Seneca Z203-2 User manual

INSTALLATION MANUAL
Z203-2
Advanced single-phase network analyzer
SENECA s.r.l.
Via Austria, 26 – 35127 – PADOVA – ITALY
Tel. [phone] - Fax [phone]
For manuals in other languages and conguration software, visit
www.seneca.it/prodotti/z203-2
E
MI005290-E 1/8

MODULE LAYOUT
Dimensions LxHxD 17.5 x 102.5 x 111 mm; Weight: 130 g; Enclosure: PA6, black
17.5 mm 111 mm
102.5 mm
PRELIMINARY WARNINGS
The word WARNING preceded by the symbol indicates conditions or actions that put the user's safety at
risk. The word ATTENTION preceded by the symbol indicates conditions or actions that might damage the
instrument or the connected equipment.
The warranty shall become null and void in the event of improper use or tampering with the module or devices
supplied by the manufacturer as necessary for its correct operation, and if the instructions contained in this manu-
al are not followed.
WARNING: The full content of this manual must be read before any operation. The module must only be used by
qualied electricians. Specic documentation is available at www.seneca.it/products/z203-2
Important: Obstructing ventilation slots with any object is prohibited.
Installing the module next to devices that generate heat is prohibited.
Electrical and electronic waste disposal (applicable in the European Union and other countries with recycling). The
symbol on the product or its packaging shows the product must be surrendered to a collection centre authorized to
recycle electrical and electronic waste.
The module must be repaired and damaged parts replaced by the Manufacturer. The product is sensitive to electro-
static discharges. Take appropriate measures during any operation.
LED STATUS LED meaning
PWR Green ON The device is powered correctly
FAIL yellow Flashing Measured voltage lower than 40 Vac and current <20 mA
FAIL yellow ON Communication error between internal peripheral devices
RX Red Flashing Receipt of packet completed
RX Red ON Anomaly / Check connection
TX Red Flashing Transmission of packet completed
SIGNALS VIA LED ON FRONT PANEL
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TECHNICAL SPECIFICATIONS
STANDARDS
EN61000-6-4 Electromagnetic emissions, industrial environment.
EN61000-6-2 Electromagnetic immunity, industrial environment.
EN61010-1 Safety
Note for UL: use in environments with pollution degree 2. The power supply unit must be
class 2. Install a fuse with a MAX capacity of 2.5 A near the module.
INSULATION
ENVIRONMENTAL
CONDITIONS
Temperature: -20 – + 65°C (-10 - +60 °C UL)
Humidity: 30%– 90% non condensing.
Altitude: up to 2000 m above sea level
Storage temperature: -20 + 85°
Protection degree: IP20.
ASSEMBLY IEC EN60715, 35mm DIN rail in vertical position.
CONNECTIONS
3-way removable screw terminals, 5mm and 10mm pitch
Rear connector IDC10 for DIN bar 46277
front micro USB
POWER SUPPLY Voltage: 10 – 40 Vdc; 19 – 28 Vac ; 50 – 60 Hz
Absorption: Typical: 1.5 W @ 24Vdc, Max: 2.5 W
SERIAL COM. RS485, 1200 – 115200 Baud - RS232, 2400 Baud, Address:01, Parity: NO, Data: 8 bit;
Stop bit:1.
PROTOCOL Modbus-RTU
OVERVOLTAGE
CATEGORY II (up to 300 V)
RETRANSMITTED
INPUT/OUTPUT
Voltage input: Up to 500 Vac, frequency: from 35 to 75 Hz
Current input: Rated capacity: 5 Arms, Max Crest factor: 3
Maximum current: 15 A, Frequency: from 35 to 75 Hz
Class/Base Prec.: Voltmeter: 0.5%: Ammeter: 0.5%; Wattmeter: 0.5% (active power)
ANALOGUE
OUTPUT
Voltage output: 0 - 10 Vdc, 0..5 Vdc, minimum load resistance: 2 k Ω
Current output: 0 - 20 , 4..20 mA, max load resistance: 500 Ω
Retransmission error: 0.1% of maximum eld
DIGITAL OUT-
PUTS FOR
ENERGY PULSE
COUNTER
Type: 0 – 20 Passive (must be powered), R > 480 Ω
Capacity: 50 mA
Insulation: 1500 Vpeak
Terminals: 1 and 6 ( common with GND analogue output)
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WARNING
the maximum working voltage between any
terminal and ground must be less than 50
Vac / 75Vdc (input excluded).
Communication
Power
Supply
Input Analog
Output
3750 V~
10..40 Vdc / 19..28 Vac
mA / V
0..500 Vac
5 Arms
RS485
1500 V~
PRODUCT DESCRIPTION
The Z203-2 is a complete single-phase network analyzer, suitable for voltage ranges up to 500 Vac, with currents
up to 5 A (from 35 Hz to 75 Hz). The instrument can supply all the following electrical quantities: Vrms, Irms, Watt,
Var, Frequency, Energy, Cosɸ. The measurements are made available for reading via serial communication both
in oating point format and normalized (except for energy). By setting the Dip Switches or the Modbus registers,
the analogue retransmission of any of the Vrms, Irms, Watt, Var, Frequency and Cosɸ quantities is possible.
USB

