content
Data instruction
R/W
0000
（fixed
address）
Bit
First relay
0：off 1：closed
R/W
Bit
Second relay
0：off 1：closed
R/W
◆Remotely control relay through function code 0x05, 0x0F
Address
Format
Data content
Data instruction
R/W
0000
Bit
First relay
0：off 1：closed
R/W
0001
Bit
Second relay
0：off 1：closed
R/W
◆Read status of digital input through function code 0x02
Address
Format
Data content
Data instruction
R/W
0000
（fixed address）
Bit
First digital input
0：off 1：closed
R
Bit
Second digital input
0：off 1：closed
R
Bit
Third digital input
0：off 1：closed
R
Bit
Fourth digital input
0：off1：closed
R