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PROGRAMMING
For the product programming and/or conguration tools, go to.seneca.it.
During initial programming, the EEPROM (SW1..8 IN OFF position) default settings that are originally programmed
as follows, can be used:
Address = 001, BAUD RATE = 38400, PARITY = none, BIT NUMBER = 8, STOP BIT = 1.
The module can also be programmed through the front connector (USB) and making sure you set the following
parameters for the connection: Address = 001, Baud rate = 2400, PARITY = none, STOP BIT = 1.
The USB communication port behaves exactly like that of the RS485 bus except for the communication
parameters as already described. It also has priority over the RS485 port and is closed after about 15 seconds’
inactivity.
SERIAL INTERFACE
For detailed information on the RS485 serial interface, refer to the documentation on the www.seneca.it site, in the
Products / Z-PC Series / MODBUS TUTORIAL section.
OPERATING LOGIC
The module provides, in the appropriate MODBUS registers, the values of the following electrical quantities: Vrms,
Irms, Watt, Var, Frequency, Energy, Cosɸ.
Except for energy, these measurements are available both in oating point format and normalized between 0 -
+10000 (0 - +10000 for absolute values of VAR and cosΦ, 350..750 for frequencies between 35.0 Hz and 75.0
Hz). The module retransmits as output, as a current or voltage signal, one of the previous quantities chosen by
the user (excluding energy). The range of the retransmitted output is proportional to the full scale value of the
measured quantity. For example, if the retransmitted signal is in current 4 - 20 mA and the quantity to retransmit
the voltage Vrms, we will have that 4 mA will correspond to 0 V, and 20 mA will correspond to 500 V, this being the
full scale for rms voltages.
You can also choose retransmission scaling: 100%, 50 % or 25 %. Getting back to the previous example but
setting a 50% retransmission scaling, 4 mA will correspond to 0 V and 20 mA will correspond to 250 V. The
retransmission values saturate at about 11 V for voltage outputs and at about 21 mA for current outputs.
At start-up the appropriate calibration coefcients are taken (depending on the choice of 50 or 60 Hz frequency).
All settings are loaded when the module is reset. The stored energy values are saved in FeRAM memory, so they
are not lost in case of power failure.
It should be noted that the Vrms, Irms, Active Power and frequency values are obtained by direct measurement,
while the Energy, Reactive Power and cosf values are calculated.
The measured active power can only be greater than or equal to zero. An example: if the reactive power is -2500
VAR or +2500 VAR (physical value, electrical network), the corresponding numerical value is +10000 and the
analogue output (available at the terminals) is +10 V (if SW2-2,3 = "00"). If the reactive power is 0 VAR (physical
value), the corresponding numeric value is 0 and the analogue output (available at the terminals) is 0 V (if SW2-
2,3 = "00"). Cos has the same behaviour as reactive power. For measurement and retransmission ranges in the
case of 50% and 25% scaling, refer to the tables in the USER MANUAL.

SETTING THE DIP-SWITCHES
The instrument leaves the factory congured with all the DIP-switches in position 0. The position of the DIP-switches denes the communica-
tion parameters of the module: address and speed.
DIP-Switch status
SW1 POSITION DESCRIPTION
1 2 3 4 5 6 7 8
9600
BAUD RATE
19200
38400
57600
#1
ADDRESS
#2
#...
#63
From EEPROM
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DIP-Switch status
SW2 POSITION DESCRIPTION
1 2 3 4 5 6 7 8
Network frequency 50 Hz
NETWORK NOMINAL
FREQUENCY SELECTION (50 / 60 Hz)
Network frequency 60 Hz
0 – 10 V
OUTPUT TYPE
0 – 5 V
0– 20 mA
4– 20 mA
100%
RETR.
SCALING
50 %
25 %
Not allowed
Vrms retransmission
SELECTION
OF
RETR. OUTPUT
Irms retransmission
Watt retransmission
CosΦ retransmission
Frequency retransmission
VAR retransmission
Setting not allowed.
From EEPROM
KEY
ON
OFF

ModBUS CONNECTION RULES
1) Install the modules in the DIN rail (120 max)
2) Connect the remote modules using cables of an appropriate length. The following table shows cable length data:
- Bus length: maximum length of the Modbus network according to the Baud Rate. This is the length of the cables
that connect the two farthest modules (see Diagram 1).
- Derivation length: maximum length of a derivation 2 m (see Diagram 1).
For maximum performance, it is recommended to use special shielded cables, such as BELDEN 9841.
INSTALLATION REGULATIONS
The module has been designed for vertical installation on a DIN 46277 rail. For optimal operation and long life,
adequate ventilation must be provided. Avoid positioning ducting or other objects that obstruct the ventilation slots.
Avoid mounting modules over heat-generating equipment. Installation in the bottom part of the electrical panel is
recommended.
Insertion in the DIN rail
As shown in gure:
1. Insert the IDC10 rear connector of the module on a free slot of
the DIN rail
(the insertion is univocal since the connectors are polarized).
2. To secure the module to the DIN rail, tighten the two hooks on
the side of the IDC10 rear connector.
USB PORT
The module is designed to arrange data according to the modes dened by the MODBUS protocol. It has a micro
USB connector on the front panel and can be congured using applications and/or software programs. The USB
communication has priority over the RS485 communication.
The USB serial port uses the following communication parameters: 2400,8,N,1The USB communication port
responds exactly like the RS485 port with the exception of the communication parameters. During the use of the
USB port, the bus will be inactive; it will reactivate automatically a few seconds after the last message exchanged
on the USB port. EASY SETUP is the software to use for the conguration. For more information, visit www.sene-
ca.it/products/z203-2
Check that the device in question is included in the list of products supported by the Easy Setup APP in the store.
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CU-A-MICRO-OTG CU-A-MICROB CU-A-MICROB
1200 m 2 m
21
4
5
Ld
Diagram 1
Bus length Derivation
length
Module Module
Module
Module
Module 3
Bus length
Ld= derivation length
Insertion on
the DIN rail MODULE
DIN rail
Android APP
conguration
PC software
conguration

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ELECTRICAL CONNECTIONS
Power supply and Modbus interface are available using the Seneca DIN rail bus, via the IDC10 rear connector, or
the Z-PC-DINAL-17.5 accessory.
RS485GND
RS485A
RS485B
Power Supply AC / +
Power Supply AC / -
IDC 10
1
Back connector (IDC 10)
The illustration shows the meanings of the various
IDC10 connector pins if signals are to be sent via
them directly.
Power Supply AC
Ground
Power Supply AC
GNDSHLDG ND
CANL / BCANL / A
DIP SWITCH
(1230 Ohm terminator)
Z-PC-DINAL2-17.5 accessory use
If the Z-PC-DINAL2-17.5 accessory is used, signals
can be sent via terminal boards. The illustration
shows the meaning of the various terminals and DIP-
switch position (found in all supports for the DIN rail
listed in Accessories) for the termination of the CAN
network (not used for the Modbus network). GNDSH-
LD:
Connection cable signal protection shield (recom-
mended).
Retransmitted input/output
The module accepts an input voltage up to 500 Vac maximum. Provide the input voltage to terminals 10 and 12
and connect terminals 7 and 9 to the load to be analyzed.
MAX
5 A rms
MAX
500 V
AC
7
9
10
12
LINE IN LINE OUT
Z203-2
LINE
LOAD
Analogue output
The module provides a voltage output (0 - 10 Vac, 0 - 5
Vac) or current (0 - 20 mA, 4 - 20 mA).
For the electrical connections, we advise you to use
screened cables.
NB: there is no isolation between RS485 and retransmit-
ted output.
2 3
5 5
6 4
+
+
Digital output
The module provides a digital output: each pulse (dura-
tion: 200 ms) corresponds to a certain number of incre-
ments of the energy count (see the Digital Output Ratio
register). Imax=V/R=50 mA
+
6
1
+
-
I
R
V
EXAMPLE OF CONNECTION WITH EXTERNAL TA (in this case, congure the Z203-2 using the software
and NOT the dip-switches)
F
230 Vac
N
P1/K P2/L
S1/K S2/L
TA
Z203 -2
N.C.
7 9 10 12
LOAD
MODULE SUPPLY
Voltage output Current output
Digital output

ACCESSORIES
CODE DESCRIPTION
CU-A-MICROB USM - micro USB 1 metre communication cable
Z-PC-DINAL2-17.5 Quick t support for DIN rail - HEAD + 2 SLOT P = 17.5 mm
Z-PC-DIN2-17.5 Quick t support for DIN rail - 2 SLOT P = 17.5 mm
Z-PC-DIN8-17.5 Quick t support for DIN rail - 8 SLOT P = 17.5 mm
CONTACT INFORMATION
Technical support [email protected] Product information [email protected]
This document is the property of SENECA srl. Copies and reproduction are prohibited unless authorised. The con-
tent of this document corresponds to the described products and technologies.
Stated data may be modied or supplemented for technical and/or sales purposes.
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ADVANCED SETTINGS
Through the "EASY SETUP" conguration software it is possible:
• Set the IS (the scale start) and FS (the full scale) of the desired output.
• Set a safety timer which, after a programmed time, brings the outputs to a predened safety status.
• Set the security status of the outputs, this will be activated in the event of a communication failure for a time
equal to that set in the safety timer.
To view the advanced settings procedures, refer to the USER MANUAL downloadable from
www.seneca.it/products/z203-2.
ATTENTION
The upper power supply limits must not be exceeded, as this might cause serious damage to the module. Switch
the module off before connecting inputs and outputs.
To meet the electromagnetic immunity requirements:
• use shielded signal cables;
• connect the shield to a preferential instrumentation earth system;
• separate shielded cables from other cables used for power installations (inverters, motors, induction ovens,
etc...).
• Make sure that the power supply voltage to the module does not exceed: 40 Vdc or 28 Vac, otherwise the
module will be damaged.
2
3
-Vac/Vdc
+ Vac/Vdc
1
Power supply
Terminals 2 and 3 can be used to provide the module with power supply as an al-
ternative to the connection using the Z-PC-DINx bus. The upper limits must not
be exceeded as this can seriously damage the module. If the power supply
source is not protected against overload, a safety fuse with a 2.5 max permissible
value must be installed in the power supply line. W.
GND
B
A
4
5
6
ModBus RS485
Connection for RS485 communication using the MODBUS master system as an
alternative to the Z-PC-DINx bus.
N.B. The indication of the RS485 connection polarity is not standardised and in
some devices may be inverted.